Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
OBSERVATIONS ON EFFECTS OF NEONATAL CASTRATION UPON SEXUAL AND AGGRESSIVE-BEHAVIOR IN THE MALE COMMON MARMOSET (CALLITHRIX-JACCHUS)
Autore:
DIXSON AF;
Indirizzi:
47 LOWER ST QUAINTON HP22 4BL BUCKS ENGLAND MRC,REPROD BIOL UNIT EDINBURGH SCOTLAND
Titolo Testata:
American journal of primatology
fascicolo: 1, volume: 31, anno: 1993,
pagine: 1 - 10
SICI:
0275-2565(1993)31:1<1:OOEONC>2.0.ZU;2-0
Fonte:
ISI
Lingua:
ENG
Soggetto:
PLASMA TESTOSTERONE CONCENTRATIONS; TAMARINS SAGUINUS-FUSCICOLLIS; FEMALE RHESUS MACAQUES; MONKEYS; PATTERNS; DIFFERENTIATION; EXPRESSION; SECRETION; STEROIDS; HORMONE;
Keywords:
CALLITRICHIDAE; SEXUAL DIFFERENTIATION; AGGRESSION; SEXUAL BEHAVIOR;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
34
Recensione:
Indirizzi per estratti:
Citazione:
A.F. Dixson, "OBSERVATIONS ON EFFECTS OF NEONATAL CASTRATION UPON SEXUAL AND AGGRESSIVE-BEHAVIOR IN THE MALE COMMON MARMOSET (CALLITHRIX-JACCHUS)", American journal of primatology, 31(1), 1993, pp. 1-10

Abstract

The behavior of eight adult male marmosets that were bilaterally castrated during neonatal life (postnatal days 1-7), a single unilaterallycastrated male, and eight age-matched intact adult males was observedduring encounter tests with unfamiliar conspecifics. When neonatally castrated (NC) males encountered ovariectomized, estradiol-treated females, both partners were intensely aggressive and 66% of tests were terminated to avoid injuries. No mounts occurred, and females exhibited little or no sexual initiating behavior (proceptivity) towards NC males. By contrast, encounters between NC males and intact adult males were characterized by low levels of aggression and no tests were terminated. Intact males frequently mounted NC males. However, NC males initiated only 4% of these mounts by intact males and they refused or terminated 67% of mount attempts and mounts by intact males. The age-matchedintact adult males provided data which differed markedly from those obtained using NC males. The intact males were highly aggressive duringencounters with other intact males, whereas they mounted and ejaculated when paired with females. The single male which had been unilaterally castrated in infancy provided similar results to the intact males. These experiments indicate that neonatal castration has profound effects upon the development of sexual and aggressive behavior in male marmosets. However, the stimulus qualities as well as the behavior of males are altered by neonatal castration, so that unfamiliar conspecifics react towards them as females during paired encounters. This finding complicates the interpretation of effects of neonatal castration upon development of sexually dimorphic behavioral patterns in male marmosets. Behavioral effects of castration later in postnatal development remain to be determined. (C) 1993 Wiley-Liss, Inc.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 13/07/20 alle ore 11:06:34