Data/hora: 09/06/2024 17:08:59

Provedor de dados: | 5
País: | France

Título:

Structure et diversité génétique des populations de raie bouclée en Méditerranée

Structure and genetic diversity of thornback ray populations in the Mediterranean sea

Autores: | Lecuyer, Romain.
Data: | 2020-09-17
Ano: | 2020
Palavras-chave: | Méditerranée; Structure de populations; Différenciation; Diversité génétique; SNP; Raja clavata; Mediterranean sea; Population structure; Differenciation; Genetic diversity; SNP; Raja clavata.
Resumo: | Chondrichtyes are threatened by several disturbances among which is the significant development of fisheries during the 20th century. The Mediterranean sea has long been fished and keeps being intensely so by several nations that seek cost-effectiveness or food security above all. Such a background does not ease data recording and sharing for research purposes. This study mainly aims at assessing the population structure and status of thornback ray so as to avoid its deterioration due to bottom-trawl fisheries pressure, hardly reversible even with a sudden sound management. To do so, an extensive panel of nuclear genetic markers has been developed to analyze underlying structure along with differenciation and genetic diversity of Mediterranean populations. A four-population genetic structure has been identified with potential panmixia within the occidental Mediterranea basin. Individuals sampled in the Egean sea were the most differenciated from the rest in which the Adriatic and Ionian seas and the occidental basin contain two moderately differenciated groups, the latter containing insignificant genetic differences. Estimated indices show a gradual depletion of genetic diversity eastward whereas effective population size estimators point towards a longer sustainability of the genetic diversity in the Egean sea relatively to other western populations.
Tipo: | Text
Idioma: | Francês

Identificador:

https://archimer.ifremer.fr/doc/00667/77899/80091.pdf

https://archimer.ifremer.fr/doc/00667/77899/

Formato: | application/pdf

Fonte:

info:eu-repo/semantics/openAccess

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