Abstract
AbstractA multispecies virtual population analysis (MSVPA) model for the southern Chilean demersal fishery was developed. Species included the Southern Hake Merluccius australis, Pink Cusk-eel Genypterus blacodes (hereafter, “Kingklip”), Southern Blue Whiting (SBW) Micromesistius australis, and Patagonian Grenadier (also known as Argentine Straptail) Macruronus magellanicus (hereafter, “Hoki”). Due to a lack of stomach content data, we constructed suitability coefficients based on predator–prey size ratios. Terminal fishing mortality (Fterm) was estimated by fitting a cohort analysis model to estimates of abundance from single-species models developed by the Chilean Instituto de Fomento Pesquero (IFOP; Institute for Fishing Development). Values of Fterm were used as input data in the MSVPA, driving the dynamics of the species and producing adult abundance estimates that were similar to IFOP estimates. Comparison of MSVPA and IFOP estimates suggested consistency in adult abundance and total abundance estim...
Highlights
A multispecies virtual population analysis (MSVPA) model for the southern Chilean demersal fishery was developed
Values of Fterm were used as input data in the MSVPA, driving the dynamics of the species and producing adult abundance estimates that were similar to Instituto de Fomento Pesquero (IFOP) estimates
The MSVPA model we constructed for the southern Chilean demersal fishery (SCDF) is the first quantitative approach of this kind to ever be applied to a Chilean fishery
Summary
A multispecies virtual population analysis (MSVPA) model for the southern Chilean demersal fishery was developed. Estimates of Southern Hake adult abundance from the MSVPA model and the single-species model were similar and exhibited the same temporal trend, with an MRE of 8.8%.
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