Genetics of colour and its regulation during development in the spider Enoplognatha ovata (Clerck) (Araneae: Theridiidae)

Abstract

Breeding experiments have been performed to elucidate the genetics of colour and pattern in Enoplognatha ovata. The three main morphs, lineata, redimita and ovata, appear to be controlled by alleles at one locus. Red pigment in redimita and ovata may be deposited either in the third or fourth instars or at maturity. Patterns appearing early in development are found in both sexes whereas those appearing only at maturity are sex limited to females; males remain plain yellow (lineata). In mature females and some males, ovata is top dominant and Iineata bottom recessive. Various genetic models of colour/pattern and its developmental control are explored. © 1983, The Genetical Society of Great Britain.