Effect of marine heatwaves on the immune response of white seabream Diplodus sargus supplemented with macroalgae

Bibliographic Details
Main Author: Tavares, Sara Sofia Rosado
Publication Date: 2024
Format: Master thesis
Language: eng
Source: Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
Download full: http://hdl.handle.net/10400.5/97326
Summary: Tese de mestrado, Ecologia Marinha, 2024, Universidade de Lisboa, Faculdade de Ciências
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spelling Effect of marine heatwaves on the immune response of white seabream Diplodus sargus supplemented with macroalgaealterações climáticassuplementaçãoresposta imunemacroalgasonda de calor marinhaTeses de mestrado - 2024Departamento de Biologia AnimalTese de mestrado, Ecologia Marinha, 2024, Universidade de Lisboa, Faculdade de CiênciasThe frequency and intensity of marine heatwaves (MHWs) is increasing due to climate change, posing additional challenges to aquaculture, by compromising the resilience of marine organisms to other stressors, such as disease outbreaks. Therefore, eco-innovative adaptation strategies to improve farmed fish resilience are urgently needed. Macroalgae are rich in bioactive compounds with several biological activities and their potential as functional ingredients has recently attracted considerable interest. This study aimed to investigate the effects of dietary supplementation with Asparagopsis taxiformis on fitness, hematocrit levels and immune response of juvenile white seabream (Diplodus sargus) exposed to a MHW. Fish were fed four experimental diets (0%, 1.5%, 3% and 6% of dried powdered A. taxiformis) for 30 days (T30) and exposed to a category II (strong) MHW for 15 days (T52), followed by 8 days of recovery period (T59). Results showed that A. taxiformis supplementation had no effect on fish fitness and immune response after 30 days. After the MHW, peroxidase activity increased in fish supplemented with 1.5% A. taxiformis, while hematocrit levels decreased in all treatments. During the recovery period, the levels returned to normal, particularly in fish supplemented with A. taxiformis. In addition, immunoglobulin M content and peroxidase activity showed a dose-dependent response to supplementation, indicating that 1.5% was the most effective level. These findings confirm that A. taxiformis is a promising functional ingredient, particularly in a climate change context, by effectively mitigating the adverse effects elicited by thermal stress.Rosa, Rui Afonso Bairrão da, 1976-Maulvault, Ana Luísa Marques Paixão de CarvalhoRepositório da Universidade de LisboaTavares, Sara Sofia Rosado202420242025-12-30T00:00:00Z2024-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisapplication/pdfhttp://hdl.handle.net/10400.5/97326enginfo:eu-repo/semantics/embargoedAccessreponame:Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)instname:FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologiainstacron:RCAAP2025-03-17T16:32:11Zoai:repositorio.ulisboa.pt:10400.5/97326Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireinfo@rcaap.ptopendoar:https://opendoar.ac.uk/repository/71602025-05-29T04:18:31.345378Repositórios Científicos de Acesso Aberto de Portugal (RCAAP) - FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologiafalse
dc.title.none.fl_str_mv Effect of marine heatwaves on the immune response of white seabream Diplodus sargus supplemented with macroalgae
title Effect of marine heatwaves on the immune response of white seabream Diplodus sargus supplemented with macroalgae
spellingShingle Effect of marine heatwaves on the immune response of white seabream Diplodus sargus supplemented with macroalgae
Tavares, Sara Sofia Rosado
alterações climáticas
suplementação
resposta imune
macroalgas
onda de calor marinha
Teses de mestrado - 2024
Departamento de Biologia Animal
title_short Effect of marine heatwaves on the immune response of white seabream Diplodus sargus supplemented with macroalgae
title_full Effect of marine heatwaves on the immune response of white seabream Diplodus sargus supplemented with macroalgae
title_fullStr Effect of marine heatwaves on the immune response of white seabream Diplodus sargus supplemented with macroalgae
title_full_unstemmed Effect of marine heatwaves on the immune response of white seabream Diplodus sargus supplemented with macroalgae
title_sort Effect of marine heatwaves on the immune response of white seabream Diplodus sargus supplemented with macroalgae
author Tavares, Sara Sofia Rosado
author_facet Tavares, Sara Sofia Rosado
author_role author
dc.contributor.none.fl_str_mv Rosa, Rui Afonso Bairrão da, 1976-
Maulvault, Ana Luísa Marques Paixão de Carvalho
Repositório da Universidade de Lisboa
dc.contributor.author.fl_str_mv Tavares, Sara Sofia Rosado
dc.subject.por.fl_str_mv alterações climáticas
suplementação
resposta imune
macroalgas
onda de calor marinha
Teses de mestrado - 2024
Departamento de Biologia Animal
topic alterações climáticas
suplementação
resposta imune
macroalgas
onda de calor marinha
Teses de mestrado - 2024
Departamento de Biologia Animal
description Tese de mestrado, Ecologia Marinha, 2024, Universidade de Lisboa, Faculdade de Ciências
publishDate 2024
dc.date.none.fl_str_mv 2024
2024
2024-01-01T00:00:00Z
2025-12-30T00:00:00Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/masterThesis
format masterThesis
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10400.5/97326
url http://hdl.handle.net/10400.5/97326
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.fl_str_mv info:eu-repo/semantics/embargoedAccess
eu_rights_str_mv embargoedAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
instname:FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologia
instacron:RCAAP
instname_str FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologia
instacron_str RCAAP
institution RCAAP
reponame_str Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
collection Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
repository.name.fl_str_mv Repositórios Científicos de Acesso Aberto de Portugal (RCAAP) - FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologia
repository.mail.fl_str_mv info@rcaap.pt
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