Artículo

Cánepa, M.M.; Pandolfi, M.; Maggese, M.C.; Vissio, P.G. "Involvement of somatolactin in background adaptation of the cichlid fish Cichlasoma dimerus" (2006) Journal of Experimental Zoology Part A: Comparative Experimental Biology. 305(5):410-419
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Abstract:

Somatolactin (SL) is a pituitary hormone present exclusively in fish that is involved in different physiological processes. The role of SL was evaluated in Cichlasoma dimerus (Teleostei, Perciformes) exposed for 10 days to a black and white background (BB and WB). Changes in α-melanophore stimulating hormone (αMSH) and melanin concentrating hormone (MCH) cells were also analyzed for comparison with SL. A melanin dispersing effect was observed in fish exposed to a BB, while a concentrating one was observed in those exposed to a WB. By Western blot, three SL-immunoreactive (ir) bands (32, 28 and 23.5kD) were evidenced. Pituitary SL-ir levels were 2.66- and 2.67-fold greater in the 32 Kd and 28 kD bands, respectively, in BB fish compared with those of WB fish. The SL-ir 23.5 Kd band was not included in the analysis because of its unknown identity. In addition, SL-ir cell number and area were significantly higher in the BB condition (BB 22.73 ± 1.46, WB 7.37 ± 0.54 and BB 27.39 ± 1.00 μm2; WB: 16.61 ± 0.65 μm2). No significant differences were observed in the number of the hypothalamic MCH-ir neurons. However, a significant difference was observed in their nuclear area (BB 11.61 ± 0.42 μm2, WB 17.80 ± 0.84 μm 2). αMSH-ir cells showed a marked increased in number (BB 35.96 ± 1.22, WB 24.36 ± 1.04), but no significant differences were observed in the cell area. In conclusion, this study presented clear evidence towards a possible involvement of SL in the adaptation to background colors in teleost together with αMSH and MCH. © 2006 Wiley-Liss, Inc.

Registro:

Documento: Artículo
Título:Involvement of somatolactin in background adaptation of the cichlid fish Cichlasoma dimerus
Autor:Cánepa, M.M.; Pandolfi, M.; Maggese, M.C.; Vissio, P.G.
Filiación:Laboratorio de Embriología Animal, Dpto. de Biodiversidad Y Biología Experimental, Ciudad Universitaria, C1428EHA Buenos Aires, Argentina
Palabras clave:Cichlasoma; Cichlidae; Perciformes; Teleostei
Año:2006
Volumen:305
Número:5
Página de inicio:410
Página de fin:419
DOI: http://dx.doi.org/10.1002/jez.a.273
Título revista:Journal of Experimental Zoology Part A: Comparative Experimental Biology
Título revista abreviado:J. Exp. Zool. Part A Comp. Exp. Biol.
ISSN:15488969
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_15488969_v305_n5_p410_Canepa

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Citas:

---------- APA ----------
Cánepa, M.M., Pandolfi, M., Maggese, M.C. & Vissio, P.G. (2006) . Involvement of somatolactin in background adaptation of the cichlid fish Cichlasoma dimerus. Journal of Experimental Zoology Part A: Comparative Experimental Biology, 305(5), 410-419.
http://dx.doi.org/10.1002/jez.a.273
---------- CHICAGO ----------
Cánepa, M.M., Pandolfi, M., Maggese, M.C., Vissio, P.G. "Involvement of somatolactin in background adaptation of the cichlid fish Cichlasoma dimerus" . Journal of Experimental Zoology Part A: Comparative Experimental Biology 305, no. 5 (2006) : 410-419.
http://dx.doi.org/10.1002/jez.a.273
---------- MLA ----------
Cánepa, M.M., Pandolfi, M., Maggese, M.C., Vissio, P.G. "Involvement of somatolactin in background adaptation of the cichlid fish Cichlasoma dimerus" . Journal of Experimental Zoology Part A: Comparative Experimental Biology, vol. 305, no. 5, 2006, pp. 410-419.
http://dx.doi.org/10.1002/jez.a.273
---------- VANCOUVER ----------
Cánepa, M.M., Pandolfi, M., Maggese, M.C., Vissio, P.G. Involvement of somatolactin in background adaptation of the cichlid fish Cichlasoma dimerus. J. Exp. Zool. Part A Comp. Exp. Biol. 2006;305(5):410-419.
http://dx.doi.org/10.1002/jez.a.273