Integrative indices for health assessment in reef corals under thermal stress

Autor: Carolina Madeira, Raúl Gouveia, Nadia Jogee, Catarina Vinagre, Henrique N. Cabral, Marta Dias, Mário Diniz, Ana I.M.C. Lobo Ferreira
Přispěvatelé: UCIBIO - Applied Molecular Biosciences Unit, DQ - Departamento de Química, Marine and Environmental Sciences Centre [Portugal] (MARE), Instituto Universitário de Ciências Psicológicas, Sociais e da Vida (ISPA), Unidade de Ciencias Biomoleculares Aplicadas (UCIBIO), Requimte, Departamento de Química (DQ), Faculdade de Ciências e Tecnologia = School of Science & Technology (FCT NOVA), Universidade Nova de Lisboa = NOVA University Lisbon (NOVA)-Universidade Nova de Lisboa = NOVA University Lisbon (NOVA)-Faculdade de Ciências e Tecnologia = School of Science & Technology (FCT NOVA), Universidade Nova de Lisboa = NOVA University Lisbon (NOVA)-Universidade Nova de Lisboa = NOVA University Lisbon (NOVA)-Universidade do Porto-Departamento de Química (DQ), Universidade Nova de Lisboa = NOVA University Lisbon (NOVA)-Universidade Nova de Lisboa = NOVA University Lisbon (NOVA)-Universidade do Porto, University of Edinburgh, OCEANARIO DE LISBOA PRT, Partenaires IRSTEA, Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA), Ecosystèmes aquatiques et changements globaux (UR EABX), Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Portuguese Fundação para a Ciência e Tecnologia (FCT) through the WarmingWebs project, PTDC/MAR-EST/2141/2012, the strategic projects Pest UID/MAR/ 04292/2019 and UID/Multi/04378/2019, the PhD research grant SFRH/BD/103047/2014 awarded to M. Dias and the FCT research position awarded to C. Vinagre.
Rok vydání: 2020
Předmět:
Zdroj: Repositório Científico de Acesso Aberto de Portugal
Repositório Científico de Acesso Aberto de Portugal (RCAAP)
instacron:RCAAP
Ecological Indicators
Ecological Indicators, Elsevier, 2020, 113, pp.106230. ⟨10.1016/j.ecolind.2020.106230⟩
ISSN: 1470-160X
Popis: UID/MAR/04292/2019 UID/Multi/04378/2019 SFRH/BD/103047/2014 Global warming is one of the major causes of reef coral ecosystems’ degradation. Predictions of further rise in sea surface temperatures call for urgent action. In this study, a holistic method for bio-monitoring heat stress in reef ecosystems was tested and optimized. Long-term induction of antioxidant enzymes and oxidative stress by elevated temperatures (30 °C and 32 °C) was assessed on fragments of reef-building corals and compared to control conditions (26 °C). The quantification of both oxidative stress, through lipid peroxidation (LPO) levels, and antioxidant enzyme activities: superoxide dismutase (SOD), catalase (CAT), and glutathione S-transferase (GST) in a long-term experiment (60 days), using seven Indo-Pacific reef-building coral species, provided useful information that was interpreted in combination with the observed partial mortality and growth rate of these organisms. These biomarkers were combined in integrated biomarker response (IBR) indices, either in an antioxidant defense mechanisms and oxidative stress response category (approach A: GST, CAT, LPO, and SOD) or in an integrated stress response category – organism performance (approach B: GST, CAT, LPO, SOD, partial mortality, and growth rate). The results of this study indicate that the IBRs were responsive to temperature treatment and dependent on the coral species. The approach B was the most adequate since it better reflected the stress suffered by the tested species, whereas the set of four biochemical biomarkers (approach A) was not enough to explain the organismal response of most of the tested species to thermal stress conditions. publishersversion published
Databáze: OpenAIRE
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