Growth hormone on ovarian morphology of lambaris (Astyanax bimaculatus) after induced spawning
Autor(a) principal: | |
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Data de Publicação: | 2019 |
Outros Autores: | , , , |
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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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 |
|
_version_ |
1749140553932472320 |