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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/29184

Title: Behavioral ontogeny in larvae and early juveniles of the giant trevally (Caranx ignobilis) (Pisces: Carangidae)
Authors: Leis Jeffrey M.;Hay Amanda C.;Clark Domine L.;Chen I-Shiung;Shao Kwang-Tsao
Contributors: NTOU:Institute of Marine Biology
Keywords: Biology;Ecology;Fisheries
Date: 2006
Issue Date: 2011-10-21T03:04:47Z
Publisher: Fishery Bulletin
Abstract: Abstract:Behavior of young (8−18 mm SL) giant trevally (Caranx ignobilis), a large coral-reef−associated predator, was observed in the laboratory and the ocean. Size was a better predictor of swimming speed and endurance than was age. Critical speed increased with size from 12 to 40 cm/s at 2.7 cm/s for each mm increase in size. Mean scaled critical speed was 19 body lengths/s and was not size related. Swimming speed in the ocean was 4 to 20 cm/s (about half of critical speed) and varied among areas, but within each area, it increased at 2 cm/s for each mm increase in size. Swimming endurance in the laboratory increased from 5 to 40 km at 5 km for each mm increase in size. Vertical distribution changed ontogenetically: larvae swam shallower, but more variably, and then deeper with growth. Two-thirds of individuals swam directionally with no ontogenetic increase in orientation precision. Larvae swam offshore off open coasts, but not in a bay. In situ observations of C. ignobilis feeding, interacting with pelagic animals, and reacting to reefs are reported. Manusc
Relation: 104(3), pp.401-414
URI: http://ntour.ntou.edu.tw/handle/987654321/29184
Appears in Collections:[海洋生物研究所] 期刊論文

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