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Nest suitability, fine-scale population structure and male-mediated dispersal of a solitary ground nesting bee in an urban landscape

López-Uribe, Margarita M ; Morreale, Stephen J ; Santiago, Christine K ; Danforth, Bryan N Banks, Sam C

PloS one, 2015-05, Vol.10 (5), p.e0125719-e0125719 [Periódico revisado por pares]

United States: Public Library of Science

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Título:
Nest suitability, fine-scale population structure and male-mediated dispersal of a solitary ground nesting bee in an urban landscape
Autor: López-Uribe, Margarita M ; Morreale, Stephen J ; Santiago, Christine K ; Danforth, Bryan N
Banks, Sam C
Assuntos: Analysis ; Animal behavior ; Animals ; Bees ; Bees - genetics ; Bees - physiology ; Colletes inaequalis ; Conservation ; Dispersal ; Dispersion ; Ecology ; Ecosystems ; Evolution ; Female ; Females ; Flowering ; Gene flow ; Genetic aspects ; Genetic diversity ; Genetic structure ; Genetic Variation ; Genotype ; Genotypes ; Habitats ; Humans ; Hymenoptera ; Inbreeding ; Inbreeding depression ; Male ; Males ; Microsatellite Repeats ; Microsatellites ; Models, Genetic ; Nesting ; Nests ; Plant reproduction ; Pollination ; Pollinators ; Population ; Population Density ; Population Dynamics ; Population number ; Population structure ; Population studies ; Population viability ; Populations ; Spatial distribution ; Urban areas ; Urban Renewal ; Urbanization
É parte de: PloS one, 2015-05, Vol.10 (5), p.e0125719-e0125719
Notas: ObjectType-Article-1
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Competing Interests: The authors have declared that no competing interests exist.
Conceived and designed the experiments: MMLU SJM. Performed the experiments: MMLU CKS. Analyzed the data: MMLU SJM. Contributed reagents/materials/analysis tools: BND. Wrote the paper: MMLU SJM BND.
Current address: Department of Entomology, North Carolina State University, Raleigh, North Carolina, 27695, United States of America
Current address: Harvard Medical School, Boston, Massachusetts, 02115, United States of America
Descrição: Bees are the primary pollinators of flowering plants in almost all ecosystems. Worldwide declines in bee populations have raised awareness about the importance of their ecological role in maintaining ecosystem functioning. The naturally strong philopatric behavior that some bee species show can be detrimental to population viability through increased probability of inbreeding. Furthermore, bee populations found in human-altered landscapes, such as urban areas, can experience lower levels of gene flow and effective population sizes, increasing potential for inbreeding depression in wild bee populations. In this study, we investigated the fine-scale population structure of the solitary bee Colletes inaequalis in an urbanized landscape. First, we developed a predictive spatial model to detect suitable nesting habitat for this ground nesting bee and to inform our field search for nests. We genotyped 18 microsatellites in 548 female individuals collected from nest aggregations throughout the study area. Genetic relatedness estimates revealed that genetic similarity among individuals was slightly greater within nest aggregations than among randomly chosen individuals. However, genetic structure among nest aggregations was low (Nei's GST = 0.011). Reconstruction of parental genotypes revealed greater genetic relatedness among females than among males within nest aggregations, suggesting male-mediated dispersal as a potentially important mechanism of population connectivity and inbreeding avoidance. Size of nesting patch was positively correlated with effective population size, but not with other estimators of genetic diversity. We detected a positive trend between geographic distance and genetic differentiation between nest aggregations. Our landscape genetic models suggest that increased urbanization is likely associated with higher levels of inbreeding. Overall, these findings emphasize the importance of density and distribution of suitable nesting patches for enhancing bee population abundance and connectivity in human dominated habitats and highlights the critical contribution of landscape genetic studies for enhanced conservation and management of native pollinators.
Editor: United States: Public Library of Science
Idioma: Inglês

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Nest suitability, fine-scale population structure and male-mediated dispersal of a solitary ground nesting bee in an urban landscape

López-Uribe, Margarita M ; Morreale, Stephen J ; Santiago, Christine K ; Danforth, Bryan N Banks, Sam C

United States: Public Library of Science

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