Publicação
Advantages in the usage of microencapsulated diets in ex situ aquaculture of Montipora digitata
| 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 |
| _version_ | 1866173048913133568 |
|---|---|
| author | Seabra, Pedro Miguel da Silva Soares Pinto de |
| author_facet | Seabra, Pedro Miguel da Silva Soares Pinto de |
| author_role | author |
| country_str | PT |
| creators_json_txt | [{\"Person.name\":\"Seabra, Pedro Miguel da Silva Soares Pinto de\"}] |
| datacite.creators.creator.creatorName.fl_str_mv | Seabra, Pedro Miguel da Silva Soares Pinto de |
| datacite.date.Accepted.fl_str_mv | 2021-12-14T00:00:00Z |
| datacite.date.available.fl_str_mv | 2022-03-17T15:53:38Z |
| datacite.date.embargoed.fl_str_mv | 2022-03-17T15:53:38Z |
| datacite.rights.fl_str_mv | http://purl.org/coar/access_right/c_abf2 |
| datacite.subjects.subject.fl_str_mv | Aquaculture Microencapsulated diets Growth Energy reserves Montipora digitata |
| datacite.titles.title.fl_str_mv | Advantages in the usage of microencapsulated diets in ex situ aquaculture of Montipora digitata |
| dc.creator.none.fl_str_mv | Seabra, Pedro Miguel da Silva Soares Pinto de |
| dc.date.Accepted.fl_str_mv | 2021-12-14T00:00:00Z |
| dc.date.available.fl_str_mv | 2022-03-17T15:53:38Z |
| dc.date.embargoed.fl_str_mv | 2022-03-17T15:53:38Z |
| dc.description.none.fl_str_mv | Os recifes de coral encontram-se sob forte ameaça devido às alterações climáticas globais, podendo perder irremediavelmente a sua biodiversidade num futuro próximo. Para além dos fatores ambientais, a crescente procura destes organismos para fins ornamentais e de investigação científica coloca ainda mais pressão sobre estes ecossistemas já fragilizados. A aquacultura de corais surge como uma potencial solução para a elevada procura de corais duros e moles, mas necessita de estudos para que seja otimizada e rentável. Neste estudo foram avaliadas as vantagens da utilização de dietas microencapsuladas no cultivo ex-situ da espécie de coral duro Montipora digitata (Subclasse Hexacorallia; Ordem Scleractinia). Os parâmetros avaliados foram a sobrevivência, o crescimento, o consumo de energia, as reservas energéticas e a fotobiologia dos corais. A partir de uma colónia mãe foram obtidos 80 fragmentos, posteriormente colocados em aclimatização sem adição de dietas microencapsuladas durante 5 meses. Após o período de aclimatização foram divididos por quatro aquários com diferentes dietas: controlo (dieta autotrófica), dieta microencapsulada à base de fitoplâncton, dieta microencapsulada à base de peixe e lula e dieta microencapsulada à base de Artemia. Os corais foram alimentados duas vezes por semana (0,585 mg/L) durante 80 dias. Durante toda a experiência não ocorreu mortalidade. Os corais alimentados com a dieta microencapsulada à base de peixe e lula demonstraram os melhores resultados em termos de crescimento. Relativamente aos parâmetros energéticos, os corais cultivados com dieta autotrófica mostraram os melhores resultados. De uma forma geral, as dietas microencapsuladas mostraram ser adequadas e vantajosas para o cultivo desta espécie, à exceção da dieta microencapsulada à base de Artemia. |
| dc.format.none.fl_str_mv | application/pdf |
| dc.identifier.none.fl_str_mv | http://hdl.handle.net/10773/33535 |
| dc.language.none.fl_str_mv | eng |
| dc.rights.none.fl_str_mv | http://purl.org/coar/access_right/c_abf2 |
| dc.subject.none.fl_str_mv | Aquaculture Microencapsulated diets Growth Energy reserves Montipora digitata |
| dc.title.fl_str_mv | Advantages in the usage of microencapsulated diets in ex situ aquaculture of Montipora digitata |
| dc.type.none.fl_str_mv | http://purl.org/coar/resource_type/c_bdcc |
| description | 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. |
| dirty | 0 |
| eu_rights_str_mv | openAccess |
| format | masterThesis |
| id | ria_b4a3f49cf7dbcd3ddd43eefda14e8b3c |
| identifier.url.fl_str_mv | http://hdl.handle.net/10773/33535 |
| instacron_str | ua |
| institution | Universidade de Aveiro |
| instname_str | Universidade de Aveiro |
| language | eng |
| network_acronym_str | ria |
| network_name_str | RIA - Repositório Institucional da Universidade de Aveiro |
| oai_identifier_str | oai:ria.ua.pt:10773/33535 |
| organization_str_mv | urn:organizationAcronym:ua |
| person_str_mv | Seabra, Pedro Miguel da Silva Soares Pinto de |
| publishDate | 2021 |
| reponame_str | RIA - Repositório Institucional da Universidade de Aveiro |
| repository_id_str | urn:repositoryAcronym:ria |
| service_str_mv | urn:repositoryAcronym:ria |
| spelling | pt_PTCoral 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.pt_PTOs recifes de coral encontram-se sob forte ameaça devido às alterações climáticas globais, podendo perder irremediavelmente a sua biodiversidade num futuro próximo. Para além dos fatores ambientais, a crescente procura destes organismos para fins ornamentais e de investigação científica coloca ainda mais pressão sobre estes ecossistemas já fragilizados. A aquacultura de corais surge como uma potencial solução para a elevada procura de corais duros e moles, mas necessita de estudos para que seja otimizada e rentável. Neste estudo foram avaliadas as vantagens da utilização de dietas microencapsuladas no cultivo ex-situ da espécie de coral duro Montipora digitata (Subclasse Hexacorallia; Ordem Scleractinia). Os parâmetros avaliados foram a sobrevivência, o crescimento, o consumo de energia, as reservas energéticas e a fotobiologia dos corais. A partir de uma colónia mãe foram obtidos 80 fragmentos, posteriormente colocados em aclimatização sem adição de dietas microencapsuladas durante 5 meses. Após o período de aclimatização foram divididos por quatro aquários com diferentes dietas: controlo (dieta autotrófica), dieta microencapsulada à base de fitoplâncton, dieta microencapsulada à base de peixe e lula e dieta microencapsulada à base de Artemia. Os corais foram alimentados duas vezes por semana (0,585 mg/L) durante 80 dias. Durante toda a experiência não ocorreu mortalidade. Os corais alimentados com a dieta microencapsulada à base de peixe e lula demonstraram os melhores resultados em termos de crescimento. Relativamente aos parâmetros energéticos, os corais cultivados com dieta autotrófica mostraram os melhores resultados. De uma forma geral, as dietas microencapsuladas mostraram ser adequadas e vantajosas para o cultivo desta espécie, à exceção da dieta microencapsulada à base de Artemia.application/pdfengpt_PTAdvantages in the usage of microencapsulated diets in ex situ aquaculture of Montipora digitataSeabra, Pedro Miguel da Silva Soares Pinto deHandlehttp://hdl.handle.net/10773/335352022-03-17T15:53:38Z2021-12-14T00:00:00Z2021-12-14http://purl.org/coar/access_right/c_abf2open accesspt_PTAquaculturept_PTMicroencapsulated dietspt_PTGrowthpt_PTEnergy reservespt_PTMontipora digitata533140 byteshttp://purl.org/coar/access_right/c_abf2application/pdffulltexthttps://ria.ua.pt/bitstream/10773/33535/1/Documento_Pedro_Seabra.pdfother research producthttp://purl.org/coar/resource_type/c_bdccmaster thesis |
| spellingShingle | Advantages in the usage of microencapsulated diets in ex situ aquaculture of Montipora digitata Seabra, Pedro Miguel da Silva Soares Pinto de Aquaculture Microencapsulated diets Growth Energy reserves Montipora digitata |
| status | SINGLETON |
| subject.fl_str_mv | Aquaculture Microencapsulated diets Growth Energy reserves Montipora digitata |
| title | Advantages in the usage of microencapsulated diets in ex situ aquaculture of Montipora digitata |
| title_full | Advantages in the usage of microencapsulated diets in ex situ aquaculture of Montipora digitata |
| title_fullStr | Advantages in the usage of microencapsulated diets in ex situ aquaculture of Montipora digitata |
| title_full_unstemmed | Advantages in the usage of microencapsulated diets in ex situ aquaculture of Montipora digitata |
| title_short | Advantages in the usage of microencapsulated diets in ex situ aquaculture of Montipora digitata |
| title_sort | Advantages in the usage of microencapsulated diets in ex situ aquaculture of Montipora digitata |
| topic | Aquaculture Microencapsulated diets Growth Energy reserves Montipora digitata |
| topic_facet | Aquaculture Microencapsulated diets Growth Energy reserves Montipora digitata |
| url | http://hdl.handle.net/10773/33535 |
| visible | 1 |