caa a22 4500 445858001 CHVBK 20180317145434.0 cr unu---uuuuu 170323e20111001xx s 000 0 eng 10.1007/s10592-011-0221-1 doi (NATIONALLICENCE)springer-10.1007/s10592-011-0221-1 Population genetic structure of orchid bees (Euglossini) in anthropogenically altered landscapes [Elektronische Daten] [Y. Zimmermann, D. Schorkopf, R. Moritz, R. Pemberton, J. Quezada-Euan, T. Eltz] Habitat degradation and fragmentation are widespread phenomena in tropical regions. Negative effects on the biota are numerous, ranging from interruption of gene flow among populations, to the loss of genetic diversity within populations, to a decline in species richness over time. Orchid bees (Hymenoptera: Apidae: Euglossini) are of major conservation interest due to their function as pollinators of numerous orchid species and other tropical plants. Here, we used microsatellite markers to investigate the effects of geographic distance and habitat fragmentation on gene flow among populations. Populations of Euglossa dilemma in three geographic regions—the Yucatán peninsula (Mexico), Veracruz (Mexico), and Florida (USA)—were genetically structured predominantly across the regions, with the strength of differentiation among populations being positively correlated with geographic distance. Within geographic regions only little substructure was found, suggesting that dispersal is substantial in the absence of geographic or ecological barriers. In a second study, patterns of genetic differentiation among eight species of Euglossa were not related to habitat fragmentation following deforestation in southern Mexico (Veracruz). Specifically, most bee populations in the 9,800ha forest remnant of Los Tuxtlas (Volcano San Martin) were neither differentiated from, nor had less genetic diversity than, populations in near-continuous forest separated from Los Tuxtlas by 130km of agricultural land. Either occasional long distance dispersal across open areas has buffered the expected genetic effects of fragmentation, or the history of fragmentation in southern Mexico is too recent to have caused measurable shifts in allelic composition. Springer Science+Business Media B.V., 2011 Euglossa viridissima nationallicence Euglossa dilemma nationallicence Gene flow nationallicence Long-distance dispersal nationallicence Forest fragmentation nationallicence Pollinator decline nationallicence Zimmermann Y. Sensory Ecology Group, University of Düsseldorf, Universitätsstraße 1, 40225, Düsseldorf, Germany aut Schorkopf D. Department for Neurobiology, Faculty of Life Sciences, University of Vienna, Althanstraße 14, 1090, Vienna, Austria aut Moritz R. Molecular Ecology Research Group, University of Halle-Wittenberg, Halle, Germany aut Pemberton R. Fairchild Tropical Botanic Garden and Florida Museum of Natural History, c/o 2121 SW 28th Terrace, 33312, Fort Lauderdale, FL, USA aut Quezada-Euan J. Departamento de Apicultura, Campus de Ciencias Biológicas y Agropecuarias, Universidad Autónoma de Yucatán, 97100, Mérida, Mexico aut Eltz T. Sensory Ecology Group, University of Düsseldorf, Universitätsstraße 1, 40225, Düsseldorf, Germany aut Conservation Genetics Springer Netherlands 12/5(2011-10-01), 1183-1194 1566-0621 12:5<1183 2011 12 10592 https://doi.org/10.1007/s10592-011-0221-1 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10592-011-0221-1 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Zimmermann Y. Sensory Ecology Group, University of Düsseldorf, Universitätsstraße 1, 40225, Düsseldorf, Germany aut NATIONALLICENCE 700 1- Schorkopf D. Department for Neurobiology, Faculty of Life Sciences, University of Vienna, Althanstraße 14, 1090, Vienna, Austria aut NATIONALLICENCE 700 1- Moritz R. Molecular Ecology Research Group, University of Halle-Wittenberg, Halle, Germany aut NATIONALLICENCE 700 1- Pemberton R. Fairchild Tropical Botanic Garden and Florida Museum of Natural History, c/o 2121 SW 28th Terrace, 33312, Fort Lauderdale, FL, USA aut NATIONALLICENCE 700 1- Quezada-Euan J. Departamento de Apicultura, Campus de Ciencias Biológicas y Agropecuarias, Universidad Autónoma de Yucatán, 97100, Mérida, Mexico aut NATIONALLICENCE 700 1- Eltz T. Sensory Ecology Group, University of Düsseldorf, Universitätsstraße 1, 40225, Düsseldorf, Germany aut NATIONALLICENCE 773 0- Conservation Genetics Springer Netherlands 12/5(2011-10-01), 1183-1194 1566-0621 12:5<1183 2011 12 10592 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer