Investigation on spawning season, fecundity rate and length at maturity Lm_(50) of common kilka, Clupeonella cultriventris, in Mazandaran Province coastal waters
The spawning season, fecundity rate, male to female ratio and Lm _ (50) of the Caspian Sea common kilka (Clupeonella cultriventris) were investigated during March 2005 to February 2006 in the coastal waters of Mazandaran province. The mean fork length and the weight of ovary females were 99.47 ±9.8mm and 8.3 ±2.0g respectively. The sex ratio was 2:1 in which females were dominant. The common kilka spawning started from January and its peak occurred in May. The mean gonadosomatic index was 2.1 ±6.0mm and its maximum was estimated at 0.28 and 8.9 respectively with its highest recorded in May. The condition factor was calculated at 1.5 ±0.12. More than 50 percent of the fish specimens matured when their length exceeded 94.17mm.
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| Main Authors: | , , |
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| Format: | article biblioteca |
| Language: | Persian |
| Published: |
2008
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| Subjects: | Biology, Spawning seasons, Gonadosomatic index, Weight, Sex ratio, Length, Condition factor, Clupeonella cultriventris, Brackish, Caspian Sea, Iran, |
| Online Access: | http://hdl.handle.net/1834/38440 |
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