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| Kulmiye, A.J.; Ntiba, M.J.; Kisia, S.M.. |
| Some aspects of the reproductive biology of the thumbprint emperor, Lethrinus harak, (ForsskaI, 1775) in Kenyan coastal waters were studied from April 1995 to March 1996. Six maturity stages were described for gonad development based on external features. For females, these stages were validated by histological examination of the ovary and by taking oocyte diameter measurements. Size-related discrepancy in male to female sex ratio was observed where males generally predominated in the smaller sizes and females in the larger sizes. Lethrinus harak has a prolonged spawning season extending from October to April with peaks in October and February. The minimum size at which 50% of males and females attain first sexual maturity was estimated to be 24.2 and 26.4... |
| Tipo: Journal Contribution |
Palavras-chave: Lethrinus harak Reproduction Maturity stages ISW; Indian Ocean. |
| Ano: 2002 |
URL: http://hdl.handle.net/1834/35 |
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| Mavuti, K.M.; Kulmiye, A.J.. |
| Panulirus homarus homarus is the most widely distributed among the three P. homarus subspecies and is the second most important spiny lobster in the Kenyan lobster fishery after P. ornatus. Growth and moulting of lobsters, held in concrete tanks with a flow-through seawater supply and at ambient temperatures, were monitored for 18 months (October, 2001 - March, 2003). Both moult increment and moulting frequency were inversely correlated with size. Mean moult increment ranged from 4mm in the 36-45 mm CL size class to 0.6 mm in the 86-95 mm CL size class. Mean intermoult period increased from 49 days in the 46-55 mm CL size class to 81 days in the 86-95 mm CL size class. Growth rates were 19% and 46% higher for males and females, respectively during the... |
| Tipo: Conference Material |
Palavras-chave: Panuliris homarus homarus; Injury; Growth; Moulting; Kenya; Lobster fisheries. |
| Ano: 2004 |
URL: http://hdl.handle.net/1834/723 |
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