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Assessing the geographic scale of genetic population management with microsatellites and introns in the clam Ruditapes decussatus.

Arias-Pérez A, Cordero D, Borrell Y, Sánchez JA, Blanco G, Freire R, Insua A, Saavedra C - Ecol Evol (2016)

Bottom Line: Microsatellites confirmed the Atlantic and West Mediterranean races detected with introns and showed that genetic variability was higher in Mediterranean than in Atlantic populations.Both marker types showed that genetic differentiation of Atlantic populations was low and indicated that populations could be managed at the regional level in the case of Cantabrian and Gulf of Cadiz areas, but not in the case of Rias Baixas and the Mediterranean.This study shows the interest of including different types of markers in studies of genetic population structure of marine organisms.

View Article: PubMed Central - PubMed

Affiliation: Departamento de Bioloxía Celular e Molecular Universidade da Coruña A Zapateira s/n 15071 A Coruña Spain.

ABSTRACT
The clam Ruditapes decussatus is commercially important in southwestern Europe, suffering from population decline and hybridization with exotic Manila clam (R. philippinarum). Previous studies with intronic markers showed a genetic subdivision of the species in three races (Atlantic, West Mediterranean, and Adriatic-Aegean). However, detailed population genetic studies to help management of the main production areas in the southwest of Europe are missing. We have analyzed eight Atlantic and two Mediterranean populations from the Spanish coasts using 14 microsatellites and six intronic markers. Microsatellites confirmed the Atlantic and West Mediterranean races detected with introns and showed that genetic variability was higher in Mediterranean than in Atlantic populations. Both marker types showed that genetic differentiation of Atlantic populations was low and indicated that populations could be managed at the regional level in the case of Cantabrian and Gulf of Cadiz areas, but not in the case of Rias Baixas and the Mediterranean. This study shows the interest of including different types of markers in studies of genetic population structure of marine organisms.

No MeSH data available.


Related in: MedlinePlus

Neighbor‐joining tree based on genetic distances between samples. (A) Nei distances, computed from intronic data. (B) Reynolds's distances, calculated from microsatellite data. Numbers near nodes are bootstrap confidence values.
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ece32052-fig-0002: Neighbor‐joining tree based on genetic distances between samples. (A) Nei distances, computed from intronic data. (B) Reynolds's distances, calculated from microsatellite data. Numbers near nodes are bootstrap confidence values.

Mentions: The neighbor‐joining tree based on Nei genetic distances (Fig. 2A) showed a polytomy with three divergent branches. These branches separated, respectively, the only Mediterranean population scored for intron variability (Del), the two populations from Rías Baixas, and the group formed by the populations from the Cantabrian coasts and the Gulf of Cadiz.


Assessing the geographic scale of genetic population management with microsatellites and introns in the clam Ruditapes decussatus.

Arias-Pérez A, Cordero D, Borrell Y, Sánchez JA, Blanco G, Freire R, Insua A, Saavedra C - Ecol Evol (2016)

Neighbor‐joining tree based on genetic distances between samples. (A) Nei distances, computed from intronic data. (B) Reynolds's distances, calculated from microsatellite data. Numbers near nodes are bootstrap confidence values.
© Copyright Policy - creativeCommonsBy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4835341&req=5

ece32052-fig-0002: Neighbor‐joining tree based on genetic distances between samples. (A) Nei distances, computed from intronic data. (B) Reynolds's distances, calculated from microsatellite data. Numbers near nodes are bootstrap confidence values.
Mentions: The neighbor‐joining tree based on Nei genetic distances (Fig. 2A) showed a polytomy with three divergent branches. These branches separated, respectively, the only Mediterranean population scored for intron variability (Del), the two populations from Rías Baixas, and the group formed by the populations from the Cantabrian coasts and the Gulf of Cadiz.

Bottom Line: Microsatellites confirmed the Atlantic and West Mediterranean races detected with introns and showed that genetic variability was higher in Mediterranean than in Atlantic populations.Both marker types showed that genetic differentiation of Atlantic populations was low and indicated that populations could be managed at the regional level in the case of Cantabrian and Gulf of Cadiz areas, but not in the case of Rias Baixas and the Mediterranean.This study shows the interest of including different types of markers in studies of genetic population structure of marine organisms.

View Article: PubMed Central - PubMed

Affiliation: Departamento de Bioloxía Celular e Molecular Universidade da Coruña A Zapateira s/n 15071 A Coruña Spain.

ABSTRACT
The clam Ruditapes decussatus is commercially important in southwestern Europe, suffering from population decline and hybridization with exotic Manila clam (R. philippinarum). Previous studies with intronic markers showed a genetic subdivision of the species in three races (Atlantic, West Mediterranean, and Adriatic-Aegean). However, detailed population genetic studies to help management of the main production areas in the southwest of Europe are missing. We have analyzed eight Atlantic and two Mediterranean populations from the Spanish coasts using 14 microsatellites and six intronic markers. Microsatellites confirmed the Atlantic and West Mediterranean races detected with introns and showed that genetic variability was higher in Mediterranean than in Atlantic populations. Both marker types showed that genetic differentiation of Atlantic populations was low and indicated that populations could be managed at the regional level in the case of Cantabrian and Gulf of Cadiz areas, but not in the case of Rias Baixas and the Mediterranean. This study shows the interest of including different types of markers in studies of genetic population structure of marine organisms.

No MeSH data available.


Related in: MedlinePlus