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Titolo:
PARENTAL INVESTMENT AND THE CONTROL OF SEXUAL SELECTION - PREDICTING THE DIRECTION OF SEXUAL COMPETITION
Autore:
PARKER GA; SIMMONS LW;
Indirizzi:
UNIV LIVERPOOL,DEPT ENVIRONM & EVOLUTIONARY BIOL,POB 147 LIVERPOOL L69 3BX MERSEYSIDE ENGLAND
Titolo Testata:
Proceedings - Royal Society. Biological Sciences
fascicolo: 1368, volume: 263, anno: 1996,
pagine: 315 - 321
SICI:
0962-8452(1996)263:1368<315:PIATCO>2.0.ZU;2-7
Fonte:
ISI
Lingua:
ENG
Soggetto:
POTENTIAL REPRODUCTIVE RATES; MULTIPLE MATINGS; FEMALES; TETTIGONIIDS; FECUNDITY; MALES; ROLES; MATE;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
29
Recensione:
Indirizzi per estratti:
Citazione:
G.A. Parker e L.W. Simmons, "PARENTAL INVESTMENT AND THE CONTROL OF SEXUAL SELECTION - PREDICTING THE DIRECTION OF SEXUAL COMPETITION", Proceedings - Royal Society. Biological Sciences, 263(1368), 1996, pp. 315-321

Abstract

We outline a technique for deducing the general direction of sexual competition which does not involve direct measurement of operational sex ratio. In doing so, we identify three key parameters that are responsible for the control of sexual selection; the relative 'times out' from reproductive activity for each sex, the adult sex ratio, and the extent of collateral investment. Reproductive events can be complex, involving collateral investments from several individuals, either simultaneously or sequentially. For example, two males may invest in the clutch of a single female. The direction of sexual competition depends on all three components. If the adult sex ratio is unity, it is easy to see that techniques involving comparison of potential rates of reproduction give the same prediction of the direction of sexual competition as times out, basically because potential reproductive rate involves the use of times out. Increased collateral investment by one sex increases the probability of sexual competition among the opposite sex. We stress that it is important to use the population mean values for relative times out and not the maximum possible value for an individual because it is the availability of mates within the population that will determine whether an individual will compete.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 26/11/20 alle ore 13:15:56