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Behav Ecol Sociobiol (2004) 55:461468 DOI 10.1007/s00265-003-0727-8
 

Summary: Behav Ecol Sociobiol (2004) 55:461468
DOI 10.1007/s00265-003-0727-8
O R I G I N A L A R T I C L E
Lars B. Pettersson Indar W. Ramnarine
S. Anette Becher Rajindra Mahabir
Anne E. Magurran
Sex ratio dynamics and fluctuating selection pressures
in natural populations of the Trinidadian guppy, Poecilia reticulata
Received: 5 June 2003 / Revised: 20 August 2003 / Accepted: 28 October 2003 / Published online: 10 December 2003
Springer-Verlag 2003
Abstract In many species, population sex ratios have far-
reaching consequences for a wide variety of population-
level and behavioural processes and can directly influence
sexual selection through differential effects on male and
female mating behaviour. Although sex ratios are often
treated as more or less stable population characteristics,
recent theoretical evidence suggests that sex ratios
fluctuate under many conditions, and that the amplitude
of these fluctuations can be considerable. Few studies
have attempted to quantify this variation in systems with

  

Source: Agrell, Jep - Department of Ecology, Lunds Universitet

 

Collections: Environmental Sciences and Ecology