Preliminary results on light conditions manipulation in Octopus vulgaris (Cuvier, 1797) paralarval rearing
Autor(a) principal: | |
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Data de Publicação: | 2017 |
Outros Autores: | , , , , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10400.1/10912 |
Resumo: | High paralarvae mortality is a major bottleneck currently hindering the control over the lifecycle of common octopus (Octopus vulgaris Cuvier, 1797). It is believed that this problem might be related to either zoo-technical and/or nutritional aspects. The present paper is focused on the study of different zoo-technical aspects related to light conditions on the rearing of paralarvae, including the effects of polarization in prey ingestion, the use of a blue filter to simulate natural conditions, and the use of focused light to avoid reflections of the rearing tank’s walls. In the first experiment, O. vulgaris paralarvae ingestion of Artemia sp. and copepods (Tisbe sp.) was assessed under either normal or polarized light. In the second experiment, the effect of a blue filter with natural light or focused artificial light on growth and mortality was assessed over 15 days of rearing. Ingestion rate was not influenced by light polarization. Nonetheless, a significantly higher ingestion of Artemia sp. with respect to copepods was observed. The blue filter promoted the use of natural light conditions in Octopus paralarval culture, while focused light reduced the collision of the paralarvae against the walls. However, no significant differences were found in paralarval growth nor survival. |
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Preliminary results on light conditions manipulation in Octopus vulgaris (Cuvier, 1797) paralarval rearingBlue filterOctopus vulgarisParalarvae rearingPolarized lightReflection lightHigh paralarvae mortality is a major bottleneck currently hindering the control over the lifecycle of common octopus (Octopus vulgaris Cuvier, 1797). It is believed that this problem might be related to either zoo-technical and/or nutritional aspects. The present paper is focused on the study of different zoo-technical aspects related to light conditions on the rearing of paralarvae, including the effects of polarization in prey ingestion, the use of a blue filter to simulate natural conditions, and the use of focused light to avoid reflections of the rearing tank’s walls. In the first experiment, O. vulgaris paralarvae ingestion of Artemia sp. and copepods (Tisbe sp.) was assessed under either normal or polarized light. In the second experiment, the effect of a blue filter with natural light or focused artificial light on growth and mortality was assessed over 15 days of rearing. Ingestion rate was not influenced by light polarization. Nonetheless, a significantly higher ingestion of Artemia sp. with respect to copepods was observed. The blue filter promoted the use of natural light conditions in Octopus paralarval culture, while focused light reduced the collision of the paralarvae against the walls. However, no significant differences were found in paralarval growth nor survival.MDPISapientiaGarrido, DiegoReis, DianaOrol, DiegoGonçalves, Rui A.Martín, M.Sykes, António V.Rodríguez, CovadongaFelipe, BeatrizZheng, XiaodongLagos, LuisAlmansa, Eduardo2018-11-07T17:40:32Z20172017-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.1/10912eng2410-388810.3390/fishes2040021info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-07-24T10:22:37Zoai:sapientia.ualg.pt:10400.1/10912Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T20:02:28.991781Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Preliminary results on light conditions manipulation in Octopus vulgaris (Cuvier, 1797) paralarval rearing |
title |
Preliminary results on light conditions manipulation in Octopus vulgaris (Cuvier, 1797) paralarval rearing |
spellingShingle |
Preliminary results on light conditions manipulation in Octopus vulgaris (Cuvier, 1797) paralarval rearing Garrido, Diego Blue filter Octopus vulgaris Paralarvae rearing Polarized light Reflection light |
title_short |
Preliminary results on light conditions manipulation in Octopus vulgaris (Cuvier, 1797) paralarval rearing |
title_full |
Preliminary results on light conditions manipulation in Octopus vulgaris (Cuvier, 1797) paralarval rearing |
title_fullStr |
Preliminary results on light conditions manipulation in Octopus vulgaris (Cuvier, 1797) paralarval rearing |
title_full_unstemmed |
Preliminary results on light conditions manipulation in Octopus vulgaris (Cuvier, 1797) paralarval rearing |
title_sort |
Preliminary results on light conditions manipulation in Octopus vulgaris (Cuvier, 1797) paralarval rearing |
author |
Garrido, Diego |
author_facet |
Garrido, Diego Reis, Diana Orol, Diego Gonçalves, Rui A. Martín, M. Sykes, António V. Rodríguez, Covadonga Felipe, Beatriz Zheng, Xiaodong Lagos, Luis Almansa, Eduardo |
author_role |
author |
author2 |
Reis, Diana Orol, Diego Gonçalves, Rui A. Martín, M. Sykes, António V. Rodríguez, Covadonga Felipe, Beatriz Zheng, Xiaodong Lagos, Luis Almansa, Eduardo |
author2_role |
author author author author author author author author author author |
dc.contributor.none.fl_str_mv |
Sapientia |
dc.contributor.author.fl_str_mv |
Garrido, Diego Reis, Diana Orol, Diego Gonçalves, Rui A. Martín, M. Sykes, António V. Rodríguez, Covadonga Felipe, Beatriz Zheng, Xiaodong Lagos, Luis Almansa, Eduardo |
dc.subject.por.fl_str_mv |
Blue filter Octopus vulgaris Paralarvae rearing Polarized light Reflection light |
topic |
Blue filter Octopus vulgaris Paralarvae rearing Polarized light Reflection light |
description |
High paralarvae mortality is a major bottleneck currently hindering the control over the lifecycle of common octopus (Octopus vulgaris Cuvier, 1797). It is believed that this problem might be related to either zoo-technical and/or nutritional aspects. The present paper is focused on the study of different zoo-technical aspects related to light conditions on the rearing of paralarvae, including the effects of polarization in prey ingestion, the use of a blue filter to simulate natural conditions, and the use of focused light to avoid reflections of the rearing tank’s walls. In the first experiment, O. vulgaris paralarvae ingestion of Artemia sp. and copepods (Tisbe sp.) was assessed under either normal or polarized light. In the second experiment, the effect of a blue filter with natural light or focused artificial light on growth and mortality was assessed over 15 days of rearing. Ingestion rate was not influenced by light polarization. Nonetheless, a significantly higher ingestion of Artemia sp. with respect to copepods was observed. The blue filter promoted the use of natural light conditions in Octopus paralarval culture, while focused light reduced the collision of the paralarvae against the walls. However, no significant differences were found in paralarval growth nor survival. |
publishDate |
2017 |
dc.date.none.fl_str_mv |
2017 2017-01-01T00:00:00Z 2018-11-07T17:40:32Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10400.1/10912 |
url |
http://hdl.handle.net/10400.1/10912 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
2410-3888 10.3390/fishes2040021 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
MDPI |
publisher.none.fl_str_mv |
MDPI |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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1799133258558996480 |