Journal of Aquaculture Research & Development

A genomic appraisal of the stock structure of South African sardines

4^th International Conference on Fisheries & Aquaculture

November 28-30, 2016 San Antonio, USA

Tirupathi Rao Golla, Jonathan Sandoval-Castillo, Carel van der Lingen, Luciano B Beheregaray, Brent Chiazzari, Bettine Jansen Van Vuuren and Peter R Teske

University of Johannesburg, South Africa
Flinders University, Australia
Fisheries Management, Department of Agriculture, Forestry and Fisheries, Private Bag X2, Rogge Bay 8012, South Africa
University of KwaZulu-Natal, South Africa

Posters & Accepted Abstracts: J Aquac Res Development

Abstract:

The southern hemisphere sardine Sardinops sagax is common in three of South Africaâ??s temperature-defined marine provinces. Non-genetic data suggest that the species may comprise at least two regional stocks that need to be managed separately, and it is possible that environmental conditions that differ between the provinces have affected the genetic structure and driven adaptive divergence. However, genetic evidence for such spatial heterogeneity is lacking, and results from previous studies using traditional molecular methods remain inconclusive. As a result, a single-stock management strategy is presently being applied, which can potentially result in stock collapses as regional stocks become overexploited. To address this question, we have generated genome-wide data suitable to identify loci that are under diversifying selection between the provinces. The results of this study will have important applied and theoretical implications for the fisheries management of South Africaâ??s sardines.

Biography :

Email: tirupathiraobt@gmail.com