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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/45065

Title: Sibling Cannibalism of Young Red Drum, Sciaenops ocellatus, in Relation to Size Disparity and Metabolic Rates
Authors: Emily Yi-Ying Chang;I Chiu Liao
Keywords: frequency distribution;size variation;population size;catabolism;anabolism
Date: 2003
Issue Date: 2017-12-27T02:12:08Z
Publisher: Environmental Biology of Fishes
Abstract: Cannibalism is a leading cause of young mortality in the red drum, Sciaenops ocellatus, culture, and size disparity is its primary causative factor. Cannibalism did not occur in young fish, graded by a difference of 0.5 cm from 2.0 to 4.5 cm in total length. There was a shift in the size distribution from unimodal (normal) when there was no cannibalism, to bimodal or trimodal when cannibalism occurred. The results suggested that the wider was the size disparity, the greater was the sibling cannibalism. Size disparity increased with growth and in turn with sibling cannibalism, which became insignificant when the young grew to a size of about 6 cm. We present threshold levels of size disparity among siblings to prevent mutual cannibalism. We hypothesize that through sibling cannibalism a hierarchy may evolve in a red drum cohort, at which a stable population will form.
Relation: 68, pp.407-415
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/45065
Appears in Collections:[廖一久院士專區] 期刊論文

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