Data/hora: 11/06/2024 10:17:38

Provedor de dados: 	5	
País: 	France	
Título: 	Circadian behaviour of Tectus (Trochus) niloticus in the southwest Pacific inferred from accelerometry	
Autores: 	Jolivet, Aurelie; Chauvaud, Laurent; Thebault, Julien; Robson, Anthony A.; Dumas, Pascal; Amos, George; Lorrain, Anne.	
Data: 	2015	
Ano: 	2015	
Palavras-chave: 	Activity; Accelerometry; 24-hour periodicity; Tectus niloticus; Foraging; Migration.	
Resumo: 	Background : Behaviour and time spent active and inactive are key factors in animal ecology, with important consequences for bioenergetics. For the first time, here, we equipped the gastropod Tectus (= Trochus) niloticus with accelerometers to describe activity rhythms at two sites in the Southwest Pacific with different temperature regimes: New Caledonia and Vanuatu. Results : Based on a 24-hour cycle, T. niloticus activity began at dusk and gradually stopped during the night, before sunrise. This nocturnal behaviour was characterised by short (duration &lt;30 s), low intensity (acceleration &lt; 0.12 ɡ) movements and was probably associated with foraging behaviour. We assumed that activity ceased once the animal was satiated. Our analysis of two size groups in Vanuatu (80–90 mm vs. 120–140 mm, basal shell diameter) revealed a size effect; smaller specimens displayed greater activity, reflected by more intense and longer movements while migrating at night toward the edge of the reef. This nocturnal behaviour is not uncommon for grazing gastropods and is mainly associated with attempting to avoid visual predators whilst feeding. Conclusions : The use of accelerometers coupled with light and temperature sensors provided detailed information on topshell behaviour and physiology under natural conditions. These data provide a foundation for identifying potential changes in the fine-scale behaviour of T. niloticus in response to environmental changes, which is essential in animal ecology and stock conservation.	
Tipo: 	Text	
Idioma: 	Inglês	
Identificador: 	https://archimer.ifremer.fr/doc/00295/40658/39640.pdf

DOI:10.1186/s40462-015-0054-5

https://archimer.ifremer.fr/doc/00295/40658/	
Editor: 	Biomed Central Ltd	
Formato: 	application/pdf	
Fonte: 	Movement Ecology (2051-3933) (Biomed Central Ltd), 2015 , Vol. 3 , N. 1 , P. 26 (12p.)	
Fonte: 	2015 Jolivet et al. Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

info:eu-repo/semantics/openAccess

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