Preliminary Results on Light Conditions Manipulation in Octopus vulgaris (Cuvier, 1797) Paralarval Rearing
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 dif...
| Main Authors: | , , , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2017-11-01
|
| Series: | Fishes |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2410-3888/2/4/21 |
| _version_ | 1818480784409886720 |
|---|---|
| author | Diego Garrido Diana B. Reis Diego Orol Rui A. Gonçalves M. Virginia Martín António V. Sykes Covadonga Rodríguez Beatriz C. Felipe Xiaodong Zheng Luis Lagos Eduardo Almansa |
| author_facet | Diego Garrido Diana B. Reis Diego Orol Rui A. Gonçalves M. Virginia Martín António V. Sykes Covadonga Rodríguez Beatriz C. Felipe Xiaodong Zheng Luis Lagos Eduardo Almansa |
| author_sort | Diego Garrido |
| collection | DOAJ |
| 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. |
| first_indexed | 2024-12-10T11:26:56Z |
| format | Article |
| id | doaj.art-b44d6836d4744878b4f95f6967a77825 |
| institution | Directory Open Access Journal |
| issn | 2410-3888 |
| language | English |
| last_indexed | 2024-12-10T11:26:56Z |
| publishDate | 2017-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Fishes |
| spelling | doaj.art-b44d6836d4744878b4f95f6967a778252022-12-22T01:50:43ZengMDPI AGFishes2410-38882017-11-01242110.3390/fishes2040021fishes2040021Preliminary Results on Light Conditions Manipulation in Octopus vulgaris (Cuvier, 1797) Paralarval RearingDiego Garrido0Diana B. Reis1Diego Orol2Rui A. Gonçalves3M. Virginia Martín4António V. Sykes5Covadonga Rodríguez6Beatriz C. Felipe7Xiaodong Zheng8Luis Lagos9Eduardo Almansa10Centro Oceanográfico de Canarias, IEO, Vía Espaldón, Dársena Pesquera, Parcela 8, 38180 Santa Cruz de Tenerife, SpainCCMAR, Centro de Ciências do Mar, Universidade do Algarve, 8005-139 Faro, PortugalUniversidad de La Laguna, Faculty of Sciences, Biology Section, 38206 San Cristóbal de La Laguna, SpainCCMAR, Centro de Ciências do Mar, Universidade do Algarve, 8005-139 Faro, PortugalCentro Oceanográfico de Canarias, IEO, Vía Espaldón, Dársena Pesquera, Parcela 8, 38180 Santa Cruz de Tenerife, SpainCCMAR, Centro de Ciências do Mar, Universidade do Algarve, 8005-139 Faro, PortugalUniversidad de La Laguna, Faculty of Sciences, Biology Section, 38206 San Cristóbal de La Laguna, SpainCentro Oceanográfico de Canarias, IEO, Vía Espaldón, Dársena Pesquera, Parcela 8, 38180 Santa Cruz de Tenerife, SpainFisheries College, Ocean University of China, Qingdao 266003, ChinaAZTI, Txatxarramendi Ugartea z/g, 48395 Sukarrieta (Bizkaia), SpainCentro Oceanográfico de Canarias, IEO, Vía Espaldón, Dársena Pesquera, Parcela 8, 38180 Santa Cruz de Tenerife, SpainHigh 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.https://www.mdpi.com/2410-3888/2/4/21blue filterOctopus vulgarisparalarvae rearingpolarized lightreflection light |
| spellingShingle | Diego Garrido Diana B. Reis Diego Orol Rui A. Gonçalves M. Virginia Martín António V. Sykes Covadonga Rodríguez Beatriz C. Felipe Xiaodong Zheng Luis Lagos Eduardo Almansa Preliminary Results on Light Conditions Manipulation in Octopus vulgaris (Cuvier, 1797) Paralarval Rearing Fishes blue filter Octopus vulgaris paralarvae rearing polarized light reflection light |
| title | 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_short | 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 |
| topic | blue filter Octopus vulgaris paralarvae rearing polarized light reflection light |
| url | https://www.mdpi.com/2410-3888/2/4/21 |
| work_keys_str_mv | AT diegogarrido preliminaryresultsonlightconditionsmanipulationinoctopusvulgariscuvier1797paralarvalrearing AT dianabreis preliminaryresultsonlightconditionsmanipulationinoctopusvulgariscuvier1797paralarvalrearing AT diegoorol preliminaryresultsonlightconditionsmanipulationinoctopusvulgariscuvier1797paralarvalrearing AT ruiagoncalves preliminaryresultsonlightconditionsmanipulationinoctopusvulgariscuvier1797paralarvalrearing AT mvirginiamartin preliminaryresultsonlightconditionsmanipulationinoctopusvulgariscuvier1797paralarvalrearing AT antoniovsykes preliminaryresultsonlightconditionsmanipulationinoctopusvulgariscuvier1797paralarvalrearing AT covadongarodriguez preliminaryresultsonlightconditionsmanipulationinoctopusvulgariscuvier1797paralarvalrearing AT beatrizcfelipe preliminaryresultsonlightconditionsmanipulationinoctopusvulgariscuvier1797paralarvalrearing AT xiaodongzheng preliminaryresultsonlightconditionsmanipulationinoctopusvulgariscuvier1797paralarvalrearing AT luislagos preliminaryresultsonlightconditionsmanipulationinoctopusvulgariscuvier1797paralarvalrearing AT eduardoalmansa preliminaryresultsonlightconditionsmanipulationinoctopusvulgariscuvier1797paralarvalrearing |