Genetic parameters of survival in four generations of Indian white shrimp (Fenneropeneaus indicus)

Mohamed E. Megahed, Gamal Elmesiry, Khaled Mohamed, Arun K. Dhar

Research output: Contribution to journalArticle

1 Scopus citations

Abstract

This study evaluated the genetic variance for survival at harvest of Indian white shrimp (Fenneropenaeus indicus) using a pedigreed synthetic population generated upon collecting broodstock from different fishery grounds in Egypt. The estimated heritabilities (h2 ± SE) of survival from generations G0 to G3 ranged from 0.144 ± 0.026 to 0.008 ± 0.030 using a model that included the common environmental effect (c2). Low heritability (0.014 ± 0.015) was estimated across generations with the inclusion of common environmental effect (c2). However, the h2 of survival from G0 to G1 ranged from 0.569 ± 0.071 to 0.410 ± 0.011 when c2 was not included. The genetic correlation for survival between different ponds from G0 to G3 was moderate to high (0.79 ± 0.042 to 0.83 ± 0.012) but significantly different (P < 0.05). There were low correlation coefficients (−0.237 ± 0.089 to 0.316 ± 0.073) between body weight estimated breeding value (EBV) and survival EBV of families in four generations.

Original languageEnglish (US)
Pages (from-to)121-139
Number of pages19
JournalJournal of Applied Aquaculture
Volume31
Issue number2
DOIs
StatePublished - Apr 3 2019

Keywords

  • Fenneropenaeus indicus
  • Indian white shrimp
  • growth
  • heritability
  • selective breeding
  • survival

ASJC Scopus subject areas

  • Aquatic Science
  • Ecology

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