REPRODUCTIVE BIOLOGY OF MUGIL CAPITO (EGYPT) | ||||
| Assiut Veterinary Medical Journal | ||||
| Article 4, Volume 25.1, Issue 49, April 1991, Page 33-47 PDF (2.94 MB) | ||||
| Document Type: Research article | ||||
| DOI: 10.21608/avmj.1991.208287 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
| MAGDA I. ZAKI; MESSAEDA M. EL-GHARABAWY | ||||
| Abstract | ||||
| light on the reproduction cycle of Mugil capito which live in To throw lake Edku and Fresh water fish farm, the sexual maturity, length at first sexual maturity, gonadosomatic index and the analysis of egg diameters have been studied. the study of reproductive biology of in important item Fecundity as an a fish was also investigated. The result indicated that males and females Mugil capito first mature fish from and 25 cm. respectively for fish at length more than 20 cm farm, this corresponds to age group l', while for the fish from lake Edku, about 13 cm. & 17 cm. for reach first sexual maturity at length they male and female respectively. The seasonal gonadal cycle as indicated by gonadosomatic index and egg diameter at different states of maturity revealed that Mugil capito has a prolonged fractional breeding season extending from the ripening in October to March after that the gonads begin resorption due to unfavorable conditions such as salinity and other environmental factor. The number of egg spawned by female ranged from 45760 to 933119 egg for length group from 23 cm. to 37 cm. and for weight ranged from 110 gm. to 460 gm., while for the fish from lake Edku these figures ranged between 45568 and 316825 for length group from 17 cm. to 34 cm. and for weight ranged from 55.5 to 265.5 gm. The relationship between fecundity and the two parameters (length and weight) have been proposed. | ||||
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