Morphological and histochemical characteristics of the epithelium of ovarian lamellae of Genypterus blacodes (Schneider, 1801)

The physiological significance of the glycoproteins (GPs) secreted by the epithelium of ovarian lamellae is discussed in reference to the reproductive biology of G. blacodes. Histochemical procedures for localising and characterising GPs were used to determine the cytoplasmic components of cells of...

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Autores principales: Freijo, R.O., García, A.M., Portiansky, E.L., Barbeito, C.G., Macchi, G.J., Díaz, A.O.
Formato: JOUR
Lenguaje:English
Materias:
Epithelium of ovarian lamellae
Genypterus blacodes
Glycoproteins
Histochemistry
Ovary
animal
Argentina
article
Atlantic Ocean
cytochemistry
epithelium
female
fish
histology
metabolism
microscopy
ovary
Animals
Epithelium
Female
Fishes
Histocytochemistry
Microscopy
Ophidiidae
Pisces
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_09201742_v35_n3_p359_Freijo
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
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spelling todo:paper_09201742_v35_n3_p359_Freijo2023-10-03T15:44:46Z Morphological and histochemical characteristics of the epithelium of ovarian lamellae of Genypterus blacodes (Schneider, 1801) Freijo, R.O. García, A.M. Portiansky, E.L. Barbeito, C.G. Macchi, G.J. Díaz, A.O. Epithelium of ovarian lamellae Genypterus blacodes Glycoproteins Histochemistry Ovary animal Argentina article Atlantic Ocean cytochemistry epithelium female fish histology metabolism microscopy ovary Animals Argentina Atlantic Ocean Epithelium Female Fishes Histocytochemistry Microscopy Ovary Genypterus blacodes Ophidiidae Pisces The physiological significance of the glycoproteins (GPs) secreted by the epithelium of ovarian lamellae is discussed in reference to the reproductive biology of G. blacodes. Histochemical procedures for localising and characterising GPs were used to determine the cytoplasmic components of cells of the epithelium that covers the ovarian lamellae of pink cuskeel, Genypterus blacodes (Schneider, 1801) (Pisces, Ophidiidae), during spawning. This species is one of the most valuable demersal fish resources in the Argentine Sea, mainly due its large size and flesh quality. GPs with oxidizable vicinal diol groups, sialic acid with or without O-acyl substituents, O-acyl sugars, neutral sugars and GPs with carboxyl and sulphate groups were detected. Light microscope examination showed morphological changes in the epithelium of ovarian lamellae during the spawning season, associated with a secretory activity of mucus. Optical density studies revealed the presence of polyploid cells encompassing those morphological changes. Results of the present study suggest that the epithelium of ovarian lamellae of G. blacodes performs a secretory role, which is intensified during ovarian maturity, suggesting that G. blacodes could release masses of eggs enveloped in mucus. © Springer Science+Business Media B.V. 2008. JOUR English info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_09201742_v35_n3_p359_Freijo
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
language English
orig_language_str_mv English
topic Epithelium of ovarian lamellae
Genypterus blacodes
Glycoproteins
Histochemistry
Ovary
animal
Argentina
article
Atlantic Ocean
cytochemistry
epithelium
female
fish
histology
metabolism
microscopy
ovary
Animals
Argentina
Atlantic Ocean
Epithelium
Female
Fishes
Histocytochemistry
Microscopy
Ovary
Genypterus blacodes
Ophidiidae
Pisces
spellingShingle Epithelium of ovarian lamellae
Genypterus blacodes
Glycoproteins
Histochemistry
Ovary
animal
Argentina
article
Atlantic Ocean
cytochemistry
epithelium
female
fish
histology
metabolism
microscopy
ovary
Animals
Argentina
Atlantic Ocean
Epithelium
Female
Fishes
Histocytochemistry
Microscopy
Ovary
Genypterus blacodes
Ophidiidae
Pisces
Freijo, R.O.
García, A.M.
Portiansky, E.L.
Barbeito, C.G.
Macchi, G.J.
Díaz, A.O.
Morphological and histochemical characteristics of the epithelium of ovarian lamellae of Genypterus blacodes (Schneider, 1801)
topic_facet Epithelium of ovarian lamellae
Genypterus blacodes
Glycoproteins
Histochemistry
Ovary
animal
Argentina
article
Atlantic Ocean
cytochemistry
epithelium
female
fish
histology
metabolism
microscopy
ovary
Animals
Argentina
Atlantic Ocean
Epithelium
Female
Fishes
Histocytochemistry
Microscopy
Ovary
Genypterus blacodes
Ophidiidae
Pisces
description The physiological significance of the glycoproteins (GPs) secreted by the epithelium of ovarian lamellae is discussed in reference to the reproductive biology of G. blacodes. Histochemical procedures for localising and characterising GPs were used to determine the cytoplasmic components of cells of the epithelium that covers the ovarian lamellae of pink cuskeel, Genypterus blacodes (Schneider, 1801) (Pisces, Ophidiidae), during spawning. This species is one of the most valuable demersal fish resources in the Argentine Sea, mainly due its large size and flesh quality. GPs with oxidizable vicinal diol groups, sialic acid with or without O-acyl substituents, O-acyl sugars, neutral sugars and GPs with carboxyl and sulphate groups were detected. Light microscope examination showed morphological changes in the epithelium of ovarian lamellae during the spawning season, associated with a secretory activity of mucus. Optical density studies revealed the presence of polyploid cells encompassing those morphological changes. Results of the present study suggest that the epithelium of ovarian lamellae of G. blacodes performs a secretory role, which is intensified during ovarian maturity, suggesting that G. blacodes could release masses of eggs enveloped in mucus. © Springer Science+Business Media B.V. 2008.
format JOUR
author Freijo, R.O.
García, A.M.
Portiansky, E.L.
Barbeito, C.G.
Macchi, G.J.
Díaz, A.O.
author_facet Freijo, R.O.
García, A.M.
Portiansky, E.L.
Barbeito, C.G.
Macchi, G.J.
Díaz, A.O.
author_sort Freijo, R.O.
title Morphological and histochemical characteristics of the epithelium of ovarian lamellae of Genypterus blacodes (Schneider, 1801)
title_short Morphological and histochemical characteristics of the epithelium of ovarian lamellae of Genypterus blacodes (Schneider, 1801)
title_full Morphological and histochemical characteristics of the epithelium of ovarian lamellae of Genypterus blacodes (Schneider, 1801)
title_fullStr Morphological and histochemical characteristics of the epithelium of ovarian lamellae of Genypterus blacodes (Schneider, 1801)
title_full_unstemmed Morphological and histochemical characteristics of the epithelium of ovarian lamellae of Genypterus blacodes (Schneider, 1801)
title_sort morphological and histochemical characteristics of the epithelium of ovarian lamellae of genypterus blacodes (schneider, 1801)
url http://hdl.handle.net/20.500.12110/paper_09201742_v35_n3_p359_Freijo
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