Show simple item record

dc.contributor.authorNjiru, M.
dc.contributor.authorOjuok, J.E.
dc.date.accessioned2018-02-22T09:11:48Z
dc.date.available2018-02-22T09:11:48Z
dc.date.issued1996
dc.identifier.urihttp://hdl.handle.net/11671/1936
dc.description.abstractLength-frequency data collected from fish landings on Lake Naivasha were used to estimate the growth parameters: total mortality (Z), growth performance index (¢'), exploitation rate and recruitment pattern in Oreochromis leucostictus. The asymptotic length (Lee) was 38 em and K 0.48 yr -I. Z was estimated as 3.5 yr -I, M was 0.19 yr -I, F was 2.6 yr .1 and E of 0.74. Recruitment occurs throughout the year, with a peak in January to March, while entry into the fishery occurs at a mean length of 15.9 cm. Existing restriction on the maximum number of gill nets allowed per fishing licence (10 per boat) and a minimum mesh size (10 cm) inthe lake are not adhered to. Poaching using illegal mesh size nets as small as 5 em and use of more than 10 nets per boat are common in the lake.en_US
dc.language.isoenen_US
dc.publisherLVFOen_US
dc.relation.ispartofseriesVolume;7
dc.subjectFisheriesen_US
dc.subjectFishingen_US
dc.subjectFish Speciesen_US
dc.titlePopulation parameters of Oreochromis leucostictus from Lake Naivasha, Kenyaen_US
dc.typeArticleen_US


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record