A maximum-likelihood method for estimating natural mortality and catchability coefficient from catch-and-effort data
Wang, Y-G. (1999) A maximum-likelihood method for estimating natural mortality and catchability coefficient from catch-and-effort data. Marine and Freshwater Research, 50(4), pp. 307-311.
A simple stochastic model of a fish population subject to natural and fishing mortalities is described. The fishing effort is assumed to vary over different periods but to be constant within each period. A maximum-likelihood approach is developed for estimating natural mortality (M) and the catchability coefficient (q) simultaneously from catch-and-effort data. If there is not enough contrast in the data to provide reliable estimates of both M and q, as is often the case in practice, the method can be used to obtain the best possible values of q for a range of possible values of M. These techniques are illustrated with tiger prawn (Penaeus semisulcatus) data from the Northern Prawn Fishery of Australia.
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|Item Type:||Journal Article|
|Additional Information:||ISI Document Delivery No.: 193VX Times Cited: 20 Cited Reference Count: 17 Wang, YG C s i r o publishing Collingwood|
|Keywords:||northern-prawn-fishery, penaeus-semisulcatus, australia, carpentaria, rates, gulf|
|Divisions:||Current > QUT Faculties and Divisions > Science & Engineering Faculty|
|Copyright Owner:||© CSIRO 1999|
|Deposited On:||20 Nov 2015 04:45|
|Last Modified:||20 Nov 2015 04:45|
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