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- Title
A model of between-haul variation in selectivity.
- Authors
Fryer, R. J.
- Abstract
The selectivity of the same fishing net can vary between hauls. Most selectivity models ignore this between-haul variation by pooling data over hauls. This approach is shown to result in misleadingly small parameter standard errors, which can lead to incorrect inferences about the differences between nets. A model is developed which incorporates between-haul variation and which provides realistic parameter standard errors. Methods of parameter estimation are described. The model is illustrated by a comparison of the selectivity of two nets.
- Subjects
SELECTIVITY of fishery gear; FISHERY gear; FISHING nets; PARAMETER estimation; SIMULATION methods &; models
- Publication
ICES Journal of Marine Science / Journal du Conseil, 1991, Vol 48, Issue 3, p281
- ISSN
1054-3139
- Publication type
Article
- DOI
10.1093/icesjms/48.3.281