Effects of medial preoptic-anterior hypothalamic lesions on development of sociosexual behavior in dogs

Bilateral medial preoptic-anterior hypothalamic lesions in adult male dogs eliminate or impair copulatory behavior and reduce urine-marking responses but do not affect aggressive behavior. The present study examined the emergence of the adult forms of these same male sociosexual behavioral patterns...

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Bibliographic Details
Published inJournal of comparative & physiological psychology Vol. 93; no. 3; p. 566
Main Authors Hart, B L, Ladewig, J
Format Journal Article
LanguageEnglish
Published United States 01.06.1979
Subjects
Aggression - physiology
Animals
Brain Mapping
Castration
Copulation - physiology
Eliminative Behavior, Animal - physiology
Humans
Hypothalamus - physiology
Hypothalamus, Anterior - physiology
Male
Preoptic Area - physiology
Sexual Behavior, Animal - physiology
Sexual Maturation
Social Dominance
Testosterone - blood
Urination
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Summary:Bilateral medial preoptic-anterior hypothalamic lesions in adult male dogs eliminate or impair copulatory behavior and reduce urine-marking responses but do not affect aggressive behavior. The present study examined the emergence of the adult forms of these same male sociosexual behavioral patterns when the lesions are made prior to puberty. The subjects were allowed to interact with male peers during development. Animals with lesions had reduced frequence of juvenile mounting and an almost total absence of male copulatory activity in adulthood. Urine-marking and aggressive behavior in the juvenile and adult periods were not affected by the lesions. The findings reveal a sparing of function with regard to urine-marking but not sexual behavior.
Bibliography:L
L20
ISSN:0021-9940
DOI:10.1037/h0077588