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Titolo:
Testosterone-induced male traits in female puffs (Philomachus pugnax): autosomal inheritance and gender differentiation
Autore:
Lank, DB; Coupe, M; Wynne-Edwards, KE;
Indirizzi:
Simon Fraser Univ, Dept Biol Sci, Burnaby, BC V5A 1S6, Canada Simon FraserUniv Burnaby BC Canada V5A 1S6 , Burnaby, BC V5A 1S6, Canada Queens Univ, Dept Biol, Kingston, ON K7L 3N6, Canada Queens Univ KingstonON Canada K7L 3N6 Biol, Kingston, ON K7L 3N6, Canada
Titolo Testata:
PROCEEDINGS OF THE ROYAL SOCIETY OF LONDON SERIES B-BIOLOGICAL SCIENCES
fascicolo: 1435, volume: 266, anno: 1999,
pagine: 2323 - 2330
SICI:
0962-8452(19991122)266:1435<2323:TMTIFP>2.0.ZU;2-9
Fonte:
ISI
Lingua:
ENG
Soggetto:
WHITE-CROWNED SPARROWS; SEXUAL DIMORPHISM; REPRODUCTIVE STRATEGIES; GENETIC-BASIS; EVOLUTION; SELECTION; POLYMORPHISM; CHROMOSOMES; LEKKING; ADULT;
Keywords:
activation-organization; alternative strategies; genetic models; hormones; polymorphism; sexual differentiation;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
56
Recensione:
Indirizzi per estratti:
Indirizzo: Lank, DB Simon Fraser Univ, Dept Biol Sci, Burnaby, BC V5A 1S6, Canada Simon Fraser Univ Burnaby BC Canada V5A 1S6 , BC V5A 1S6, Canada
Citazione:
D.B. Lank et al., "Testosterone-induced male traits in female puffs (Philomachus pugnax): autosomal inheritance and gender differentiation", P ROY SOC B, 266(1435), 1999, pp. 2323-2330

Abstract

A balanced polymorphism in male mating behaviour exists in male ruffs. with no obvious parallel expression in females. Pedigree data of male phenotypes support an autosomal model of inheritance, in contrast to sex-linked inheritance patterns found in other taxa with sex-limited alternative mating strategy polymorphisms. We tested this model by inducing male courtship behaviour in gonad-intact female ruffs, using subcutaneous testosterone implants that produced physiological concentrations of testosterone. The implants rapidly induced in females both types of male mating behaviour, an increasein body mass typical of pre-breeding males, and the growth of normally male-limited breeding plumage. As predicted under an autosomal model, the distributions of induced male behaviour types in females paralleled those of their brothers and half-brothers, and were inconsistent with sex-linked models. Effects were reversible, and experimental females bred normally in subsequent years. Our results show that genotype-specific male characteristics can be induced by testosterone in female adults that have presumably not undergone neural organization for them early in life, showing direct use of genetic information in intra- and intersexual differentiation.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 13/07/20 alle ore 07:45:54