Growth hormone on ovarian morphology of lambaris (Astyanax bimaculatus) after induced spawning

Detalhes bibliográficos
Autor(a) principal: Marcon,Lucas
Data de Publicação: 2019
Outros Autores: Freitas,Vivian Rocha, Bazzoli,Nilo, Rizzo,Elizete, Benjamin,Laércio dos Anjos
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Ciência Rural
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782019000800651
Resumo: ABSTRACT: Lambari, Astyanax bimaculatus, is an oviparous, multiple-spawning fish that is reproductively active throughout the year, which makes it promising for cultivation and research. This research histologically evaluates the ovaries of lambari that have undergone artificial spawning induced with pituitary extract (control group), and the effect of growth hormone at a dose of 2 mg/g body weight (treatment group) on the subsequent process of ovarian recovery. Ovaries of fish in both the control and treatments groups were collected at 120 hours after spawning and analyzed using optical microscopy to characterize the average quantities of: follicles in different stages of development, post-ovulatory follicles, follicular atresia and granulocytes. Quantity and morphology of early and advanced primary follicles did not differ between the treatment and control groups; an important and necessary factor for ovarian recovery for subsequent spawning. There was a greater amount of granulocytes in initial atresia in the group treated with growth hormone. These results demonstrated that the administration of growth hormone may potentiate the process of ovarian recovery after induced spawning.
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spelling Growth hormone on ovarian morphology of lambaris (Astyanax bimaculatus) after induced spawningatresiagranulocytespost-ovulatory folliclesfreshwater fishesABSTRACT: Lambari, Astyanax bimaculatus, is an oviparous, multiple-spawning fish that is reproductively active throughout the year, which makes it promising for cultivation and research. This research histologically evaluates the ovaries of lambari that have undergone artificial spawning induced with pituitary extract (control group), and the effect of growth hormone at a dose of 2 mg/g body weight (treatment group) on the subsequent process of ovarian recovery. Ovaries of fish in both the control and treatments groups were collected at 120 hours after spawning and analyzed using optical microscopy to characterize the average quantities of: follicles in different stages of development, post-ovulatory follicles, follicular atresia and granulocytes. Quantity and morphology of early and advanced primary follicles did not differ between the treatment and control groups; an important and necessary factor for ovarian recovery for subsequent spawning. There was a greater amount of granulocytes in initial atresia in the group treated with growth hormone. These results demonstrated that the administration of growth hormone may potentiate the process of ovarian recovery after induced spawning.Universidade Federal de Santa Maria2019-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782019000800651Ciência Rural v.49 n.8 2019reponame:Ciência Ruralinstname:Universidade Federal de Santa Maria (UFSM)instacron:UFSM10.1590/0103-8478cr20180478info:eu-repo/semantics/openAccessMarcon,LucasFreitas,Vivian RochaBazzoli,NiloRizzo,ElizeteBenjamin,Laércio dos Anjoseng2019-09-30T00:00:00ZRevista
dc.title.none.fl_str_mv Growth hormone on ovarian morphology of lambaris (Astyanax bimaculatus) after induced spawning
title Growth hormone on ovarian morphology of lambaris (Astyanax bimaculatus) after induced spawning
spellingShingle Growth hormone on ovarian morphology of lambaris (Astyanax bimaculatus) after induced spawning
Marcon,Lucas
atresia
granulocytes
post-ovulatory follicles
freshwater fishes
title_short Growth hormone on ovarian morphology of lambaris (Astyanax bimaculatus) after induced spawning
title_full Growth hormone on ovarian morphology of lambaris (Astyanax bimaculatus) after induced spawning
title_fullStr Growth hormone on ovarian morphology of lambaris (Astyanax bimaculatus) after induced spawning
title_full_unstemmed Growth hormone on ovarian morphology of lambaris (Astyanax bimaculatus) after induced spawning
title_sort Growth hormone on ovarian morphology of lambaris (Astyanax bimaculatus) after induced spawning
author Marcon,Lucas
author_facet Marcon,Lucas
Freitas,Vivian Rocha
Bazzoli,Nilo
Rizzo,Elizete
Benjamin,Laércio dos Anjos
author_role author
author2 Freitas,Vivian Rocha
Bazzoli,Nilo
Rizzo,Elizete
Benjamin,Laércio dos Anjos
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Marcon,Lucas
Freitas,Vivian Rocha
Bazzoli,Nilo
Rizzo,Elizete
Benjamin,Laércio dos Anjos
dc.subject.por.fl_str_mv atresia
granulocytes
post-ovulatory follicles
freshwater fishes
topic atresia
granulocytes
post-ovulatory follicles
freshwater fishes
description ABSTRACT: Lambari, Astyanax bimaculatus, is an oviparous, multiple-spawning fish that is reproductively active throughout the year, which makes it promising for cultivation and research. This research histologically evaluates the ovaries of lambari that have undergone artificial spawning induced with pituitary extract (control group), and the effect of growth hormone at a dose of 2 mg/g body weight (treatment group) on the subsequent process of ovarian recovery. Ovaries of fish in both the control and treatments groups were collected at 120 hours after spawning and analyzed using optical microscopy to characterize the average quantities of: follicles in different stages of development, post-ovulatory follicles, follicular atresia and granulocytes. Quantity and morphology of early and advanced primary follicles did not differ between the treatment and control groups; an important and necessary factor for ovarian recovery for subsequent spawning. There was a greater amount of granulocytes in initial atresia in the group treated with growth hormone. These results demonstrated that the administration of growth hormone may potentiate the process of ovarian recovery after induced spawning.
publishDate 2019
dc.date.none.fl_str_mv 2019-01-01
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=S0103-84782019000800651
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782019000800651
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/0103-8478cr20180478
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 Universidade Federal de Santa Maria
publisher.none.fl_str_mv Universidade Federal de Santa Maria
dc.source.none.fl_str_mv Ciência Rural v.49 n.8 2019
reponame:Ciência Rural
instname:Universidade Federal de Santa Maria (UFSM)
instacron:UFSM
instname_str Universidade Federal de Santa Maria (UFSM)
instacron_str UFSM
institution UFSM
reponame_str Ciência Rural
collection Ciência Rural
repository.name.fl_str_mv
repository.mail.fl_str_mv
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