High turbidity levels alter coral reef fish movement in a foraging task

Abstract Sensory systems allow animals to detect and respond to stimuli in their environment and underlie all behaviour. However, human induced pollution is increasingly interfering with the functioning of these systems. Increased suspended sediment, or turbidity, in aquatic habitats reduces the rea...

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Autores principales:	Cait Newport, Oliver Padget, Theresa Burt de Perera
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/b144bcaf46ba4082b956ffbf968439a8
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spelling	oai:doaj.org-article:b144bcaf46ba4082b956ffbf968439a82021-12-02T16:31:11ZHigh turbidity levels alter coral reef fish movement in a foraging task10.1038/s41598-021-84814-52045-2322https://doaj.org/article/b144bcaf46ba4082b956ffbf968439a82021-03-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-84814-5https://doaj.org/toc/2045-2322Abstract Sensory systems allow animals to detect and respond to stimuli in their environment and underlie all behaviour. However, human induced pollution is increasingly interfering with the functioning of these systems. Increased suspended sediment, or turbidity, in aquatic habitats reduces the reactive distance to visual signals and may therefore alter movement behaviour. Using a foraging task in which fish (Rhinecanthus aculeatus) had to find six food sites in an aquarium, we tested the impact of high turbidity (40–68 NTU; 154 mg/L) on foraging efficiency using a detailed and novel analysis of individual movements. High turbidity led to a significant decrease in task efficacy as fish took longer to begin searching and find food, and they travelled further whilst searching. Trajectory analyses revealed that routes were less efficient and that fish in high turbidity conditions were more likely to cover the same ground and search at a slower speed. These results were observed despite the experimental protocol allowing for the use of alternate sensory systems (e.g. olfaction, lateral line). Given that movement underlies fundamental behaviours including foraging, mating, and predator avoidance, a reduction in movement efficiency is likely to have a significant impact on the health and population dynamics of visually-guided fish species.Cait NewportOliver PadgetTheresa Burt de PereraNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-10 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Cait Newport Oliver Padget Theresa Burt de Perera High turbidity levels alter coral reef fish movement in a foraging task
description	Abstract Sensory systems allow animals to detect and respond to stimuli in their environment and underlie all behaviour. However, human induced pollution is increasingly interfering with the functioning of these systems. Increased suspended sediment, or turbidity, in aquatic habitats reduces the reactive distance to visual signals and may therefore alter movement behaviour. Using a foraging task in which fish (Rhinecanthus aculeatus) had to find six food sites in an aquarium, we tested the impact of high turbidity (40–68 NTU; 154 mg/L) on foraging efficiency using a detailed and novel analysis of individual movements. High turbidity led to a significant decrease in task efficacy as fish took longer to begin searching and find food, and they travelled further whilst searching. Trajectory analyses revealed that routes were less efficient and that fish in high turbidity conditions were more likely to cover the same ground and search at a slower speed. These results were observed despite the experimental protocol allowing for the use of alternate sensory systems (e.g. olfaction, lateral line). Given that movement underlies fundamental behaviours including foraging, mating, and predator avoidance, a reduction in movement efficiency is likely to have a significant impact on the health and population dynamics of visually-guided fish species.
format	article
author	Cait Newport Oliver Padget Theresa Burt de Perera
author_facet	Cait Newport Oliver Padget Theresa Burt de Perera
author_sort	Cait Newport
title	High turbidity levels alter coral reef fish movement in a foraging task
title_short	High turbidity levels alter coral reef fish movement in a foraging task
title_full	High turbidity levels alter coral reef fish movement in a foraging task
title_fullStr	High turbidity levels alter coral reef fish movement in a foraging task
title_full_unstemmed	High turbidity levels alter coral reef fish movement in a foraging task
title_sort	high turbidity levels alter coral reef fish movement in a foraging task
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/b144bcaf46ba4082b956ffbf968439a8
work_keys_str_mv	AT caitnewport highturbiditylevelsaltercoralreeffishmovementinaforagingtask AT oliverpadget highturbiditylevelsaltercoralreeffishmovementinaforagingtask AT theresaburtdeperera highturbiditylevelsaltercoralreeffishmovementinaforagingtask
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High turbidity levels alter coral reef fish movement in a foraging task

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