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 +2 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
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 +2 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 +2 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
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
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 +1 more source
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
openaire +2 more sources
Acridid ecology in the sugarcane agro-ecosystem in the Zululand region of KwaZulu-Natal, South Africa [PDF]
Journal of Orthoptera Research, 2020 Grasshoppers and locusts are well known crop and pasture pests throughout the world. Periodically they cause extensive damage to large areas of crops and grazing lands, which often exacerbate food shortage issues in many countries.
Adrian Bam, Pia Addison, Desmond Conlong
doaj +3 more sources
European Journal of Entomology, 2023 The true bug Oxycarenus lavaterae has spread northwards through Europe from the Mediterranean at the beginning of the 21st century. Temperature and photoperiod in particular countries are important for the prediction of further spread.
Oldřich NEDVĚD +2 more
doaj +1 more source