Population dynamics of killifish Aphanius dispar (Ruppel) in Sandspit area off Karachi
Growth and mortality parameters of Aphanius dispar a cyprinoides generally observed in the catches of near shore area were estimated from the length frequency data collected from Sandspit area of Karachi, using LFSA. The von Bertalanffy growth parameters were estimated as Loo=71.73 mm & K=L35/yr for Male Aphanius dispar and Loo=70.66 & K=l.41 for female. Total Mortality coefficient (Z) was estimated using Length converted catch curve which is equal to 2.12/yr, for male and for female 2.19/yr. Natural mortality (M) was estimated by Pauly's empirical formula: M=l.64/yr (male) and 1.70/yr (female). The species also displayed two cohorts a year.
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| Main Authors: | , , |
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| Format: | article biblioteca |
| Language: | English |
| Published: |
1996
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| Subjects: | Fisheries, Population dynamics, Aphanius dispar, Karachi, |
| Online Access: | http://hdl.handle.net/1834/33266 |
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