Document Detail


How sailfish use their bills to capture schooling prey.
MedLine Citation:
PMID:  24759865     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
The istiophorid family of billfishes is characterized by an extended rostrum or 'bill'. While various functions (e.g. foraging and hydrodynamic benefits) have been proposed for this structure, until now no study has directly investigated the mechanisms by which billfishes use their rostrum to feed on prey. Here, we present the first unequivocal evidence of how the bill is used by Atlantic sailfish (Istiophorus albicans) to attack schooling sardines in the open ocean. Using high-speed video-analysis, we show that (i) sailfish manage to insert their bill into sardine schools without eliciting an evasive response and (ii) subsequently use their bill to either tap on individual prey targets or to slash through the school with powerful lateral motions characterized by one of the highest accelerations ever recorded in an aquatic vertebrate. Our results demonstrate that the combination of stealth and rapid motion make the sailfish bill an extremely effective feeding adaptation for capturing schooling prey.
Authors:
P Domenici; A D M Wilson; R H J M Kurvers; S Marras; J E Herbert-Read; J F Steffensen; S Krause; P E Viblanc; P Couillaud; J Krause
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Publication Detail:
Type:  Journal Article     Date:  2014-04-23
Journal Detail:
Title:  Proceedings. Biological sciences / The Royal Society     Volume:  281     ISSN:  1471-2954     ISO Abbreviation:  Proc. Biol. Sci.     Publication Date:  2014  
Date Detail:
Created Date:  2014-04-24     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101245157     Medline TA:  Proc Biol Sci     Country:  England    
Other Details:
Languages:  eng     Pagination:  20140444     Citation Subset:  IM    
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