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 language | English (US) |
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Pages (from-to) | 121-139 |
Number of pages | 19 |
Journal | Journal of Applied Aquaculture |
Volume | 31 |
Issue number | 2 |
DOIs | |
State | Published - Apr 3 2019 |
Keywords
- Fenneropenaeus indicus
- Indian white shrimp
- growth
- heritability
- selective breeding
- survival
ASJC Scopus subject areas
- Aquatic Science
- Ecology