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Abstract:

This work investigates the effects of androgenic gland (AG) ablation on the structure of the reproductive system, development of secondary sexual characters and somatic growth in Cherax quadricarinatus males. The AG ablation, which was performed at an early developmental stage (initial weight: 1.85 ± 0.03. g), had no effect on the somatic growth parameters (specific growth rate and growth increment), but it prevented the re-formation of male gonopores and appendices masculinae. However, the red patch differentiation and chelae size were similar to those in control males. All the ablated animals developed a male reproductive system. Testis structure was macroscopically and histologically normal. The distal portion of the vas deferens (DVD) was enlarged in some animals, with histological alterations of the epithelium and the structure of the spermatophore. Results suggest that the higher growth in males than in females may be due to an indirect effect of the AG on energy investment in reproduction rather than to a direct effect of an androgen. This is the first report of a potential action of the AG on the secretory activity of the distal VD and the structural organization of the spermatophore. Although the AG may play a role in the development of male copulatory organs, its association with the red patch development deserves further research. The results obtained in the present study support and complement those from intersexes of the same species. © 2011 Elsevier Inc.

Registro:

Documento: Artículo
Título:Effects of androgenic gland ablation on growth and reproductive parameters of Cherax quadricarinatus males (Parastacidae, Decapoda)
Autor:Tropea, C.; Hermida, G.N.; López Greco, L.S.
Filiación:Department of Biodiversity and Experimental Biology, FCEyN, University of Buenos Aires, Cdad. Univ., C1428EGA Buenos Aires, Argentina
Consejo Nacional de Investigaciones Científicas y Técnicas, Rivadavia 1917, C1033AAJ Buenos Aires, Argentina
Palabras clave:Androgenic gland; Cherax quadricarinatus; Growth; Reproductive system; Sexual characters; androgenic gland; animal tissue; appendices masculinae; article; body growth; chelae size; Cherax quadricarinatus; controlled study; Decapoda (Crustacea); developmental stage; developmental, age and growth parameters; endocrine gland; gonad development; gonopore; growth increment; growth rate; male; male genital tract parameters; nonhuman; priority journal; red patch differentiation; spermatophore; testis; vas deferens
Año:2011
Volumen:174
Número:2
Página de inicio:211
Página de fin:218
DOI: http://dx.doi.org/10.1016/j.ygcen.2011.08.023
Título revista:General and Comparative Endocrinology
Título revista abreviado:Gen. Comp. Endocrinol.
ISSN:00166480
CODEN:GCENA
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00166480_v174_n2_p211_Tropea

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Citas:

---------- APA ----------
Tropea, C., Hermida, G.N. & López Greco, L.S. (2011) . Effects of androgenic gland ablation on growth and reproductive parameters of Cherax quadricarinatus males (Parastacidae, Decapoda). General and Comparative Endocrinology, 174(2), 211-218.
http://dx.doi.org/10.1016/j.ygcen.2011.08.023
---------- CHICAGO ----------
Tropea, C., Hermida, G.N., López Greco, L.S. "Effects of androgenic gland ablation on growth and reproductive parameters of Cherax quadricarinatus males (Parastacidae, Decapoda)" . General and Comparative Endocrinology 174, no. 2 (2011) : 211-218.
http://dx.doi.org/10.1016/j.ygcen.2011.08.023
---------- MLA ----------
Tropea, C., Hermida, G.N., López Greco, L.S. "Effects of androgenic gland ablation on growth and reproductive parameters of Cherax quadricarinatus males (Parastacidae, Decapoda)" . General and Comparative Endocrinology, vol. 174, no. 2, 2011, pp. 211-218.
http://dx.doi.org/10.1016/j.ygcen.2011.08.023
---------- VANCOUVER ----------
Tropea, C., Hermida, G.N., López Greco, L.S. Effects of androgenic gland ablation on growth and reproductive parameters of Cherax quadricarinatus males (Parastacidae, Decapoda). Gen. Comp. Endocrinol. 2011;174(2):211-218.
http://dx.doi.org/10.1016/j.ygcen.2011.08.023