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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/29330

Title: Feeding mechanism and capture success of european whitefish (Coregonus lavaretus L.) larvae
Authors: M.-S. Mahjoub;O. Anneville;J.C. Molinero;S. Souissi;J.-S. Hwang
Contributors: NTOU:Institute of Marine Biology
國立臺灣海洋大學:海洋生物研究所
Keywords: feeding mechanism;capture success;behavior;fractal dimension;Coregonus lavaretus larvae
Date: 2008
Issue Date: 2011-10-21T03:05:19Z
Publisher: Knowledge and Management of Aquatic Ecosystems (BFPP-Connaissance et Gestion du Patrimoine Aquatique)
Abstract: Abstract:Feeding success is a key factor for larval growth and survival, and is highly dependent on small-scale processes which occur during the predator-prey interaction. We studied the feeding mechanisms involved in the capture success of the European whitefish (Coregonus lavaretus) larvae using video recordings. The successful predatory sequence of this species consists of the following 5 events: encounter, pursuit (including fixation), strike, capture and ingestion. C. lavaretus larvae can exhibit an “S” shaped posture and always strikes on its prey from beyond. The mean fixation distance for wild larvae was 1.75 ± 0.71 mm and for reared larvae was 1.65 ± 0.76 mm. This distance was significantly different between failed and successful snaps, and seemed to be an important parameter to the capture success of C. lavaretus larvae. The analysis of the complexity in predator’s swimming path showed that more convoluted approaches are less likely to lead to a fruitful attack.
Relation: 388(5), pp.1-14
URI: http://ntour.ntou.edu.tw/handle/987654321/29330
Appears in Collections:[海洋生物研究所] 期刊論文

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