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The application of a multiple-recapture technique for the study of some aspects of dynamics of large fish populations

✍ Scribed by S. Z. Rafail

Publisher
Springer-Verlag
Year
1972
Tongue
English
Weight
450 KB
Volume
17
Category
Article
ISSN
0025-3162

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✦ Synopsis

The multiple-recapture technique can be used to study some aspects of the dynamics of large fish populations, if a part of the fishing fleet is considered as experimental fishing boats by appointing observers to release tagged fish which are captured, while untagged fish captured are retained. The tagged and untagged populations are assumed to have different properties such as eatehability and survival rates. The fish are sampled during a number of sampling surveys with equal duration and no intervening time intervals between them. It is assumed that fish suffer from mortalities during sampling surveys. The parameters of untagged populations can be estimated with the help of the readily estimated parameters of tagged fish (gafail, t 972), the relationship between the parameters of tagged and untagged populations, and the numbers of untagged fish captured during the sampling surveys. The estimates are free from Types A and B tagging errors.

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