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Data from: The effect of habitat fragmentation on the genetic structure of a top predator: loss of diversity and high differentiation among remnant populations of Atlantic Forest jaguars (Panthera onca)

When using this data, please cite the original article:

Haag T, Santos AS, Sana DA, Morato RG, Cullen Jr L, Crawshaw Jr PG, De Angelo C, Di Bitetti MS, Salzano FM, Eizirik E (2010) The effect of habitat fragmentation on the genetic structure of a top predator: loss of diversity and high differentiation among remnant populations of Atlantic Forest jaguars (Panthera onca). Molecular Ecology 19(22): 4906-4921. doi:10.1111/j.1365-294X.2010.04856.x

Additionally, please cite the Dryad data package:

Haag T, Santos A, Sana D, Morato R, Cullen Jr L, Crawshaw Jr P, De Angelo C, Di Bitetti M, Salzano F, Eizirik E (2010) Data from: The effect of habitat fragmentation on the genetic structure of a top predator: loss of diversity and high differentiation among remnant populations of Atlantic Forest jaguars (Panthera onca). Dryad Digital Repository. doi:10.5061/dryad.1884
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Dryad Package Identifier doi:10.5061/dryad.1884    362 views  
Abstract Habitat fragmentation may disrupt original patterns of gene flow and lead to drift-induced differentiation among local population units. Top predators such as the jaguar may be particularly susceptible to this effect, given their low population densities, leading to small effective sizes in local fragments. On the other hand, the jaguar's high dispersal capabilities and relatively long generation time might counteract this process, slowing the effect of drift on local populations over the time frame of decades or centuries. In this study, we have addressed this issue by investigating the genetic structure of jaguars in a recently fragmented Atlantic Forest region, aiming to test whether loss of diversity and differentiation among local populations are detectable, and whether they can be attributed to the recent effect of drift. We used 13 microsatellite loci to characterize the genetic diversity present in four remnant populations, and observed marked differentiation among them, with evidence of recent allelic loss in local areas. Although some migrant and admixed individuals were identified, our results indicate that recent large-scale habitat removal and fragmentation among these areas has been sufficiently strong to promote differentiation induced by drift and loss of alleles at each site. Low estimated effective sizes supported the inference that genetic drift could have caused this effect within a short time frame. These results indicate that jaguars' ability to effectively disperse across the human-dominated landscapes that separate the fragments is currently very limited, and that each fragment contains a small, isolated population that is already suffering from the effects of genetic drift.
Keywords Conservation Genetics, Habitat Degradation, Mammals, Population Genetics - Empirical, Wildlife Management,
Date Deposited 2010-08-20T19:14:51Z
Scientific Names Panthera onca
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Microsatellite data of the Atlantic Forest jaguar populations    97 views   43 downloads View File Details
Microsatellite data of the four jaguar populations studied in Atlantic Forest.
Download: MicrosatelliteData.xls ( 29.18Kb )
To the extent possible under law, the authors have waived all copyright and related or neighboring rights to this data.  


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