Relation between mean and variance in catch numbers of fish egg and larva |
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| Authors: | Masahiro Ueno |
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| Institution: | 1. Fisheries Research Station, Kyoto University, Nagahama, 625, Maizuru, Japan
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| Abstract: | In each of six areas with various horizontal scale from 0.4 to 15.6 nautical miles, many surveys with vertical net hauls are made for sampling fish eggs and larvae. Though values ofC
A are widely spread in each area, the variances
2 and the meanm of catch numbers calculated from each survey follow approximately the relation from a Poisson mixture model (PMM).
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