Comparative population genomics in animals uncovers the determinants of genetic diversity

Romiguier Jonathan, Gayral Philippe, Ballenghien Marion, Bernard Aurélien, Cahais Vincent, Chenuil A., Chiari Ylenia, Dernat R., Duret Laurent, Faivre Nicolas, Loire Etienne, Lourenco Joao M., Nabholz Benoit, Roux C., Tsagkogeorga G., Weber A.A.T., Weinert Lucy Anne, Belkhir Khalid, Bierne Nicolas, Glemin Sylvain, Galtier Nicolas. 2014. Comparative population genomics in animals uncovers the determinants of genetic diversity. Nature, 515 (7526) : 261-263.

Quartile : Outlier, Sujet : MULTIDISCIPLINARY SCIENCES

Liste HCERES des revues (en SHS) : oui

Thème(s) HCERES des revues (en SHS) : Economie-gestion; Psychologie-éthologie-ergonomie

Résumé : Genetic diversity is the amount of variation observed between DNA sequences from distinct individuals of a given species. This pivotal concept of population genetics has implications for species health, domestication, management and conservation. Levels of genetic diversity seem to vary greatly in natural populations and species, but the determinants of this variation, and particularly the relative influences of species biology and ecology versus population history, are still largely mysterious1, 2. Here we show that the diversity of a species is predictable, and is determined in the first place by its ecological strategy. We investigated the genome-wide diversity of 76 non-model animal species by sequencing the transcriptome of two to ten individuals in each species. The distribution of genetic diversity between species revealed no detectable influence of geographic range or invasive status but was accurately predicted by key species traits related to parental investment: long-lived or low-fecundity species with brooding ability were genetically less diverse than short-lived or highly fecund ones. Our analysis demonstrates the influence of long-term life-history strategies on species response to short-term environmental perturbations, a result with immediate implications for conservation policies.

Classification Agris : L20 - Écologie animale
L10 - Génétique et amélioration des animaux

Champ stratégique Cirad : Axe 6 (2014-2018) - Sociétés, natures et territoires

Auteurs et affiliations

• Romiguier Jonathan, UM2 (FRA)
• Gayral Philippe, CNRS (FRA)
• Ballenghien Marion, UM2 (FRA)
• Bernard Aurélien, UM2 (FRA)
• Cahais Vincent, UM2 (FRA)
• Chenuil A., IMBE (FRA)
• Chiari Ylenia, University of Alabama (USA)
• Dernat R., UM2 (FRA)
• Duret Laurent, Université Lyon 2 (FRA)
• Faivre Nicolas, UM2 (FRA)
• Loire Etienne, CNRS (FRA)
• Lourenco Joao M., UM2 (FRA)
• Nabholz Benoit, ISEM (FRA)
• Roux C., UM2 (FRA)
• Tsagkogeorga G., UM2 (FRA)
• Weber A.A.T., IMBE (FRA)
• Weinert Lucy Anne, UM2 (FRA)
• Belkhir Khalid, UM2 (FRA)
• Bierne Nicolas, CNRS (FRA)
• Glemin Sylvain, UM2 (FRA)
• Galtier Nicolas, UM2 (FRA)

Source : Cirad-Agritrop (https://agritrop.cirad.fr/577326/)

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