Results 171 to 180 of about 8,878 (215)
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Journal of Insect Physiology, 2012
The chestnut weevil Curculio sikkimensis undergoes a prolonged larval diapause that is completed by repeated exposure to chilling and warming. We examined the possible reversibility of diapause intensity in response to temperature changes. All larvae were subjected to an initial chilling followed by incubation at 20°C to force pupation of the 1-year ...
Morio, Higaki, Masatoshi, Toyama
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The chestnut weevil Curculio sikkimensis undergoes a prolonged larval diapause that is completed by repeated exposure to chilling and warming. We examined the possible reversibility of diapause intensity in response to temperature changes. All larvae were subjected to an initial chilling followed by incubation at 20°C to force pupation of the 1-year ...
Morio, Higaki, Masatoshi, Toyama
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Journal of Stored Products Research, 1991
Abstract The duration of diapause at 20°C in eight stocks of Plodia interpunctella and two stocks of Ephestia cautella was compared with the tolerance of diapausing larvae to methyl bromide, the fumigant used for the control of infestations of these moths in the food industry. The tolerance of the P.
C.H. Bell, N. Savvidou
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Abstract The duration of diapause at 20°C in eight stocks of Plodia interpunctella and two stocks of Ephestia cautella was compared with the tolerance of diapausing larvae to methyl bromide, the fumigant used for the control of infestations of these moths in the food industry. The tolerance of the P.
C.H. Bell, N. Savvidou
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Journal of Insect Physiology, 2006
Embryonic diapause is commonly terminated by exposure to low temperature for a certain duration. Previous studies using the silkworm, Bombyx mori, showed that extracellular signal-regulated kinase (ERK), a member of the mitogen-activated protein kinase family, was activated by cold exposure and regulated diapause termination.
Kurako, Kidokoro +3 more
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Embryonic diapause is commonly terminated by exposure to low temperature for a certain duration. Previous studies using the silkworm, Bombyx mori, showed that extracellular signal-regulated kinase (ERK), a member of the mitogen-activated protein kinase family, was activated by cold exposure and regulated diapause termination.
Kurako, Kidokoro +3 more
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Factors influencing the intensity of larval diapause in Ostrinia nubilalis
Journal of Insect Physiology, 1989Abstract A study was made of the factors determining the intensity of larval diapause in Ostrinia nubilalis . Intensity was measured in terms of the number of days of long-day exposure (8 h dark–16 h light) at 30°C required to evoke a 50% incidence of pupation ( Days to P 50 ) in the experimental cultures.
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Journal of Insect Physiology, 2019
The regulation of active and dormant stages of arthropods is critical for surviving unfavourable seasonal conditions, and for many species depends on the diapause intensity (DI). There is substantial information on diapause strategies of arthropods under winter conditions; however, most cases of summer diapause are poorly understood despite its ...
Xuan, Cheng +3 more
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The regulation of active and dormant stages of arthropods is critical for surviving unfavourable seasonal conditions, and for many species depends on the diapause intensity (DI). There is substantial information on diapause strategies of arthropods under winter conditions; however, most cases of summer diapause are poorly understood despite its ...
Xuan, Cheng +3 more
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Photoperiodic and temperature effects on the intensity of larval diapause in Sesamia nonagrioides
Physiological Entomology, 2003Abstract. The intensity of larval diapause in Sesamia nonagrioides Lef (Lepidoptera: Noctuidae) was investigated under laboratory conditions. Newly hatched larvae were exposed to different stationary photoperiods (from LD 7 : 17 h to LD 14 : 10 h), at a constant ...
Argyro A. Fantinou +2 more
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The Canadian Entomologist, 1989
AbstractThe relative diapause intensity of a French univoltine and Saskatchewan commercial strain of the alfalfa leafcutting bee, Megachile rotundata (Fab.), was evaluated over a 3-year period. Prepupae from both strains underwent diapause development at 10 °C for different time periods.
G.H. Rank, F.P. Rank
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AbstractThe relative diapause intensity of a French univoltine and Saskatchewan commercial strain of the alfalfa leafcutting bee, Megachile rotundata (Fab.), was evaluated over a 3-year period. Prepupae from both strains underwent diapause development at 10 °C for different time periods.
G.H. Rank, F.P. Rank
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Entomologia Experimentalis et Applicata, 2009
AbstractThe effects of temperature on maintenance and termination of embryonic diapause were investigated in Jining (35.4°N, 116.6°E) and Sihong (33.5°N, 118.2°E) strains of the Chinese rice grasshopper, Oxya chinensis Thunberg (Orthoptera: Catantopidae). Eggs of both strains entered diapause when incubated at 30, 25, or 20 °C.
Dao‐Hong Zhu +2 more
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AbstractThe effects of temperature on maintenance and termination of embryonic diapause were investigated in Jining (35.4°N, 116.6°E) and Sihong (33.5°N, 118.2°E) strains of the Chinese rice grasshopper, Oxya chinensis Thunberg (Orthoptera: Catantopidae). Eggs of both strains entered diapause when incubated at 30, 25, or 20 °C.
Dao‐Hong Zhu +2 more
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Variations in voltinism and diapause intensity inNemobius sylvestris(Bosc.) (Orthoptera: Gryllidae)
Journal of Natural History, 1978(1978). Variations in voltinism and diapause intensity in Nemobius sylvestris (Bosc.) (Orthoptera: Gryllidae) Journal of Natural History: Vol. 12, No. 4, pp. 461-472.
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Annals of the Entomological Society of America, 1993
Euphilotes Mattoni spp. and Philotiella speciosa (Hy Edwards) are small, blue butterflies of western North America whose larvae feed on flowers and seeds of various Eriogonum Michaux spp. (wild buckwheats). The many species and varieties of Eriogonum hosts variously bloom from March to October, although most bloom only for a month or so.
Gordon F. Pratt, Gregory R. Ballmer
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Euphilotes Mattoni spp. and Philotiella speciosa (Hy Edwards) are small, blue butterflies of western North America whose larvae feed on flowers and seeds of various Eriogonum Michaux spp. (wild buckwheats). The many species and varieties of Eriogonum hosts variously bloom from March to October, although most bloom only for a month or so.
Gordon F. Pratt, Gregory R. Ballmer
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