Effects of photoperiod on reproduction of Siamese fighting fish Betta splendens
Autor(a) principal: | |
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Data de Publicação: | 2012 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1590/S1516-35982012000400001 http://hdl.handle.net/11449/488 |
Resumo: | This study investigated the effect of different photoperiods (24 h of light (L):0 h of darkness (D); 20L:4D; 16L:8D; 12L:12D; and 8L:16D) on the reproduction and growth of Betta splendens. The results showed that spawning frequency was significantly higher in couples reared under 16L:8D and 12L:12D, in comparison with other treatments. The highest number of eggs per spawn was obtained under 16L:8D (544.76±375.23) and 12L:12D (471.13±261.52), and the lowest values were detected for 24L:0D (128.55±58.14) and 20L:4D (187.87±103.84). Fertility and fecundity also showed significantly higher average values in 16L:8D and 12L:12D when compared with 24L:0D and 20L:4D treatments. Egg volume and perivitelline space were significantly higher in 24L:0D treatments that showed the lowest numbers of eggs per spawn, while the vitelline volume did not show significant differences. Other variables such as breeders weight gain and condition factor (K) were not statistically different. Moreover, the final length varies according to photoperiod and gender. These results demonstrated a key role for the photoperiod upon B. splendens reproduction. The best reproductive performance is achieved under the photoperiods that best approached those that occur in spring and summer (16L:8D and 12L:12D), coinciding with their best seasons for reproduction. |
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Repositório Institucional da UNESP |
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spelling |
Effects of photoperiod on reproduction of Siamese fighting fish Betta splendensegg productionfertilitylight regimenornamental fishThis study investigated the effect of different photoperiods (24 h of light (L):0 h of darkness (D); 20L:4D; 16L:8D; 12L:12D; and 8L:16D) on the reproduction and growth of Betta splendens. The results showed that spawning frequency was significantly higher in couples reared under 16L:8D and 12L:12D, in comparison with other treatments. The highest number of eggs per spawn was obtained under 16L:8D (544.76±375.23) and 12L:12D (471.13±261.52), and the lowest values were detected for 24L:0D (128.55±58.14) and 20L:4D (187.87±103.84). Fertility and fecundity also showed significantly higher average values in 16L:8D and 12L:12D when compared with 24L:0D and 20L:4D treatments. Egg volume and perivitelline space were significantly higher in 24L:0D treatments that showed the lowest numbers of eggs per spawn, while the vitelline volume did not show significant differences. Other variables such as breeders weight gain and condition factor (K) were not statistically different. Moreover, the final length varies according to photoperiod and gender. These results demonstrated a key role for the photoperiod upon B. splendens reproduction. The best reproductive performance is achieved under the photoperiods that best approached those that occur in spring and summer (16L:8D and 12L:12D), coinciding with their best seasons for reproduction.UNESPUNESPSociedade Brasileira de ZootecniaUniversidade Estadual Paulista (Unesp)Giannecchini, Luiz Gustavo [UNESP]Massago, Haluko [UNESP]Fernandes, João Batista Kochenborger [UNESP]2014-05-20T13:12:32Z2014-05-20T13:12:32Z2012-04-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article821-826application/pdfhttp://dx.doi.org/10.1590/S1516-35982012000400001Revista Brasileira de Zootecnia. Sociedade Brasileira de Zootecnia, v. 41, n. 4, p. 821-826, 2012.1516-3598http://hdl.handle.net/11449/48810.1590/S1516-35982012000400001S1516-35982012000400001WOS:000304542000001S1516-35982012000400001.pdfSciELOreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengRevista Brasileira de Zootecnia0,337info:eu-repo/semantics/openAccess2024-01-24T06:28:30Zoai:repositorio.unesp.br:11449/488Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-01-24T06:28:30Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Effects of photoperiod on reproduction of Siamese fighting fish Betta splendens |
title |
Effects of photoperiod on reproduction of Siamese fighting fish Betta splendens |
spellingShingle |
Effects of photoperiod on reproduction of Siamese fighting fish Betta splendens Giannecchini, Luiz Gustavo [UNESP] egg production fertility light regimen ornamental fish |
title_short |
Effects of photoperiod on reproduction of Siamese fighting fish Betta splendens |
title_full |
Effects of photoperiod on reproduction of Siamese fighting fish Betta splendens |
title_fullStr |
Effects of photoperiod on reproduction of Siamese fighting fish Betta splendens |
title_full_unstemmed |
Effects of photoperiod on reproduction of Siamese fighting fish Betta splendens |
title_sort |
Effects of photoperiod on reproduction of Siamese fighting fish Betta splendens |
author |
Giannecchini, Luiz Gustavo [UNESP] |
author_facet |
Giannecchini, Luiz Gustavo [UNESP] Massago, Haluko [UNESP] Fernandes, João Batista Kochenborger [UNESP] |
author_role |
author |
author2 |
Massago, Haluko [UNESP] Fernandes, João Batista Kochenborger [UNESP] |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Giannecchini, Luiz Gustavo [UNESP] Massago, Haluko [UNESP] Fernandes, João Batista Kochenborger [UNESP] |
dc.subject.por.fl_str_mv |
egg production fertility light regimen ornamental fish |
topic |
egg production fertility light regimen ornamental fish |
description |
This study investigated the effect of different photoperiods (24 h of light (L):0 h of darkness (D); 20L:4D; 16L:8D; 12L:12D; and 8L:16D) on the reproduction and growth of Betta splendens. The results showed that spawning frequency was significantly higher in couples reared under 16L:8D and 12L:12D, in comparison with other treatments. The highest number of eggs per spawn was obtained under 16L:8D (544.76±375.23) and 12L:12D (471.13±261.52), and the lowest values were detected for 24L:0D (128.55±58.14) and 20L:4D (187.87±103.84). Fertility and fecundity also showed significantly higher average values in 16L:8D and 12L:12D when compared with 24L:0D and 20L:4D treatments. Egg volume and perivitelline space were significantly higher in 24L:0D treatments that showed the lowest numbers of eggs per spawn, while the vitelline volume did not show significant differences. Other variables such as breeders weight gain and condition factor (K) were not statistically different. Moreover, the final length varies according to photoperiod and gender. These results demonstrated a key role for the photoperiod upon B. splendens reproduction. The best reproductive performance is achieved under the photoperiods that best approached those that occur in spring and summer (16L:8D and 12L:12D), coinciding with their best seasons for reproduction. |
publishDate |
2012 |
dc.date.none.fl_str_mv |
2012-04-01 2014-05-20T13:12:32Z 2014-05-20T13:12:32Z |
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://dx.doi.org/10.1590/S1516-35982012000400001 Revista Brasileira de Zootecnia. Sociedade Brasileira de Zootecnia, v. 41, n. 4, p. 821-826, 2012. 1516-3598 http://hdl.handle.net/11449/488 10.1590/S1516-35982012000400001 S1516-35982012000400001 WOS:000304542000001 S1516-35982012000400001.pdf |
url |
http://dx.doi.org/10.1590/S1516-35982012000400001 http://hdl.handle.net/11449/488 |
identifier_str_mv |
Revista Brasileira de Zootecnia. Sociedade Brasileira de Zootecnia, v. 41, n. 4, p. 821-826, 2012. 1516-3598 10.1590/S1516-35982012000400001 S1516-35982012000400001 WOS:000304542000001 S1516-35982012000400001.pdf |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Revista Brasileira de Zootecnia 0,337 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
821-826 application/pdf |
dc.publisher.none.fl_str_mv |
Sociedade Brasileira de Zootecnia |
publisher.none.fl_str_mv |
Sociedade Brasileira de Zootecnia |
dc.source.none.fl_str_mv |
SciELO reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1799965709981188096 |