Amazon fisheries II - Variations in the relative abundance of tucunaré (Cichla 
ocellaris, C. temensis) based on catch and effort data of the trident fisheries

Petrere Jr., Miguel

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Amazon fisheries II - Variations in the relative abundance of tucunaré (Cichla ocellaris, C. temensis) based on catch and effort data of the trident fisheries

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Citation

Petrere Jr., M. (1986). Amazon fisheries II - Variations in the relative abundance of tucunaré (Cichla ocellaris, C. temensis) based on catch and effort data of the trident fisheries. Amazoniana: Limnologia et Oecologia Regionalis Systematis Fluminis Amazonas, 10(1), 1-13.

Cite as: https://hdl.handle.net/21.11116/0000-0004-774B-3

Abstract

In this paper, the application of analysis of covariance on catch and effort data from seven lakes
located at different distances shows that the adjusted mean catches, which are calculated discounting
the effect of the average fishing effort increase as further is the lake from Manaus. Effects on the interactions between lake and season (and also between lake and year) are discussed according to lake
morphology and fish behaviour.