Ecophysiological consequences of variability in diapause intensity [PDF]
European Journal of Entomology, 2002 Diapause intensity (DI) is a physiological trait represented by the duration of diapause under given conditions of environment. In many species, it is highly variable, probably being controlled by multiple genes and tends to form a cline in response to ...
Sinzo MASAKI
doaj +6 more sources
Photoperiodic control of the intensity of diapause and diapause development in the bean bug, Riptortus clavatus (Heteroptera: Alydidae) [PDF]
European Journal of Entomology, 2000 Adult diapause in Riptortus clavatus (Thunberg) was induced by short-day photoperiods, and the critical daylength for its induction was 13.5 h. When insects were reared from eggs under diapause-inducing photoperiods near the critical daylength, the ...
Keiji NAKAMURA, Hideharu NUMATA
doaj +4 more sources
Influence of pre-diapause temperature on intensity of summer and winter diapause in the cabbage butterfly Pieris melete (Lepidoptera: Pieridae) [PDF]
European Journal of Entomology, 2008 Effect of pre-diapause temperature on summer and winter diapause intensity was examined under both laboratory and field conditions. Under short photoperiods of 8L : 16D and 10L : 14D, all pupae entered diapause at 15, 18 and 20°C and the incidence of ...
Hai-Jun XIAO +3 more
doaj +4 more sources
Intensity of Larval Diapause in the Bamboo Borer, Omphisa fuscidentalis [PDF]
Zoological Science, 2002 Larvae of the bamboo borer, Omphisa fuscidentalis, enter larval diapause in September and pupate in the following June (Singtripop et al., 1999). We examined the changes in the responses of larvae to exogenous 20-hydroxyecdysone (20E) in order to estimate the progress of diapause development.
Tippawan, Singtripop +2 more
core +7 more sources
Effects of Pre-Diapause Temperature and Body Weight on the Diapause Intensity of the Overwintering Generation of Bactrocera minax (Diptera: Tephritidae). [PDF]
J Insect Sci, 2020 AbstractThe Chinese citrus fruit fly, Bactrocera minax (Enderlein), is an economically important pest of citrus. The fly has an obligatory pupal diapause in soil from November to March. However, techniques for predicting or determining the emergence of the adult have, thus far, not been well documented.
Zhou Z +6 more
europepmc +4 more sources
Expression Patterns of Three Important Hormone Genes and Respiratory Metabolism in Antheraea pernyi during Pupal Diapause under a Long Photoperiod [PDF]
Insects, 2021 The Chinese oak silkworm is commonly used in pupal diapause research. In this study, a long photoperiod was used to trigger pupal diapause termination.
Qi Wang +8 more
doaj +2 more sources
Controversial aspects of diapause development
European Journal of Entomology, 2002 Although some parts of diapause development have been clarified up by endocrinologists, knowledge of the underlying processes remains insufficient.
Ivo HODEK
doaj +3 more sources
Characterization of overwintering sites (hibernacula) of the West Nile vector Culex pipiens in Central Italy [PDF]
Parasites & VectorsBackground In cool-temperate regions, mosquitoes face winter conditions that hinder their development. To cope with cold temperatures, species like Culex pipiens, a major vector of West Nile virus (WNV), diapause as adult females in overwintering ...
Federico Romiti +15 more
doaj +2 more sources
Applied Entomology and Zoology, 2008 It has been known that diapause is not induced in populations of the two-spotted spider mite, Tetranychus urticae, under continuous darkness (DD). When the light intensity was changed under LD 8:16 at 18°C, the threshold intensity for blue light (475 nm) to induce 50% of diapause was below 50 mW/m2; and the blue light was most effective in ...
Makio Takeda +2 more
exaly +3 more sources
European Journal of Entomology, 2022 Seasonal and geographical adaptations in terms of obligatory embryonic diapause in the parthenogenetic stick insect, Ramulus mikado, were studied. First and second instar nymphs were collected at locations at three latitudes in Japan and reared in the ...
Keiji NAKAMURA, Yuuki FUKUSHIMA
doaj +1 more source