Work

Catch-per-unit-effort: which estimator is best?

Year: 2010

Type: article

Abstract: In this paper we examine the accuracy and precision of three indices of catch-per-unit-effort (CPUE). We carried out simulations, generating catch data according to six probability distributions (normal, Poisson, lognormal, gamma, delta and negative binomial), three variance structures (constant, proportional to effort and proportional to the squared effort) and their magnitudes (tail weight). The Jackknife approach of the index is recommended, whenever catch is proportional to effort or even under small deviations from proportionality assumption, when a ratio estimator is to be applied and little is known about the underlying behaviour of variables, as is the case for most fishery studies.

Source: Brazilian Journal of Biology

DOI: 10.1590/s1519-69842010005000010

Authors: M. Petrere Jr., HC. Giacomini, P. De Marco Jr.

Institutions: Universidade Estadual Paulista (Unesp), Universidade Federal de Goiás

Language: English

Topic: Marine and fisheries research

Subfield: Aquatic Science

Field: Agricultural and Biological Sciences

Domain: Life Sciences

Open Access status: gold

Estimated APC paid: $680

Funders: Conselho Nacional de Desenvolvimento Científico e Tecnológico, Universidade Estadual Paulista