Results 151 to 160 of about 8,839 (212)

Disease from leaves to landscapes: viral hotspots are determined by spatial arrangement and phytochemistry of host plants in specialist caterpillars. [PDF]

open access: yesProc Biol Sci
Christensen T   +8 more
europepmc   +1 more source

Effect of temperature regime on diapause intensity in an adult-wintering Hymenopteran with obligate diapause

Journal of Insect Physiology, 2010
Osmia lignaria is a solitary bee that over-winters as a fully eclosed, cocooned, unfed adult. Our objective is to understand the effect of wintering temperature on diapause maintenance and termination in this species. We measure respiration rates and weight loss in individuals exposed to various wintering temperatures (0, 4, 7, 22 degrees C, outdoors ...
SGOLASTRA, FABIO   +4 more
openaire   +3 more sources

Geographic variation in photoperiodic diapause induction and diapause intensity in Sericinus montelus (Lepidoptera: Papilionidae)

Insect Science, 2011
Abstract  Due to the risk of extinction and ornamental value of the swallowtail butterfly, Sericinus montelus Gray (Lepidoptera: Papilionidae) in China, knowledge about local adaptations is important for the conservation and economical utilization of the species.
Xiao‐Ping Wang   +5 more
openaire   +1 more source

Effect of thermoperiod on diapause intensity in Pyrrhocoris apterus (Heteroptera Pyrrhocoridae)

Journal of Insect Physiology, 2001
The intensity of adult diapause in Pyrrhocoris apterus was measured in two series of experiments as the duration of pre-oviposition period at a constant temperature of 25 degrees C after transfer from short (12L:12D) to long day conditions (18L:6D). Higher diapause intensity was induced with a thermoperiod than at constant temperatures.
, Kalushkov   +3 more
openaire   +2 more sources

Effects of putrescine on diapause induction and intensity, and post‐diapause development of Helicoverpa armigera

Entomologia Experimentalis et Applicata, 2010
AbstractEffects of putrescine on diapause induction and intensity, and post‐diapause development in Helicoverpa armigera (Hübner) (Lepidoptera: Noctuidae) from Wuhan, Hubei, China were studied in the laboratory at different temperatures and photoperiod conditions. The results showed a generally higher incidence of diapause in putrescine‐feeding groups.
Sheng‐Bing Wu   +2 more
openaire   +1 more source

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