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Abstract:

The stimulatory effect of the spiperone and naloxone on the ovarian growth was evaluated in females of Aegla uruguayana Schmitt, 1942, being that these neuroregulators were incorporated to food and administrated at a dose of 10-8 mol/animal to each session food. Adult females were sampled with nets in a stream near the municipality of Salto, Province of Buenos Aires, Argentina. At the beginning of the experiment, 10 females were randomly selected, sacrificed, weighed and their ovaries were quickly dissected and weighed to serve as the initial control for evaluating the degree of ovarian growth (gonadosomatic index -GI). Others females (30) were divided in three experimental groups - (a) control: females fed on control pellets composed by fish food - 34% protein and 43% protein; (b) spiperone: females fed on pellets enriched with the dopaminegic antagonist spiperone; (c) naloxone: females fed on pellets enriched with the enkephalinergic antagonist naloxone. After seven week of experiment the females were sacrificed and evaluated the GI. The lipids and cholesterol levels of ovaries and hepatopancreas were quantified. Naloxone produced a significant increase of lipids levels in both ovaries and hepatopancreas in relation to control group. Spiperone caused significant increase of lipids levels at the gonads and hepatopancreas and cholesterol in hepatopancreas when compared with the control. The lipids levels were significantly lower in hemolymph of the females that were fed with pellets with spiperone and higher at the females treated with naloxone when compared to females that were fed only fish food. The spiperone and naloxone when inhibited the effect of the dopamine and endogenous opioids, probably caused the secretion of the gonad stimulating hormone and the inhibition of the gonad inhibiting hormone, therefore induction of the ovarian development. Such hypothesis can be strengthened for the increases of gonadosomatic indices in these experimental groups.

Registro:

Documento: Artículo
Título:Induction of ovarian growth in Aegla uruguayana (Anomura, Aeglidae) by means of neuroregulators incorporated to food
Autor:Castiglioni, D.S.; Cahansky, A.V.; Rodríguez, E.; Dutra, B.K.; Oliveira, G.T.; Bond-Buckup, G.
Filiación:Departamento de Zoologia, Instituto de Biociências, Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves 9500, 91501-970 Porto Alegre, RS, Brazil
Departamento de Biodiversidad y Biología Experimental, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pab. II, C1428AXC Buenos Aires, Argentina
Departamento de Fisiologia, Faculdade de Biociências, PUCRS, Av. Ipiranga, 6681/Prédio 12A, 90619-900 Porto Alegre, RS, Brazil
Palabras clave:Anomura; Intermediary metabolism; Naloxone; Ovarian growth; Spiperona; Aegla uruguayana; Aeglidae; Anomura
Año:2009
Volumen:99
Número:3
Página de inicio:286
Página de fin:290
Título revista:Iheringia - Serie Zoologia
Título revista abreviado:Iheringia Ser. Zool.
ISSN:00734721
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00734721_v99_n3_p286_Castiglioni

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Citas:

---------- APA ----------
Castiglioni, D.S., Cahansky, A.V., Rodríguez, E., Dutra, B.K., Oliveira, G.T. & Bond-Buckup, G. (2009) . Induction of ovarian growth in Aegla uruguayana (Anomura, Aeglidae) by means of neuroregulators incorporated to food . Iheringia - Serie Zoologia, 99(3), 286-290.
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00734721_v99_n3_p286_Castiglioni [ ]
---------- CHICAGO ----------
Castiglioni, D.S., Cahansky, A.V., Rodríguez, E., Dutra, B.K., Oliveira, G.T., Bond-Buckup, G. "Induction of ovarian growth in Aegla uruguayana (Anomura, Aeglidae) by means of neuroregulators incorporated to food " . Iheringia - Serie Zoologia 99, no. 3 (2009) : 286-290.
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00734721_v99_n3_p286_Castiglioni [ ]
---------- MLA ----------
Castiglioni, D.S., Cahansky, A.V., Rodríguez, E., Dutra, B.K., Oliveira, G.T., Bond-Buckup, G. "Induction of ovarian growth in Aegla uruguayana (Anomura, Aeglidae) by means of neuroregulators incorporated to food " . Iheringia - Serie Zoologia, vol. 99, no. 3, 2009, pp. 286-290.
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00734721_v99_n3_p286_Castiglioni [ ]
---------- VANCOUVER ----------
Castiglioni, D.S., Cahansky, A.V., Rodríguez, E., Dutra, B.K., Oliveira, G.T., Bond-Buckup, G. Induction of ovarian growth in Aegla uruguayana (Anomura, Aeglidae) by means of neuroregulators incorporated to food . Iheringia Ser. Zool. 2009;99(3):286-290.
Available from: https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00734721_v99_n3_p286_Castiglioni [ ]