Genetic diversity and population structure of the blue jack mackerel Trachurus picturatus across its western distribution

• Type: Article in International Scientific Journal
• Date: 2019

Authors

Moreira, C (Author) Other; Correia, AT (Author) Other; vaz-pires, p (Author) ICBAS; Froufe, E (Author) Other

Journal

Title: Journal of Fish Biology

Vol. 94

Pages: 725-731

ISSN: 0022-1112

Publisher: Wiley-Blackwell

Indexing

ISI Web of Knowledge - 0 Citations

Scopus - 10 Citations

Other information

Authenticus ID: P-00Q-FDV

DOI: 10.1111/jfb.13944

Abstract (EN): Blue jack mackerel Trachurus picturatus collected at six sampling locations of the north-east Atlantic Ocean (Azores, Madeira, Canaries, and Matosinhos, Peniche and Portimao, mainland Portugal) and one location in the Mediterranean (Sicily), were used to examine the genetic structure of this species. Three mitochondrial gene regions (cytochrome c oxidase subunit I, cytochrome b and control region) were used to study the genetic structure of the species in Macaronesia, as well as to compare the genetic diversity of this region with published results from its eastern distribution. All markers indicated the absence of genetic structure among populations, with high indices of genetic diversity. These results suggest that the species went through a bottleneck event, followed by a recent population expansion. Moreover, the comparison with previously published results from the T. picturatus Mediterranean distribution suggests the existence of a single panmictic population throughout the species' full range. This was, however, an unexpected result since other methodologies have shown the presence of, at least, three different population-units in the NE Atlantic Ocean.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 7