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Closed Access item CVPA, an expanded VPA with cannibalism. Application to a hake population
|Citation:||Fisheries Research 3, 61-79 (1985)|
|Abstract:||A generalized method of VPA, called CVPA, including the effect of cannibalism is
presented. In this method, natural mortality was split into two components, one depending
on cannibalism and the other, which remains constant, due to all other natural causes.
These are not evaluated, but the method enables us to include new mortality causes when
they are quantified.
This method was applied to Cape hake (Merluccius capensis) off the coast of Namibia,
from latitudes 25 to 30°S. The results were compared to the values obtained using the
standard VPA. Significant differences in number of fish at any given age and natural
mortality were found between these two methods, showing that standard VPA unde~-
estimates the values for the youngest age groups. Biomass levels at a given age show the
same trend somewhat attenuated.|
|Description:||19 pages,5 figures, 15 tables. Available online 2 October 2003|
|Publisher version (URL):||http://dx.doi.org/10.1016/0165-7836(85)90008-6|
|Appears in Collections:||(ICM) Artículos|
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