Search

Your search keyword '"decreased population size"' showing total 2 results
Start Over Descriptor "decreased population size"
2 results on '"decreased population size"'

1. High genetic diversity despite drastic bottleneck in a critically endangered, long‐lived seabird, the Mascarene Petrel Pseudobulweria aterrima.

Author

Lopez, Jade, Nikolic, Natacha, Riethmuller, Martin, Dubos, Jérôme, Pinet, Patrick, Souharce, Patxi, Couzi, François‐Xavier, Le Corre, Matthieu, Jaeger, Audrey, and Humeau, Laurence

Subjects
PETRELS, LIGHT pollution, ENDANGERED species, MICROSATELLITE repeats, SEA birds, LIFE history theory
Abstract

The Mascarene Petrel Pseudobulweria aterrima is a critically endangered seabird endemic to Reunion Island, with an extremely small population suffering several threats. Fifteen polymorphic microsatellite loci were isolated from this species to analyse genetic diversity, estimate contemporary effective population size, search for evidence of a population bottleneck and see whether results support the hypothesis that life history traits could preserve allelic diversity in small populations. Results from 22 individuals found grounded as a consequence of light pollution highlight a surprisingly high genetic diversity, an absence of inbreeding, a contemporary effective population size estimated at approximately 1211 individuals and a probable bottleneck around 10 000 generations ago. Additional studies on genetic diversity and structure from a larger number of samples are thus required to evaluate the evolutionary potential of this critically endangered species. [ABSTRACT FROM AUTHOR]

Published
2021
Full Text
View/download PDF

2. High genetic diversity despite drastic bottleneck in a critically endangered, long‐lived seabird, the Mascarene PetrelPseudobulweria aterrima

Author

Audrey Jaeger, Natacha Nikolic, Patrick Pinet, Laurence Humeau, Jade Lopez, Patxi Souharce, Matthieu Le Corre, Martin Riethmuller, Jérôme Dubos, François-Xavier Couzi, Ecologie marine tropicale dans les Océans Pacifique et Indien (ENTROPIE [Réunion]), Centre National de la Recherche Scientifique (CNRS)-Université de La Réunion (UR)-Institut de Recherche pour le Développement (IRD), Agence de Recherche pour la Biodiversité à la Réunion (ARBRE), Société d'études ornithologiques de la Réunion (SEOR), Parc national de La Réunion, Brigade Nature Ocean Indien, Parc de la Providence, Peuplements végétaux et bioagresseurs en milieu tropical (UMR PVBMT), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut de Recherche pour le Développement (IRD)-Université de La Réunion (UR)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), This study is a production of the European project LIFE + Petrels (grant number: LIFE13 BIO/FR/000075) co-led by Le Parc national de La Reunion, l'Universite de La Reunion, La Societe d'Etudes Ornithologiques de La Reunion (SEOR) and l'Office National de la Chasse et de la Faune Sauvage, with financial support from the European Union, La Direction de l'Environnement l'Amenagement et du Logement (DEAL) and Le Conseil Departemental de la Reunion., European Project: LIFE13 BIO/FR/000075, and Institut de Recherche pour le Développement (IRD)-Université de La Réunion (UR)-Centre National de la Recherche Scientifique (CNRS)

Subjects
0106 biological sciences, Pseudobulweria aterrima, Population, 010603 evolutionary biology, 01 natural sciences, evolutionary potential, 010605 ornithology, Critically endangered, Effective population size, 14. Life underwater, decreased population size, education, Ecology, Evolution, Behavior and Systematics, Genetic diversity, education.field_of_study, biology, Ecology, [SDV.BA]Life Sciences [q-bio]/Animal biology, conservation, Small population size, microsatellite markers, biology.organism_classification, Population bottleneck, Animal Science and Zoology, human activities, Inbreeding, rare species
Abstract

International audience; The Mascarene Petrel Pseudobulweria aterrima is a critically endangered seabird endemic to Reunion Island, with an extremely small population suffering several threats. Fifteen polymorphic microsatellite loci were isolated from this species to analyse genetic diversity, estimate contemporary effective population size, search for evidence of a population bottleneck and see whether results support the hypothesis that life history traits could preserve allelic diversity in small populations. Results from 22 individuals found grounded as a consequence of light pollution highlight a surprisingly high genetic diversity, an absence of inbreeding, a contemporary effective population size estimated at approximately 1211 individuals and a probable bottleneck around 10 000 generations ago. Additional studies on genetic diversity and structure from a larger number of samples are thus required to evaluate the evolutionary potential of this critically endangered species.

Published
2020

Catalog

Books, media, physical & digital resources
See catalog results