A comparative study of the ovarian histology of eyestalk ablated and unablated Farfantepenaeus paulensis after spawning
Autor(a) principal: | |
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Data de Publicação: | 2002 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da FURG (RI FURG) |
Texto Completo: | http://repositorio.furg.br/handle/1/3026 |
Resumo: | The effect of unilateral eyestalk ablation on ovarian histology of Farfantepenaeus paulensis after spawning was evaluated in the present study. Wild females were captured in deep-sea waters of southern Brazil (27 o S) and randomly divided in two groups: unilaterally eyestalk ablated and unablated (intact) females. A total of six eyestalk ablated and five unablated females were sampled after spawning in separated tanks. Morphological variables were recorded and ovaries were histologically evaluated according to oocyte type and diameter. In the ovarian tissue of unablated females, basophilic oocytes (48.8 ± 18.7 µm) were dominant (99.7 ± 0.6%), with presence significantly lower in the ablated females (93.5 ± 13.8%). Larger acidophilic oocytes (114.9 ± 16.9 µm), with yolk granules in the cytoplasm, were detected only in the ovaries of ablated females. The significantly higher occurrence of atretic oocytes (4.8 ± 10.3%) is another distinguishable feature in the ovaries of ablated females compared with the unablated ones. The presence of advanced yolky oocytes in ablated females just a few hours after spawning, may indicate the effect of eyestalk ablation on the precocious rematuration of the ovary. The higher number of atretic oocytes in the ovary of ablated females could be relevant to their reproductive performance, as they represent a percentage of oocytes that were not released in the spawning process. The present results of the histology of the ovaries reveal the existence of substantial differences in the cell arrangement of ablated and unablated females after spawning. The results also demonstrate the effects of unilateral eyestalk ablation in the reproductive cycle of F. paulensis under laboratory conditions. |
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Peixoto, Silvio Ricardo MauranoCavalli, Ronaldo OliveraD'Incao, FernandoWasielesky Junior, Wilson Francisco BrittoMilach, Ângela Machado2012-12-20T02:01:29Z2012-12-20T02:01:29Z2002PEIXOTO, Silvio Ricardo Maurano et al. A comparative study of the ovarian histology of eyestalk ablated and unablated Farfantepenaeus paulensis after spawning. Boletim do Instituto de Pesca, v. 28, n.1, p. 71-76, 2002. Disponível em: < ftp://ftp.sp.gov.br/ftppesca/Peixoto.pdf >. Acesso em: 07 dez. 2012.http://repositorio.furg.br/handle/1/3026The effect of unilateral eyestalk ablation on ovarian histology of Farfantepenaeus paulensis after spawning was evaluated in the present study. Wild females were captured in deep-sea waters of southern Brazil (27 o S) and randomly divided in two groups: unilaterally eyestalk ablated and unablated (intact) females. A total of six eyestalk ablated and five unablated females were sampled after spawning in separated tanks. Morphological variables were recorded and ovaries were histologically evaluated according to oocyte type and diameter. In the ovarian tissue of unablated females, basophilic oocytes (48.8 ± 18.7 µm) were dominant (99.7 ± 0.6%), with presence significantly lower in the ablated females (93.5 ± 13.8%). Larger acidophilic oocytes (114.9 ± 16.9 µm), with yolk granules in the cytoplasm, were detected only in the ovaries of ablated females. The significantly higher occurrence of atretic oocytes (4.8 ± 10.3%) is another distinguishable feature in the ovaries of ablated females compared with the unablated ones. The presence of advanced yolky oocytes in ablated females just a few hours after spawning, may indicate the effect of eyestalk ablation on the precocious rematuration of the ovary. The higher number of atretic oocytes in the ovary of ablated females could be relevant to their reproductive performance, as they represent a percentage of oocytes that were not released in the spawning process. The present results of the histology of the ovaries reveal the existence of substantial differences in the cell arrangement of ablated and unablated females after spawning. The results also demonstrate the effects of unilateral eyestalk ablation in the reproductive cycle of F. paulensis under laboratory conditions.O presente estudo avalia o efeito da ablação do pedúnculo ocular na histologia gonadal de Farfantepenaeus paulensis após a desova. Fêmeas selvagens foram capturadas em águas profundas na região sul do Brasil (27 o S), sendo divididas aleatoriamente em dois grupos: com ablação unilateral do pedúnculo ocular e sem ablação (intactas). Um total de seis fêmeas sem pedúnculo e cinco intactas foram amostradas após suas desovas individualizadas. Após avaliação dos parâmetros morfológicos, os ovários foram histologicamente analisados quanto ao tipo e diâmetro dos ovócitos. Nos ovários das fêmeas intactas, os ovócitos basófilos (48,8 ± 18,7 µm) foram dominantes (99,7 ± 0,6%), sendo sua presença significativamente inferior (93,5 ± 13,8%) em fêmeas sem pedúnculo. Ovócitos acidófilos de maior tamanho (114,9 ± 16,9 µm), com citoplasma granuloso, foram observados apenas nos ovários das fêmeas sem pedúnculo. A ocorrência elevada de ovócitos em atresia (4,8 ± 10,3%) foi outra característica dos ovários das fêmeas sem pedúnculo, quando comparados aos das fêmeas não-abladas. A presença de ovócitos em desenvolvimento mais avançado em fêmeas sem pedúnculo, algumas horas após a desova, parece indicar o efeito da ablação do pedúnculo ocular na maturação precoce dos ovários. A alta incidência de ovócitos atrésicos em fêmeas sem pedúnculo pode ser relevante para seu desempenho reprodutivo, já que representam uma porcentagem de ovócitos não liberados no momento da desova. Pode-se concluir que a histologia dos ovários permite revelar diferenças significativas no arranjo celular de fêmeas sem pedúnculo e intactas. Os resultados demonstram o efeito da ablação do pedúnculo ocular no desempenho reprodutivo de F. paulensis em laboratório.engEyestalk ablationGonadHistologyReproductionFarfantepenaeus paulensisAblação do pedúnculo ocularGônadaHistologiaReproduçãoFarfantepenaeus paulensisA comparative study of the ovarian histology of eyestalk ablated and unablated Farfantepenaeus paulensis after spawningEstudo comparativo da histologia ovariana de Farfantepenaeus paulensis com e sem ablação do pedúnculo ocular após a desovainfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleinfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da FURG (RI FURG)instname:Universidade Federal do Rio Grande (FURG)instacron:FURGORIGINALA COMPARATIVE STUDY OF THE OVARIAN HISTOLOGY OF EYESTALK ABLATED AND.pdfA COMPARATIVE STUDY OF THE OVARIAN HISTOLOGY OF EYESTALK ABLATED AND.pdfapplication/pdf1076323https://repositorio.furg.br/bitstream/1/3026/1/A%20COMPARATIVE%20STUDY%20OF%20THE%20OVARIAN%20HISTOLOGY%20OF%20EYESTALK%20ABLATED%20AND.pdfa8ddddfe68e7bdbba7fd74f65d403c01MD51open accessLICENSElicense.txtlicense.txttext/plain; charset=utf-81724https://repositorio.furg.br/bitstream/1/3026/2/license.txt5b92b9704b4f13242d70e45ddef35a68MD52open access1/30262012-12-20 00:01:29.599open accessoai:repositorio.furg.br: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Repositório InstitucionalPUBhttps://repositorio.furg.br/oai/request || http://200.19.254.174/oai/requestopendoar:2012-12-20T02:01:29Repositório Institucional da FURG (RI FURG) - Universidade Federal do Rio Grande (FURG)false |
dc.title.pt_BR.fl_str_mv |
A comparative study of the ovarian histology of eyestalk ablated and unablated Farfantepenaeus paulensis after spawning |
dc.title.alternative.pt_BR.fl_str_mv |
Estudo comparativo da histologia ovariana de Farfantepenaeus paulensis com e sem ablação do pedúnculo ocular após a desova |
title |
A comparative study of the ovarian histology of eyestalk ablated and unablated Farfantepenaeus paulensis after spawning |
spellingShingle |
A comparative study of the ovarian histology of eyestalk ablated and unablated Farfantepenaeus paulensis after spawning Peixoto, Silvio Ricardo Maurano Eyestalk ablation Gonad Histology Reproduction Farfantepenaeus paulensis Ablação do pedúnculo ocular Gônada Histologia Reprodução Farfantepenaeus paulensis |
title_short |
A comparative study of the ovarian histology of eyestalk ablated and unablated Farfantepenaeus paulensis after spawning |
title_full |
A comparative study of the ovarian histology of eyestalk ablated and unablated Farfantepenaeus paulensis after spawning |
title_fullStr |
A comparative study of the ovarian histology of eyestalk ablated and unablated Farfantepenaeus paulensis after spawning |
title_full_unstemmed |
A comparative study of the ovarian histology of eyestalk ablated and unablated Farfantepenaeus paulensis after spawning |
title_sort |
A comparative study of the ovarian histology of eyestalk ablated and unablated Farfantepenaeus paulensis after spawning |
author |
Peixoto, Silvio Ricardo Maurano |
author_facet |
Peixoto, Silvio Ricardo Maurano Cavalli, Ronaldo Olivera D'Incao, Fernando Wasielesky Junior, Wilson Francisco Britto Milach, Ângela Machado |
author_role |
author |
author2 |
Cavalli, Ronaldo Olivera D'Incao, Fernando Wasielesky Junior, Wilson Francisco Britto Milach, Ângela Machado |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Peixoto, Silvio Ricardo Maurano Cavalli, Ronaldo Olivera D'Incao, Fernando Wasielesky Junior, Wilson Francisco Britto Milach, Ângela Machado |
dc.subject.por.fl_str_mv |
Eyestalk ablation Gonad Histology Reproduction Farfantepenaeus paulensis Ablação do pedúnculo ocular Gônada Histologia Reprodução Farfantepenaeus paulensis |
topic |
Eyestalk ablation Gonad Histology Reproduction Farfantepenaeus paulensis Ablação do pedúnculo ocular Gônada Histologia Reprodução Farfantepenaeus paulensis |
description |
The effect of unilateral eyestalk ablation on ovarian histology of Farfantepenaeus paulensis after spawning was evaluated in the present study. Wild females were captured in deep-sea waters of southern Brazil (27 o S) and randomly divided in two groups: unilaterally eyestalk ablated and unablated (intact) females. A total of six eyestalk ablated and five unablated females were sampled after spawning in separated tanks. Morphological variables were recorded and ovaries were histologically evaluated according to oocyte type and diameter. In the ovarian tissue of unablated females, basophilic oocytes (48.8 ± 18.7 µm) were dominant (99.7 ± 0.6%), with presence significantly lower in the ablated females (93.5 ± 13.8%). Larger acidophilic oocytes (114.9 ± 16.9 µm), with yolk granules in the cytoplasm, were detected only in the ovaries of ablated females. The significantly higher occurrence of atretic oocytes (4.8 ± 10.3%) is another distinguishable feature in the ovaries of ablated females compared with the unablated ones. The presence of advanced yolky oocytes in ablated females just a few hours after spawning, may indicate the effect of eyestalk ablation on the precocious rematuration of the ovary. The higher number of atretic oocytes in the ovary of ablated females could be relevant to their reproductive performance, as they represent a percentage of oocytes that were not released in the spawning process. The present results of the histology of the ovaries reveal the existence of substantial differences in the cell arrangement of ablated and unablated females after spawning. The results also demonstrate the effects of unilateral eyestalk ablation in the reproductive cycle of F. paulensis under laboratory conditions. |
publishDate |
2002 |
dc.date.issued.fl_str_mv |
2002 |
dc.date.accessioned.fl_str_mv |
2012-12-20T02:01:29Z |
dc.date.available.fl_str_mv |
2012-12-20T02:01:29Z |
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.citation.fl_str_mv |
PEIXOTO, Silvio Ricardo Maurano et al. A comparative study of the ovarian histology of eyestalk ablated and unablated Farfantepenaeus paulensis after spawning. Boletim do Instituto de Pesca, v. 28, n.1, p. 71-76, 2002. Disponível em: < ftp://ftp.sp.gov.br/ftppesca/Peixoto.pdf >. Acesso em: 07 dez. 2012. |
dc.identifier.uri.fl_str_mv |
http://repositorio.furg.br/handle/1/3026 |
identifier_str_mv |
PEIXOTO, Silvio Ricardo Maurano et al. A comparative study of the ovarian histology of eyestalk ablated and unablated Farfantepenaeus paulensis after spawning. Boletim do Instituto de Pesca, v. 28, n.1, p. 71-76, 2002. Disponível em: < ftp://ftp.sp.gov.br/ftppesca/Peixoto.pdf >. Acesso em: 07 dez. 2012. |
url |
http://repositorio.furg.br/handle/1/3026 |
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eng |
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eng |
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openAccess |
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