Size-distribution and length-weight relationship of a deep-water population of Holothuria scabra (Jaeger, 1833) in Zanzibar, Tanzania

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dc.creatorYussuf, Yussuf S.
dc.creatorYahya, Saleh A.
dc.date2021-05-20T08:07:24Z
dc.date2021-05-20T08:07:24Z
dc.date2020
dc.date.accessioned2022-10-20T13:09:28Z
dc.date.available2022-10-20T13:09:28Z
dc.descriptionAbstract. Full text article available at https://doi.org/10.4314/wiojms.v19i1.9
dc.descriptionA study was carried out on the size distribution, length-weight relationship and condition factor of a deep-water population of the commercially important tropical sea cucumber Holothuria scabra in Zanzibar, Tanzania. Samples were collected from fishers and supplementary information gathered. The deep water (15-20 m) population of H. scabra is dominated by large sized individuals that have already attained maturity. There was no significant difference in size between male and female individuals (p>0.05). The sex ratio in this population significantly differed from 1:1 in favour of male individuals (p=0.01). The results showed significant correlation between length and weight for male, female, indeterminate individuals, and pooled data, with r values of 0.681, 0.794, 0.821 and 0.680, respectively. Moreover, the b-value for male, female, indeterminate individuals and pooled data was 1.288, 1.439, 1.686 and 1.407 respectively, which revealed that individuals of deep-water H. scabra exhibit negative allometric growth. The mean condition factor (K) value when all data were pooled together was 4.213±0.106 indicating that individuals were in good condition and came from a healthy environment. This study fills a key information gap that is relevant to the management of the H. scabra fishery in the country.
dc.identifierYussuf, Y. S., & Yahya, S. A. (2020). Size-distribution and length-weight relationship of a deep-water population of Holothuria scabra (Jaeger, 1833) in Zanzibar, Tanzania. Western Indian Ocean Journal of Marine Science, 19(1), 113-121.
dc.identifierDOI: https://doi.org/10.4314/wiojms.v19i1.9
dc.identifierhttp://hdl.handle.net/20.500.12661/3154
dc.identifier.urihttp://hdl.handle.net/20.500.12661/3154
dc.languageen
dc.publisherWestern Indian Ocean Marine Science Association
dc.subjectHolothuria scabra
dc.subjectSize distribution
dc.subjectLength-weight relationship
dc.subjectCondition factor
dc.subjectAllometric growth
dc.subjectZanzibar
dc.subjectTropical sea
dc.subjectSea cucumber
dc.subjectHolothuria scabra
dc.titleSize-distribution and length-weight relationship of a deep-water population of Holothuria scabra (Jaeger, 1833) in Zanzibar, Tanzania
dc.typeArticle

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