Article: Effects of landscape heterogeneity on population genetic structure and demography of Amazonian phyllostomid bats
Mammal research. 2021 Jan., v. 66, no. 1
2021
Abstract: Anthropogenic landscape changes resulting in habitat degradation, loss and fragmentation might decrease connectivity and effective sizes of wild populations, threatening local biodiversity. Assumed large distributions of both species and habitats have ... ...
| Abstract | Anthropogenic landscape changes resulting in habitat degradation, loss and fragmentation might decrease connectivity and effective sizes of wild populations, threatening local biodiversity. Assumed large distributions of both species and habitats have probably discouraged studies correlating altered landscapes’ structure and composition to patterns of genetic diversity in the Neotropics. Yet, considering the increasingly high rates of deforestation and habitat conversion in Amazonia, investigating local and regional-scale effects of habitat conversion on Amazonian mammals is of paramount importance. Here, we use widespread, non-threatened, phyllostomid bats to understand how current forest dynamics are influencing genetic diversity patterns and functional connectivity of eastern Amazonian volant mammals. Four frugivorous species, Carollia perspicillata, Rhinophylla pumilio, Dermanura gnoma and Artibeus obscurus, were sampled across a heterogeneously fragmented region. Twelve more or less isolated rainforest remnants surrounded by urban areas, pastures, crops, secondary forests and other land uses comprise the studied landscapes, and are compared using a landscape genetics approach applied to mitochondrial DNA loci. Here, we report species-specific consequences of habitat fragmentation. Although the overall levels of genetic diversity were high, our data show that (i) population structure is heterogeneous across the altered landscapes; (ii) landscapes with higher habitat availability harbour populations with higher genetic diversity; and (iii) the populations assessed might be demographically declining. |
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| Keywords | Artibeus ; Carollia ; Neotropics ; biodiversity ; deforestation ; demography ; forest dynamics ; frugivores ; genetic structure ; genetic variation ; habitat destruction ; habitat fragmentation ; habitats ; landscape genetics ; landscapes ; mammals ; mitochondrial DNA ; population genetics ; population structure ; rain forests ; research ; Amazonia |
| Language | English |
| Dates of publication | 2021-01 |
| Size | p. 217-225. |
| Publishing place | Springer Berlin Heidelberg |
| Document type | Article |
| Note | NAL-light |
| ZDB-ID | 2808353-2 |
| ISSN | 2199-241X ; 2199-2401 |
| ISSN (online) | 2199-241X |
| ISSN | 2199-2401 |
| DOI | 10.1007/s13364-020-00546-3 |
| Database | NAL-Catalogue (AGRICOLA) |
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