Thresher sharks use tail-slaps as a hunting strategy.

The hunting strategies of pelagic thresher sharks (Alopias pelagicus) were investigated at Pescador Island in the Philippines. It has long been suspected that thresher sharks hunt with their scythe-like tails but the kinematics associated with the behaviour in the wild are poorly understood. From 61...

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Autores principales:	Simon P Oliver, John R Turner, Klemens Gann, Medel Silvosa, Tim D'Urban Jackson
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2013
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/a73bd7e23c5c4a2599140555e1dce35d
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spelling	oai:doaj.org-article:a73bd7e23c5c4a2599140555e1dce35d2021-11-18T07:38:00ZThresher sharks use tail-slaps as a hunting strategy.1932-620310.1371/journal.pone.0067380https://doaj.org/article/a73bd7e23c5c4a2599140555e1dce35d2013-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/23874415/?tool=EBIhttps://doaj.org/toc/1932-6203The hunting strategies of pelagic thresher sharks (Alopias pelagicus) were investigated at Pescador Island in the Philippines. It has long been suspected that thresher sharks hunt with their scythe-like tails but the kinematics associated with the behaviour in the wild are poorly understood. From 61 observations recorded by handheld underwater video camera between June and October 2010, 25 thresher shark shunting events were analysed. Thresher sharks employed tail-slaps to debilitate sardines at all times of day. Hunting events comprised preparation, strike, wind-down recovery and prey item collection phases, which occurred sequentially. Preparation phases were significantly longer than the others, presumably to enable a shark to windup a tail-slap. Tail-slaps were initiated by an adduction of the pectoral fins, a manoeuvre that changed a thresher shark's pitch promoting its posterior region to lift rapidly, and stall its approach. Tail-slaps occurred with such force that they may have caused dissolved gas to diffuse out of the water column forming bubbles. Thresher sharks were able to consume more than one sardine at a time, suggesting that tail-slapping is an effective foraging strategy for hunting schooling prey. Pelagic thresher sharks appear to pursue sardines opportunistically by day and night, which may make them vulnerable to fisheries. Alopiids possess specialist pectoral and caudal fins that are likely to have evolved, at least in part, for tail-slapping. The evidence is now clear; thresher sharks really do hunt with their tails.Simon P OliverJohn R TurnerKlemens GannMedel SilvosaTim D'Urban JacksonPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 8, Iss 7, p e67380 (2013)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Simon P Oliver John R Turner Klemens Gann Medel Silvosa Tim D'Urban Jackson Thresher sharks use tail-slaps as a hunting strategy.
description	The hunting strategies of pelagic thresher sharks (Alopias pelagicus) were investigated at Pescador Island in the Philippines. It has long been suspected that thresher sharks hunt with their scythe-like tails but the kinematics associated with the behaviour in the wild are poorly understood. From 61 observations recorded by handheld underwater video camera between June and October 2010, 25 thresher shark shunting events were analysed. Thresher sharks employed tail-slaps to debilitate sardines at all times of day. Hunting events comprised preparation, strike, wind-down recovery and prey item collection phases, which occurred sequentially. Preparation phases were significantly longer than the others, presumably to enable a shark to windup a tail-slap. Tail-slaps were initiated by an adduction of the pectoral fins, a manoeuvre that changed a thresher shark's pitch promoting its posterior region to lift rapidly, and stall its approach. Tail-slaps occurred with such force that they may have caused dissolved gas to diffuse out of the water column forming bubbles. Thresher sharks were able to consume more than one sardine at a time, suggesting that tail-slapping is an effective foraging strategy for hunting schooling prey. Pelagic thresher sharks appear to pursue sardines opportunistically by day and night, which may make them vulnerable to fisheries. Alopiids possess specialist pectoral and caudal fins that are likely to have evolved, at least in part, for tail-slapping. The evidence is now clear; thresher sharks really do hunt with their tails.
format	article
author	Simon P Oliver John R Turner Klemens Gann Medel Silvosa Tim D'Urban Jackson
author_facet	Simon P Oliver John R Turner Klemens Gann Medel Silvosa Tim D'Urban Jackson
author_sort	Simon P Oliver
title	Thresher sharks use tail-slaps as a hunting strategy.
title_short	Thresher sharks use tail-slaps as a hunting strategy.
title_full	Thresher sharks use tail-slaps as a hunting strategy.
title_fullStr	Thresher sharks use tail-slaps as a hunting strategy.
title_full_unstemmed	Thresher sharks use tail-slaps as a hunting strategy.
title_sort	thresher sharks use tail-slaps as a hunting strategy.
publisher	Public Library of Science (PLoS)
publishDate	2013
url	https://doaj.org/article/a73bd7e23c5c4a2599140555e1dce35d
work_keys_str_mv	AT simonpoliver threshersharksusetailslapsasahuntingstrategy AT johnrturner threshersharksusetailslapsasahuntingstrategy AT klemensgann threshersharksusetailslapsasahuntingstrategy AT medelsilvosa threshersharksusetailslapsasahuntingstrategy AT timdurbanjackson threshersharksusetailslapsasahuntingstrategy
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Thresher sharks use tail-slaps as a hunting strategy.

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