Temperature-dependent development and stage-specific mortality of immature Oulema duftschmidi (Redtenbacher) life stages, in comparison to O. melanopus (L.) and O. gallaeciana (Heyden) (Coleoptera Chrysomelidae)
Published 2024-11-05
Keywords
- Oulema duftschmidi,
- temperature-dependent development,
- stagespecific mortality
How to Cite
Abstract
In a restricted temperature range, the development and stage-specific
mortality of Oulema duftschmidi (Redtenbacher) eggs, larvae and pupae, are
compared to the responses of corresponding O. melanopus (L.) and O. gallaeciana
(Heyden) life stages. The developmental rates are similar on the egg stage, while
O. duftschmidi larvae and pupae developed slower than the corresponding life
stages of the two other species. The developmental threshold of all life stages was
highest for O. duftschmidi. For the three life stages of each species, a linear model
was found satisfactory to describe the developmental rate - temperature
relationship. In genera!, the stage-specific mortality is highest in O. duftschmidi
life stages. On the larval and pupal stages, O. duftschmidi responds with increasing,
and the other two species with decreasing mortality rates to a temperature increase
from 20 to 25°C.