Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/34273
Share/Export:
logo share SHARE logo core CORE BASE
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE
Title

Population genetics after fragmentation: the case of the endangered Spanish imperial eagle ( Aquila adalberti)

AuthorsMartínez-Cruz, Begoña; Godoy, José A. CSIC ORCID CVN ; Negro, Juan J. CSIC ORCID
Keywordsbottleneck
genetic variability
migration rates
population fragmentation
population structure
Spanish imperial eagle
Issue Date16-Jun-2004
PublisherBlackwell Publishing
CitationMolecular Ecology (2004) 13 , 2243–2255
AbstractThe highly endangered Spanish imperial eagle, Aquila adalberti , has suffered from both population decline and fragmentation during the last century. Here we describe the current genetic status of the population using an extensive sampling of its current distribution range and both mitochondrial control region sequences and nuclear microsatellite markers. Results were evaluated in comparison to those obtained for the Eastern imperial eagle, Aquila heliaca , its nearest extant relative. Mitochondrial haplotype diversity was lower in the Spanish than in the Eastern species whereas microsatellite allelic richness and expected heterozygosity did not differ. Both allelic richness and expected heterozygosity were lower in the small Parque Nacional de Doñana breeding nucleus compared to the remaining nuclei. A signal for a recent genetic bottleneck was not detected in the current Spanish imperial eagle population. We obtained low but significant pairwise F ST values that were congruent with a model of isolation by distance. F ST and exact tests showed differentiation among the peripheral and small Parque Nacional de Doñana population and the remaining breeding subgroups. The centrally located Montes de Toledo population did not differ from the surrounding Centro, Extremadura and Sierra Morena populations whereas the latter were significantly differentiated. On the other hand, a Bayesian approach identified two groups, Parque Nacional de Doñana and the rest of breeding nuclei. Recent migration rates into and from Parque Nacional de Doñana and the rest of breeding nuclei were detected by assignment methods and estimated as 2.4 and 5.7 individuals per generation, respectively, by a Bayesian approach. We discuss how management strategies should aim at the maintenance of current genetic variability levels and the avoidance of inbreeding depression through the connection of the different nuclei.
Publisher version (URL)http://onlinelibrary.wiley.com/doi/10.1111/j.1365-294X.2004.02220.x/pdf
URIhttp://hdl.handle.net/10261/34273
DOI10.1111/j.1365-294X.2004.02220.x
Appears in Collections:(EBD) Artículos

Show full item record
Review this work

SCOPUSTM   
Citations

92
checked on May 18, 2022

WEB OF SCIENCETM
Citations

86
checked on May 20, 2022

Page view(s)

317
checked on May 22, 2022

Download(s)

338
checked on May 22, 2022

Google ScholarTM

Check

Altmetric

Dimensions


WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.