Physiological and biochemical responses of brackish-water clam Corbicula japonica under global-warming conditions: Water temperature, salinity, and food availability

To investigate biomarkers representing the physiological and biochemical responses of the brackish-water clam Corbicula japonica, we conducted a full factorial-design experiment to test different water-temperature levels (20 °C and 25 °C), salinity levels (5 and 20 psu), and food-availability levels...

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Autores principales:	Preeti Pokhrel, Jumpei Suzuki, Shumona Akther, Masafumi Fujita
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Condition index Energy reserve Antioxidant response Oxidative damage Principal component analysis Ecology QH540-549.5
Acceso en línea:	https://doaj.org/article/315128c06a1d44c4b7c5ba132a0abce4
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spelling	oai:doaj.org-article:315128c06a1d44c4b7c5ba132a0abce42021-12-01T04:54:46ZPhysiological and biochemical responses of brackish-water clam Corbicula japonica under global-warming conditions: Water temperature, salinity, and food availability1470-160X10.1016/j.ecolind.2021.107866https://doaj.org/article/315128c06a1d44c4b7c5ba132a0abce42021-10-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S1470160X21005318https://doaj.org/toc/1470-160XTo investigate biomarkers representing the physiological and biochemical responses of the brackish-water clam Corbicula japonica, we conducted a full factorial-design experiment to test different water-temperature levels (20 °C and 25 °C), salinity levels (5 and 20 psu), and food-availability levels (0.5 and 2.0 mg suspended solids (SS)·ind−1·d−1). Increase in water temperature significantly decreased superoxide dismutase (SOD) and catalase (CAT) activities and oxyradical-absorbance capacity (ORAC), leading to lipid peroxidation (i.e., oxidative damage). Salinity activated or inhibited these biochemical markers. Food availability supported a detoxification mechanism against oxidative stress. Principal-components and cluster analyses revealed that a total of eight experimental conditions fell into three groups related to water temperature and/or salinity. The shift from Group I (20 °C water temperature) to Group II (25 °C water temperature and 5-psu salinity) demonstrated that the condition index, SOD, CAT, and ORAC had significantly decreased. With the further shift to Group III (25 °C water temperature and 20-psu salinity), we found a prominent increase in ORAC, which led to oxidative damage but no mortality. We conclude that future habitat changes driven by global warming should be closely watched, particularly given that local anthropogenic disturbances further add to natural ones.Preeti PokhrelJumpei SuzukiShumona AktherMasafumi FujitaElsevierarticleCondition indexEnergy reserveAntioxidant responseOxidative damagePrincipal component analysisEcologyQH540-549.5ENEcological Indicators, Vol 129, Iss , Pp 107866- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Condition index Energy reserve Antioxidant response Oxidative damage Principal component analysis Ecology QH540-549.5
spellingShingle	Condition index Energy reserve Antioxidant response Oxidative damage Principal component analysis Ecology QH540-549.5 Preeti Pokhrel Jumpei Suzuki Shumona Akther Masafumi Fujita Physiological and biochemical responses of brackish-water clam Corbicula japonica under global-warming conditions: Water temperature, salinity, and food availability
description	To investigate biomarkers representing the physiological and biochemical responses of the brackish-water clam Corbicula japonica, we conducted a full factorial-design experiment to test different water-temperature levels (20 °C and 25 °C), salinity levels (5 and 20 psu), and food-availability levels (0.5 and 2.0 mg suspended solids (SS)·ind−1·d−1). Increase in water temperature significantly decreased superoxide dismutase (SOD) and catalase (CAT) activities and oxyradical-absorbance capacity (ORAC), leading to lipid peroxidation (i.e., oxidative damage). Salinity activated or inhibited these biochemical markers. Food availability supported a detoxification mechanism against oxidative stress. Principal-components and cluster analyses revealed that a total of eight experimental conditions fell into three groups related to water temperature and/or salinity. The shift from Group I (20 °C water temperature) to Group II (25 °C water temperature and 5-psu salinity) demonstrated that the condition index, SOD, CAT, and ORAC had significantly decreased. With the further shift to Group III (25 °C water temperature and 20-psu salinity), we found a prominent increase in ORAC, which led to oxidative damage but no mortality. We conclude that future habitat changes driven by global warming should be closely watched, particularly given that local anthropogenic disturbances further add to natural ones.
format	article
author	Preeti Pokhrel Jumpei Suzuki Shumona Akther Masafumi Fujita
author_facet	Preeti Pokhrel Jumpei Suzuki Shumona Akther Masafumi Fujita
author_sort	Preeti Pokhrel
title	Physiological and biochemical responses of brackish-water clam Corbicula japonica under global-warming conditions: Water temperature, salinity, and food availability
title_short	Physiological and biochemical responses of brackish-water clam Corbicula japonica under global-warming conditions: Water temperature, salinity, and food availability
title_full	Physiological and biochemical responses of brackish-water clam Corbicula japonica under global-warming conditions: Water temperature, salinity, and food availability
title_fullStr	Physiological and biochemical responses of brackish-water clam Corbicula japonica under global-warming conditions: Water temperature, salinity, and food availability
title_full_unstemmed	Physiological and biochemical responses of brackish-water clam Corbicula japonica under global-warming conditions: Water temperature, salinity, and food availability
title_sort	physiological and biochemical responses of brackish-water clam corbicula japonica under global-warming conditions: water temperature, salinity, and food availability
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/315128c06a1d44c4b7c5ba132a0abce4
work_keys_str_mv	AT preetipokhrel physiologicalandbiochemicalresponsesofbrackishwaterclamcorbiculajaponicaunderglobalwarmingconditionswatertemperaturesalinityandfoodavailability AT jumpeisuzuki physiologicalandbiochemicalresponsesofbrackishwaterclamcorbiculajaponicaunderglobalwarmingconditionswatertemperaturesalinityandfoodavailability AT shumonaakther physiologicalandbiochemicalresponsesofbrackishwaterclamcorbiculajaponicaunderglobalwarmingconditionswatertemperaturesalinityandfoodavailability AT masafumifujita physiologicalandbiochemicalresponsesofbrackishwaterclamcorbiculajaponicaunderglobalwarmingconditionswatertemperaturesalinityandfoodavailability
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Physiological and biochemical responses of brackish-water clam Corbicula japonica under global-warming conditions: Water temperature, salinity, and food availability

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