Pirarucu larviculture in green water provides heavier fish and modulates locomotor activity
Autor(a) principal: | |
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Data de Publicação: | 2022 |
Outros Autores: | , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Acta Amazonica |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672022000200114 |
Resumo: | ABSTRACT The green water technique uses microalgae in the water of indoor larviculture, providing a darker environment to favor fish growth, welfare and health. We evaluated growth performance and locomotor activity after light exposure of pirarucu (Arapaima gigas) larvae reared in green or clear water. During one test, pirarucu larvae (3.6 ± 0.3 cm; 0.36 ± 0.1 g) were reared in 50-L circular tanks (n = 3 per treatment, 50 larvae per tank) in a static system containing green water [microalgae (w3algae; Bernaqua® 10 g m-3) added] or clear water (control). Fish weaning was achieved by co-feeding with Artemia nauplii and microdiets for seven days until full microdiet substitution. Larvae were biometrically evaluated on days 10, 17 and 24 to assess growth performance. In a second test, the locomotor activity of the larvae was analyzed before and after light exposure (1400 ± 60 lx) for 48 h according to an ethogram. After 24 days, the larvae reared in the green water were significantly heavier than those from the clear water, and displayed significantly fewer circular swimming movements. Body cortisol increased in both groups after light exposure. The microalgae provided an additional food source for larvae, with positive impact on growth until day 17 of larviculture. Green water can be a strategy to achieve better results in pirarucu larviculture, especially during and up to 10 days after the co-feeding period. |
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Pirarucu larviculture in green water provides heavier fish and modulates locomotor activityArapaima gigasbody cortisollight exposuremicroalgaeABSTRACT The green water technique uses microalgae in the water of indoor larviculture, providing a darker environment to favor fish growth, welfare and health. We evaluated growth performance and locomotor activity after light exposure of pirarucu (Arapaima gigas) larvae reared in green or clear water. During one test, pirarucu larvae (3.6 ± 0.3 cm; 0.36 ± 0.1 g) were reared in 50-L circular tanks (n = 3 per treatment, 50 larvae per tank) in a static system containing green water [microalgae (w3algae; Bernaqua® 10 g m-3) added] or clear water (control). Fish weaning was achieved by co-feeding with Artemia nauplii and microdiets for seven days until full microdiet substitution. Larvae were biometrically evaluated on days 10, 17 and 24 to assess growth performance. In a second test, the locomotor activity of the larvae was analyzed before and after light exposure (1400 ± 60 lx) for 48 h according to an ethogram. After 24 days, the larvae reared in the green water were significantly heavier than those from the clear water, and displayed significantly fewer circular swimming movements. Body cortisol increased in both groups after light exposure. The microalgae provided an additional food source for larvae, with positive impact on growth until day 17 of larviculture. Green water can be a strategy to achieve better results in pirarucu larviculture, especially during and up to 10 days after the co-feeding period.Instituto Nacional de Pesquisas da Amazônia2022-04-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672022000200114Acta Amazonica v.52 n.2 2022reponame:Acta Amazonicainstname:Instituto Nacional de Pesquisas da Amazônia (INPA)instacron:INPA10.1590/1809-4392202100932info:eu-repo/semantics/openAccessDANTAS,Francisco de MatosSANTANA,Thiago MacedoKOJIMA,Juliana TomomiFONSECA,Flávio Augusto Leão daLOPES,Ana Caroliny CerdeiraCARVALHO,Thaís BillalbaGONÇALVES,Ligia Uribeeng2022-06-30T00:00:00Zoai:scielo:S0044-59672022000200114Revistahttps://acta.inpa.gov.br/PUBhttps://old.scielo.br/oai/scielo-oai.phpacta@inpa.gov.br||acta@inpa.gov.br1809-43920044-5967opendoar:2022-06-30T00:00Acta Amazonica - Instituto Nacional de Pesquisas da Amazônia (INPA)false |
dc.title.none.fl_str_mv |
Pirarucu larviculture in green water provides heavier fish and modulates locomotor activity |
title |
Pirarucu larviculture in green water provides heavier fish and modulates locomotor activity |
spellingShingle |
Pirarucu larviculture in green water provides heavier fish and modulates locomotor activity DANTAS,Francisco de Matos Arapaima gigas body cortisol light exposure microalgae |
title_short |
Pirarucu larviculture in green water provides heavier fish and modulates locomotor activity |
title_full |
Pirarucu larviculture in green water provides heavier fish and modulates locomotor activity |
title_fullStr |
Pirarucu larviculture in green water provides heavier fish and modulates locomotor activity |
title_full_unstemmed |
Pirarucu larviculture in green water provides heavier fish and modulates locomotor activity |
title_sort |
Pirarucu larviculture in green water provides heavier fish and modulates locomotor activity |
author |
DANTAS,Francisco de Matos |
author_facet |
DANTAS,Francisco de Matos SANTANA,Thiago Macedo KOJIMA,Juliana Tomomi FONSECA,Flávio Augusto Leão da LOPES,Ana Caroliny Cerdeira CARVALHO,Thaís Billalba GONÇALVES,Ligia Uribe |
author_role |
author |
author2 |
SANTANA,Thiago Macedo KOJIMA,Juliana Tomomi FONSECA,Flávio Augusto Leão da LOPES,Ana Caroliny Cerdeira CARVALHO,Thaís Billalba GONÇALVES,Ligia Uribe |
author2_role |
author author author author author author |
dc.contributor.author.fl_str_mv |
DANTAS,Francisco de Matos SANTANA,Thiago Macedo KOJIMA,Juliana Tomomi FONSECA,Flávio Augusto Leão da LOPES,Ana Caroliny Cerdeira CARVALHO,Thaís Billalba GONÇALVES,Ligia Uribe |
dc.subject.por.fl_str_mv |
Arapaima gigas body cortisol light exposure microalgae |
topic |
Arapaima gigas body cortisol light exposure microalgae |
description |
ABSTRACT The green water technique uses microalgae in the water of indoor larviculture, providing a darker environment to favor fish growth, welfare and health. We evaluated growth performance and locomotor activity after light exposure of pirarucu (Arapaima gigas) larvae reared in green or clear water. During one test, pirarucu larvae (3.6 ± 0.3 cm; 0.36 ± 0.1 g) were reared in 50-L circular tanks (n = 3 per treatment, 50 larvae per tank) in a static system containing green water [microalgae (w3algae; Bernaqua® 10 g m-3) added] or clear water (control). Fish weaning was achieved by co-feeding with Artemia nauplii and microdiets for seven days until full microdiet substitution. Larvae were biometrically evaluated on days 10, 17 and 24 to assess growth performance. In a second test, the locomotor activity of the larvae was analyzed before and after light exposure (1400 ± 60 lx) for 48 h according to an ethogram. After 24 days, the larvae reared in the green water were significantly heavier than those from the clear water, and displayed significantly fewer circular swimming movements. Body cortisol increased in both groups after light exposure. The microalgae provided an additional food source for larvae, with positive impact on growth until day 17 of larviculture. Green water can be a strategy to achieve better results in pirarucu larviculture, especially during and up to 10 days after the co-feeding period. |
publishDate |
2022 |
dc.date.none.fl_str_mv |
2022-04-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672022000200114 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672022000200114 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/1809-4392202100932 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Instituto Nacional de Pesquisas da Amazônia |
publisher.none.fl_str_mv |
Instituto Nacional de Pesquisas da Amazônia |
dc.source.none.fl_str_mv |
Acta Amazonica v.52 n.2 2022 reponame:Acta Amazonica instname:Instituto Nacional de Pesquisas da Amazônia (INPA) instacron:INPA |
instname_str |
Instituto Nacional de Pesquisas da Amazônia (INPA) |
instacron_str |
INPA |
institution |
INPA |
reponame_str |
Acta Amazonica |
collection |
Acta Amazonica |
repository.name.fl_str_mv |
Acta Amazonica - Instituto Nacional de Pesquisas da Amazônia (INPA) |
repository.mail.fl_str_mv |
acta@inpa.gov.br||acta@inpa.gov.br |
_version_ |
1752129841579163648 |