Sexual reproduction cycle of the Sea Cucumber (Stichopus hermanni) in the coral reefs of Kish Island of Iran
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| Main Authors: | , , , , |
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| Format: | Journal Contribution biblioteca |
| Language: | Persian |
| Published: |
2007
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| Subjects: | Stichopus hermanni, Gametogenesis, Sex ratio, Organism morphology, Resting stages, Sexual reproduction, Developmental stages, Adults, Sex determination, Histology, Reproductive cycle, Coral reefs, Sex characters, Sexual maturity, Gonads, Embryos, Marine, |
| Online Access: | http://hdl.handle.net/1834/11293 |
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dig-aquadocs-1834-112932021-05-19T06:46:58Z Sexual reproduction cycle of the Sea Cucumber (Stichopus hermanni) in the coral reefs of Kish Island of Iran Tehranifard, A. Oryan, Sh. Vosoghi, Gh. Fatemy, S.M. Nikoyan, A.R. Stichopus hermanni Gametogenesis Sex ratio Organism morphology Resting stages Sexual reproduction Developmental stages Adults Sex determination Histology Reproductive cycle Coral reefs Sex characters Sexual maturity Gonads Embryos Marine No Abstract. Sea cucumber are commercially important in the world. Reproductive biology of Stichopus hermanni in the coral reefs of the Kish Island was investigated using 252 specimens. Morphology of the gonad of the sea cucumber species of the Kish Island was found to be similar to other species. We showed that the gonad colour is an unreliable character for sex determination except in maturity stage. We reported the gametogenesis sequence of events and found a sex ratio of 1:1 for the species. The sequence begins late in winter and continues until summer. The active stage of gametogenesis coincides with increasing photoperiod and temperature. Very little spawning activity out of season was noticeable and the maximum spawning was seen in summer. Average body length at first maturity was found to be 310 mm and the diameter of mature oocytes was 200 mu m. Oocytes moved upward at a rate of 20-30mm per minute that confirms divers' reports of the abundance of developing S. hermanni embryos near the water surface. Published 2018-02-15T08:25:18Z 2018-02-15T08:25:18Z 2007 Journal Contribution Refereed 1026-1354 http://hdl.handle.net/1834/11293 fa http://isfj.areo.ir/ pp.39-54 ISW Iran Kish Island |
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biblioteca |
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Europa del Oeste |
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Repositorio AQUADOCS |
| language |
Persian |
| topic |
Stichopus hermanni Gametogenesis Sex ratio Organism morphology Resting stages Sexual reproduction Developmental stages Adults Sex determination Histology Reproductive cycle Coral reefs Sex characters Sexual maturity Gonads Embryos Marine Stichopus hermanni Gametogenesis Sex ratio Organism morphology Resting stages Sexual reproduction Developmental stages Adults Sex determination Histology Reproductive cycle Coral reefs Sex characters Sexual maturity Gonads Embryos Marine |
| spellingShingle |
Stichopus hermanni Gametogenesis Sex ratio Organism morphology Resting stages Sexual reproduction Developmental stages Adults Sex determination Histology Reproductive cycle Coral reefs Sex characters Sexual maturity Gonads Embryos Marine Stichopus hermanni Gametogenesis Sex ratio Organism morphology Resting stages Sexual reproduction Developmental stages Adults Sex determination Histology Reproductive cycle Coral reefs Sex characters Sexual maturity Gonads Embryos Marine Tehranifard, A. Oryan, Sh. Vosoghi, Gh. Fatemy, S.M. Nikoyan, A.R. Sexual reproduction cycle of the Sea Cucumber (Stichopus hermanni) in the coral reefs of Kish Island of Iran |
| description |
No Abstract. |
| format |
Journal Contribution |
| topic_facet |
Stichopus hermanni Gametogenesis Sex ratio Organism morphology Resting stages Sexual reproduction Developmental stages Adults Sex determination Histology Reproductive cycle Coral reefs Sex characters Sexual maturity Gonads Embryos Marine |
| author |
Tehranifard, A. Oryan, Sh. Vosoghi, Gh. Fatemy, S.M. Nikoyan, A.R. |
| author_facet |
Tehranifard, A. Oryan, Sh. Vosoghi, Gh. Fatemy, S.M. Nikoyan, A.R. |
| author_sort |
Tehranifard, A. |
| title |
Sexual reproduction cycle of the Sea Cucumber (Stichopus hermanni) in the coral reefs of Kish Island of Iran |
| title_short |
Sexual reproduction cycle of the Sea Cucumber (Stichopus hermanni) in the coral reefs of Kish Island of Iran |
| title_full |
Sexual reproduction cycle of the Sea Cucumber (Stichopus hermanni) in the coral reefs of Kish Island of Iran |
| title_fullStr |
Sexual reproduction cycle of the Sea Cucumber (Stichopus hermanni) in the coral reefs of Kish Island of Iran |
| title_full_unstemmed |
Sexual reproduction cycle of the Sea Cucumber (Stichopus hermanni) in the coral reefs of Kish Island of Iran |
| title_sort |
sexual reproduction cycle of the sea cucumber (stichopus hermanni) in the coral reefs of kish island of iran |
| publishDate |
2007 |
| url |
http://hdl.handle.net/1834/11293 |
| work_keys_str_mv |
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