| Título: | MATURATION AND SPAWNING OF THE HORSE-MACKEREL, CARANX KALLA (CUV. AND VAL.) |
| Autores: | Kagwade, V N; Central Marine Fisheries Research Institute, Mandapam Camp |
| Fecha: | 2011-12-07 |
| Publicador: | Central Marine Fisheries Research Institute (on behalf of Indian Council of Agricultural |
| Fuente: |
Ver documento |
| Tipo: | Peer-reviewed Article |
| Tema: | No aplica |
| Descripción: | The maturity studies of C. kalla were carried out on the material collected from the boatseine and gill net catches from the inshore waters off Calicut from January 1958 to December1960. The growth of ova from stage I to II was found to be less than from stagesII to III and the extent of growth from stages II to III and from III to IV was noted tobe almost the same. Growth was maximum between the stages IV and V and minimumbetween V and VI. About 50% of the females were found to mature first at aboutthe size of 124 mm total length. An individual fish was noted to have one shortspawning period but ihe species was found to spawn all round the year with two peaks,the major one during December-January and the minor one during May-June.Females appeared in greater proportions in smaller size groups and the males weredominant in higher siz; groups. The sex ratio in the catch varied widely in the differentmonths. However, it was nearly 50:50 during the months June, August and October ofsome years.The fecundity was. found to increase with the length of the fish and the number ofova ranged approximately from 30,000 to 75,000 for the fish lengths 115 mm to 138 mm.The 'condition factor' was noted to reach the minimum value at a length of 122 mm forthe females and 117 mm for the males when they are considered to mature for the firsttime. |
| Idioma: | Inglés |
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