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Abstract:

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.

Registro:

Documento: Artículo
Título:Relation between the reproductive status and somatolactin cell activity in the pituitary of pejerrey, Odontesthes bonariensis (Atheriniformes)
Autor:Vissio, P.G.; Andreone, L.; Paz, D.A.; Maggese, M.C.; Somoza, G.M.; Strssmann, C.A.
Filiación:Laboratorio de Embriologa Animal, Facultad de Ciencias Exactas y Naturales, Ciudad Universitaria (C1428EHA), Buenos Aires, Argentina
Instituto de Investigaciones Biomdicas, Fundacin Pablo Cassar, (C1440FFX), Buenos Aires, Argentina
Instituto Tecnolgico de Chascoms, IIB-INTECH (CONICET-Universidad Nacional de General San Martn), Chascoms, Buenos Aires, Argentina
Tokyo University of Fisheries, Department of Aquatic Biosciences, Minato, Tokyo 108-8477, Japan
Palabras clave: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
Año:2002
Volumen:293
Número:5
Página de inicio:492
Página de fin:499
DOI: http://dx.doi.org/10.1002/jez.10139
Título revista:Journal of Experimental Zoology
Título revista abreviado:J. Exp. Zool.
ISSN:0022104X
CODEN:JEZOA
CAS:Fish Proteins; Glycoproteins; Pituitary Hormones; somatolactin protein, fish
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0022104X_v293_n5_p492_Vissio

Referencias:

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Citas:

---------- APA ----------
Vissio, P.G., Andreone, L., Paz, D.A., Maggese, M.C., Somoza, G.M. & Strssmann, C.A. (2002) . Relation between the reproductive status and somatolactin cell activity in the pituitary of pejerrey, Odontesthes bonariensis (Atheriniformes). Journal of Experimental Zoology, 293(5), 492-499.
http://dx.doi.org/10.1002/jez.10139
---------- CHICAGO ----------
Vissio, P.G., Andreone, L., Paz, D.A., Maggese, M.C., Somoza, G.M., Strssmann, C.A. "Relation between the reproductive status and somatolactin cell activity in the pituitary of pejerrey, Odontesthes bonariensis (Atheriniformes)" . Journal of Experimental Zoology 293, no. 5 (2002) : 492-499.
http://dx.doi.org/10.1002/jez.10139
---------- MLA ----------
Vissio, P.G., Andreone, L., Paz, D.A., Maggese, M.C., Somoza, G.M., Strssmann, C.A. "Relation between the reproductive status and somatolactin cell activity in the pituitary of pejerrey, Odontesthes bonariensis (Atheriniformes)" . Journal of Experimental Zoology, vol. 293, no. 5, 2002, pp. 492-499.
http://dx.doi.org/10.1002/jez.10139
---------- VANCOUVER ----------
Vissio, P.G., Andreone, L., Paz, D.A., Maggese, M.C., Somoza, G.M., Strssmann, C.A. Relation between the reproductive status and somatolactin cell activity in the pituitary of pejerrey, Odontesthes bonariensis (Atheriniformes). J. Exp. Zool. 2002;293(5):492-499.
http://dx.doi.org/10.1002/jez.10139