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Titolo:
COMPLEX ORIGINS OF VARIATION IN THE SEXUAL-BEHAVIOR OF MALE TRINIDADIAN GUPPIES, POECILIA-RETICULATA - INTERACTIONS BETWEEN SOCIAL-ENVIRONMENT, HEREDITY, BODY-SIZE AND AGE
Autore:
RODD FH; SOKOLOWSKI MB;
Indirizzi:
FLORIDA STATE UNIV,DEPT BIOL SCI,BRF TALLAHASSEE FL 32306 YORK UNIV,DEPT BIOL,4700 KEELE ST N YORK ON M3J 1P3 CANADA
Titolo Testata:
Animal behaviour
fascicolo: 5, volume: 49, anno: 1995,
pagine: 1139 - 1159
SICI:
0003-3472(1995)49:5<1139:COOVIT>2.0.ZU;2-L
Fonte:
ISI
Lingua:
ENG
Soggetto:
LIFE-HISTORY EVOLUTION; ALTERNATIVE MATING-BEHAVIOR; FEMALE CHOICE; MATE CHOICE; XIPHOPHORUS-HELLERI; COLOR PATTERNS; GEOGRAPHIC-VARIATION; NATURAL-POPULATIONS; PISCES-POECILIIDAE; LATIPINNA PISCES;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Physical, Chemical & Earth Sciences
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
91
Recensione:
Indirizzi per estratti:
Citazione:
F.H. Rodd e M.B. Sokolowski, "COMPLEX ORIGINS OF VARIATION IN THE SEXUAL-BEHAVIOR OF MALE TRINIDADIAN GUPPIES, POECILIA-RETICULATA - INTERACTIONS BETWEEN SOCIAL-ENVIRONMENT, HEREDITY, BODY-SIZE AND AGE", Animal behaviour, 49(5), 1995, pp. 1139-1159

Abstract

Field observations have shown that there are inter-population differences in the sexual behaviour of male guppies in Trinidad. The greatestdifferences are between guppies that co-exist with different predators. Here, the sexual behaviour of male Trinidadian guppies was studied to determine to what extent these differences in behaviour evolved in response to selection pressure by the predators, to what extent they are an environmentally induced response to aspects of guppy biology that covary with the predators and to what extent these factors interact. To do this, male offspring of guppies from different predator localities were reared in the laboratory under conditions designed to mimic natural variation in wild populations. Two aspects of young male guppies' social environment were manipulated: (1) population demography and (2) origin (predator locality) of conspecifics. Heredity (origin of the males' parents) was responsible for only a small proportion of the variation in sexual behaviour; social environment had a much greater influence. Also, inter-population variation was found in the degree to which a male's behaviour was affected by demographic conditions and in the relationship between a male's body size and his rate of courtship. Male sexual behaviour also varied with male age and with the origin of the female being courted. Various components of male sexual behaviour (e.g. courtship, mating attempts) were influenced to different degrees by the factors examined. Therefore, inter-population differences inmale sexual behaviour result from complex interactions between heritable factors, social environment, male age and male size.

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Documento generato il 26/09/20 alle ore 11:49:58