• Publications
  • Influence
  • B. Seghers
  • Biology, Medicine
  • Evolution; international journal of organic…
  • 1 September 1974
Many marine and freshwater fish move about their environment in a cohesive group called a school and the question, "why do fish school?", has often been raised (e.g., Cushing and Harden Jones, 1968;Expand
Sexual conflict as a consequence of ecology: evidence from guppy, Poecilia reticulata, populations in Trinidad
An investigation of the behaviour of guppies, Poecilia reticulata, in the wild reveals that sexual conflict varies markedly in different habitats. Males from high-predation sites in Trinidad (whereExpand
A cost of sexual harassment in the guppy, Poecilia reticulata
Male guppies in wild Trinidadian populations devote a large proportion of their time to pursuing females, and females, as a result, are frequent targets of sneaky mating attempts. In this paper weExpand
Variation in Schooling and Aggression Amongst Guppy (Poecilia Reticulata) Populations in Trinidad
Schooling behaviour is an effective defence against predation but, since it depends on coordinated behaviour, it may restrict individual competition for limited resources. We tested the hypothesisExpand
Behavioural consequences of an artificial introduction of guppies (Poecilia reticulata) in N. Trinidad: evidence for the evolution of anti-predator behaviour in the wild
Experimental transplants are a particularly effective way of assessing the significance of natural selection in the wild and have been successfully employed in the past to determine how the colourExpand
Marked genetic divergence revealed by allozymes among populations of the guppy Poecilia reticulata (Poeciliidae), in Trinidad
Populations of the guppy Poecilia reticulata from six locations in N. Trinidad were examined by starch gel electrophoresis to estimate their degree of genetic divergence. Variability at sevenExpand
Risk Sensitive Courtship in the Guppy (Poecilia Reticulata)
This study investigated population differences in the courtship behaviour of male guppies, Poecilia reticulata, in the presence and absence of predators. Two Trinidad populations were compared: theExpand
Predator Inspection Behaviour Covaries With Schooling Tendency Amongst Wild Guppy, Poecilia Reticulata, Populations in Trinidad
When fish inspect a predator they incur risk. One way of reducing the cost of inspection is to approach predators in groups large enough to benefit from the safety in numbers advantages of schooling.Expand