Data/hora: 09/06/2024 11:52:19

Provedor de dados: | 20
País: | Belgium
Título: | Multigear fishery of Nile perch (Lates niloticus) in the Winam Gulf of Lake Victoria: with special reference to mortality, selection and catch/effort data
Autores: | Manyala, J.O.; Rabuor, C.O.
Data: | 2006-03-16
Ano: | 1994
Palavras-chave: | Lates niloticus; Catch/effort; Exploitation; Gillnets; Lake fisheries; Gillnets; Lake fisheries; Http://aims.fao.org/aos/agrovoc/c_32431; Http://aims.fao.org/aos/agrovoc/c_4159.
Resumo: | A survey of multigear fishery of Nile perch (Lates niloticus) in the     Winam Gulf of Lake Victoria indicates that total mortality coefficient     (Z) determined from longline fishery using hook number 6 was double     that of hook number 7. Total mortality coefficient determined from     gillnets and beachseines were lower than those of hooks. The catch per     unit effort (C/f) measured using different criteria indicated an     increase for all gears in 1990 as compared to 1989 except for     gillnets. A two-fold increase in unit effort (f) increased the C/f for     mosquito seines by only 30%. The typical exponential decay of C/f with     increasing f of exploited stock in equilibrium was lacking in the case     of Nile perch in the Winam Gulf.
Tipo: | Proceedings Paper
Idioma: | Inglês

Identificador:

Okemwa, E.; Wakwabi, E.O.; Getabu, A. (Ed.) Proceedings of the Second EEC Regional Seminar on Recent Trends of Research on Lake Victoria Fisheries, NAIROBI  : ICIPE SCIENCE, p. 67-72

9290640789

http://hdl.handle.net/1834/1174

Editor: | ICIPE SCIENCE

Formato:

246356 bytes

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