alexa Genetic Evidence for Sympatric Populations of Yellow Perch (Perca flavescens) in Lake Saint-Pierre (Canada): the Crucial First Step in Developing a Fishery Management Plan
ISSN: 2155-9546

Journal of Aquaculture Research & Development
Open Access

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Research Article

Genetic Evidence for Sympatric Populations of Yellow Perch (Perca flavescens) in Lake Saint-Pierre (Canada): the Crucial First Step in Developing a Fishery Management Plan

Christelle Leung1,2, Pierre Magnan1,3 and Bernard Angers1,2*

1Group for Interuniversity Research in Limnology and Aquatic Environment (GRIL)

2Department of biological sciences, Université de Montréal, C.P. 6128, Succursale Centre-Ville, Montreal, Quebec, Canada H3C 3J7

3Department of Chemistry-Biology, Université du Québec à Trois-Rivières, 3351 Boulevard des Forges, C.P. 500, Trois-Rivières, QC, Canada

*Corresponding Author:
Bernard Angers
Department of Biological Sciences
Université de Montréal. C.P. 6128
Succursale Centre-Ville, Montreal
Quebec, Canada H3C 3J7
Tel: 1-514-343-2286
Fax: 1-514-343-2293
E-mail: bernard. [email protected]

Received Date: October 15, 2011; Accepted Date: December 05, 2011; Published Date: December 14, 2011

Citation: Leung C, Magnan P, Angers B (2011) Genetic Evidence for Sympatric Populations of Yellow Perch (Perca flavescens) in Lake Saint-Pierre (Canada): the Crucial First Step in Developing a Fishery Management Plan. J Aquac Res Development S6:001. doi:10.4172/2155-9546.S6-001

Copyright: © 2011 Leung C, This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

 

Abstract

To ensure the persistence of species facing anthropogenic pressures, an understanding of the dynamics and mechanisms that structure populations is of major importance. Determining the presence of distinct populations is a first step when sympatric populations are suspected. Yellow perch ( Perca flavescens ) is exploited by sport and commercial fishing in Lake Saint-Pierre (Quebec, Canada). Because habitat characteristics are spatially structured and this species is known to display natal site fidelity, this study’s aim was to assess whether sympatric populations of yellow perch coexist in Lake Saint-Pierre. Low genetic differentiation is predicted due to the recent colonization of the system (<8,000 years). Simulations were first performed to confirm that population differentiation is better depicted using AFLP than microsatellite markers. A survey of the variation throughout the entire genome was then performed using the AFLP approach. To link individuals to their natal site, recently emerged larvae from different cohorts captured at different stations were analyzed. Results from three distinct AFLP surveys indicated a correlation between the genetic composition of individuals and geographic sites. These results confirmed the presence of multiple sympatric populations in Lake Saint-Pierre, resulting from natal site fidelity. While the genetic differentiation is very low, the management of this species should take into account the existence of distinct population structures.

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