A MARKOV MOVEMENT MODEL OF YELLOWFIN TUNA IN THE EASTERN-PACIFIC-OCEAN AND SOME ANALYSES FOR INTERNATIONAL MANAGEMENT

被引：35

作者：

DERISO, RB

PUNSLY, RG

BAYLIFF, WH

机构：

[1] Inter-American Tropical Tuna Commission, Scripps Institution of Oceanography, La Jolla

来源：

FISHERIES RESEARCH | 1991年 / 11卷 / 3-4期

关键词：

D O I：

10.1016/0165-7836(91)90010-D

中图分类号：

S9 [水产、渔业];

学科分类号：

0908 ;

摘要：

A movement model is developed to quantify the probabilities of movement for yellowfin tuna in the Eastern Pacific Ocean. The model specifies a probability transition matrix for the odds of a given-aged individual moving from one 5-degrees-2 spatial stratum to an adjacent spatial stratum during each month. A novel feature of the model is the description of discrete movement with three parameters (velocity, diffusion, and direction) in a manner analogous to continuous movement models. A maximum likelihood approach is taken to estimate movement and catchability parameters for data obtained from tagging experiments. Yield-per-recruit analysis is a critical, though often neglected, tool required to evaluate the need for international management of tunas. A modified mean residence time calculation is shown which addresses some consequences of eliminating the harvest of smaller sub-optimal sized yellowfin tuna.

引用

页码：375 / 395

页数：21

共 13 条

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