Analysis of genetic diversity of farm-raised tilapia stocks from Santa Catarina state (Brazil) using microsatellite markers

Authors

  • Rodolfo Luis PETERSEN Centro de Estudos do Mar (CEM) Universidade Federal do Paraná -  UFPR
  • Juan Esquivel GARCIA Universidade do Sul de Santa Catarina. Faculdade de Agronomia
  • Giovanni MELLO Universidade do Estado de Santa Catarina - CERES/UDESC
  • Ana Maria Rubini LIEDKE Laboratório de Macroecologia e Biogeografia Marinha. Departamento de Ecologia e Zoologia. Universidade Federal de Santa Catarina
  • Thais Cristine Marques SINCERO Laboratórios de Protozoologia e de Bioinformática. Departamento de Microbiologia, Imunologia e Parasitologia. Universidade Federal de Santa Catarina
  • Edmundo Carlos GRISARD Laboratórios de Protozoologia e de Bioinformática. Departamento de Microbiologia, Imunologia e Parasitologia. Universidade Federal de Santa Catarina

Keywords:

finfish culture, genetic improvement, molecular markers

Abstract

Three varieties of tilapia farmed at Panamá-Unisul Finfish Culture Station in Santa Catarina State were analyzed in order to evaluate the genetic diversity through microsatellites analysis. Genetic and genotypic differentiation, as well as, the degree of genetic divergence from all populations (FST) were significant (P<0.01). Using FST pairwise analysis from all populations, it was observed that the GIFT population had the highest divergence when compared to the VERMELHA (VERM) (FST = 0.11) and the PANAMÁ (PAN) (FST = 0.18). The GIFT variety (FIS = 0.16) presented the lower inbreeding coefficient when compared to the local varieties PAN (FIS = 0.33) and VERM (FIS = 0.28), showing that this variety had controlled management. The results obtained in this study evidence the importance of controlled management in farmed tilapias in order to maintain the genetic diversity of populations.

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Published

2018-11-11

Issue

Vol. 38 No. 4 (2012): BOLETIM DO INSTITUTO DE PESCA

Section

Scientific Article

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