ESTIMATIVA DE PARÂMETROS GENÉTICOS PARA CRESCIMENTO E SOBREVIVíÅ NCIA EM OSTRAS DO PACÍFICO (Crassostrea gigas)
| Autor: | Renata Bezerra Gomes, Marcos Caivano Pedroso de Albuquerque, Cláudio Melo, Simone Sühnel, Patrick Rafael Dybas, Francisco Carlos da Silva |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
0301 basic medicine
biology 04 agricultural and veterinary sciences Aquatic Science Pacific oyster Heritability biology.organism_classification 03 medical and health sciences 030104 developmental biology Animal science 040102 fisheries 0401 agriculture forestry and fisheries Variance components Juvenile Crassostrea Animal Science and Zoology |
| Zdroj: | Boletim do Instituto de Pesca. 44:251-266 |
| ISSN: | 1678-2305 0046-9939 |
| DOI: | 10.20950/1678-2305.2018.337 |
| Popis: | The rapid growth associated with high tolerance to adverse environmental conditions has made the Pacific oyster, Crassostrea gigas, the species chosen for cultivation in Santa Catarina, Brazil. Variance components and genetic parameters for survival and growth of Pacific oyster families were estimated using data from half-sibs (n = 41) and full-sibs (n = 2) families. In the juvenile stage and at harvest, we measured total weight and shell height of 80 animals per family. In addition, at harvest we measured yield (total weight of animals per floor of lantern) and calculated survival. The covariance components were estimated in the program AIREMLF90 using an animal model.The heritabilities (Standard Deviation) at harvest were: 0.26 (0.05) (individual weight (SD)), 0.34 (0.05) (height), 0.54 (0.09) (yield), 0.58 (0.08) (average individual weight) and 0.16 (0.07) (survival). Genetic correlations were 0.88 (0.03) (between individual weight and height), 0.98 (0.03) (between yield and average individual weight), 0.58 (0.39) (between average individual weight and survival) and 0.47 (0.36) (between yield and survival). The heritability and genetic correlations suggest that gains could be obtained for the studied traits. The yield and mean individual weight should be used as a criterion for selection. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|