Wing polymorphism in Pyrrhocoris apterus (Heteroptera, Pyrrhocoridae): penetrance of recessive macropterous homozygotes and duration of larval development

摘要: The length of egg-to-adult development was compared in two strains P. apterus selected for brachyptery or macroptery. Selection influenced the frequency receissive allele macropterism (q), penetrance recessive homozygotes (P), and average duration development. In branchypters, not affected by q, but positively correlated with P (r = 0.889 males 0.941 females). anova revealed that 74.4% variance due to genetic, 16.5% photoperiodic factors. Development macropters (being greater than brachypters) q. We suppose some phenotypic brachypters begin develop as potential macropters, are diverted brachypter late larval stage, therefore have longer “ordinary” brachypters. As ratio “brachypterized” increases P, all also populations short may adaptive significance. linkage between contribute geographic differentiation tendency produce (non-functional flightless) macropters.