Effects of androgenic gland ablation on growth and reproductive parameters of Cherax quadricarinatus males (Parastacidae, Decapoda)

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...

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Autores principales: Tropea, C., Hermida, G.N., López Greco, L.S.
Formato: JOUR
Materias:
Androgenic gland
Cherax quadricarinatus
Growth
Reproductive system
Sexual characters
androgenic gland
animal tissue
appendices masculinae
article
body growth
chelae size
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
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_00166480_v174_n2_p211_Tropea
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_00166480_v174_n2_p211_Tropea
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spelling todo:paper_00166480_v174_n2_p211_Tropea2023-10-03T14:14:02Z Effects of androgenic gland ablation on growth and reproductive parameters of Cherax quadricarinatus males (Parastacidae, Decapoda) Tropea, C. Hermida, G.N. López Greco, L.S. 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 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. Fil:Tropea, C. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Hermida, G.N. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:López Greco, L.S. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00166480_v174_n2_p211_Tropea
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic 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
spellingShingle 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
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)
topic_facet 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
description 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.
format JOUR
author Tropea, C.
Hermida, G.N.
López Greco, L.S.
author_facet Tropea, C.
Hermida, G.N.
López Greco, L.S.
author_sort Tropea, C.
title Effects of androgenic gland ablation on growth and reproductive parameters of Cherax quadricarinatus males (Parastacidae, Decapoda)
title_short Effects of androgenic gland ablation on growth and reproductive parameters of Cherax quadricarinatus males (Parastacidae, Decapoda)
title_full Effects of androgenic gland ablation on growth and reproductive parameters of Cherax quadricarinatus males (Parastacidae, Decapoda)
title_fullStr Effects of androgenic gland ablation on growth and reproductive parameters of Cherax quadricarinatus males (Parastacidae, Decapoda)
title_full_unstemmed Effects of androgenic gland ablation on growth and reproductive parameters of Cherax quadricarinatus males (Parastacidae, Decapoda)
title_sort effects of androgenic gland ablation on growth and reproductive parameters of cherax quadricarinatus males (parastacidae, decapoda)
url http://hdl.handle.net/20.500.12110/paper_00166480_v174_n2_p211_Tropea
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AT hermidagn effectsofandrogenicglandablationongrowthandreproductiveparametersofcheraxquadricarinatusmalesparastacidaedecapoda
AT lopezgrecols effectsofandrogenicglandablationongrowthandreproductiveparametersofcheraxquadricarinatusmalesparastacidaedecapoda
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