Non-additive effects on the morphology of hybrids between two species of large house spiders, Eratigena saeva and E. duellica (Araneae: Agelenidae)
作者: G. S. Oxford
刊名: Arachnology, 2019, Vol.18 (3)
来源数据库: British Arachnological Society
关键词: Backcross generationEratigena atricaF1 generationF2 generationHybridizationMaternal effectMorphometricsQuantitative trait loci (QTL)Sex chromosomesTegenaria
原始语种摘要: Hybridization and introgression in the wild between two species in the Eratigena atrica group of large house spiders, E. duellica and E. saeva, are well documented. However, the morphology of known F1 hybrids and subsequent F2 and backcross generations has not previously been explored. The phenotypes of these interspecific offspring have implications for the ease of introgression and for the morphological identification of individuals of hybrid origin. Here, the progeny from laboratory crosses are analysed using both simple characters and multivariate statistical techniques. F1 hybrids in both sexes are, morphologically, significantly biased towards E. duellica but backcross progeny tend to resemble their non-F1 parents more than expected in a model of additive, unlinked quantitative...
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  • introgression 基因渗入
  • spiders 高级纱罗
  • backcross 回交
  • parents 亲本
  • previously 以前
  • progeny 后代
  • trait 性状
  • additive 添加剂
  • generation 世代
  • morphology 形态学