Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.7/744
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dc.contributor.authorSalmona, Jordi-
dc.contributor.authorSalamolard, Marc-
dc.contributor.authorFouillot, Damien-
dc.contributor.authorGhestemme, Thomas-
dc.contributor.authorLarose, Jerry-
dc.contributor.authorCenton, Jean-François-
dc.contributor.authorSousa, Vitor-
dc.contributor.authorDawson, Deborah A.-
dc.contributor.authorThebaud, Christophe-
dc.contributor.authorChikhi, Lounès-
dc.identifier.citationSalmona J, Salamolard M, Fouillot D, Ghestemme T, Larose J, et al. (2012) Signature of a Pre-Human Population Decline in the Critically Endangered Reunion Island Endemic Forest Bird Coracina newtoni . PLoS ONE 7(8): e43524. doi:10.1371/journal.pone.0043524pt_PT
dc.description.abstractThe exceptional biodiversity of Reunion Island is threatened by anthropogenic landscape changes that took place during the 350 years of human colonization. During this period the human population size increased dramatically from 250 to 800,000. The arrival of humans together with the development of agriculture, invasive species such as rats and cats, and deforestation has lead to the extinction of more than half of the original vertebrate species of the island. For the remaining species, significant work is being carried out to identify threats and conservation status, but little genetic work has been carried on some of the most endangered species. In the last decade theoretical studies have shown the ability of neutral genetic markers to infer the demographic history of endangered species and identify and date past population size changes (expansions or bottlenecks). In this study we provide the first genetic data on the critically endangered species the Reunion cuckoo-shrike Coracina newtoni. The Reunion cuckoo-shrike is a rare endemic forest bird surviving in a restricted 12-km(2) area of forested uplands and mountains. The total known population consists of less than one hundred individuals out of which 45 were genotyped using seventeen polymorphic microsatellite loci. We found a limited level of genetic variability and weak population structure, probably due to the limited geographic distribution. Using Bayesian methods, we identified a strong decline in population size during the Holocene, most likely caused by an ancient climatic or volcanic event around 5000 years ago. This result was surprising as it appeared in apparent contradiction with the accepted theory of recent population collapse due to deforestation and predator introduction. These results suggest that new methods allowing for more complex demographic models are necessary to reconstruct the demographic history of populations.pt_PT
dc.description.sponsorshipFrench ‘‘Ministère de l’Ecologie et du Developpement Durable’’ research program: (SEOR); European Fund for Regional Development (FEDER); Institut Français de la Biodiversité programme "Biodiversité de l’Océan Indien" grant: (ref. CD-AOOI-07-003); Groupement de Recherche International (GDRI) Madagascar; “Laboratoire d’Excellence (LABEX) TULIP grant: (ANR -10-LABX-41); HERMES; Fundação para a Ciência e a Tecnologia grant: (H200741/re-equip/2005).pt_PT
dc.publisherPublic Library of Sciencept_PT
dc.subjectBayes Theorempt_PT
dc.subjectEndangered Speciespt_PT
dc.titleSignature of a Pre-Human Population Decline in the Critically Endangered Reunion Island Endemic Forest Bird Coracina newtonipt_PT
degois.publication.titlePLoS ONEpt_PT
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