Behavioural patterns of a Tiger Shark (<i>Galeocerdo cuvier</i>) feeding aggregation at a blue whale carcass in Prony Bay, New Caledonia

Clua, Éric; Chauvet, C.; Read, Tyffen; Werry, Jonathan M.; Lee, Joe

doi:10.1080/10236244.2013.773127

Cited by 47 publications

(34 citation statements)

References 48 publications

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“…Here, shark segregation by body size, albeit statistically significant, was of very limited magnitude. Contrary to previous findings [49,52,53], shark assortment by sex was also insignificant. Moreover, sharks established relatively stable dominance relationships that were related neither to size nor to sex.…”

Section: Discussioncontrasting

confidence: 99%

“…Although solitary sharks might occasionally gather around a common food source (e.g. whale carcasses [49]), we caution that the artificial aggregations described in this study do not reflect situations that commonly occur in the wild. Still, we accept as a core idea that the ability to assess peers through social information is beneficial in all contexts where individuals gather and interact with one another (see [50] for an example).…”

Section: Discussionmentioning

confidence: 94%

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Concede or clash? Solitary sharks competing for food assess rivals to decide

et al. 2018

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To adapt to their environment, organisms can either directly interact with their surroundings or use social information (i.e. information provided by neighbouring individuals). Social information relates to the external features of surrounding peers, and little is known about its use by solitary species. Here, we investigated the use of social cues in a solitary marine predator by creating artificial aggregations of free-ranging sicklefin lemon sharks (). Using a novel monitoring protocol, we analysed both dominance interactions and tolerance associations between sharks competing for food in relation with the number, the morphology and the behaviour of rivals. Sharks produced more agonistic displays and spent more time around the bait as competitors were more abundant. Moreover, the morphological attributes of competitors had very limited influence on the structure of shark social interactions. Instead, sharks appeared to establish tolerance relationships with competitors according to their individual behaviour. Furthermore, the more two sharks were observed together at a given study site, the fewer agonistic interactions they exchanged. We discuss these findings as evidence of the use of social cues in a non-gregarious predatory species and suggest directions for future research.

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Section: Discussioncontrasting

confidence: 99%

Section: Discussionmentioning

confidence: 94%

Concede or clash? Solitary sharks competing for food assess rivals to decide

et al. 2018

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“…For example, Clua et al (2013) observed adult bull sharks as the shark species responsible for the killing of an exhausted blue whale calf after entering this same area. Fishing efforts in the numerous rivers along the west coast of New Caledonia revealed several small juvenile bull sharks providing evidence that localised pupping occurs which is consistent with other studies showing female's return to rivers or estuaries, probably for pupping (Tillet et al 2011;Werry et al 2011).…”

Section: Discussionmentioning

confidence: 99%

Sex-based spatial segregation of adult bull sharks,Carcharhinus leucas, in the New Caledonian great lagoon

Werry

Clua

2013

Aquat. Living Resour.

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-Conservation of threatened large sharks and management of shark-human interactions requires an understanding of shark occurrence and movement patterns. Here, we present the first catch, movement and behaviour data of adult bull sharks, Carcharhinus leucas, in New Caledonia. Amongst six adult C. leucas tagged with passive acoustic tags, four females were caught in coastal waters while males were only found at an isolated oceanic barrier coral reef over 100 km from the nearest river mouth. Two females were monitored in the southern New Caledonia lagoon for 707 and 208 days respectively and displayed classical transient behaviour and sporadic short-term residency around a coastal reef bay, with movements in and out a river detected prior to spring. Adult C. leucas in New Caledonia may develop a sex-based spatial segregation with an atypical presence of adult males in oceanic environments, probably influenced by the unique estuarine-marine continuum of the New Caledonian great lagoon.

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“…For example, provisioning may instigate 'feeding frenzies' (cf. Clua et al, 2013), with individuals aggressively competing, resulting in injury to other individuals (e.g., dolphins e Smith et al, 2008;sharks e Clua et al, 2010a;Dobson, 2006;Orams, 2002), or accidental beaching (e.g., stingrays and eaglerays e Newsome et al, 2004).…”

Section: Habituation To Provisioningmentioning

confidence: 98%