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198 results on '"Lozier, Jeffrey D."'

13. Ecological niche models and coalescent analysis of gene flow support recent allopatric isolation of parasitoid wasp populations in the Mediterranean.

Author

Lozier, Jeffrey D and Mills, Nicholas J

Subjects
Animals, Wasps, Cluster Analysis, Bayes Theorem, Ecology, Emigration and Immigration, Geography, Models, Theoretical, Models, Biological, Models, Genetic, Time Factors, Mediterranean Sea, Genetic Speciation, Gene Flow, Genetic Variation, Models, Biological, Genetic, Theoretical, General Science & Technology
Abstract

BackgroundThe integration of multiple complementary approaches is a powerful way to understand the processes of diversification and speciation. The parasitoid wasp Aphidius transcaspicus Telenga (Hymenoptera: Braconidae) is a parasitoid of Hyalopterus aphids across a wide geographic range. This species shows a remarkable degree of genetic structure among western, central, and eastern Mediterranean population clusters. In this paper we attempt to better characterize this genetic structure.Methodology/principal findingsWe use a Bayesian coalescent analysis of gene flow under the Isolation with Migration model using mitochondrial and microsatellite markers together with climate-based ecological niche models to better understand the genetic structure of A. transcaspicus in the Mediterranean. The coalescent analysis revealed low levels of migration among western and eastern Mediterranean populations (Nm

Published
2009

20. Different components of biodiversity mediate two ecosystem functions derived from naturally assembled filter‐feeder communities.

Author

Hopper, Garrett W., González, Irene Sánchez, Bucholz, Jamie R., Lozier, Jeffrey D., and Atkinson, Carla L.

Subjects
BIOLOGICAL extinction, ANIMAL communities, BIOTIC communities, ENDANGERED species, WATER filtration, NUTRIENT cycles, ECOSYSTEMS
Abstract

Positive biodiversity–ecosystem functioning (BEF) relationships observed in experiments can be challenging to identify in natural communities. Freshwater animal communities are disproportionately harmed by global change that results in accelerated species loss. Understanding how animal‐mediated ecosystems functions may change as a result of global change can help determine whether biodiversity or species‐specific conservation will be effective at maintaining function. Unionid mussels represent half of imperiled species in freshwater ecosystems globally and perform important ecological functions such as water filtration and nutrient recycling. We explored BEF relationships for 22 naturally assembled mussel aggregations spanning three river basins. We used the Price equation to partition the contributions of species richness, composition, and context dependent interactions to two functions of interests: spatially‐explicit standing‐stock biomass (indirect proxy for function) and species‐specific nitrogen (N) excretion rates (direct measure of N recycling). Random and non‐random species loss each reduced biomass and N recycling. Many rare species with low contributions to biomass contributed to standing‐stock biomass in all basins. Widespread species had variable function across sites, such that context dependent effects (CDEs) outweighed richness effects on standing‐stock biomass in two basins, and were similar to richness effects in the third. Richness effects outweighed CDEs for N recycling. Thus, many species contributed a low proportion to overall N‐recycling; a product we attribute to the high evenness and functional effect trait diversity associated with these communities. The loss of low‐functioning species reduced the function of persisting species. This novel result using observational data adds evidence that positive species interactions, such as interspecific facilitation, may be a mechanism by which biodiversity enhances ecosystem functions. Our work stresses the importance of evaluating species‐specific contributions to functions in diverse systems, such as nutrient cycling when maintaining specific animal‐mediated functions is a management goal because indirect proxies may not completely characterize BEF relationships. [ABSTRACT FROM AUTHOR]

Published
2023
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23. Relocation risky for bumblebee colonies

Author

Lozier, Jeffrey D., Cameron, Sydney A., Duennes, Michelle A., Strange, James P., Williams, Paul H., Goulson, David, Brown, Mark J. F., Morales, Carolina, and Jepsen, Sarina

Published
2015

30. Divergence in Body Mass, Wing Loading, and Population Structure Reveals Species-Specific and Potentially Adaptive Trait Variation Across Elevations in Montane

Author

Lozier, Jeffrey D., Parsons, Zachary M., Rachoki, Lois, and Jackson, Jason M.

Subjects
Biodiversity, Taxonomy
Abstract

Lozier, Jeffrey D., Parsons, Zachary M., Rachoki, Lois, Jackson, Jason M. (2021): Divergence in Body Mass, Wing Loading, and Population Structure Reveals Species-Specific and Potentially Adaptive Trait Variation Across Elevations in Montane. Insect Systematics and Diversity (AIFB) 5 (5): 1-15, DOI: 10.1093/isd/ixab012, URL: http://dx.doi.org/10.1093/isd/ixab012

Published
2021

40. Substantial genetic divergence and lack of recent gene flow support cryptic speciation in a colour polymorphic bumble bee (Bombus bifarius) species complex

Author

Ghisbain, Guillaume, primary, Lozier, Jeffrey D., additional, Rahman, Sarthok Rasique, additional, Ezray, Briana D., additional, Tian, Li, additional, Ulmer, Jonah M., additional, Heraghty, Sam D., additional, Strange, James P., additional, Rasmont, Pierre, additional, and Hines, Heather M., additional

Published
2020
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45. Genetic evidence from mitochondrial, nuclear, and endosymbiont markers for the evolution of host plant associated species in the aphid genus hyalopterus (Hemiptera: Aphididae)

Author

Lozier, Jeffrey D., Roderick, George K., and Mills, Nicholas J.

Subjects
Aphididae -- Genetic aspects, Aphididae -- Growth, Nucleotide sequence -- Research, Insect-plant relationships -- Research, Prunus -- Physiological aspects, Prunus -- Genetic aspects, Company growth, Biological sciences
Abstract

A research examining the extent of genetic divergence associated with geography and host use in the aphid genus Hyalopterus, a cosmopolitan group, which originates from the Mediterranean a region, is presented. Using mitochondrial COI sequences, 16S rDNA sequences from the aphid endosymbiont Buchnera aphidicola and nine microsatellite loci, three deeply divergent lineages structured in large part by specific associations with plum, almond, and peach trees was found.

Published
2007

50. The genomes of two key bumblebee species with primitive eusocial organization

Author

Sadd, Ben M., Barribeau, Seth M., Bloch, Guy, de Graaf, Dirk C., Dearden, Peter, Elsik, Christine G., Gadau, Jürgen, Grimmelikhuijzen, Cornelis J. P., Hasselmann, Martin, Lozier, Jeffrey D., Robertson, Hugh M., Smagghe, Guy, Stolle, Eckart, Van Vaerenbergh, Matthias, Waterhouse, Robert M., Bornberg-Bauer, Erich, Klasberg, Steffen, Bennett, Anna K., Câmara, Francisco, Guigó, Roderic, Hoff, Katharina, Mariotti, Marco, Munoz-Torres, Monica, Murphy, Terence, Santesmasses, Didac, Amdam, Gro V., Beckers, Matthew, Beye, Martin, Biewer, Matthias, Bitondi, Márcia M. G., Blaxter, Mark L., Bourke, Andrew F. G., Brown, Mark J. F., Buechel, Severine D., Cameron, Rossanah, Cappelle, Kaat, Carolan, James C., Christiaens, Olivier, Ciborowski, Kate L., Clarke, David F., Colgan, Thomas J., Collins, David H., Cridge, Andrew G., Dalmay, Tamas, Dreier, Stephanie, du Plessis, Louis, Duncan, Elizabeth, Erler, Silvio, Evans, Jay, Falcon, Tiago, Flores, Kevin, Freitas, Flávia C. P., Fuchikawa, Taro, Gempe, Tanja, Hartfelder, Klaus, Hauser, Frank, Helbing, Sophie, Humann, Fernanda C., Irvine, Frano, Jermiin, Lars S., Johnson, Claire E., Johnson, Reed M., Jones, Andrew K., Kadowaki, Tatsuhiko, Kidner, Jonathan H., Koch, Vasco, Köhler, Arian, Kraus, F. Bernhard, Lattorff, H. Michael G., Leask, Megan, Lockett, Gabrielle A., Mallon, Eamonn B., Antonio, David S. Marco, Marxer, Monika, Meeus, Ivan, Moritz, Robin F. A., Nair, Ajay, Näpflin, Kathrin, Nissen, Inga, Niu, Jinzhi, Nunes, Francis M. F., Oakeshott, John G., Osborne, Amy, Otte, Marianne, Pinheiro, Daniel G., Rossié, Nina, Rueppell, Olav, Santos, Carolina G., Schmid-Hempel, Regula, Schmitt, Björn D., Schulte, Christina, Simões, Zilá L. P., Soares, Michelle P. M., Swevers, Luc, Winnebeck, Eva C., Wolschin, Florian, Yu, Na, Zdobnov, Evgeny M., Aqrawi, Peshtewani K., Blankenburg, Kerstin P., Coyle, Marcus, Francisco, Liezl, Hernandez, Alvaro G., Holder, Michael, Hudson, Matthew E., Jackson, LaRonda, Jayaseelan, Joy, Joshi, Vandita, Kovar, Christie, Lee, Sandra L., Mata, Robert, Mathew, Tittu, Newsham, Irene F., Ngo, Robin, Okwuonu, Geoffrey, Pham, Christopher, Pu, Ling-Ling, Saada, Nehad, Santibanez, Jireh, Simmons, DeNard, Thornton, Rebecca, Venkat, Aarti, Walden, Kimberly Ko, Wu, Yuan-Qing, Debyser, Griet, Devreese, Bart, Asher, Claire, Blommaert, Julie, Chipman, Ariel D., Chittka, Lars, Fouks, Bertrand, Liu, Jisheng, O'Neill, Meaghan P., Sumner, Seirian, Puiu, Daniela, Qu, Jiaxin, Salzberg, Steven L., Scherer, Steven E., Muzny, Donna M., Richards, Stephen, Robinson, Gene E., Gibbs, Richard A., Schmid-Hempel, Paul, Worley, Kim C., Sadd, Ben M., Barribeau, Seth M., Bloch, Guy, de Graaf, Dirk C., Dearden, Peter, Elsik, Christine G., Gadau, Jürgen, Grimmelikhuijzen, Cornelis J. P., Hasselmann, Martin, Lozier, Jeffrey D., Robertson, Hugh M., Smagghe, Guy, Stolle, Eckart, Van Vaerenbergh, Matthias, Waterhouse, Robert M., Bornberg-Bauer, Erich, Klasberg, Steffen, Bennett, Anna K., Câmara, Francisco, Guigó, Roderic, Hoff, Katharina, Mariotti, Marco, Munoz-Torres, Monica, Murphy, Terence, Santesmasses, Didac, Amdam, Gro V., Beckers, Matthew, Beye, Martin, Biewer, Matthias, Bitondi, Márcia M. G., Blaxter, Mark L., Bourke, Andrew F. G., Brown, Mark J. F., Buechel, Severine D., Cameron, Rossanah, Cappelle, Kaat, Carolan, James C., Christiaens, Olivier, Ciborowski, Kate L., Clarke, David F., Colgan, Thomas J., Collins, David H., Cridge, Andrew G., Dalmay, Tamas, Dreier, Stephanie, du Plessis, Louis, Duncan, Elizabeth, Erler, Silvio, Evans, Jay, Falcon, Tiago, Flores, Kevin, Freitas, Flávia C. P., Fuchikawa, Taro, Gempe, Tanja, Hartfelder, Klaus, Hauser, Frank, Helbing, Sophie, Humann, Fernanda C., Irvine, Frano, Jermiin, Lars S., Johnson, Claire E., Johnson, Reed M., Jones, Andrew K., Kadowaki, Tatsuhiko, Kidner, Jonathan H., Koch, Vasco, Köhler, Arian, Kraus, F. Bernhard, Lattorff, H. Michael G., Leask, Megan, Lockett, Gabrielle A., Mallon, Eamonn B., Antonio, David S. Marco, Marxer, Monika, Meeus, Ivan, Moritz, Robin F. A., Nair, Ajay, Näpflin, Kathrin, Nissen, Inga, Niu, Jinzhi, Nunes, Francis M. F., Oakeshott, John G., Osborne, Amy, Otte, Marianne, Pinheiro, Daniel G., Rossié, Nina, Rueppell, Olav, Santos, Carolina G., Schmid-Hempel, Regula, Schmitt, Björn D., Schulte, Christina, Simões, Zilá L. P., Soares, Michelle P. M., Swevers, Luc, Winnebeck, Eva C., Wolschin, Florian, Yu, Na, Zdobnov, Evgeny M., Aqrawi, Peshtewani K., Blankenburg, Kerstin P., Coyle, Marcus, Francisco, Liezl, Hernandez, Alvaro G., Holder, Michael, Hudson, Matthew E., Jackson, LaRonda, Jayaseelan, Joy, Joshi, Vandita, Kovar, Christie, Lee, Sandra L., Mata, Robert, Mathew, Tittu, Newsham, Irene F., Ngo, Robin, Okwuonu, Geoffrey, Pham, Christopher, Pu, Ling-Ling, Saada, Nehad, Santibanez, Jireh, Simmons, DeNard, Thornton, Rebecca, Venkat, Aarti, Walden, Kimberly Ko, Wu, Yuan-Qing, Debyser, Griet, Devreese, Bart, Asher, Claire, Blommaert, Julie, Chipman, Ariel D., Chittka, Lars, Fouks, Bertrand, Liu, Jisheng, O'Neill, Meaghan P., Sumner, Seirian, Puiu, Daniela, Qu, Jiaxin, Salzberg, Steven L., Scherer, Steven E., Muzny, Donna M., Richards, Stephen, Robinson, Gene E., Gibbs, Richard A., Schmid-Hempel, Paul, and Worley, Kim C.

Abstract

BACKGROUND: The shift from solitary to social behavior is one of the major evolutionary transitions. Primitively eusocial bumblebees are uniquely placed to illuminate the evolution of highly eusocial insect societies. Bumblebees are also invaluable natural and agricultural pollinators, and there is widespread concern over recent population declines in some species. High-quality genomic data will inform key aspects of bumblebee biology, including susceptibility to implicated population viability threats. RESULTS: We report the high quality draft genome sequences of Bombus terrestris and Bombus impatiens, two ecologically dominant bumblebees and widely utilized study species. Comparing these new genomes to those of the highly eusocial honeybee Apis mellifera and other Hymenoptera, we identify deeply conserved similarities, as well as novelties key to the biology of these organisms. Some honeybee genome features thought to underpin advanced eusociality are also present in bumblebees, indicating an earlier evolution in the bee lineage. Xenobiotic detoxification and immune genes are similarly depauperate in bumblebees and honeybees, and multiple categories of genes linked to social organization, including development and behavior, show high conservation. Key differences identified include a bias in bumblebee chemoreception towards gustation from olfaction, and striking differences in microRNAs, potentially responsible for gene regulation underlying social and other traits. CONCLUSIONS: These two bumblebee genomes provide a foundation for post-genomic research on these key pollinators and insect societies. Overall, gene repertoires suggest that the route to advanced eusociality in bees was mediated by many small changes in many genes and processes, and not by notable expansion or depauperation.

Published
2015
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