Long-term isolation at a low effective population size greatly reduced genetic diversity in Gulf of California fin whales

Autor:	Vania E. Rivera-León, Tom Oosting, Robert L. Brownell, Wensi Hao, Jorge Urbán, Per J. Palsbøll, Martine Bérubé, Sally A. Mizroch
Přispěvatelé:	Palsbøll lab, Neurobiology
Jazyk:	angličtina
Rok vydání:	2019
Předmět:	Male 0301 basic medicine Population genetics PER-GENERATION RULE lcsh:Medicine Linkage Disequilibrium 0302 clinical medicine Gene Frequency Effective population size lcsh:Science MONODON-MONOCEROS mtDNA control region MIGRATION RATES education.field_of_study Multidisciplinary Fin Whale biology Conservation biology MEDITERRANEAN SEA DNA CONTROL REGION Microsatellite Genotype CANAL-DE-BALLENAS BALAENOPTERA-PHYSALUS Population DNA Mitochondrial Article 03 medical and health sciences Genetic drift biology.animal Animals Sex Ratio education Alleles Population Density Genetic diversity Balaenoptera Whale lcsh:R Genetic Variation biology.organism_classification NORTH-ATLANTIC Fishery Genetics Population 030104 developmental biology Haplotypes MICROSATELLITE LOCI lcsh:Q MITOCHONDRIAL CONTROL REGION 030217 neurology & neurosurgery Microsatellite Repeats
Zdroj:	Scientific Reports, Vol 9, Iss 1, Pp 1-12 (2019) Scientific Reports, 9(1):12391. Nature Publishing Group Scientific Reports
ISSN:	2045-2322
DOI:	10.1038/s41598-019-48700-5
Popis:	The Gulf of California, Mexico is home to many cetacean species, including a presumed resident population of fin whales, Balaenoptera physalus. Past studies reported very low levels of genetic diversity among Gulf of California fin whales and a significant level of genetic differentiation from con-specifics in the eastern North Pacific. The aim of the present study was to assess the degree and timing of the isolation of Gulf of California fin whales in a population genetic analysis of 18 nuclear microsatellite genotypes from 402 samples and 565 mitochondrial control region DNA sequences (including mitochondrial sequences retrieved from NCBI). The analyses revealed that the Gulf of California fin whale population was founded ~2.3 thousand years ago and has since remained at a low effective population size (~360) and isolated from the eastern North Pacific (Nem between 0.89–1.4). The low effective population size and high degree of isolation implied that Gulf of California fin whales are vulnerable to the negative effects of genetic drift, human-caused mortality and habitat change.
Databáze:	OpenAIRE
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