206 results on '"Newman SJ"'
Search Results
2. Ultraviolet radiation and natural sunscreens in Antarctic krill
- Author
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Newman, SJ
- Abstract
This thesis examines the adaptations of Antarctic krill (Euphausia superba Dana) to ultraviolet radiation in terms of susceptibility, behavioural avoidance and the presence/utility of UV-absorbing mycosporine-like amino acids (MAAs). In order to test the susceptibility of krill to UVB (280-320 nm) radiation, groups of animals in laboratory tanks were irradiated with various light treatments in order to determine lethal dose and effect on generalised activity. It was found that krill were killed within 3 days (8 hours of irradiation per day) by levels of UVB radiation equivalent to that at 5-15 m depth in the Southern Ocean in Spring. UV A (320-400 nm) was found to have no more effect on mortality and activity than visible light (PAR, 400-700 nm) only. This showed that krill are remarkably susceptible to low levels of UVB radiation, and are therefore at risk given their photic zone habitat. The behaviour of krill in response to gradients of visible light (photosynthetically active radiation, PAR), ultraviolet-A (UVA) and ultraviolet-B (UVB) was examined. It was found that krill swim away from high intensities of UV A and PAR, moving to areas of low intensity, but that they appear insensitive to high levels of UVB radiation. In a vertical tank, irradiance from above with UV A, but not UVB or PAR, was found to cause krill to significantly increase their depth. I conclude that krill can detect UVA but not UVB. Although detection of UVA may indirectly signal the presence of invisible UVB radiation, the fact that the spring ozone hole allows more UVB radiation through relative to UV A radiation, means that this response may not be sufficient to alert krill to initiate behaviour to avoid harmful radiation. The source, location and function of UV -absorbing MAAs were examined. Krill were fed algae irradiated under different UV conditions, with the different MAAs produced serving as a biological marker. In addition to MAA analysis of UV-killed krill, it was found that krill acquire MAAs from dietary algae, and not by de novo synthesis. Analysis of different krill tissues showed that some MAAs are selectively accumulated in certain body parts - highest concentrations were measured in eye tissues, and asterina-330 was found only in the eyes. This concentration of UV absorbing compounds in the eyes may aid in protection from UVB radiation, or may filter out UV A which can disrupt crustacean vision. An analysis of MAAs in krill caught during a large-scale biological survey revealed that concentration of MAAs was not directly correlated with the abundance of sympatric algae in the upper 100m suggesting, along with experimental data, that MAAs can be retained in tissues for long periods. This work also found that concentrations of MAAs decline as krill become larger, which may mean that susceptibility to UV changes with time. Variation of MAA concentrations along the survey also suggests that susceptibility also varies geographically, and is most likely influenced by abundance of phytoplankton. Krill fed on high-MAA diets did not appear to survive high UVB radiation any longer than those fed on low-MAA diets, although starved krill survived for a significantly shorter time than either. However, a diet high in MAAs seemed to reduce the detrimental effects of UVB radiation on activity. Further statistical analyses suggested a relationship between mortality and MAA concentration independent of feeding, specifically, survival time increased as concentrations of total MAAs and mycosporine-glycine:valine increased. It thus appears that Antarctic krill are equipped with a range of strategies to counteract the effects of ultraviolet radiation that penetrates to significant depths (20 m and deeper) in Antarctic waters during spring. It is equivocal whether krill have been impacted by UVB radiation in the past, due to a lack of data on krill populations from periods before the onset of ozone depletion. However, it is likely that other environmental factors are of more immediate concern in terms of the observed variation in krill stocks.
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- 2023
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3. The Need for a Broad Perspective Concerning Fisheries Interactions and Bycatch of Marine Mammal
- Author
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Molony, BW, primary, Wakefield, CB, additional, and Newman, SJ, additional
- Published
- 2015
- Full Text
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4. Increased connectivity and depth improve the effectiveness of marine reserves
- Author
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Goetze, JS, Wilson, S, Radford, B, Fisher, R, Langlois, TJ, Monk, Jacquomo, Knott, NA, Malcolm, H, Currey-Randall, LM, Ierodiaconou, Daniel, Harasti, D, Barrett, N, Babcock, RC, Bosch, NE, Brock, D, Claudet, J, Clough, J, Fairclough, DV, Heupel, MR, Holmes, TH, Huveneers, C, Jordan, AR, McLean, D, Meekan, M, Miller, D, Newman, SJ, Rees, MJ, Roberts, KE, Saunders, BJ, Speed, CW, Travers, MJ, Treml, Eric, Whitmarsh, Sasha, Wakefield, CB, Harvey, ES, Goetze, JS, Wilson, S, Radford, B, Fisher, R, Langlois, TJ, Monk, Jacquomo, Knott, NA, Malcolm, H, Currey-Randall, LM, Ierodiaconou, Daniel, Harasti, D, Barrett, N, Babcock, RC, Bosch, NE, Brock, D, Claudet, J, Clough, J, Fairclough, DV, Heupel, MR, Holmes, TH, Huveneers, C, Jordan, AR, McLean, D, Meekan, M, Miller, D, Newman, SJ, Rees, MJ, Roberts, KE, Saunders, BJ, Speed, CW, Travers, MJ, Treml, Eric, Whitmarsh, Sasha, Wakefield, CB, and Harvey, ES
- Published
- 2021
5. Effects of human footprint and biophysical factors on the body-size structure of fished marine species
- Author
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Bosch, NE, Monk, Jacquomo, Goetze, J, Wilson, S, Babcock, RC, Barrett, N, Clough, J, Currey-Randall, LM, Fairclough, DV, Fisher, R, Gibbons, BA, Harasti, D, Harvey, ES, Heupel, MR, Hicks, JL, Holmes, TH, Huveneers, C, Ierodiaconou, Daniel, Jordan, A, Knott, NA, Malcolm, HA, McLean, D, Meekan, M, Newman, SJ, Radford, B, Rees, MJ, Saunders, BJ, Speed, CW, Travers, MJ, Wakefield, CB, Wernberg, T, Langlois, TJ, Bosch, NE, Monk, Jacquomo, Goetze, J, Wilson, S, Babcock, RC, Barrett, N, Clough, J, Currey-Randall, LM, Fairclough, DV, Fisher, R, Gibbons, BA, Harasti, D, Harvey, ES, Heupel, MR, Hicks, JL, Holmes, TH, Huveneers, C, Ierodiaconou, Daniel, Jordan, A, Knott, NA, Malcolm, HA, McLean, D, Meekan, M, Newman, SJ, Radford, B, Rees, MJ, Saunders, BJ, Speed, CW, Travers, MJ, Wakefield, CB, Wernberg, T, and Langlois, TJ
- Published
- 2021
6. Thirty critical research needs for managing an ecologically and culturally unique remote marine environment: The Kimberley region of Western Australia
- Author
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Cvitanovic, C, Mackay, M, Kelly, R, Wilson, SK, Waples, K, Nash, KL, van Putten, EI, Field, S, Botterill-James, T, Austin, BJ, Beckley, LE, Boschetti, F, Depczynski, M, Dobbs, RJ, Evans, RD, Feng, M, Goater, RK, Halford, AR, Kendrick, A, Kendrick, G, Lincoln, GDB, Ludgerus, LJ, Lowe, RJ, McMahon, K, Munro, JK, Newman, SJ, Nutt, C, Pearson, L, O'Leary, MJ, Richards, ZT, Robbins, WD, Rogers, DI, Salgado Kent, CP, Schoepf, V, Travers, MJ, Thums, M, Tucker, AD, Underwood, JN, Whiting, S, Mathews, D, Cvitanovic, C, Mackay, M, Kelly, R, Wilson, SK, Waples, K, Nash, KL, van Putten, EI, Field, S, Botterill-James, T, Austin, BJ, Beckley, LE, Boschetti, F, Depczynski, M, Dobbs, RJ, Evans, RD, Feng, M, Goater, RK, Halford, AR, Kendrick, A, Kendrick, G, Lincoln, GDB, Ludgerus, LJ, Lowe, RJ, McMahon, K, Munro, JK, Newman, SJ, Nutt, C, Pearson, L, O'Leary, MJ, Richards, ZT, Robbins, WD, Rogers, DI, Salgado Kent, CP, Schoepf, V, Travers, MJ, Thums, M, Tucker, AD, Underwood, JN, Whiting, S, and Mathews, D
- Abstract
The Kimberley marine environment in Western Australia is widely recognised for its outstanding natural features, vast and remote sea and landscapes, and Indigenous cultural significance. To ensure that adequate baseline information is available to understand, monitor and manage this remote and relatively understudied region, scientific exploration was undertaken between 2012 and 2018 as part of the Kimberley Marine Research Program (KMRP). Whilst this program generated significant amounts of new knowledge about the region, important research gaps remain, that if answered, should improve the capacity of managers to conserve the region's values more effectively. Here, we apply established participatory horizon scanning methods to draw on the expertise and understanding of 24 scientists and 18 managers (12 natural resource managers and 6 healthy country managers) involved in the KMRP, and assess their most essential remaining research needs for informing management of the region. Through this process, we identify a total of 184 research questions spanning seven themes: (i) habitats, (ii) fauna, (iii) ecological processes, (iv) pressures, (v) management, (vi) oceanography, and (vii) geomorphology. Of the 184 questions that formed the basis of this study, 29% related to the theme of ‘management’, followed by questions relating to ‘fauna’ (21%) and ‘pressures’ (20%). Questions assigned to the theme of ‘habitats’ (13%), ‘ecological processes’ (10%), and ‘oceanography’ (6%) were less common, whilst questions that related to ‘geomorphology’ only constituted 1% of all questions provided by study participants. Subtle differences in the types of questions posed by the scientist and manager groups were also evident, with questions relating to ‘ecological process’ and ‘oceanography’ overwhelmingly provided by scientists; questions in the themes ‘fauna’ and ‘management’ were mainly provided by Healthy Country Managers; and questions posed by natural resource managers were distribu
- Published
- 2021
7. Equitable Expanded Carrier Screening Needs Indigenous Clinical and Population Genomic Data
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Easteal, S, Arkell, RM, Balboa, RF, Bellingham, SA, Brown, AD, Calma, T, Cook, MC, Davis, M, Dawkins, HJS, Dinger, ME, Dobbie, MS, Farlow, A, Gwynne, KG, Hermes, A, Hoy, WE, Jenkins, MR, Jiang, SH, Kaplan, W, Leslie, S, Llamas, B, Mann, GJ, McMorran, BJ, McWhirter, Rebekah, Meldrum, CJ, Nagaraj, SH, Newman, SJ, Nunn, JS, Ormond-Parker, L, Orr, NJ, Paliwal, D, Patel, HR, Pearson, G, Pratt, GR, Rambaldini, B, Russell, LW, Savarirayan, R, Silcocks, M, Skinner, JC, Souilmi, Y, Vinuesa, CG, Baynam, G, Easteal, S, Arkell, RM, Balboa, RF, Bellingham, SA, Brown, AD, Calma, T, Cook, MC, Davis, M, Dawkins, HJS, Dinger, ME, Dobbie, MS, Farlow, A, Gwynne, KG, Hermes, A, Hoy, WE, Jenkins, MR, Jiang, SH, Kaplan, W, Leslie, S, Llamas, B, Mann, GJ, McMorran, BJ, McWhirter, Rebekah, Meldrum, CJ, Nagaraj, SH, Newman, SJ, Nunn, JS, Ormond-Parker, L, Orr, NJ, Paliwal, D, Patel, HR, Pearson, G, Pratt, GR, Rambaldini, B, Russell, LW, Savarirayan, R, Silcocks, M, Skinner, JC, Souilmi, Y, Vinuesa, CG, and Baynam, G
- Published
- 2020
8. A field and video annotation guide for baited remote underwater stereo-video surveys of demersal fish assemblages
- Author
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Langlois, T, Goetze, J, Bond, T, Monk, J, Abesamis, RA, Asher, J, Barrett, N, Bernard, ATF, Bouchet, PJ, Birt, MJ, Cappo, M, Currey-Randall, LM, Driessen, D, Fairclough, DV, Fullwood, LAF, Gibbons, BA, Harasti, D, Heupel, MR, Hicks, J, Holmes, TH, Huveneers, C, Ierodiaconou, D, Jordan, A, Knott, NA, Lindfield, S, Malcolm, HA, McLean, D, Meekan, M, Miller, D, Mitchell, PJ, Newman, SJ, Radford, B, Rolim, FA, Saunders, BJ, Stowar, M, Smith, ANH, Travers, MJ, Wakefield, CB, Whitmarsh, SK, Williams, J, Harvey, ES, Langlois, T, Goetze, J, Bond, T, Monk, J, Abesamis, RA, Asher, J, Barrett, N, Bernard, ATF, Bouchet, PJ, Birt, MJ, Cappo, M, Currey-Randall, LM, Driessen, D, Fairclough, DV, Fullwood, LAF, Gibbons, BA, Harasti, D, Heupel, MR, Hicks, J, Holmes, TH, Huveneers, C, Ierodiaconou, D, Jordan, A, Knott, NA, Lindfield, S, Malcolm, HA, McLean, D, Meekan, M, Miller, D, Mitchell, PJ, Newman, SJ, Radford, B, Rolim, FA, Saunders, BJ, Stowar, M, Smith, ANH, Travers, MJ, Wakefield, CB, Whitmarsh, SK, Williams, J, and Harvey, ES
- Published
- 2020
9. Late-life mortality plateaus through error, not evolution
- Author
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Newman Sj
- Subjects
Mortality data ,Biology ,Specific model ,Regression ,Demography - Abstract
This study highlights how the mortality plateau in Barbi et al. [1] can be generated by low frequency, randomly distributed age misreporting errors. Furthermore, sensitivity of the late-life mortality plateau in Barbi et al. [1] to the particular age range selected for regression is illustrated. Collectively, the simulation of age misreporting errors in late-life human mortality data and a less specific model choice than that of Barbi et al. [1] highlight a clear alternative hypothesis to the cessation of ageing.
- Published
- 2018
10. Strong population structure deduced from genetics, otolith chemistry and parasite abundances explains vulnerability to localized fishery collapse in a large Sciaenid fish, Protonibea diacanthus
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Taillebois, L, Barton, DP, Crook, DA, Saunders, T, Taylor, J, Hearnden, M, Saunders, RJ, Newman, SJ, Travers, MJ, Welch, DJ, Greig, A, Dudgeon, C, Maher, S, Ovenden, JR, Taillebois, L, Barton, DP, Crook, DA, Saunders, T, Taylor, J, Hearnden, M, Saunders, RJ, Newman, SJ, Travers, MJ, Welch, DJ, Greig, A, Dudgeon, C, Maher, S, and Ovenden, JR
- Abstract
As pressure on coastal marine resources is increasing globally, the need to quantitatively assess vulnerable fish stocks is crucial in order to avoid the ecological consequences of stock depletions. Species of Sciaenidae (croakers, drums) are important components of tropical and temperate fisheries and are especially vulnerable to exploitation. The black-spotted croaker, Protonibea diacanthus, is the only large sciaenid in coastal waters of northern Australia where it is targeted by commercial, recreational and indigenous fishers due to its food value and predictable aggregating behaviour. Localized declines in the abundance of this species have been observed, highlighting the urgent requirement by managers for information on fine- and broad-scale population connectivity. This study examined the population structure of P. diacanthus across north-western Australia using three complementary methods: genetic variation in microsatellite markers, otolith elemental composition and parasite assemblage composition. The genetic analyses demonstrated that there were at least five genetically distinct populations across the study region, with gene flow most likely restricted by inshore biogeographic barriers such as the Dampier Peninsula. The otolith chemistry and parasite analyses also revealed strong spatial variation among locations within broad-scale regions, suggesting fine-scale location fidelity within the lifetimes of individual fish. The complementarity of the three techniques elucidated patterns of connectivity over a range of spatial and temporal scales. We conclude that fisheries stock assessments and management are required at fine scales (100 s of km) to account for the restricted exchange among populations (stocks) and to prevent localized extirpations of this species. Realistic management arrangements may involve the successive closure and opening of fishing areas to reduce fishing pressure.
- Published
- 2017
11. Local genetic patchiness but no regional differences between Indo-West Pacific populations of the dogtooth tuna Gymnosarda unicolor
- Author
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Bentley, BP, primary, Harvey, ES, additional, Newman, SJ, additional, Welch, DJ, additional, Smith, AK, additional, and Kennington, WJ, additional
- Published
- 2014
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12. Exceptional longevity, slow growth and late maturation infer high inherent vulnerability to exploitation for bass groper Polyprion americanus (Teleostei: Polyprionidae)
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Wakefield, CB, primary, Newman, SJ, additional, and Boddington, DK, additional
- Published
- 2013
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13. Searching for common threads in threadfins: phylogeography of Australian polynemids in space and time
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Horne, JB, primary, Momigliano, P, additional, Welch, DJ, additional, Newman, SJ, additional, and van Herwerden, L, additional
- Published
- 2012
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14. Relationships between latitude and environmental conditions and the species richness, abundance and composition of tropical fish assemblages over soft substrata
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Travers, MJ, primary, Potter, IC, additional, Clarke, KR, additional, and Newman, SJ, additional
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- 2012
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15. Large decline in the abundance of a targeted tropical lethrinid in areas open and closed to fishing
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McLean, DL, primary, Harvey, ES, additional, Fairclough, DV, additional, and Newman, SJ, additional
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- 2010
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16. Diffuse annular fusiform adenocarcinoma in a dog
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Prater, MR, primary, Flatland, B, additional, Newman, SJ, additional, Sponenberg, DP, additional, and Chao, J, additional
- Published
- 2000
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17. Stock structure of the goldband snapper Pristipomoides multidens (Pisces:Lutjanidae) from the waters of northern and western Australia by stable isotope ratio analysis of sagittal otolith carbonate
- Author
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Newman, SJ, primary, Steckis, RA, additional, Edmonds, JS, additional, and Lloyd, J, additional
- Published
- 2000
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18. Age validation, growth and mortality rates of the tropical snappers (Pisces: Lutjanidae) Lutjanus adetii (Castelnau, 1873) and L. quinquelineatus (Bloch, 1790) from the central Great Barrier Reef, Australia
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Newman, SJ, primary, Williams, DM, additional, and Russ, GR, additional
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- 1996
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19. The accuracy of reports on housing and neighborhood conditions by persons with severe mental illness.
- Author
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Newman SJ
- Abstract
This paper summarizes the results and implications of a validation study of reports of housing and neighborhood conditions by persons with severe mental illness. Reports of housing repair status and neighborhood conditions were obtained in personal interviews with persons with severe mental illness. These reports were compared to the highly accurate reports of repair need and neighborhood conditions subsequently collected by trained housing inspectors. The results suggest that individuals with severe mental illness are valid reporters of adequate conditions in their homes and neighborhoods, but they are less able to report accurately about inadequate conditions in their residential environments. [ABSTRACT FROM AUTHOR]
- Published
- 1995
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20. Cranberries and urinary-tract health: a knowledge assessment of American College of Obstetricians and Gynecologists fellows.
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Greenberg JA, Newman SJ, and Morgan MA
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- 2004
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21. Population genomics informs the management of harvested snappers across north-western Australia.
- Author
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Payet SD, Underwood J, Berry O, Saunders T, Travers MJ, Wakefield CB, Miller K, and Newman SJ
- Subjects
- Animals, Western Australia, Fisheries, Fishes genetics, Genetic Variation, Metagenomics methods, Perciformes genetics, Australia, Polymorphism, Single Nucleotide, Genetics, Population
- Abstract
Failure to consider population structure when managing harvested fishes increases the risk of stock depletion, yet empirical estimates of population structure are often lacking for important fishery species. In this study, we characterise genetic variation in single nucleotide polymorphisms (SNPs) to assess population structure for three harvested species of tropical snappers across the broad (up to 300 km wide) and extensive (~ 4000 km) continental shelf of north-western Australia. Comparisons across ~ 300 individuals per species, showed remarkably similar patterns of genetic structure among Lutjanus sebae (red emperor), L. malabaricus (saddletail snapper) and Pristipomoides multidens (goldband snapper) despite subtle differences in biological and ecological traits. Low levels of genetic subdivision were reflected in an isolation by distance relationship where genetic connectivity increased with geographic proximity. This indicates extensive but not unlimited dispersal across the north-western Australian shelf. Our findings provide evidence of connectivity between current management areas, violating the assumption of multiple independent stocks. Spatial stock assessment models may be more suitable for the management of these species however demographic connectivity rates cannot be accurately estimated from the conventional population genetic approaches applied in this study. We recommend that managers aim to maintain adequate spawning biomass across current management areas, and assess stocks at finer scales, where practical., (© 2024. Crown.)
- Published
- 2024
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22. Directed conservation of the world's reef sharks and rays.
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Goetze JS, Heithaus MR, MacNeil MA, Harvey E, Simpfendorfer CA, Heupel MR, Meekan M, Wilson S, Bond ME, Speed CW, Currey-Randall LM, Fisher R, Sherman CS, Kiszka JJ, Rees MJ, Udyawer V, Flowers KI, Clementi GM, Asher J, Beaufort O, Bernard ATF, Berumen ML, Bierwagen SL, Boslogo T, Brooks EJ, Brown JJ, Buddo D, Cáceres C, Casareto S, Charloo V, Cinner JE, Clua EEG, Cochran JEM, Cook N, D'Alberto BM, de Graaf M, Dornhege-Lazaroff MC, Fanovich L, Farabaugh NF, Fernando D, Ferreira CEL, Fields CYA, Flam AL, Floros C, Fourqurean V, Barcia LG, Garla R, Gastrich K, George L, Graham R, Hagan V, Hardenstine RS, Heck SM, Heithaus P, Henderson AC, Hertler H, Hueter RE, Johnson M, Jupiter SD, Kaimuddin M, Kasana D, Kelley M, Kessel ST, Kiilu B, Kyne F, Langlois T, Lawe J, Lédée EJI, Lindfield S, Maggs JQ, Manjaji-Matsumoto BM, Marshall A, Matich P, McCombs E, McLean D, Meggs L, Moore S, Mukherji S, Murray R, Newman SJ, O'Shea OR, Osuka KE, Papastamatiou YP, Perera N, Peterson BJ, Pina-Amargós F, Ponzo A, Prasetyo A, Quamar LMS, Quinlan JR, Razafindrakoto CF, Rolim FA, Ruiz-Abierno A, Ruiz H, Samoilys MA, Sala E, Sample WR, Schärer-Umpierre M, Schoen SN, Schlaff AM, Smith ANH, Sparks L, Stoffers T, Tanna A, Torres R, Travers MJ, Valentin-Albanese J, Warren JD, Watts AM, Wen CK, Whitman ER, Wirsing AJ, Zarza-González E, and Chapman DD
- Subjects
- Animals, Conservation of Natural Resources methods, Sharks, Skates, Fish, Coral Reefs, Fisheries
- Abstract
Many shark populations are in decline around the world, with severe ecological and economic consequences. Fisheries management and marine protected areas (MPAs) have both been heralded as solutions. However, the effectiveness of MPAs alone is questionable, particularly for globally threatened sharks and rays ('elasmobranchs'), with little known about how fisheries management and MPAs interact to conserve these species. Here we use a dedicated global survey of coral reef elasmobranchs to assess 66 fully protected areas embedded within a range of fisheries management regimes across 36 countries. We show that conservation benefits were primarily for reef-associated sharks, which were twice as abundant in fully protected areas compared with areas open to fishing. Conservation benefits were greatest in large protected areas that incorporate distinct reefs. However, the same benefits were not evident for rays or wide-ranging sharks that are both economically and ecologically important while also threatened with extinction. We show that conservation benefits from fully protected areas are close to doubled when embedded within areas of effective fisheries management, highlighting the importance of a mixed management approach of both effective fisheries management and well-designed fully protected areas to conserve tropical elasmobranch assemblages globally., (© 2024. Crown.)
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- 2024
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23. A large-scale experiment finds no consistent evidence of change in mortality or commercial productivity in silverlip pearl oysters (Pinctada maxima) exposed to a seismic source survey.
- Author
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Parsons MJG, Barneche DR, Speed CW, McCauley RD, Day RD, Dang C, Fisher R, Gholipour-Kanani H, Newman SJ, Semmens JM, and Meekan MG
- Subjects
- Animals, Noise, Sound, Australia, Fisheries, Pinctada
- Abstract
High-intensity, impulsive sounds are used to locate oil and gas reserves during seismic exploration of the seafloor. The impacts of this noise pollution on the health and mortality of marine invertebrates are not well known, including the silverlip pearl oyster (Pinctada maxima), which comprises one of the world's last remaining significant wildstock pearl oyster fisheries, in northwestern Australia. We exposed ≈11,000 P. maxima to a four-day experimental seismic survey, plus one vessel-control day. After exposure, survival rates were monitored throughout a full two-year production cycle, and the number and quality of pearls produced at harvest were assessed. Oysters from two groups, on one sampling day, exhibited reduced survival and pearl productivity compared to controls, but 14 other groups receiving similar or higher exposure levels did not. We therefore found no conclusive evidence of an impact of the seismic source survey on oyster mortality or pearl production., Competing Interests: Declaration of competing interest The authors declare the following financial interests/personal relationships which may be considered as potential competing interests: Australian Institute of Marine Science reports financial support was provided by Santos Limited., (Crown Copyright © 2023. Published by Elsevier Ltd. All rights reserved.)
- Published
- 2024
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24. Utility of body and otolith morphometry to discriminate cryptic juveniles of two sympatric red snappers (Perciformes: Lutjanidae).
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Takahashi M, Wakefield CB, Newman SJ, Hillcoat KB, Saunders BJ, and Harvey ES
- Subjects
- Animals, Fishes genetics, DNA, Ecology, Otolithic Membrane anatomy & histology, Perciformes genetics
- Abstract
The sympatric red snappers, Lutjanus erythropterus and Lutjanus malabaricus, are highly valued by commercial and recreational fishers along the tropical northern coasts of Australia and throughout their distribution. Studies on the life history and ecology of these congeners are confounded by difficulties in distinguishing the cryptic juveniles of each species (i.e., < 200 mm total length). This study aimed to validate a robust and cost-effective method to discriminate these juveniles using body and/or otolith morphometric data in a multivariate analysis. Juvenile samples were collected from the northwest (n = 71) and northeast (n = 19) coasts of Australia, and species identification was confirmed using DNA barcoding. The most parsimonious multivariate models achieved accurate species prediction rates of 98.8%, which consisted of just three body variables (dorsal fin length, the distance from the snout to the anterior edge of the eye, and either jaw length or distance from the snout to the preoperculum). The high level of discrimination for these cryptic juveniles highlights the robustness of this morphometric approach. The slightly lower rate of discrimination using otolith morphology (84.9%) was associated with greater regional variation in L. malabaricus between the northwest and northeast coasts. Slight variations in otolith shape are typically used to determine stock structure, which highlights the potential need to collect samples over a broader area of a species geographic range when using an otolith morphometric discrimination model. The method outlined in this study could be applied to distinguish other cryptic congeneric fish species, including from archived otolith collections. Moreover, this method has the potential to be utilized in assessing species compositions using body measurements from in situ stereo-video., (© 2023 The Authors. Journal of Fish Biology published by John Wiley & Sons Ltd on behalf of Fisheries Society of the British Isles.)
- Published
- 2023
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25. Intracranial embryonal neoplasm in an alpaca.
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Fielding A, Minuto J, Mazan M, Miller AD, and Newman SJ
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- Animals, Camelids, New World, Neoplasms, Germ Cell and Embryonal diagnosis, Neoplasms, Germ Cell and Embryonal veterinary
- Abstract
An 11-y-old hembra alpaca was admitted because of cerebellar and vestibular signs, dysphagia, and aspiration pneumonia; without clinical improvement following empirical therapy, the patient was euthanized. On autopsy, a neoplasm was found incorporating the right vestibulocochlear nerve at the level of the acoustic meatus. Histologically, the mass was composed of a multiphasic primitive cell population associated with a dense fibrous stroma and enveloping a remnant ganglion and nerve bundles. Patterns included dense ribbons and cords of embryonal neuroepithelial cells admixed with loosely defined interlacing spindle cells. The embryonal cells had angular cell profiles with variable amounts of lightly basophilic cytoplasm, ovoid-to-irregular nuclei, and an open chromatin pattern with a typically inapparent nucleolus. Necrosis was not evident, and there was 1 mitotic figure per 2.37 mm
2 . The entire mass was infiltrated by small numbers of lymphocytes and plasma cells. Immunohistochemistry (IHC) revealed strong and diffuse cytoplasmic immunolabeling for vimentin, microtubule-associated protein-2, protein gene product 9.5, and synaptophysin; ~50% immunolabeling for cytokeratin AE1/3; sporadic OLIG2 and S100 immunolabeling; and absent glial fibrillary acidic protein immunolabeling. Based on the histologic pattern and the IHC results, our diagnosis was a poorly differentiated embryonal tumor with ependymal differentiation associated with the vestibulocochlear nerve., Competing Interests: Declaration of conflicting interestsThe authors declared no potential conflicts of interest with respect to the research, authorship, and/or publication of this article.- Published
- 2023
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26. Measurement of feline-specific pancreatic lipase aids in the diagnosis of pancreatitis in cats.
- Author
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Forman MA, Robertson JE, Shiroma JT, Hostutler RA, Simpson KW, Estrin M, Newman SJ, Corn SC, Buch J, and Armstrong PJ
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- Cats, Animals, Pancreas, Cross-Sectional Studies, Prospective Studies, Lipase, Pancreatitis diagnosis, Pancreatitis veterinary, Cat Diseases diagnosis
- Abstract
Objective: To establish a reference interval for a feline-specific pancreatic lipase assay (Spec fPL test; Idexx Laboratories Inc) in healthy cats and determine the sensitivity and specificity of the Spec fPL test in a large group of ill cats with and without pancreatitis., Animals: 41 healthy cats, 141 cats with clinical signs consistent with pancreatitis, and 786 stored sera with known feline pancreatic lipase immunoreactivity (fPLI) concentrations., Methods: This was a prospective, cross-sectional, nonrandomized study. Based on a detailed review of the medical history and results of physical examination, CBC, serum biochemical profile, urinalysis, abdominal ultrasonography, and clinical outcome, each cat was categorized by 2 board-certified internists masked to the fPLI test results into 1 of 6 categories from definitely pancreatitis to definitely not pancreatitis., Results: The reference interval for the Spec fPL test, determined from the central 95th percentile of results from healthy cats, was fPLI of 0.7 to 3.5 µg/L. An fPLI concentration of ≥ 5.4 µg/L was determined to be consistent with pancreatitis. With an fPLI of 5.4 µg/L as the diagnostic cutoff, the sensitivity of the Spec fPL test for feline pancreatitis (definitely pancreatitis and probably pancreatitis) was 79.4%, the specificity for cats characterized as probably not pancreatitis and definitely not pancreatitis was 79.7%, and positive and negative predictive values were 69% and 87%, respectively., Clinical Relevance: These findings support the use of the Spec fPL test as a valuable diagnostic test for feline pancreatitis.
- Published
- 2023
- Full Text
- View/download PDF
27. Diversity and Inclusion in Mental Health: A Collaborative Online International Learning Experience.
- Author
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Hammonds LS and Newman SJ
- Subjects
- Humans, United States, Mental Health, Nursing Education Research, Cultural Diversity, Education, Nursing, Baccalaureate, Students, Nursing psychology
- Abstract
Graduate students in a psychiatric mental health nurse practitioner program in the United States and undergraduate students in a first-year English course, Writing and Rhetoric, at a university in Ecuador participated in a Collaborative Online International Learning (COIL) experience in Fall Semester 2021. The purpose of the COIL experience was to develop global perspectives and cultural competencies regarding diversity and inclusion in mental health. The objectives of the COIL experience were to identify and discuss changes in thinking in four areas: eugenics and cultural bias, cultural bias in research, culture and mental illness, and institutional and care policies. Groups of students created educational posters about diversity and inclusion in mental health that were presented at a virtual mini conference to which other students and faculty at the participating universities were invited.
- Published
- 2023
- Full Text
- View/download PDF
28. Widespread diversity deficits of coral reef sharks and rays.
- Author
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Simpfendorfer CA, Heithaus MR, Heupel MR, MacNeil MA, Meekan M, Harvey E, Sherman CS, Currey-Randall LM, Goetze JS, Kiszka JJ, Rees MJ, Speed CW, Udyawer V, Bond ME, Flowers KI, Clementi GM, Valentin-Albanese J, Adam MS, Ali K, Asher J, Aylagas E, Beaufort O, Benjamin C, Bernard ATF, Berumen ML, Bierwagen S, Birrell C, Bonnema E, Bown RMK, Brooks EJ, Brown JJ, Buddo D, Burke PJ, Cáceres C, Cambra M, Cardeñosa D, Carrier JC, Casareto S, Caselle JE, Charloo V, Cinner JE, Claverie T, Clua EEG, Cochran JEM, Cook N, Cramp JE, D'Alberto BM, de Graaf M, Dornhege MC, Espinoza M, Estep A, Fanovich L, Farabaugh NF, Fernando D, Ferreira CEL, Fields CYA, Flam AL, Floros C, Fourqurean V, Gajdzik L, Barcia LG, Garla R, Gastrich K, George L, Giarrizzo T, Graham R, Guttridge TL, Hagan V, Hardenstine RS, Heck SM, Henderson AC, Heithaus P, Hertler H, Padilla MH, Hueter RE, Jabado RW, Joyeux JC, Jaiteh V, Johnson M, Jupiter SD, Kaimuddin M, Kasana D, Kelley M, Kessel ST, Kiilu B, Kirata T, Kuguru B, Kyne F, Langlois T, Lara F, Lawe J, Lédée EJI, Lindfield S, Luna-Acosta A, Maggs JQ, Manjaji-Matsumoto BM, Marshall A, Martin L, Mateos-Molina D, Matich P, McCombs E, McIvor A, McLean D, Meggs L, Moore S, Mukherji S, Murray R, Newman SJ, Nogués J, Obota C, Ochavillo D, O'Shea O, Osuka KE, Papastamatiou YP, Perera N, Peterson B, Pimentel CR, Pina-Amargós F, Pinheiro HT, Ponzo A, Prasetyo A, Quamar LMS, Quinlan JR, Reis-Filho JA, Ruiz H, Ruiz-Abierno A, Sala E, de-León PS, Samoilys MA, Sample WR, Schärer-Umpierre M, Schlaff AM, Schmid K, Schoen SN, Simpson N, Smith ANH, Spaet JLY, Sparks L, Stoffers T, Tanna A, Torres R, Travers MJ, van Zinnicq Bergmann M, Vigliola L, Ward J, Warren JD, Watts AM, Wen CK, Whitman ER, Wirsing AJ, Wothke A, Zarza-González E, and Chapman DD
- Subjects
- Animals, Humans, Fisheries, Biodiversity, Conservation of Natural Resources, Coral Reefs, Sharks, Skates, Fish, Extinction, Biological
- Abstract
A global survey of coral reefs reveals that overfishing is driving resident shark species toward extinction, causing diversity deficits in reef elasmobranch (shark and ray) assemblages. Our species-level analysis revealed global declines of 60 to 73% for five common resident reef shark species and that individual shark species were not detected at 34 to 47% of surveyed reefs. As reefs become more shark-depleted, rays begin to dominate assemblages. Shark-dominated assemblages persist in wealthy nations with strong governance and in highly protected areas, whereas poverty, weak governance, and a lack of shark management are associated with depauperate assemblages mainly composed of rays. Without action to address these diversity deficits, loss of ecological function and ecosystem services will increasingly affect human communities.
- Published
- 2023
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29. Early-life physical performance predicts the aging and death of elite athletes.
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Newman SJ
- Subjects
- Humans, Male, Adult, Aging, Athletes, Physical Functional Performance, Athletic Performance, Basketball
- Abstract
Athleticism and the mortality rates begin a lifelong trajectory of decline during early adulthood. Because of the substantial follow-up time required, however, observing any longitudinal link between early-life physical declines and late-life mortality and aging remains largely inaccessible. Here, we use longitudinal data on elite athletes to reveal how early-life athletic performance predicts late-life mortality and aging in healthy male populations. Using data on over 10,000 baseball and basketball players, we calculate age at peak athleticism and rates of decline in athletic performance to predict late-life mortality patterns. Predictive capacity of these variables persists for decades after retirement, displays large effect sizes, and is independent of birth month, cohort, body mass index, and height. Furthermore, a nonparametric cohort-matching approach suggests that these mortality rate differences are associated with differential aging rates, not just extrinsic mortality. These results highlight the capacity of athletic data to predict late-life mortality, even across periods of substantial social and medical change.
- Published
- 2023
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- View/download PDF
30. First isolation of Carnobacterium maltaromaticum from farmed Rainbow Trout in Virginia.
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Smith SA, Newman SJ, Harrison CE, and Loch TP
- Subjects
- Animals, Virginia epidemiology, Carnobacterium, Aquaculture, Oncorhynchus mykiss, Fish Diseases microbiology
- Abstract
Objective: Carnobacterium maltaromaticum is considered an emerging pathogen of salmonids in the United States and around the world., Methods: Bacterial cultures obtained from the posterior kidney and skin of moribund Rainbow Trout Oncorhynchus mykiss from a commercial aquaculture facility in Virginia, USA, grew C. maltaromaticum, which was confirmed by additional phenotypic and molecular characterization., Result: A presumptive diagnosis based on the clinical signs, necropsy observations, histopathology, and bacterial cultures was bacterial septicemia due to C. maltaromaticum., Conclusion: This represents the first documentation of C. maltaromaticum in Rainbow Trout from Virginia., (© 2023 The Authors. Journal of Aquatic Animal Health published by Wiley Periodicals LLC on behalf of American Fisheries Society.)
- Published
- 2023
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31. Hyporthodus griseofasciatus (Perciformes: Epinephelidae), a new species of deep-water grouper from the west coast of Australia.
- Author
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Moore GI, Wakefield CB, DiBattista JD, and Newman SJ
- Subjects
- Animals, Australia, Water, Western Australia, Perciformes anatomy & histology, Bass genetics
- Abstract
A new species of deep-water epinephelid fish is described from the west coast of Australia based on 14 specimens, 99-595 mm standard length. Hyporthodus griseofasciatus sp. nov. is endemic to Western Australia from Barrow Island to Two Peoples Bay in depths of 76-470 m. It has a series of eight grey bands alternating with eight brown bands along the body and the soft dorsal, soft anal and caudal fin margins are pale cream to white. It is distinguished from its nearest congener, H. ergastularius, by the presence of a star-like pattern of radiating lines on the head versus an overall brownish colour in the latter as well as significant differences in the quantitative analyses of 25 morphological characters. The two species have allopatric distributions on either side of the Australian continent. H. griseofasciatus is distinguished from H. octofasciatus by several grey bands being distinctly narrower than other grey bands (vs. all grey bands subequal in the latter) and the presence of broad white margins on the dorsal, caudal and anal fins (vs. narrow or absent in the latter). Some scale counts appear to also differ. Analyses of mitochondrial cytochrome oxidase subunit 1 sequences revealed reciprocally monophyletic clades with fixed differences and genetic distances typical of recently diverged species of fishes., (© 2022 Fisheries Society of the British Isles.)
- Published
- 2022
- Full Text
- View/download PDF
32. Mixed medullary and follicular cell thyroid carcinoma in a dog.
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Newman SJ, Yanez RA, and Kiupel M
- Subjects
- Humans, Dogs, Male, Animals, Thyroglobulin, Calcitonin, Chromogranins, Carcinoma, Medullary pathology, Carcinoma, Medullary ultrastructure, Carcinoma, Medullary veterinary, Adenocarcinoma, Follicular diagnosis, Adenocarcinoma, Follicular surgery, Adenocarcinoma, Follicular veterinary, Thyroid Neoplasms surgery, Thyroid Neoplasms veterinary, Thyroid Neoplasms pathology, Dog Diseases diagnosis, Dog Diseases surgery, Dog Diseases pathology
- Abstract
A 12-y-old, castrated male Weimaraner dog was presented for a wellness examination. A 7-cm, firm mass was palpated on the left, ventral, mid-lateral neck. The neck mass was removed surgically and submitted for histopathology. A thyroid carcinoma was diagnosed based on microscopic examination. Immunohistochemistry for chromogranin-A, calcitonin, and thyroglobulin identified dual immunoreactivity of the latter two, and a final diagnosis was of a well-differentiated, compact, mixed medullary and follicular cell thyroid carcinoma. These neoplasms are rare in humans and have not been reported in dogs, to our knowledge.
- Published
- 2022
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33. SMART Drumlines Ineffective in Catching White Sharks in the High Energy Capes Region of Western Australia: Acoustic Detections Confirm That Sharks Are Not Always Amenable to Capture.
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Taylor SM, How J, Travers MJ, Newman SJ, Mountford S, Waltrick D, Dowling CE, Denham A, and Gaughan DJ
- Abstract
The management of human-shark interactions can benefit from the implementation of effective shark hazard mitigation measures. A Shark-Management-Alert-in-Real-Time (SMART) drumline trial in the Capes region of Western Australia was instigated after several serious incidents involving surfers and white sharks ( Carcharodon carcharias ). The project aimed to determine whether white sharks (target species), which were relocated after capture, remained offshore using satellite and acoustic tagging. Over a 27-month period, 352 fish were caught, 55% of which comprised tiger sharks ( Galeocerdo cuvier ). Ninety-one percent of animals were released alive in good condition. Only two white sharks were caught; both were relocated ≥ 1 km offshore before release and moved immediately further offshore after capture, remaining predominately in offshore waters for the duration of their 54-day and 186-day tag deployments. Our results confirm that desirable animal welfare outcomes can be achieved using SMART drumlines when response times are minimised. The low target catches and the detection of 24 other tagged white sharks within the study area supported the decision to cease the trial. Our results reiterate there is no simple remedy for dealing with the complexities of shark hazards and reinforce the importance of trialing mitigation measures under local conditions.
- Published
- 2022
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34. Author Correction: A multiple species, continent-wide, million-phenotype agronomic plant dataset.
- Author
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Newman SJ and Furbank RT
- Published
- 2022
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- View/download PDF
35. Virtual Multiple Mini-Interviews for Veterinary Admissions.
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Inzana KD, Vanderstichel R, and Newman SJ
- Subjects
- Animals, Humans, Reproducibility of Results, School Admission Criteria, Schools, Medical, COVID-19 epidemiology, COVID-19 veterinary, Education, Veterinary
- Abstract
Admissions teams are challenged to select the best applicants for their college. There is a growing emphasis on selecting applicants with personal attributes important for success in a variety of veterinary careers, but there is no clear consensus on how to best identify these individuals. A number of veterinary colleges are utilizing multiple mini-interviews (MMIs), a highly structured type of interview in this selection process. However, due to travel restrictions currently associated with COVID-19, many are now considering virtual MMIs. Long Island University (LIU) took the step to conduct MMIs virtually for its inaugural class before the pandemic restrictions occurred, largely because it hoped to reduce the cost of admission by eliminating travel costs. In this process, we encountered a unique set of challenges, the resolution of which we believe constitutes best practices for virtual MMIs. This report describes the design and execution of an MMI for LIU. We were able to interview 340 applicants in 7 days. Based on feedback from applicants as well as raters, most considered it an acceptable means of interviewing students. Both raters and applicants expressed a high degree of satisfaction with the process, and we were able to separate applicants based on MMI scores with 88% reliability.
- Published
- 2022
- Full Text
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36. Effects of human footprint and biophysical factors on the body-size structure of fished marine species.
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Bosch NE, Monk J, Goetze J, Wilson S, Babcock RC, Barrett N, Clough J, Currey-Randall LM, Fairclough DV, Fisher R, Gibbons BA, Harasti D, Harvey ES, Heupel MR, Hicks JL, Holmes TH, Huveneers C, Ierodiaconou D, Jordan A, Knott NA, Malcolm HA, McLean D, Meekan M, Newman SJ, Radford B, Rees MJ, Saunders BJ, Speed CW, Travers MJ, Wakefield CB, Wernberg T, and Langlois TJ
- Subjects
- Animals, Australia, Body Size, Fisheries, Fishes, Humans, Conservation of Natural Resources, Ecosystem
- Abstract
Marine fisheries in coastal ecosystems in many areas of the world have historically removed large-bodied individuals, potentially impairing ecosystem functioning and the long-term sustainability of fish populations. Reporting on size-based indicators that link to food-web structure can contribute to ecosystem-based management, but the application of these indicators over large (cross-ecosystem) geographical scales has been limited to either fisheries-dependent catch data or diver-based methods restricted to shallow waters (<20 m) that can misrepresent the abundance of large-bodied fished species. We obtained data on the body-size structure of 82 recreationally or commercially targeted marine demersal teleosts from 2904 deployments of baited remote underwater stereo-video (stereo-BRUV). Sampling was at up to 50 m depth and covered approximately 10,000 km of the continental shelf of Australia. Seascape relief, water depth, and human gravity (i.e., a proxy of human impacts) were the strongest predictors of the probability of occurrence of large fishes and the abundance of fishes above the minimum legal size of capture. No-take marine reserves had a positive effect on the abundance of fishes above legal size, although the effect varied across species groups. In contrast, sublegal fishes were best predicted by gradients in sea surface temperature (mean and variance). In areas of low human impact, large fishes were about three times more likely to be encountered and fishes of legal size were approximately five times more abundant. For conspicuous species groups with contrasting habitat, environmental, and biogeographic affinities, abundance of legal-size fishes typically declined as human impact increased. Our large-scale quantitative analyses highlight the combined importance of seascape complexity, regions with low human footprint, and no-take marine reserves in protecting large-bodied fishes across a broad range of species and ecosystem configurations., (© 2021 The Authors. Conservation Biology published by Wiley Periodicals LLC on behalf of Society for Conservation Biology.)
- Published
- 2022
- Full Text
- View/download PDF
37. Author Correction: Explainable machine learning models of major crop traits from satellite-monitored continent-wide field trial data.
- Author
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Newman SJ and Furbank RT
- Published
- 2022
- Full Text
- View/download PDF
38. Complementary evidence for small-scale spatial assemblages of the exploited grass emperor (Lethrinus laticaudis) in the Shark Bay World Heritage Area, Western Australia.
- Author
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Fairclough DV, Ayvazian SG, and Newman SJ
- Subjects
- Animals, Bays, Ecosystem, Fishes, Humans, Hunting, Poaceae, Western Australia, Sharks
- Abstract
Understanding the connectivity of exploited fish populations is critical to their management under both rapid and long-term environmental change. Patterns of connectivity are unknown for most fishes in the Shark Bay World Heritage Area (Western Australia), a large, shallow embayment in the eastern Indian Ocean, vulnerable to marine heatwaves. The composition of oxygen (δ
18 O) and carbon (δ13 C) stable isotopes in whole otoliths of the recreationally-important reef fish Lethrinus laticaudis did not differ between Shark Bay's two large inner gulfs, separated by the Peron Peninsula. However, significant differences were found between pairs of locations with different salinities over a spatial scale of ∼60 km within each gulf. Misclassification of samples was greatest between locations mostly in different gulfs, but with similar salinities (15-41%), and rare between adjacent locations in the same gulf with different salinities (0-5%). This is influenced by the strong correlation (ρ = 0.93) between δ18 O in otoliths and the salinity gradient of the two gulfs, and further supported by a lack of correlation in the similarities of isotope compositions and distances between locations (ρ = 0.16). Fish samples from each of the different locations were composed of multiple year-classes, yet the otolith chemistry distinguished them at a minimum distance of 16 km apart, indicating that small-scale connectivity of L. laticaudis is likely during the majority of their life cycle. Physical barriers to movement of post-settlement individuals (land masses, expansive seagrass and sand) between the small, isolated reefs of Shark Bay may reduce large scale connectivity, which instead would occur mostly by egg and larval dispersal. The probable scale of connectivity of post-settlement L. laticaudis indicates that this major recreational fishing target species may be vulnerable to localised over-exploitation and negative environmental effects on population sources and sinks within this shallow embayment. Maintaining sustainable spawning biomass at scales relevant to the extent of connectivity for such a species in a World Heritage Area is an important management consideration., (Crown Copyright © 2021. Published by Elsevier Ltd. All rights reserved.)- Published
- 2022
- Full Text
- View/download PDF
39. Pathology in Practice.
- Author
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Newman SJ, Gerhold RW, and Smith SA
- Subjects
- Animals, Animal Diseases diagnosis
- Published
- 2021
- Full Text
- View/download PDF
40. Age, growth and reproductive life-history characteristics infer a high population productivity for the sustainably fished protogynous hermaphroditic yellowspotted rockcod (Epinephelus areolatus) in north-western Australia.
- Author
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Boddington DK, Wakefield CB, Fisher EA, Fairclough DV, Harvey ES, and Newman SJ
- Subjects
- Animals, Female, Male, Reproduction, Sex Determination Processes, Western Australia, Bass, Perciformes
- Abstract
The yellowspotted rockcod, Epinephelus areolatus, is a small-sized grouper that is widely distributed throughout the Indo-Pacific, where it forms a valuable component of the harvest derived from multispecies fisheries along continental and insular shelves. Samples of E. areolatus were collected from 2012 to 2018 from commercial catches and research surveys in the Kimberley, Pilbara and Gascoyne regions of north-western Australia to improve the understanding of the life history, inherent vulnerability and stock status of this species. Histological analysis of gonads (n = 1889) determined that E. areolatus was a monandric protogynous hermaphrodite. Non-functional spermatogenic crypts were dispersed within the ovaries of 23% of mature functioning females; nonetheless, these crypts were not observed during the immature female phase. The length and age at which 50% of females matured were 266 mm total length (L
T ) and 2.7 years, respectively. The spawning period was protracted over 10-12 months of the year with biannual peaks at the start of spring and autumn (i.e., September and March) when the photoperiod was at its mid-range (i.e., 12.1 h). Estimates of the lengths and ages at which 50% of E. areolatus change sex from female to male were very similar (i.e., <5% difference) between the Kimberley and Pilbara regions, i.e., L 50 sc of 364 and 349 mm LT and A 50 sc of 7.9 and 7.3 years, respectively. A maximum age of 19 years was observed in all three regions, but there was significant regional variation in growth. These variations in growth were not correlated with latitude; instead a parabolic relationship was evident, where the smallest mean length-at-age and fastest growth rates (k) occurred in the mid-latitudes of the Pilbara region. In the Kimberley and Pilbara regions, individuals were not fully selected by commercial fish traps until 5-6 years of age, hence, several years after reaching maturity. These life-history characteristics infer a high population productivity, which underpins the sustainable harvest of this species, despite comprising the largest catches of all epinephelids in the multispecies tropical fisheries across north-western Australia., (© 2021 Fisheries Society of the British Isles.)- Published
- 2021
- Full Text
- View/download PDF
41. Explainable machine learning models of major crop traits from satellite-monitored continent-wide field trial data.
- Author
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Newman SJ and Furbank RT
- Subjects
- Australia, Spacecraft, Crops, Agricultural physiology, Life History Traits, Machine Learning, Models, Biological, Remote Sensing Technology
- Abstract
Four species of grass generate half of all human-consumed calories. However, abundant biological data on species that produce our food remain largely inaccessible, imposing direct barriers to understanding crop yield and fitness traits. Here, we assemble and analyse a continent-wide database of field experiments spanning 10 years and hundreds of thousands of machine-phenotyped populations of ten major crop species. Training an ensemble of machine learning models, using thousands of variables capturing weather, ground sensor, soil, chemical and fertilizer dosage, management and satellite data, produces robust cross-continent yield models exceeding R
2 = 0.8 prediction accuracy. In contrast to 'black box' analytics, detailed interrogation of these models reveals drivers of crop behaviour and complex interactions predicting yield and agronomic traits. These results demonstrate the capacity of machine learning models to interrogate large datasets, generate new and testable outputs and predict crop behaviour, highlighting the powerful role of data in the future of food., (© 2021. The Author(s), under exclusive licence to Springer Nature Limited.)- Published
- 2021
- Full Text
- View/download PDF
42. Does the benthic biota or fish assemblage within a large targeted fisheries closure differ to surrounding areas after 12 years of protection in tropical northwestern Australia?
- Author
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Langlois TJ, Wakefield CB, Harvey ES, Boddington DK, and Newman SJ
- Subjects
- Animals, Australia, Biota, Ecosystem, Fishes, Conservation of Natural Resources, Fisheries
- Abstract
A large (~2450 km
2 ) offshore (~75 km) targeted fisheries closure (TFC) area was implemented on the North West Shelf of Australia (NWS) in 1998 as part of a suite of management controls to address overfishing concerns, and in the process to potentially mitigate any impacts of trawling to benthic habitats. Twelve years later, the benthic biota and fish assemblages in the TFC were assessed using stereo-video and compared with adjacent areas that have been consistently fished with a range of commercial fishing methods. The remote nature of the region has meant that these areas would be inaccessible to recreational fishers. After 12 years of protection there were significant differences between the TFC and comparable fished areas in both the composition and the height of biogenic structures, however the magnitude of these differences were subtle, except for branching soft corals, which were significantly taller in the TFC area. Despite the relatively young age of the TFC, significant differences in the fish abundance and biomass compositions were driven by the slower growing, longer lived and inherently less productive fishery target species. The abundance of Lutjanus sebae (red emperor) and Epinephelus multinotatus (Rankin cod), and the associated biomass of L. sebae and Pristipomoides multidens (goldband snapper) were all greater within the TFC. However, neither the abundance or biomass of the relatively shorter lived and more productive fishery species (e.g. the bluespotted emperor Lethrinus punctulatus and the brownstripe snapper Lutjanus vitta) were greater within the TFC. Growth rates of benthic biota across the NWS are unknown, however the limited detectable differences in benthic biota between the TFC and fished areas, suggests that either recovery of the benthic biota is slow and may not yet be at a threshold for detection and/or alternatively that current fishing activities are not causing adverse impacts to biogenic structures. These large, offshore targeted fishery closures provide a useful reference point to examine the natural variability, growth and recovery of benthic biota and fish assemblages after the cessation of fishing., (Copyright © 2021. Published by Elsevier Ltd.)- Published
- 2021
- Full Text
- View/download PDF
43. Increased connectivity and depth improve the effectiveness of marine reserves.
- Author
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Goetze JS, Wilson S, Radford B, Fisher R, Langlois TJ, Monk J, Knott NA, Malcolm H, Currey-Randall LM, Ierodiaconou D, Harasti D, Barrett N, Babcock RC, Bosch NE, Brock D, Claudet J, Clough J, Fairclough DV, Heupel MR, Holmes TH, Huveneers C, Jordan AR, McLean D, Meekan M, Miller D, Newman SJ, Rees MJ, Roberts KE, Saunders BJ, Speed CW, Travers MJ, Treml E, Whitmarsh SK, Wakefield CB, and Harvey ES
- Subjects
- Animals, Australia, Ecosystem, Fisheries, Fishes, Oceans and Seas, Biodiversity, Conservation of Natural Resources
- Abstract
Marine reserves are a key tool for the conservation of marine biodiversity, yet only ~2.5% of the world's oceans are protected. The integration of marine reserves into connected networks representing all habitats has been encouraged by international agreements, yet the benefits of this design has not been tested empirically. Australia has one of the largest systems of marine reserves, providing a rare opportunity to assess how connectivity influences conservation success. An Australia-wide dataset was collected using baited remote underwater video systems deployed across a depth range from 0 to 100 m to assess the effectiveness of marine reserves for protecting teleosts subject to commercial and recreational fishing. A meta-analytical comparison of 73 fished species within 91 marine reserves found that, on average, marine reserves had 28% greater abundance and 53% greater biomass of fished species compared to adjacent areas open to fishing. However, benefits of protection were not observed across all reserves (heterogeneity), so full subsets generalized additive modelling was used to consider factors that influence marine reserve effectiveness, including distance-based and ecological metrics of connectivity among reserves. Our results suggest that increased connectivity and depth improve the aforementioned marine reserve benefits and that these factors should be considered to optimize such benefits over time. We provide important guidance on factors to consider when implementing marine reserves for the purpose of increasing the abundance and size of fished species, given the expected increase in coverage globally. We show that marine reserves that are highly protected (no-take) and designed to optimize connectivity, size and depth range can provide an effective conservation strategy for fished species in temperate and tropical waters within an overarching marine biodiversity conservation framework., (© 2021 The Authors. Global Change Biology published by John Wiley & Sons Ltd.)
- Published
- 2021
- Full Text
- View/download PDF
44. The Benefits of Rental Assistance for Children's Health and School Attendance in the United States.
- Author
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Fenelon A, Boudreaux M, Slopen N, and Newman SJ
- Subjects
- Adolescent, Black People, Child, Ethnicity, Humans, Schools, United States, Black or African American, Child Health, Housing
- Abstract
Programs that provide affordable and stable housing may contribute to better child health and thus to fewer missed days of school. Drawing on a unique linkage of survey and administrative data, we use a quasi-experimental approach to examine the impact of rental assistance programs on missed days of school due to illness. We compare missed school days due to illness among children receiving rental assistance with those who will enter assistance within two years of their interview, the average length of waitlists for federal rental assistance. Overall, we find that children who receive rental assistance miss fewer days of school due to illness relative to those in the pseudo-waitlist group. We demonstrate that rental assistance leads to a reduction in the number of health problems among children and thus to fewer days of school missed due to illness. We find that the effect of rental assistance on missed school days is stronger for adolescents than for younger children. Additionally, race-stratified analyses reveal that rental assistance leads to fewer missed days due to illness among non-Hispanic White and Hispanic/Latino children; this effect, however, is not evident for non-Hispanic Black children, the largest racial/ethnic group receiving assistance. These findings suggest that underinvestment in affordable housing may impede socioeconomic mobility among disadvantaged non-Hispanic White and Hispanic/Latino children. In contrast, increases in rental assistance may widen racial/ethnic disparities in health among disadvantaged children, and future research should examine why this benefit is not evident for Black children., (Copyright © 2021 The Authors.)
- Published
- 2021
- Full Text
- View/download PDF
45. A large-scale experiment finds no evidence that a seismic survey impacts a demersal fish fauna.
- Author
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Meekan MG, Speed CW, McCauley RD, Fisher R, Birt MJ, Currey-Randall LM, Semmens JM, Newman SJ, Cure K, Stowar M, Vaughan B, and Parsons MJG
- Subjects
- Animals, Environmental Monitoring, Remote Sensing Technology, Western Australia, Acoustics instrumentation, Ecosystem, Fisheries statistics & numerical data, Fishes growth & development, Population Dynamics
- Abstract
Seismic surveys are used to locate oil and gas reserves below the seabed and can be a major source of noise in marine environments. Their effects on commercial fisheries are a subject of debate, with experimental studies often producing results that are difficult to interpret. We overcame these issues in a large-scale experiment that quantified the impacts of exposure to a commercial seismic source on an assemblage of tropical demersal fishes targeted by commercial fisheries on the North West Shelf of Western Australia. We show that there were no short-term (days) or long-term (months) effects of exposure on the composition, abundance, size structure, behavior, or movement of this fauna. These multiple lines of evidence suggest that seismic surveys have little impact on demersal fishes in this environment., Competing Interests: The authors declare no competing interest., (Copyright © 2021 the Author(s). Published by PNAS.)
- Published
- 2021
- Full Text
- View/download PDF
46. Mammary carcinoma arising in an adenoma in a ewe.
- Author
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Newman SJ, Smith SA, and Zimmerman K
- Subjects
- Adenoma complications, Adenoma veterinary, Animals, Carcinoma diagnosis, Carcinoma pathology, Female, Mammary Neoplasms, Animal pathology, Sheep, Sheep Diseases pathology, Sheep, Domestic, Carcinoma veterinary, Mammary Glands, Animal pathology, Mammary Neoplasms, Animal diagnosis, Sheep Diseases diagnosis
- Abstract
A large, firm, multi-cystic mammary gland mass grew slowly over 4 y in a 12-y-old, female Finn-Shetland cross sheep. A diagnosis of epithelial malignancy was suspected following fine-needle aspiration cytology at 30 mo after initial observation. The sheep was euthanized when the flock was downsized 18 mo later. A field postmortem examination revealed a large mammary mass, but an absence of metastases to internal organs. Imprint cytology of the mammary tissue supported a benign proliferative process. Histologically, mammary tissue was obliterated by cystic, tubular, and papillary adenomatous arrangements of mammary epithelium, with an anaplastic component, consistent with mammary carcinoma arising in an adenoma. IHC showed strong nuclear positivity to the antibody against progesterone receptor and minimal positivity to the antibody against estrogen receptor alpha expression. Intrinsic subtyping for basal or luminal epithelial origin was attempted through adaptation of companion animal IHC classification panels; high- and low-molecular-weight cytokeratins (CK5, CK8, CK18) failed to stain, but p63 expression for basal epithelium was positive.
- Published
- 2021
- Full Text
- View/download PDF
47. A multiple species, continent-wide, million-phenotype agronomic plant dataset.
- Author
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Newman SJ and Furbank RT
- Subjects
- Australia, Biodiversity, Phenotype, Crops, Agricultural chemistry, Crops, Agricultural growth & development
- Abstract
A critical shortage of 'big' agronomic data is placing an unnecessary constraint on the conduct of public agronomic research, imparting barriers to model development and testing. Here, we address this problem by providing a large non-relational database of agronomic trials, linked to intensive management and observational data, run under a unified experimental framework. The National Variety Trials (NVTs) represent a decade-long experimental trial network, conducted across thousands of Australian field sites using highly standardised randomised controlled designs. The NVTs contain over a million machine-measured phenotypic observations, aggregated from density-controlled populations containing hundreds of millions of plants and thousands of released plant varieties. These data are linked to hundreds of thousands of metadata observations including standardised soil tests, fertiliser and pesticide input data, crop rotation data, prior farm management practices, and in-field sensors. Finally, these data are linked to a suite of ground and remote sensing observations, arranged into interpolated daily- and ten-day aggregated time series, to capture the substantial diversity in vegetation and environmental patterns across the continent-spanning NVT network.
- Published
- 2021
- Full Text
- View/download PDF
48. Fish associations with shallow water subsea pipelines compared to surrounding reef and soft sediment habitats.
- Author
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Schramm KD, Marnane MJ, Elsdon TS, Jones CM, Saunders BJ, Newman SJ, and Harvey ES
- Subjects
- Animals, Biodiversity, Biomass, Coral Reefs, Fisheries organization & administration, Fishes classification, Oceans and Seas, Western Australia, Conservation of Natural Resources methods, Ecosystem, Fishes physiology, Oil and Gas Fields
- Abstract
Offshore decommissioning activities are expected to increase as oil and gas subsea infrastructure becomes obsolete. Decisions on decommissioning alternatives will benefit from quantifying and understanding the marine communities associated with these structures. As a case study, fish assemblages associated with an inshore network of subsea pipelines located on the North West shelf of Western Australia were compared to those in surrounding natural reef and soft sediment habitats using remotely operated vehicles fitted with a stereo-video system (stereo-ROVs). The number of species, the abundance, biomass, feeding guild composition and the economic value of fishes were compared among habitats. The community composition of fish associated with pipelines was distinct from those associated with natural habitats, and was characterised by a greater abundance and/or biomass of fish from higher trophic levels (e.g. piscivores, generalist carnivores and invertivores), including many species considered to be of value to commercial and recreational fishers. Biomass of fish on pipelines was, on average, 20 times greater than soft sediments, and was similar to natural reefs. However, the biomass of species considered important to fisheries recorded on the pipelines was, on average 3.5 times greater than reef and 44.5 times greater than soft sediment habitats. This study demonstrates that fish assemblages on the pipeline infrastructure exhibit high ecological and socioeconomic values.
- Published
- 2021
- Full Text
- View/download PDF
49. Isolated reefs support stable fish communities with high abundances of regionally fished species.
- Author
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Birt MJ, Cure K, Wilson S, Newman SJ, Harvey ES, Meekan M, Speed C, Heyward A, Goetze J, and Gilmour J
- Abstract
Anthropogenic impacts at isolated and inaccessible reefs are often minimal, offering rare opportunities to observe fish assemblages in a relatively undisturbed state. The remote Rowley Shoals are regarded as one of the healthiest reef systems in the Indian Ocean with demonstrated resilience to natural disturbance, no permanent human population nearby, low visitation rates, and large protected areas where fishing prohibitions are enforced. We used baited remote underwater video systems (BRUVS) to quantify fish assemblages and the relative abundance of regionally fished species within the lagoon, on the slope and in the mesophotic habitat at the Rowley Shoals at three times spanning 14 years and compared abundances of regionally fished species and the length distributions of predatory species to other isolated reefs in the northeast Indian Ocean. Fish assemblage composition and the relative abundance of regionally fished species were remarkably stable through time. We recorded high abundances of regionally fished species relative to other isolated reefs, including globally threatened humphead Maori wrasse ( Cheilinus undulatu s) and bumphead parrotfish ( Bolbometopon muricatum ). Length distributions of fish differed among habitats at the Rowley Shoals, suggesting differences in ontogenetic shifts among species. The Cocos (Keeling) Islands typically had larger-bodied predatory species than at the Rowley Shoals. Differences in geomorphology, lagoonal habitats, and fishing history likely contribute to the differences among remote reefs. Rowley Shoals is a rare example of a reef system demonstrating ecological stability in reef fish assemblages during a time of unprecedented degradation of coral reefs., Competing Interests: The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (© 2021 The Authors. Ecology and Evolution published by John Wiley & Sons Ltd.)
- Published
- 2021
- Full Text
- View/download PDF
50. Histological characterization of the gastrointestinal tract of the adult horseshoe crab (Limulus polyphemus) with special reference to the stomach.
- Author
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Newman SJ and Smith SA
- Subjects
- Animals, Esophagus physiology, Esophagus ultrastructure, Horseshoe Crabs anatomy & histology, Stomach physiology, Stomach ultrastructure
- Abstract
The American horseshoe crab (Limulus polyphemus) is one of four extant species in the Order Xiphosura, subphylum Chelicerata, and are evolutionarily more closely related to scorpions and spiders, than crabs. The basic structure, function, and physiology of these invertebrates and their internal organs are not well documented in the literature. In this study, the gastrointestinal system, with a focus on the stomach, of adult L. polyphemus were assessed by gross and histologic methods to further characterize the pyloric valve, the lining of the ventricular lumen, and the muscular tunics of the stomach. Determination of normal anatomical structure of this organ system, along with characterization of the esophagus and intestinal tract, will set a standard against which tissue abnormalities, such as those seen with disease or pathology were to arise, would allow for better interpretation.
- Published
- 2021
- Full Text
- View/download PDF
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