31 results on '"Vasapollo, C."'
Search Results
2. New records of Albunea carabus (Linnaeus, 1758) (Decapoda: Anomura: Hippoidea) in the Tyrrhenian Sea, with notes on its ecology and distribution in the Italian seas
- Author
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Froglia, C., primary, Vasapollo, C., additional, Virgili, M., additional, Bargione, G., additional, Petetta, A., additional, De Marco, R., additional, and Lucchetti, A., additional
- Published
- 2021
- Full Text
- View/download PDF
3. Peer Review #1 of "Meiofaunal communities and nematode diversity characterizing the Secca delle Fumose shallow vent area (Gulf of Naples, Italy) (v0.1)"
- Author
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Vasapollo, C, additional
- Published
- 2020
- Full Text
- View/download PDF
4. Evidence of loggerhead sea turtle (Caretta caretta, Linnaeus, 1758) injuries caused by Rapido (beam) trawling in the Mediterranean
- Author
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Alessandro Lucchetti, Angelini, V., Furii, G., Pari, S., Vasapollo, C., and Virgili, M.
- Subjects
Loggerhead turtle ,Caretta caretta ,Sea turtle-fisheries interaction ,Rapido trawl ,Sea turtle injuries ,Mediterranean Sea - Abstract
The loggerhead turtle (Caretta caretta, Linnaeus, 1758) is the most abundant sea turtle species in the Mediterranean Sea, where commercial fishing appears to be the main driver of mortality. The North Adriatic Sea (central Mediterranean) is a major feeding habitat for turtles in the demersal stage. Its shallow and flat seabed is ideal for bottom-towed gears, making interactions with sea turtles and incidental catches unavoidable. We provide evidence of the impact of Rapido trawls (a type of beam trawl) on sea turtles through the analysis of the distinctive injuries sustained by four turtles.
- Published
- 2018
5. Length–weight relationships of bivalve species in Italian razor clam Ensis minor (Chenu, 1843) (Mollusca: Bivalvia) fishery
- Author
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Petetta, A., primary, Bargione, G., additional, Vasapollo, C., additional, Virgili, M., additional, and Lucchetti, A., additional
- Published
- 2019
- Full Text
- View/download PDF
6. New records of Albunea carabus(Linnaeus, 1758) (Decapoda: Anomura: Hippoidea) in the Tyrrhenian Sea, with notes on its ecology and distribution in the Italian seas
- Author
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Froglia, C., Vasapollo, C., Virgili, M., Bargione, G., Petetta, A., De Marco, R., and Lucchetti, A.
- Abstract
AbstractTwenty-four individuals of Albunea carabus(Linnaeus, 1758), a species rarely reported in the Mediterranean Sea, have recently been collected in the Tyrrhenian Sea (Italy) in hydraulic dredge surveys carried out to assess local razor clam stocks. They were found in sandy bottoms at depths of 1–6 m in association with the commercial bivalves Ensis minorand Chamelea gallinaand the decapods Diogenes pugilator, Portumnus latipesand Liocarcinus vernalis. The distribution of the species in the Italian seas is described based on a careful search of the available records. Notes on its reproductive biology and autoecology are also included.
- Published
- 2021
- Full Text
- View/download PDF
7. Sardine (Sardina pilchardus) in the GSA 17 (updated to 2013)
- Author
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(1) Angelini S., (1) Belardinelli A., (1) Biagiotti I., (1) Campanella F., (1) Canduci G., (1) Cingolani N., (1) Cikes Kec V., (1) Carpi P., (1) Colella S., (1) Costantini I., (1) Croci C., (1) De Felice A., (1) De Marco R., (1) Donato F., (1) Leonori I., (1) Martinelli M., (1) Malavolti S., Modic T., (1) Panfili M., Pengal P., (1) Santojanni A., (1) Vasapollo C., Zorica B., and Arneri E.
- Subjects
Valutazione delle risorse alieutiche - Abstract
Valutazione delle risorse alieutiche
- Published
- 2014
8. Sardine (Sardina pilchardus) in the GSA 17 (updated to 2012)
- Author
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(1) Carpi P., (1) Angelini S., (1) Belardinelli A., (1) Biagiotti I., (1) Campanella F., (1) Canduci G., (1) Cingolani N., Cikes Kec V., (1) Colella S., (1) Croci C., (1) De Felice A., (1) Donato F., (1) Leonori I., (1) Martinelli M., (1) Malavolti S., Modic T., (1) Panfili M., Pengal P., (1) Santojanni A., Ticina V., (1) Vasapollo C., Zorica B., and Arneri E.
- Subjects
Valutazione risorse alieutiche - Abstract
Valutazione risorse alieutiche
- Published
- 2014
9. Anchovy (Engraulis encrasicolus) in the GSA 17 (updated to 2013)
- Author
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(1) Angelini S., (1) Belardinelli A., (1) Biagiotti I., (1) Campanella F., (1) Canduci G., (1) Cingolani N., Cikes Kec V., (1) Carpi P., (1) Colella S., (1) Costantini I., (1) Croci C., (1) De Felice A., (1) De Marco R., (1) Donato F., (1) Leonori I., (1) Martinelli M., (1) Malavolti S., Modic T., (1) Panfili M., Pengal P., (1) Santojanni A., (1) Vasapollo C., Zorica B., and Arneri E.
- Subjects
Valutazione delle risorse alieutiche - Abstract
Valutazione delle risorse alieutiche
- Published
- 2014
10. Anchovy (Engraulis encrasicolus) in the GSA 17 (updated to 2012)
- Author
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(1) Carpi P., (1) Angelini S., (1) Belardinelli A., (1) Biagiotti I., (1) Campanella F., (1) Canduci G., (1) Cingolani N., Cikes Kec V., (1) Colella S., (1) Croci C., (1) De Felice A., (1) Donato F., (1) Leonori I., (1) Martinelli M., (1) Malavolti S., Modic T., (1) Panfili M., Pengal P., (1) Santojanni A., Ticina V., (1) Vasapollo C., Zorica B., and Arneri E.
- Subjects
Valutazione risorse alieutiche - Abstract
Valutazione risorse alieutiche
- Published
- 2014
11. Length–weight relationships of bivalve species in Italian razor clam Ensis minor(Chenu, 1843) (Mollusca: Bivalvia) fishery
- Author
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Petetta, A., Bargione, G., Vasapollo, C., Virgili, M., and Lucchetti, A.
- Abstract
AbstractLength–weight relationships of bivalve species collected during razor clam (Ensis minor) surveys along Italian coastal waters (Northern Adriatic and Tyrrhenian Sea) in the 3-year period 2016–2018 are reported. A total of 13,588 individuals, belonging to 12 bivalve species and 20 populations between the Adriatic and Tyrrhenian Seas, were sampled for this study. Analyzing growth parameters for each population, we found 11 allometries and nine isometries. About half of the species investigated showed different growth characteristics between the two areas.
- Published
- 2019
- Full Text
- View/download PDF
12. Density dependence in the spatial behaviour of anchovy and sardine across Mediterranean systems
- Author
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Giannoulaki, Marianna, Petitgas, Pierre, Barra, Marco, Tugores, Pilar, Vasapollo, C., Iglesias, M., Leonori, Iole, De Felice, Andrea, Bonanno, A., Basilone, G., Mazzola, Salvatore, Bigot, Jean-louis, Machias, Athanassios, and Pyrounaki, Maria M.
- Subjects
anchovy ,Centro Oceanográfico de Baleares ,spreading area index ,Mediterranean Sea ,Pesquerías ,sardine - Abstract
A spatial indicator—the spreading area index—is used to describe anchovy and sardine spatial distribution in relation to biomass variation and to look for ecosystem differences within the Mediterranean basin. Specifically, the variation in the spreading area index in relation to biomass was examined for different areas of the Mediterranean Sea (i.e. Aegean Sea, western Adriatic Sea, Strait of Sicily, Gulf of Lion, and Spanish Mediterranean waters). In order to capture the spatial variability of the population at different levels of fish density, acoustic survey data for the years of highest, lowest, and intermediate abundance were used. In a subsequent step standardized values of spreading area and biomass were estimated to allow comparisons. Results showed pronounced area differences. A significant relationship was revealed in the case of anchovy for areas with extended continental shelf (i.e. Aegean Sea, Adriatic Sea, and Gulf of Lion), indicating an increase in biomass with an increase in the spreading area. No relationship was found for areas dominated by narrow continental shelf and strong currents (i.e. Spanish Mediterranean waters and the Strait of Sicily). With regard to sardine, an increase in biomass was followed by an increase in the spreading area when estimates from the Aegean Sea, the Adriatic Sea, and the Strait of Sicily were considered together. The relationship was even more Abstracts–Theme Session B 9 pronounced when analysis was limited to the Aegean Sea and the Strait of Sicily. No relationship was found for the Spanish Mediterranean waters and the Gulf of Lion. This clearly implies that spatial indicators should be integrated into ecosystem management, taking into account that they can be area‐ or ecosystem‐dependent.
- Published
- 2012
13. MEDIAS GSA 17 e GSA 18. Pan-Mediterranean Acoustic Surveys in the Adriatic Sea. FAO Sub areas 37.2.1 and 37.2.2. Rapporto Finale Anno 2011
- Author
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Leonori I., De Felice A., Biagiotti I., Canduci G., Cingolani L., Giuliani G., Vasapollo C., Malavolti S., Penna P., Caccamo G., Grilli F., and Paschini E.
- Subjects
Adriatic Sea ,Engraulis encrasicolus ,Fishery acoustics ,Small pelagics ,Sardina pilchardus - Abstract
Monitoraggio tramite metodologia acustica della biomassa dei piccolo pelagici in Adriatico. Nel report vengono riportate le stime dell'abbondanza e della distribuzione spaziale di alici e sardine nel versante occidentale del Nord e Medio Adriatico (GSA 17) e del Sud Adriatico (GSA 18) ottenute dal'elaborazione dei dati acquisiti durante la campagna di survey acustico MEDIAS effettuata nel 2011 .
- Published
- 2012
14. Sardine (Sardina pilchardus) in the GSA 17
- Author
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(1) Carpi P., (1) Angelini S., (1) Belardinelli A., (1) Biagiotti I., (1) Campanella F., (1) Canduci G., (1) Cingolani N., ike? Ke? V., (1) Colella S., (1) Croci C., (1) De Felice A., (1) Donato F., (1) Leonori I., (1) Martinelli M., (1) Malavolti S., Modic T., (1) Panfili M., Pengal P., (1) Santojanni A., Ticina V., (1) Vasapollo C., Zorica B., and Arneri E.
- Published
- 2012
15. Anchovy (Engraulis encrasicolus) in the GSA 17
- Author
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(1) Carpi P., (1) Angelini S., (1) Belardinelli A., (1) Biagiotti I., (1) Campanella F., (1) Canduci G., (1) Cingolani N., ike? Ke? V., (1) Colella S., (1) Croci C., (1) De Felice A., (1) Donato F., (1) Leonori I., (1) Martinelli M., (1) Malavolti S., Modic T., (1) Panfili M., Pengal P., (1) Santojanni A., Ticina V., (1) Vasapollo C., Zorica B., and Arneri E.
- Published
- 2012
16. MEDIAS GSA 17 e GSA 18. Pan-Mediterranean Acoustic Surveys in the Adriatic Sea. FAO Sub areas 37.2.1 and 37.2.2. Rapporto Finale Anno 2010
- Author
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Leonori I. De Felice A., Biagiotti I., Canduci G., Campanella F., Cingolani L., Giuliani G., Vasapollo C., Penna P., Caccamo G., Grilli F., and Paschini E.
- Subjects
Adriatic Sea ,Fishery acoustics ,Small pelagics - Abstract
Il progetto riguarda il monitoraggio tramite metodologia acustica della biomassa dei piccolo pelagici in Adriatico. Nel rapporto sono riportate le stimare dell'abbondanza e della distribuzione spaziale di alici e sardine nel versante italiano del Nord e Medio Adriatico (GSA 17) e del Sud Adriatico (GSA 18) ottenute dall'elaborazione dei dati acquisiti durante la campagna di survey acustico MEDIAS 2010.
- Published
- 2011
17. Spatial distribution and dynamics of Solea solea (Linneo, 1758) in the central and northern Adriatic Sea
- Author
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Grati, Fabio, Fabi, Gianna, Scarcella Giuseppe, Polidori, P, Domenichetti, F, Bolognini, L, Gramolini, Roberto, Vasapollo, C, Giovanardi, Otello, Raicevich, Sasa, Celić, Igor, Vrgoč, Nedo, Isajlović, Igor, Jenič, A, and Marčeta Bojan
- Subjects
Solea solea ,spatial distribution ,Adriatic Sea - Abstract
U ovom radu opisan je prostorna rasprostranjenost i dinamika populacije običnog lista (Solea solea) u Jadranskom moru na osnovu rezultata dobivenih tijekom "Rapido Trawl Survey" istraživanja u okviru projekta SoleMon. Podaci su prikupljani u razdoblju od 2005. do 2010. god. na području srednjeg i sjevernog Jadrana na nasumično raspoređenim postajama korištenjem rampona.
- Published
- 2011
18. Spatio-temporal variability of Borer Polychaetes in Posidonia oceanica beds and its relation to meadow structure
- Author
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VASAPOLLO, C., primary, VILLANO, L., additional, and GAMBI, M. C., additional
- Published
- 2014
- Full Text
- View/download PDF
19. Spatio-temporal variability in Posidonia oceanica seagrass meadows of the Western Mediterranean: shoot density and plant features
- Author
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Vasapollo, C, primary and Gambi, MC, additional
- Published
- 2012
- Full Text
- View/download PDF
20. An overview of bottom trawl selectivity in the Mediterranean Sea
- Author
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LUCCHETTI, VIRGILI, VASAPOLLO, PETETTA, BARGIONE, LI VELI, BR?IC, SALA, Lucchetti A., Virgili M., Vasapollo C., Petetta A., Bargione G., Veli D.L., Brcic J., and Sala A.
- Subjects
Mediterranean climate ,Environmental Engineering ,Bottom trawl ,biology ,Trawling ,Fishing ,Sustainable fishery ,Selectivity ,Demersal fish ,Mediterranean Sea ,Aquatic Science ,Oceanography ,Fish stock ,biology.organism_classification ,Bottom trawling ,Fishery ,Mediterranean sea ,Environmental science ,Ecology, Evolution, Behavior and Systematics - Abstract
In the Mediterranean Sea, where bottom trawling for demersal species is the most important fishery in terms of landings, around 75% of the assessed fish stocks are overfished. Its status as one of the world’s most heavily exploited seas and the one subject to the highest trawling pressure has become a global concern. An extensive review of bottom trawl selectivity studies was performed to assess the sustainability of this fishery in the Mediterranean; the selectivity parameters were collected from 93 peer-reviewed publications of 10 countries, totalling 742 records and 65 species. The review highlighted that i) the catch of bottom trawls commonly employed in the Mediterranean, even complying with current regulations on codend meshes, still includes immature individuals for 64-68% of the species investigated, and individuals under the minimum conservation reference size (MCRS) for 78% of the species investigated, and that ii) the MCRS set for 59% of the species analyzed is well below their length at first maturity, and is therefore ecologically inadequate. Although square-mesh codends are slightly more selective, the models developed herein demonstrate that improving size and species selectivity would require considerably larger meshes, which may significantly reduce profitability. The urgent need to reduce the biological impacts of bottom trawling in the Mediterranean should be addressed by promoting the adoption of more ecologically sustainable fishing gears through the introduction of more selective meshes or gear modifications.
- Published
- 2021
21. An intertidal life: Combined effects of acidification and winter heatwaves on a coralline alga (Ellisolandia elongata) and its associated invertebrate community
- Author
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Andrea Bordone, Alberto Castelli, Chiara Lombardi, Carlo Pipitone, Joachim Langeneck, Matteo Nannini, Elisa Romanelli, Claudio Vasapollo, Carlotta di Marzo, Mar Santos, Regina Kolzenburg, Gabriella Cerrati, Mario Adani, Giancarlo Raiteri, Federica Ragazzola, Agnese Marchini, Ragazzola, F., Marchini, A., Adani, M., Bordone, A., Castelli, A., Cerrati, G., Kolzenburg, R., Langeneck, J., di Marzo, C., Nannini, M., Raiteri, G., Romanelli, E., Santos, M., Vasapollo, C., Pipitone, C., and Lombardi, C.
- Subjects
0106 biological sciences ,Mediterranean climate ,6–10) climate change ,Acidification ,Coralline algae ,Heatwaves ,Mediterranean ecosystem ,Peracarida ,Polychaeta ,Climate Change ,Intertidal zone ,Aquatic Science ,6–10) climate change, Acidification, Coralline algae, Heatwaves, Mediterranean ecosystem, Peracarida, Polychaeta ,Oceanography ,010603 evolutionary biology ,01 natural sciences ,Algae ,Animals ,Seawater ,Marine ecosystem ,Reef ,Ecosystem ,Invertebrate ,geography ,geography.geographical_feature_category ,biology ,Coral Reefs ,Ecology ,010604 marine biology & hydrobiology ,fungi ,Community structure ,General Medicine ,Hydrogen-Ion Concentration ,biology.organism_classification ,Invertebrates ,Pollution ,Rhodophyta - Abstract
In coastal marine ecosystems coralline algae often create biogenic reefs. These calcareous algal reefs affect their associated invertebrate communities via diurnal oscillations in photosynthesis, respiration and calcification processes. Little is known about how these biogenic reefs function and how they will be affected by climate change. We investigated the winter response of a Mediterranean intertidal biogenic reef, Ellissolandia elongata exposed in the laboratory to reduced pH conditions (i.e. ambient pH – 0.3, RCP 8.5) together with an extreme heatwave event (+1.4 °C for 15 days). Response variables considered both the algal physiology (calcification and photosynthetic rates) and community structure of the associated invertebrates (at taxonomic and functional level). The combination of a reduced pH with a heatwave event caused Ellisolandia elongata to significantly increase photosynthetic activity. The high variability of calcification that occurred during simulated night time conditions, indicates that there is not a simple, linear relationship between these two and may indicate that it will be resilient to future conditions of climate change. In contrast, the associated fauna were particularly negatively affected by the heatwave event, which impoverished the communities as opportunistic taxa became dominant. Local increases in oxygen and pH driven by the algae can buffer the microhabitat in the algal fronds, thus favouring the survival of small invertebrates.
- Published
- 2021
22. Age and Growth of Striped Venus Clam Chamelea gallina (Linnaeus, 1758) in the Mid-Western Adriatic Sea: A Comparison of Three Laboratory Techniques
- Author
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Massimo Virgili, Giada Bargione, Claudio Vasapollo, Alessandro Lucchetti, Andrea Petetta, Fortunata Donato, Bargione G., Vasapollo C., Donato F., Virgili M., Petetta A., and Lucchetti A.
- Subjects
acetate peel ,0106 biological sciences ,010504 meteorology & atmospheric sciences ,lcsh:QH1-199.5 ,growth ,Shell (structure) ,Venus ,Ocean Engineering ,Aquatic Science ,lcsh:General. Including nature conservation, geographical distribution ,Von bertalanffy ,Oceanography ,01 natural sciences ,striped venus clam ,Animal science ,Growth rate ,lcsh:Science ,thin sections ,0105 earth and related environmental sciences ,Mathematics ,Water Science and Technology ,Global and Planetary Change ,biology ,Cold season ,010604 marine biology & hydrobiology ,surface growth rings ,Growth curve (biology) ,biology.organism_classification ,age ,surface growth ring ,acetate peels ,lcsh:Q ,Chamelea gallina - Abstract
Age and growth studies provide critical data for clam fishery management. Three aging techniques, thin sections and acetate peel replicas – which involve shell sectioning – and surface growth rings were used to estimate the age and growth of Chamelea gallina populations in the mid-western Adriatic Sea. Their results were compared to identify the most reliable and least time-consuming approach. There were no significant differences between the two shell sectioning techniques (χ2 = 4.66, df = 3, p = 0.198), which were described by the same von Bertalanffy (VBF) growth curve parameters (L8 = 43.9, k = 0.26, t0 = −0.84), whereas significantly different L8 and k values were found between the two shell sectioning techniques and surface growth rings (L8: χ2 = 13.62, df = 1, p < 0.001; k: χ2 = 9.18, df = 1, p < 0.002; these statistics refer to the comparison between acetate peels and surface growth rings). The latter approach proved unreliable and error-prone, as it underestimated age and overestimated the growth rate (L8 = 26.4, k = 1.91, t0 = −0.11). Although the thin sections and acetate peel techniques both provide reliable age and growth estimates, the former approach was less time-consuming. Our analyses demonstrated that shell growth is slower in the cold season and in older specimens and that it has slowed down over the past few decades.
- Published
- 2020
23. Intertidal Mediterranean Coralline Algae Habitat Is Expecting a Shift Toward a Reduced Growth and a Simplified Associated Fauna Under Climate Change
- Author
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Chiara Lombardi, Federica Gazzola, Joachim Langeneck, Alberto Castelli, Luigi Musco, Agnese Marchini, Jurgita Zekonyte, Federica Ragazzola, Claudio Vasapollo, Matteo Nannini, Maria Chiara Manauzzi, Chulin Jiang, Gabriella Cerrati, Marchini, A., Ragazzola, F., Vasapollo, C., Castelli, A., Cerrati, G., Gazzola, F., Jiang, C., Langeneck, J., Manauzzi, M. C., Musco, L., Nannini, M., Zekonyte, J., and Lombardi, C.
- Subjects
0106 biological sciences ,Mediterranean climate ,Bioconstruction ,010504 meteorology & atmospheric sciences ,lcsh:QH1-199.5 ,Fauna ,Intertidal zone ,Biodiversity ,Climate change ,Coralline algae ,Intertidal ecosystem ,Peracarid crustaceans ,Polychaetes ,Ocean Engineering ,Aquatic Science ,Intertidal ecology ,lcsh:General. Including nature conservation, geographical distribution ,Oceanography ,01 natural sciences ,bioconstruction ,intertidal ecosystem ,Mediterranean sea ,Peracarid crustacean ,14. Life underwater ,lcsh:Science ,Biology ,0105 earth and related environmental sciences ,Water Science and Technology ,biodiversity ,Global and Planetary Change ,biology ,Ecology ,010604 marine biology & hydrobiology ,Ocean acidification ,peracarid crustaceans ,15. Life on land ,biology.organism_classification ,climate change ,coralline algae ,polychaetes ,Habitat ,13. Climate action ,Environmental science ,lcsh:Q - Abstract
Coralline algae represent the most important bioconstructors in the Mediterranean Sea and are currently impaired by the effects of climate change (CC), particularly by global warming (GW) and ocean acidification (OA). We studied the effects of these two drivers on Ellisolandia elongata, an intertidal coralline algae that is known to host a rich biodiversity of associated fauna. We cultured turfs of E. elongata in experimental conditions of increased temperature and OA (using the values of the IPCC scenario RCP- 8.5 expected for 2100: actual mean temperature +3 °C and pH=7.78), and estimated alteration of algal linear growth and community structure, focusing especially on peracarid crustaceans and annelids. Our findings revealed a decrease in linear growth, yet with no significant changes on structural integrity, and a simplification of associated community, in particular for peracarids. Our study contributes to understand community-level response to CC drivers, highlighting the vulnerability of the fauna associated to an important Mediterranean marine habitat.
- Published
- 2019
24. Skeletal alterations and polymorphism in a Mediterranean bryozoan at natural CO2 vents
- Author
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Silvia Cocito, Claudio Vasapollo, Paul D. Taylor, Maria Cristina Gambi, Chiara Lombardi, Cocito, S., Taylor, P. D., Vasapollo, C., Gambi, M. C., and Lombardi, C.
- Subjects
Zooid ,biology ,Ecology ,Bryozoan ,Ocean acidification ,biology.organism_classification ,Schizoporella ,Avicularia ,chemistry.chemical_compound ,Mediterranean sea ,chemistry ,Lophophore ,Mediterranean Sea ,Carbonate ,Animal Science and Zoology ,Seawater ,CO2 ,Polymorphism ,Developmental Biology - Abstract
Colonies of the cheilostome bryozoan Schizoporella errata were grown at a site near Ischia Island (Tyrrhenian Sea, Italy) where volcanogenic CO2 emissions lower seawater pH to 7.76, simulating levels of ocean acidification predicted for the end of the present century. Compared with colonies from a control site (mean pH = 8.09), putative defensive polymorphs (avicularia) were significantly fewer, and retarded growth of zooidal basal and lateral walls was evident at the low pH site. The lower proportion of avicularia suggests a switch in resource allocation away from defence to favouring rapid growth. In addition, corrosion of the skeleton was observed in both new and old zooids at the low pH site, and feeding zooids were slightly smaller but had larger orifices for the protrusion of feeding lophophores. These findings corroborate previous studies demonstrating potential dissolution of carbonate skeletons in low pH seawater, while providing new insight into the possible ability of colonial species to respond to ocean acidification by adjusting resource allocation between zooids of different types.
- Published
- 2011
25. Multi-benthic size approach to unveil different environmental conditions in a Mediterranean harbor area (Ancona, Adriatic Sea, Italy).
- Author
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Baldrighi E, Pizzini S, Punzo E, Santelli A, Strafella P, Scirocco T, Manini E, Fattorini D, and Vasapollo C
- Subjects
- Humans, Ecosystem, Geologic Sediments chemistry, Environmental Monitoring, Italy, Trace Elements, Polycyclic Aromatic Hydrocarbons analysis
- Abstract
Harbors are hubs of human activity and are subject to the continuous discharge and release of industrial, agricultural, and municipal waste and contaminants. Benthic organisms are largely known to reflect environmental conditions they live in. Despite meio- and macrofauna interacting within the benthic system, they are ecologically distinct components of the benthos and as such may not necessarily respond to environmental conditions and/or disturbances in the same way. However, in a few field studies the spatial patterns of meio- and macrofauna have been simultaneously compared. In the present study, we assess the response and patterns in the abundance, diversity, and distribution of the two benthic size classes to the different environmental conditions they live in ( i.e ., sediment concentrations of selected trace metals and polycyclic aromatic hydrocarbons (PAHs); organic matter contents and grain size) characterizing the Ancona Harbor (Adriatic Sea). Meio- and macrofauna provided partially similar types of information depending on the indices used (univariate measures or community structure/species composition) and the different 'response-to-stress'. The community structure ( i.e ., taxa composition) of both benthic size components clearly showed differences among sampling stations located from inside to outside the harbor, reflecting the marked environmental heterogeneity and disturbance typically characterizing these systems. Notwithstanding, the univariate measures ( i.e ., meio- and macrofauna total abundance, diversity indices and equitability) didn't show similar spatial patterns. Meiofauna were likely to be more sensitive to the effects of environmental features and contaminants than macrofauna. Overall, trace metals and PAHs affected the community composition of the two benthic components, but only the meiofauna abundance and diversity were related to the environmental variables considered ( i.e ., quantity and quality of organic matter). Our results pinpoint the importance of studying both meio- and macrofauna communities, which could provide greater insight into the processes affecting the investigated area and reveal different aspects of the benthic ecosystems in response to harbor conditions., Competing Interests: Claudio Vasapollo is an Academic Editor for PeerJ., (© 2023 Baldrighi et al.)
- Published
- 2023
- Full Text
- View/download PDF
26. An intertidal life: Combined effects of acidification and winter heatwaves on a coralline alga (Ellisolandia elongata) and its associated invertebrate community.
- Author
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Ragazzola F, Marchini A, Adani M, Bordone A, Castelli A, Cerrati G, Kolzenburg R, Langeneck J, di Marzo C, Nannini M, Raiteri G, Romanelli E, Santos M, Vasapollo C, Pipitone C, and Lombardi C
- Subjects
- Animals, Climate Change, Coral Reefs, Hydrogen-Ion Concentration, Invertebrates, Seawater, Ecosystem, Rhodophyta
- Abstract
In coastal marine ecosystems coralline algae often create biogenic reefs. These calcareous algal reefs affect their associated invertebrate communities via diurnal oscillations in photosynthesis, respiration and calcification processes. Little is known about how these biogenic reefs function and how they will be affected by climate change. We investigated the winter response of a Mediterranean intertidal biogenic reef, Ellissolandia elongata exposed in the laboratory to reduced pH conditions (i.e. ambient pH - 0.3, RCP 8.5) together with an extreme heatwave event (+1.4 °C for 15 days). Response variables considered both the algal physiology (calcification and photosynthetic rates) and community structure of the associated invertebrates (at taxonomic and functional level). The combination of a reduced pH with a heatwave event caused Ellisolandia elongata to significantly increase photosynthetic activity. The high variability of calcification that occurred during simulated night time conditions, indicates that there is not a simple, linear relationship between these two and may indicate that it will be resilient to future conditions of climate change. In contrast, the associated fauna were particularly negatively affected by the heatwave event, which impoverished the communities as opportunistic taxa became dominant. Local increases in oxygen and pH driven by the algae can buffer the microhabitat in the algal fronds, thus favouring the survival of small invertebrates., (Copyright © 2021 Elsevier Ltd. All rights reserved.)
- Published
- 2021
- Full Text
- View/download PDF
27. Reburial potential and survivability of the striped venus clam (Chamelea gallina) in hydraulic dredge fisheries.
- Author
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Bargione G, Petetta A, Vasapollo C, Virgili M, and Lucchetti A
- Abstract
The striped venus clam (Chamelea gallina) is the main edible bivalve living in Italian waters. According to Regulation (EU) 2020/2237, undersized specimens (total length of the shell, < 22 mm) must be returned to the sea. C. gallina specimens of different size classes that had undergone hydraulic dredging and mechanized sorting were analysed for reburial ability in a laboratory tank and for survivability in the laboratory (135 clams, 21 days) and at sea (320 clams, 15 days). In the tank experiments, the reburial times (T
50 and T90 ) and the upper (+) and lower (-) confidence intervals (CIs) of the whole sample were about 4 h (CI+ 4.4, CI- 3.6) and 8 h (CI+ 8.2, CI- 7.7), respectively, and were significantly shorter for the medium-sized clams (22-24.9 mm) than for the smallest (< 21.9 mm) and the largest (> 25 mm) specimens. For the field survivability experiments, clams under and above the minimum conservation reference size were placed in separate metal cages. Survival rates were 94.8% and 96.2% respectively in the laboratory and at sea, without significant differences between the two experiments or among size classes. These findings conclusively demonstrate that C. gallina specimens returned to the sea have a very high survival probability and that they can contribute to mitigate the overexploitation of natural populations.- Published
- 2021
- Full Text
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28. Pots vs trammel nets: a catch comparison study in a Mediterranean small-scale fishery.
- Author
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Petetta A, Vasapollo C, Virgili M, Bargione G, and Lucchetti A
- Abstract
Passive bottom-set nets are the most widely used fishing gears in Mediterranean small-scale fisheries (SSFs). Trammel nets, in particular, have key advantages such as their ease of use and handling and high capture efficiency for numerous commercial species. However, they entail high discard rates (5-44% of the total catch) connected to high mortality, thus exerting an adverse impact on benthic communities, besides catching individuals of commercial species under the minimum conservation reference size (MCRS) and specimens of protected species. Fish pots are seen as alternative and a more sustainable gear type that allow reducing discards in SSFs. In this study, a collapsible pot was tested at three coastal sites in the north-western Adriatic Sea (GFCM GSA 17) to compare its catch efficiency with that of the local traditional trammel nets. Data analysis demonstrated a similar catch efficiency for the commercial species, both among sites and as a whole. Moreover, the trammel net caught a larger amount of discards, both in terms of species number and of CPUE
W . The catch comparison study involved the two most abundant landed species, common cuttlefish Sepia officinalis and annular sea bream Diplodus annularis . The pots were more effective for S. officinalis , whereas the trammel net was more effective for the shorter length classes for D. annularis , which were mostly under the MCRS (12 cm). The innovative pots could provide a valuable alternative to the trammel nets traditionally used in the Adriatic Sea, at least in certain areas and periods. Their main advantages include that they do not require a different rigging and they can be used without bait, while their foldable design allows large numbers to be easily loaded on board SSF vessels. The results of this pilot study indicate that pots can achieve the objectives of reducing discards and bycatch in SSFs without penalizing the catch of commercial species., Competing Interests: The authors declare that they have no competing interests., (© 2020 Petetta et al.)- Published
- 2020
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29. Bottom trawl catch comparison in the Mediterranean Sea: Flexible Turtle Excluder Device (TED) vs traditional gear.
- Author
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Vasapollo C, Virgili M, Petetta A, Bargione G, Sala A, and Lucchetti A
- Subjects
- Animals, Conservation of Natural Resources, Endangered Species, Fisheries, Mediterranean Sea, Equipment Design classification, Food Supply instrumentation, Turtles physiology
- Abstract
The Mediterranean Sea is a biodiversity hotspot where intense fishing pressure is associated with high bycatch rates of protected species (sea turtles and cetaceans) and top predators (sharks). Since the conservation of these species has become a priority, fishery scientists are faced with the challenge of reducing incidental catch, which entails high rates of mortality. Among the species threatened by fishing activities, the loggerhead turtle (Caretta caretta) is a charismatic species considered as "vulnerable" at the global scale. In the Mediterranean Sea trawl nets are the gears with the highest probability of catching protected species incidentally. A new flexible Turtle Excluder Device (TED) was tested for the first time on commercial bottom trawlers to assess its effectiveness in reducing bycatch in the Mediterranean Sea. Analysis of the total catches of the hauls made with and without the TED showed that the difference in terms of weight was not significant. The catch of the main commercial species showed similar rates without a significant loss of size (i.e. total length) with the exception of the largest anglerfish (Lophius spp.). The bycatch of control nets included mostly rays and sharks, but never turtles, although the authors learned from the crews of other vessels operating in the same areas at the time of the trials that they had caught some loggerhead turtles. Our study demonstrates that TED scan be adopted without significantly affecting commercial catch. This informs fishers and managers for a practical and effective means that may reduce the bycatch of threatened species in coastal Mediterranean demersal multispecies fisheries. The measures involving gear modifications require significant investment but they are technically feasible and are capable of improving the conservation prospects of these endangered species. Besides ensuring normal earnings, the TED induced a significant reduction of debris and litter in the codend, thus reducing catch sorting time and improving catch quality., Competing Interests: The authors have declared that no competing interests exist.
- Published
- 2019
- Full Text
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30. Life-history traits of the spiny dogfish Squalus acanthias in the Adriatic Sea.
- Author
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Bargione G, Donato F, La Mesa M, Mazzoldi C, Riginella E, Vasapollo C, Virgili M, and Lucchetti A
- Subjects
- Anatomy, Cross-Sectional, Animals, Body Size, Female, Male, Reproduction, Seasons, Sexual Maturation, Squalus acanthias anatomy & histology, Life History Traits, Spine anatomy & histology, Squalus acanthias physiology
- Abstract
Pivotal life history traits concerning age structure and reproduction of the spiny dogfish (Squalus acanthias, Linnaeus 1758) were investigated in the Adriatic Sea from mid February 2012 to mid July 2013 and in 2016. The whole sample consisted of 176 females and 150 males, ranging between 217-1025 mm and 219-875 mm, respectively. The individual age, which was estimated using a cross-sectioning technique of the second dorsal-fin spine, ranged from 0 to 13+ years for females and from 0 to 9+ years for males. Based on the length-at-age estimates, the Gompertz growth parameters were L
∞ = 1130 mm, k = 0.18 and L∞ = 920 mm, k = 0.24 for females and males, respectively. The size at sexual maturity (L50 ) was 659 mm for females and 575 mm for males, corresponding to 7.5 and 5.5 years of age (A50 ), respectively. Mean biennial fecundity was approximately 11 embryos/female and 12 ripe oocytes/female. Mature males occurred during much of the sampling period, while mature females with nearly full-term embryos were exclusively recorded in May 2013 and July 2016. Monitoring of catches conducted in a sample port of the north Adriatic (Chioggia) over the past 20 years has shown fluctuating trends in landings, with peaks during the summer reproductive season.- Published
- 2019
- Full Text
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31. An interview-based approach to assess sea turtle bycatch in Italian waters.
- Author
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Lucchetti A, Vasapollo C, and Virgili M
- Abstract
The loggerhead sea turtle ( Caretta caretta , Linnaeus, 1758) is the most abundant sea turtle species in the Mediterranean Sea, where commercial fishing appears to be the main driver of mortality. So far, information on sea turtle bycatch in Italy is limited both in space and time due to logistical problems in data collected through onboard observations and on a limited number of vessels involved. In the present study, sea turtle bycatch in Italian waters was examined by collecting fishermen's information on turtle bycatch through an interview-based approach. Their replies enabled the identification of bycatch hotspots in relation to area, season and to the main gear types. The most harmful fishing gears resulted to be trawl nets, showing the highest probabilities of turtle bycatch with a hotspot in the Adriatic Sea, followed by longlines in the Ionian Sea and in the Sicily Channel. Estimates obtained by the present results showed that more than 52,000 capture events and 10,000 deaths occurred in Italian waters in 2014, highlighting a more alarming scenario than earlier studies. The work shows that in case of poor data from other sources, direct questioning of fishermen and stakeholders could represent a useful and cost-effective approach capable of providing sufficient data to estimate annual bycatch rates and identify high-risk gear/location/season combinations., Competing Interests: Alessandro Lucchetti is a permanent researcher of the CNR-ISMAR (Ancona, Italy). Claudio Vasapollo is a research assistant at the CNR-ISMAR (Ancona, Italy). Massimo Virgili works as a technician at the CNR-ISMAR (Ancona, Italy).
- Published
- 2017
- Full Text
- View/download PDF
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