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Advantages in the usage of microencapsulated diets in ex situ aquaculture of Montipora digitata

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Resumo:Coral reefs are under serious threat due to global climate change. In addition to the negative impact of several environmental factors, the marine aquarium trade for ornamental and research purposes causes even more pressure on these ecosystems. Ex-situ aquaculture rises as a potential solution for the high coral demand but still needs more studies to improve its production and quality. In this study we evaluated the advantages of microencapsulated diets in the ex-situ aquaculture of Montipora digitata (Subclass Hexacorallia; Order Scleractinia). We evaluated the microencapsulated diets’ effect on survival, growth, energy consumption, energy reserves and photobiology. After fragmentation of a single colony, 80 fragments were obtained and acclimated for 5 months in an autotrophic diet regime. After that we distributed the coral fragments in four treatments: control (autotrophic diet), phytoplankton microencapsulated diet, fish and squid meal microencapsulated diet and Artemia microencapsulated diet. Corals were fed twice per week (0.585 mg/L) for 80 days. After the experiment no coral mortality was registered. The corals fed with fish and squid meal microencapsulated diet showed the best results in growth. Regarding energy reserves and energy consumption, the non-fed corals showed the best results. All microencapsulated diets showed positive results on coral growth, except the Artemia microencapsulated diet.
Autores principais:Seabra, Pedro Miguel da Silva Soares Pinto de
Assunto:Aquaculture Microencapsulated diets Growth Energy reserves Montipora digitata
Ano:2021
País:Portugal
Tipo de documento:dissertação de mestrado
Tipo de acesso:acesso aberto
Instituição associada:Universidade de Aveiro
Idioma:inglês
Origem:RIA - Repositório Institucional da Universidade de Aveiro

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