| Autor: |
Sovan Sahu, Gunamaya Patra, Raul W. Ponzoni, Hooi Ling Khaw, Nguyen Hong Nguyen, Kanta Das Mahapatra, Lopamudra Sahoo, P. L. Lalrinsanga, Bindu R. Pillai, S. Mohanty, Wagdy Mekkawy |
| Rok vydání: |
2014 |
| Předmět: |
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| Zdroj: |
Aquaculture Research. 46:2644-2655 |
| ISSN: |
1355-557X |
| DOI: |
10.1111/are.12419 |
| Popis: |
The present study examined the variation in sur- vival, proportion of male morphotypes, female and male proportion, female reproductive status and tag losses in nine crosses from a complete (3 9 3) dial- lel mating of three populations of Macrobrachium rosenbergii in India. The populations originated from Gujarat (north-west), Kerala (south-west) and Odisha (east), representing different agro-ecological regions in India. Progeny from 60 families (4773 juveniles) were individually tagged and reared for 16-17 weeks in earthen ponds. Binary logistic regression was used to analyse the data. Survival rate was greatest (0.88) for Kerala 9 Odisha (KO; the first letter represents the sire), whereas it was lowest (0.75) for both Kerala 9 Kerala (KK) and Gujarat 9 Kerala (GK). Significantly greater pro- portions of large male morphotypes were observed in KK cross and in combinations involving Kerala population. The highest proportion of immature females, as well as of non-berried females, was observed in the Odisha 9 Odisha (OO) cross. Tag loss was greatest for KK (0.35) and lowest for GG (0.19). We found significant variations among crosses for all studied traits suggesting the possibil- ity of including them in genetic improvement pro- grammes of this species. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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