Relation between the reproductive status and somatolactin cell activity in the pituitary of pejerrey, Odontesthes bonariensis (Atheriniformes)

The aim of this study was to analyze the relationship between somatolactin (SL) expressing cells and the reproductive status in a multiple spawning fish, the pejerrey Odontesthes bonariensis. Somatolactin cells were identified in adults of both sexes by immunocytochemistry using a heterologous pisci...

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Autores principales: Vissio, Paula Gabriela, Paz, Dante Agustin, Maggese, María Cristina Irene, Somoza, Gustavo Manuel
Publicado: 2002
Materias:
Animalia
Atheriniformes
Odontesthes
Odontesthes bonariensis
Pisces
fish protein
glycoprotein
hypophysis hormone
somatolactin protein, fish
aging
animal
article
cytology
female
fish
gene expression
hypophysis
immunohistochemistry
male
metabolism
physiology
reproduction
Aging
Animals
Female
Fish Proteins
Fishes
Gene Expression
Glycoproteins
Immunohistochemistry
Male
Pituitary Gland
Pituitary Hormones
Reproduction
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0022104X_v293_n5_p492_Vissio
http://hdl.handle.net/20.500.12110/paper_0022104X_v293_n5_p492_Vissio
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_0022104X_v293_n5_p492_Vissio
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spelling paper:paper_0022104X_v293_n5_p492_Vissio2023-06-08T14:45:51Z Relation between the reproductive status and somatolactin cell activity in the pituitary of pejerrey, Odontesthes bonariensis (Atheriniformes) Vissio, Paula Gabriela Paz, Dante Agustin Maggese, María Cristina Irene Somoza, Gustavo Manuel Animalia Atheriniformes Odontesthes Odontesthes bonariensis Pisces fish protein glycoprotein hypophysis hormone somatolactin protein, fish aging animal article cytology female fish gene expression hypophysis immunohistochemistry male metabolism physiology reproduction Aging Animals Female Fish Proteins Fishes Gene Expression Glycoproteins Immunohistochemistry Male Pituitary Gland Pituitary Hormones Reproduction The aim of this study was to analyze the relationship between somatolactin (SL) expressing cells and the reproductive status in a multiple spawning fish, the pejerrey Odontesthes bonariensis. Somatolactin cells were identified in adults of both sexes by immunocytochemistry using a heterologous piscine antiserum. The area of the cells that showed immunoreactivity to SL (ir-SL) was compared in specimens with different degrees of reproductive activity as inferred from histological examination of the gonads and calculation of the gonadosomatic index (GSI%). The results showed a significant difference between the area of ir-SL cells of resting/regressing (62.9 ± 2.1 μm2) and sexually active/vitellogenic (76.8 ± 2,3 μm2) females and a significant positive correlation between the ir-SL cellular area and the GSI% (P < 0.01 in both cases). In males, the correlation between the area of ir-SL cells and the GSI% was not statistically significant. However, in those animals with the highest GSI% values, the ir-SL cells appeared more numerous and showed an increase in the immunostained area when compared to individuals with lower GSI% values. The present morphological observations are in accordance with biochemical data obtained from other species and support the assumption that SL might be involved in the regulation of reproduction in fish. © 2002 Wiley-Liss, Inc. Fil:Vissio, P.G. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Paz, D.A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Maggese, M.C. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Somoza, G.M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2002 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0022104X_v293_n5_p492_Vissio http://hdl.handle.net/20.500.12110/paper_0022104X_v293_n5_p492_Vissio
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Animalia
Atheriniformes
Odontesthes
Odontesthes bonariensis
Pisces
fish protein
glycoprotein
hypophysis hormone
somatolactin protein, fish
aging
animal
article
cytology
female
fish
gene expression
hypophysis
immunohistochemistry
male
metabolism
physiology
reproduction
Aging
Animals
Female
Fish Proteins
Fishes
Gene Expression
Glycoproteins
Immunohistochemistry
Male
Pituitary Gland
Pituitary Hormones
Reproduction
spellingShingle Animalia
Atheriniformes
Odontesthes
Odontesthes bonariensis
Pisces
fish protein
glycoprotein
hypophysis hormone
somatolactin protein, fish
aging
animal
article
cytology
female
fish
gene expression
hypophysis
immunohistochemistry
male
metabolism
physiology
reproduction
Aging
Animals
Female
Fish Proteins
Fishes
Gene Expression
Glycoproteins
Immunohistochemistry
Male
Pituitary Gland
Pituitary Hormones
Reproduction
Vissio, Paula Gabriela
Paz, Dante Agustin
Maggese, María Cristina Irene
Somoza, Gustavo Manuel
Relation between the reproductive status and somatolactin cell activity in the pituitary of pejerrey, Odontesthes bonariensis (Atheriniformes)
topic_facet Animalia
Atheriniformes
Odontesthes
Odontesthes bonariensis
Pisces
fish protein
glycoprotein
hypophysis hormone
somatolactin protein, fish
aging
animal
article
cytology
female
fish
gene expression
hypophysis
immunohistochemistry
male
metabolism
physiology
reproduction
Aging
Animals
Female
Fish Proteins
Fishes
Gene Expression
Glycoproteins
Immunohistochemistry
Male
Pituitary Gland
Pituitary Hormones
Reproduction
description The aim of this study was to analyze the relationship between somatolactin (SL) expressing cells and the reproductive status in a multiple spawning fish, the pejerrey Odontesthes bonariensis. Somatolactin cells were identified in adults of both sexes by immunocytochemistry using a heterologous piscine antiserum. The area of the cells that showed immunoreactivity to SL (ir-SL) was compared in specimens with different degrees of reproductive activity as inferred from histological examination of the gonads and calculation of the gonadosomatic index (GSI%). The results showed a significant difference between the area of ir-SL cells of resting/regressing (62.9 ± 2.1 μm2) and sexually active/vitellogenic (76.8 ± 2,3 μm2) females and a significant positive correlation between the ir-SL cellular area and the GSI% (P < 0.01 in both cases). In males, the correlation between the area of ir-SL cells and the GSI% was not statistically significant. However, in those animals with the highest GSI% values, the ir-SL cells appeared more numerous and showed an increase in the immunostained area when compared to individuals with lower GSI% values. The present morphological observations are in accordance with biochemical data obtained from other species and support the assumption that SL might be involved in the regulation of reproduction in fish. © 2002 Wiley-Liss, Inc.
author Vissio, Paula Gabriela
Paz, Dante Agustin
Maggese, María Cristina Irene
Somoza, Gustavo Manuel
author_facet Vissio, Paula Gabriela
Paz, Dante Agustin
Maggese, María Cristina Irene
Somoza, Gustavo Manuel
author_sort Vissio, Paula Gabriela
title Relation between the reproductive status and somatolactin cell activity in the pituitary of pejerrey, Odontesthes bonariensis (Atheriniformes)
title_short Relation between the reproductive status and somatolactin cell activity in the pituitary of pejerrey, Odontesthes bonariensis (Atheriniformes)
title_full Relation between the reproductive status and somatolactin cell activity in the pituitary of pejerrey, Odontesthes bonariensis (Atheriniformes)
title_fullStr Relation between the reproductive status and somatolactin cell activity in the pituitary of pejerrey, Odontesthes bonariensis (Atheriniformes)
title_full_unstemmed Relation between the reproductive status and somatolactin cell activity in the pituitary of pejerrey, Odontesthes bonariensis (Atheriniformes)
title_sort relation between the reproductive status and somatolactin cell activity in the pituitary of pejerrey, odontesthes bonariensis (atheriniformes)
publishDate 2002
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0022104X_v293_n5_p492_Vissio
http://hdl.handle.net/20.500.12110/paper_0022104X_v293_n5_p492_Vissio
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AT pazdanteagustin relationbetweenthereproductivestatusandsomatolactincellactivityinthepituitaryofpejerreyodontesthesbonariensisatheriniformes
AT maggesemariacristinairene relationbetweenthereproductivestatusandsomatolactincellactivityinthepituitaryofpejerreyodontesthesbonariensisatheriniformes
AT somozagustavomanuel relationbetweenthereproductivestatusandsomatolactincellactivityinthepituitaryofpejerreyodontesthesbonariensisatheriniformes
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