Facultative and obligate diapause phenotypes in populations of the European spruce bark beetle <i>Ips typographus</i>.

ABSTRACT: The bark beetle Ips typographus is the most destructive insect pest in Norway spruce-dominated forests. Its potential to establish multiple generations per year (multivoltinism) is one major trait that makes this beetle a severe pest. Ips typographus enters diapause to adjust its life cycle to seasonally changing environments. Diapause is characterized by developmental and reproductive arrest; it prolongs generation time and thus affects voltinism. In I. typographus a facultative, photoperiod-regulated diapause in the adult stage has been described. In addition, the presence of an obligate, photoperiod-independent, diapause has been hypothesized. The diapause phenotype has important implications for I. typographus voltinism, as populations with obligate diapausi

SUBMITTER: Schebeck M 

PROVIDER: S-EPMC8860814 | biostudies-literature | 2022

REPOSITORIES: biostudies-literature