Behavioural and reflex responses of mottled mojarra Eucinostomus lefroyi (Gerreidae) to cold shock exposure

Global climate change is predicted to increase incidences of abrupt declines in oceanic temperatures due to storms or upwelling. Fish occupying shallow, near-shore marine habitats may be vulnerable to mortality or sub-lethal fitness effects due to cold shock. Mottled mojarra Eucinostomus lefroyi are...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	E Samson, JW Brownscombe, SJ Cooke
Formato:	article
Lenguaje:	EN
Publicado:	Inter-Research 2014
Materias:	Biology (General) QH301-705.5 Microbiology QR1-502
Acceso en línea:	https://doaj.org/article/922477f8dbe640d297d3014c4a45f8bc
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:922477f8dbe640d297d3014c4a45f8bc
record_format	dspace
spelling	oai:doaj.org-article:922477f8dbe640d297d3014c4a45f8bc2021-11-18T09:20:07ZBehavioural and reflex responses of mottled mojarra Eucinostomus lefroyi (Gerreidae) to cold shock exposure1864-77821864-779010.3354/ab00609https://doaj.org/article/922477f8dbe640d297d3014c4a45f8bc2014-12-01T00:00:00Zhttps://www.int-res.com/abstracts/ab/v23/n1/p101-108/https://doaj.org/toc/1864-7782https://doaj.org/toc/1864-7790Global climate change is predicted to increase incidences of abrupt declines in oceanic temperatures due to storms or upwelling. Fish occupying shallow, near-shore marine habitats may be vulnerable to mortality or sub-lethal fitness effects due to cold shock. Mottled mojarra Eucinostomus lefroyi are a ubiquitous prey species associated with subtropical and tropical coastal habitats and thus serve as a model for evaluating the consequences of cold shock events. Here, we conducted one of the first studies of cold shock on a tropical-subtropical fish species. Fish acclimated to 24°C were exposed to acute temperature drops to 16, 18, or 20°C for 1 h. Ventilation rates were assessed every 15 min during exposure, and equilibrium loss every 5 min. Thirty minutes after cold shock exposure, fish were placed in a circular swim flume and chased by hand until exhaustion to measure chase time and distance chased as proxies for swimming capabilities. Fish exposed to 18 and 20°C had significantly higher ventilation rates than those exposed to 16°C or controls held at 24°C. Exposure to 16 and 18°C caused reflex impairment (e.g. no response to tail grabbing), while exposure to 20°C caused no impairment. After 30 min of recovery at ambient temperature, no reflex impairments were detected in any of the treatments, and the swimming capabilities of fish exposed to cold shock were similar to, or better than control fish. Our findings suggest that abrupt changes in water temperature >4°C below ambient can cause behavioural impairments that may lead to mortality in this species.E SamsonJW BrownscombeSJ CookeInter-ResearcharticleBiology (General)QH301-705.5MicrobiologyQR1-502ENAquatic Biology, Vol 23, Iss 1, Pp 101-108 (2014)
institution	DOAJ
collection	DOAJ
language	EN
topic	Biology (General) QH301-705.5 Microbiology QR1-502
spellingShingle	Biology (General) QH301-705.5 Microbiology QR1-502 E Samson JW Brownscombe SJ Cooke Behavioural and reflex responses of mottled mojarra Eucinostomus lefroyi (Gerreidae) to cold shock exposure
description	Global climate change is predicted to increase incidences of abrupt declines in oceanic temperatures due to storms or upwelling. Fish occupying shallow, near-shore marine habitats may be vulnerable to mortality or sub-lethal fitness effects due to cold shock. Mottled mojarra Eucinostomus lefroyi are a ubiquitous prey species associated with subtropical and tropical coastal habitats and thus serve as a model for evaluating the consequences of cold shock events. Here, we conducted one of the first studies of cold shock on a tropical-subtropical fish species. Fish acclimated to 24°C were exposed to acute temperature drops to 16, 18, or 20°C for 1 h. Ventilation rates were assessed every 15 min during exposure, and equilibrium loss every 5 min. Thirty minutes after cold shock exposure, fish were placed in a circular swim flume and chased by hand until exhaustion to measure chase time and distance chased as proxies for swimming capabilities. Fish exposed to 18 and 20°C had significantly higher ventilation rates than those exposed to 16°C or controls held at 24°C. Exposure to 16 and 18°C caused reflex impairment (e.g. no response to tail grabbing), while exposure to 20°C caused no impairment. After 30 min of recovery at ambient temperature, no reflex impairments were detected in any of the treatments, and the swimming capabilities of fish exposed to cold shock were similar to, or better than control fish. Our findings suggest that abrupt changes in water temperature >4°C below ambient can cause behavioural impairments that may lead to mortality in this species.
format	article
author	E Samson JW Brownscombe SJ Cooke
author_facet	E Samson JW Brownscombe SJ Cooke
author_sort	E Samson
title	Behavioural and reflex responses of mottled mojarra Eucinostomus lefroyi (Gerreidae) to cold shock exposure
title_short	Behavioural and reflex responses of mottled mojarra Eucinostomus lefroyi (Gerreidae) to cold shock exposure
title_full	Behavioural and reflex responses of mottled mojarra Eucinostomus lefroyi (Gerreidae) to cold shock exposure
title_fullStr	Behavioural and reflex responses of mottled mojarra Eucinostomus lefroyi (Gerreidae) to cold shock exposure
title_full_unstemmed	Behavioural and reflex responses of mottled mojarra Eucinostomus lefroyi (Gerreidae) to cold shock exposure
title_sort	behavioural and reflex responses of mottled mojarra eucinostomus lefroyi (gerreidae) to cold shock exposure
publisher	Inter-Research
publishDate	2014
url	https://doaj.org/article/922477f8dbe640d297d3014c4a45f8bc
work_keys_str_mv	AT esamson behaviouralandreflexresponsesofmottledmojarraeucinostomuslefroyigerreidaetocoldshockexposure AT jwbrownscombe behaviouralandreflexresponsesofmottledmojarraeucinostomuslefroyigerreidaetocoldshockexposure AT sjcooke behaviouralandreflexresponsesofmottledmojarraeucinostomuslefroyigerreidaetocoldshockexposure
_version_	1718420914479038464

Behavioural and reflex responses of mottled mojarra Eucinostomus lefroyi (Gerreidae) to cold shock exposure

Ejemplares similares