Artificial bidirectional selection for a species-specific behavioural element, staccato movement, in paradise fish, Macropodus opercularis

Robert Gerlai, V. Csányi

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Abstract. The possibility that phenotypical correlations between staccato movement (an element of fear response in novel situations) and several other behavioural elements of paradise fish have a genetic component has not been investigated previously. The difficulty in determining the genetic underpinnings of staccato movement has been due to violation of the criteria of additive-dominance genetic models of applied-classical and diallel-cross analyses. Furthermore, the limited number of available inbred strains in these cross systems could decrease the number of variable loci and thus one's ability to detect possible genetic effects including genetic covariation. To circumvent these problems, bidirectional selection using a genetically variable outbred population was carried out by recording the behaviour elements in a novel situation, and based on staccato performance, breeding two high-performer and two low-performer lines and a non-selected control population. The response to selection was immediate and strong in the first selected generation in both directions without significant change in the succeeding generations, suggesting a major gene effect in the inheritance of staccato movement. Phenotypical correlations were confirmed between staccato and several other elements. However, correlated response to selection was observed only in one behavioural element (swim), suggesting a genetic component in the swim-staccato phenotypical correlation due either to pleiotropic gene effects or to genetic linkage. The other significant phenotypical correlations between staccato and the behavioural elements, which were non-genetic in origin, also represent a stable correlation structure, which is interpreted to be the result of higher neural mechanisms.

Original languageEnglish
Pages (from-to)1293-1300
Number of pages8
JournalAnimal Behaviour
Volume48
Issue number6
DOIs
Publication statusPublished - Dec 1994

Fingerprint

fish
gene
correlated responses
diallel analysis
major genes
Macropodus opercularis
fearfulness
dominance (genetics)
linkage (genetics)
breeding
inheritance (genetics)
reproductive performance
loci
genes
effect

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Animal Science and Zoology

Cite this

Artificial bidirectional selection for a species-specific behavioural element, staccato movement, in paradise fish, Macropodus opercularis. / Gerlai, Robert; Csányi, V.

In: Animal Behaviour, Vol. 48, No. 6, 12.1994, p. 1293-1300.

Research output: Contribution to journalArticle

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