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2 results on '"Albert Bertolero"'

1. Demographic structure and genetic diversity of Mauremys leprosa in its northern range reveal new populations and a mixed origin

Author

Palacios, C., Urrutia, C., Knapp, N., Quintana, M. F., Albert Bertolero, Simon, G., Du Preez, L., Verneau, O., Centre de Formation et de Recherche sur les Environnements Méditérranéens (CEFREM), Université de Perpignan Via Domitia (UPVD)-Centre National de la Recherche Scientifique (CNRS), Department of Animal Biology (Institute for Research on Biodiversity (IRBio)), University of Barcelona, Ecosistemes Aquàtics, IRTA, Unit for Environmental Sciences and Management, North-West University [South Aftrica] (NWU), and Savoyat, Olivier

Subjects
[SDV] Life Sciences [q-bio], demography, [SDV.GEN]Life Sciences [q-bio]/Genetics, species conservation, [SDV]Life Sciences [q-bio], Mauremys leprosa, freshwater turtles, [SDV.GEN] Life Sciences [q-bio]/Genetics, mtDNA cytochrome b, turtle trade
Abstract

International audience; Freshwater turtle species are still poorly understood, and many species are in decline due to unsustainable trade as well as human alteration and degradation of freshwater ecosystems. Mauremys leprosa is a freshwater chelonian endemic to the Mediterranean Basin. Whereas the fossil record demonstrates that this species used to be distributed to well beyond the Spanish border in France, it is today restricted to the border region with Spain, at the Baillaury River in the Pyrenees, with some isolated observations from slightly farther into France. The species consequently holds an “Endangered” status according to the French IUCN Red list. Here we report for the first time the presence and demographic structure in its northern range and demonstrate that its distribution expands beyond the Pyrenees Mountains, throughout French Catalonia. Sequence analyses of the mitochondrial DNA (mtDNA) cytochrome b (cyt b) gene from 216 specimens mainly from France and Spanish Catalonia resulted in a patchwork pattern of haplotypes that supports a mixed origin of the species in France. We encountered two extreme haplotypes, with specimens with the endemic Spanish Catalonian haplotype A18 belonging to M. leprosa leprosa and others being clearly referable to M. leprosa saharica (cyt b haplotypes from clade B) that is otherwise typical from below the Atlas Mountain Range in Morocco. Short- and long-term directions for research as well as conservation management actions are suggested for this insufficiently studied species.

Published
2015

2. When to stay, when to disperse and where to go: survival and dispersal patterns in a spatially structured seabird population

Author

Albert Bertolero, Roger Pradel, Giacomo Tavecchia, Julia Piccardo, Jordi Muntaner, Manuela G. Forero, Meritxell Genovart, Daniel Oro, Albert Fernández-Chacón, Isabel Afán, Joint Research Unit for Biodiversity (UO, CSIC, PA), Universidad de Oviedo, Population Ecology Group, Institut Mediterrani d'Estudis Avancats (IMEDEA), Consejo Superior de Investigaciones Científicas [Spain] (CSIC)-Universidad de las Islas Baleares (UIB)-Consejo Superior de Investigaciones Científicas [Spain] (CSIC)-Universidad de las Islas Baleares (UIB), Centre d’Ecologie Fonctionnelle et Evolutive (CEFE), Institut de Recherche pour le Développement (IRD [France-Sud])-Centre National de la Recherche Scientifique (CNRS)-École pratique des hautes études (EPHE)-Université de Montpellier (UM)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro)-Institut National de la Recherche Agronomique (INRA)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Université Paul-Valéry - Montpellier 3 (UM3), Institut Mediterrani d'Estudis Avançats, Ecosistemes Aquàtics, IRTA, Estacion Biologica de Doñana (CSIC), Laboratorio de SIG y Teledeteccion (LAST-EBD), Estación Biológica de Doñana CSIC (SPAIN), Institut Mediterrani d'Estudis Avançats (CSIC-UIB), Institut Mediterrani d'estudis Avançats, Mallorca, Spain, Consejo Superior de Investigaciones Científicas [Madrid] (CSIC)-Universidad de las Islas Baleares (UIB)-Consejo Superior de Investigaciones Científicas [Madrid] (CSIC)-Universidad de las Islas Baleares (UIB), Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-École pratique des hautes études (EPHE), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Institut National de la Recherche Agronomique (INRA)-Université Paul-Valéry - Montpellier 3 (UPVM)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut de Recherche pour le Développement (IRD [France-Sud]), Estación Biológica de Doñana (EBD), Consejo Superior de Investigaciones Científicas [Madrid] (CSIC), Consejo Superior de Investigaciones Científicas [Madrid] (CSIC)-Consejo Superior de Investigaciones Científicas [Madrid] (CSIC), and Université Paul-Valéry - Montpellier 3 (UM3)-Institut National de la Recherche Agronomique (INRA)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-École pratique des hautes études (EPHE)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD [France-Sud])-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro)

Subjects
0106 biological sciences, education.field_of_study, biology, Ecology, 010604 marine biology & hydrobiology, Population size, Population, Foraging, Metapopulation, World population, 15. Life on land, 010603 evolutionary biology, 01 natural sciences, Habitat, biology.animal, Biological dispersal, 14. Life underwater, Seabird, [SDE.BE]Environmental Sciences/Biodiversity and Ecology, education, Ecology, Evolution, Behavior and Systematics, CNRS1
Abstract

Dispersal is a key process for the population dynamics of spatially structured populations (at local and metapopulation levels), so the understanding of the mechanisms underlying the movement of individuals in space and time is important for evolutionary and ecological studies. Here we analyzed, for the first time, a long-term (1992–2009) multi-site capture– recapture database collected at four local populations of a long-lived seabird, the Audouin’s gull Larus audouinii, covering 90% of its total world population. Those local populations show different ecological and demographic features that allow us to assess the influence of several key factors involved in breeding dispersal patterns at large spatio-temporal scales. A recently developed analytical tool in mark–recapture modelling, the multi-event approach, allowed us to obtain separate departure and settlement probabilities and test different biological hypotheses for each step of the dispersal process. Our results revealed that site fidelity was the most common strategy among breeders, and dispersal was only high from the site with the lowest population size and habitat quality. However, departures from the two largest local populations increased over the study period in response to severe ecological perturbations. Dispersers chose different settlement patches depending on their site of origin, with settlement choices determined by the population size of the destination colony rather than by the local reproductive performance, foraging area (a proxy of food availability) or distance to the destination site. Our results indicate that a breeding site is not abandoned by breeders unless a series of cumulative perturbations occur; once dispersing, settlement is directed towards densely populated sites, with dispersers using population size to rapidly assess the quality of the breeding patch.

Published
2013

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