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- W2069173820 abstract "Unaccounted fishing mortality has been the focus of a growing body of research. Its importance as both an input to stock assessment models and as information to be presented to fishery managers is now being realized. Such information is usually gathered by expensive at-sea sampling programmes and through complex experiments. Proposed here is a modeling approach that use estimates of selectivity to estimate discard and escapee mortality through a series of simple equations. The probabilities of first, being caught by a fishing gear, and second, retained to become part of the landings, are modeled as a function of fish length. A variety of methods have been proposed for the presentation of information about unaccounted fishing mortality and an example of both a graphical presentation of the fate of fish encountering fishing gear and a tabulated set of efficiency indices are described. As an example the proposed approach is applied to the Hauraki Gulf snapper (Pagrus auratus) fishery off the northeast coast of New Zealand. It is found that overall the fishery is quite efficient when compared to reported overseas fisheries and that unaccounted fishing mortality may not be a significant component of total fishing mortality." @default.
- W2069173820 created "2016-06-24" @default.
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- W2069173820 date "2000-03-01" @default.
- W2069173820 modified "2023-09-27" @default.
- W2069173820 title "Estimating unaccounted fishing mortality using selectivity data: an application in the Hauraki Gulf snapper (Pagrus auratus) fishery in New Zealand" @default.
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- W2069173820 doi "https://doi.org/10.1016/s0165-7836(99)00109-5" @default.
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