Results 211 to 220 of about 7,037 (232)
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Journal of Economic Entomology, 1992
Temperature thresholds and thermal requirements for egg hatching in an Illinois population of western corn rootworms, Diabrotica virgifera virgifera LeConte, were determined under controlled conditions. Developmental rate for first hatch increased linearly with increasing temperature. The threshold temperature ( t ) and thermal constant ( K ) for first
Eli Levine +2 more
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Temperature thresholds and thermal requirements for egg hatching in an Illinois population of western corn rootworms, Diabrotica virgifera virgifera LeConte, were determined under controlled conditions. Developmental rate for first hatch increased linearly with increasing temperature. The threshold temperature ( t ) and thermal constant ( K ) for first
Eli Levine +2 more
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Permanence and chaos in a host–parasitoid model with prolonged diapause for the host
Communications in Nonlinear Science and Numerical Simulation, 2009Abstract The dynamic behavior of a host–parasitoid model with prolonged diapause for the host is investigated. It is proved that the system is permanent under certain appropriate conditions. Numerical simulations are presented to illustrate consistency with the theoretical analysis.
Min Zhao, Limin Zhang
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Prolonged Pupal Diapause in Thaumetopoea wilkinsoni Tams1
Zeitschrift für Angewandte Entomologie, 1969SummaryData are given to show that pupal diapause in Thaumetopoea wilkinsoni Tarns may persist for six years and longer.The practical aspects of this phenomenon are discussed.
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Oecologia, 1993
Spreading of emergence over several years due to prolonged diapause in some larvae was shown in the chestnut weevil. Depending on the year the larvae buried themselves in the ground, 32-56% of live adults emerged after 2 or 3 years of underground life.
Menu, F., Debouzie, D
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Spreading of emergence over several years due to prolonged diapause in some larvae was shown in the chestnut weevil. Depending on the year the larvae buried themselves in the ground, 32-56% of live adults emerged after 2 or 3 years of underground life.
Menu, F., Debouzie, D
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Occurrence of prolonged diapause in ethmiid moths (Lepidoptera: Gelechioidea)
1974(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
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Journal of Economic Entomology, 1992
Northern corn rootworm, Diabrotica barberi Smith & Lawrence, eggs were obtained from female beetles collected in August 1985 from cornfields in Champaign, Ill., and Madison, S. Dak. Eggs were buried in soil or placed in environmental chambers that closely simulated natural soil temperature conditions and were observed for hatch during 4-5 yr.
Eli Levine +2 more
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Northern corn rootworm, Diabrotica barberi Smith & Lawrence, eggs were obtained from female beetles collected in August 1985 from cornfields in Champaign, Ill., and Madison, S. Dak. Eggs were buried in soil or placed in environmental chambers that closely simulated natural soil temperature conditions and were observed for hatch during 4-5 yr.
Eli Levine +2 more
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PROLONGED DIAPAUSE AND PUPAL SURVIVAL OF PAPILIO-ZELICAON LEPIDOPTERA PAPILIONIDAE
1983(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
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Physiological Entomology, 2009
Abstract Female two‐spotted spider mite Tetranychus urticae are grown under different photoperiods and the photoperiodic regulation of diapause is examined. The photoperiodic response curve for diapause induction was of the long day–short day type, with critical day lengths (
TAKESHI SUZUKI, MAKIO TAKEDA
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Abstract Female two‐spotted spider mite Tetranychus urticae are grown under different photoperiods and the photoperiodic regulation of diapause is examined. The photoperiodic response curve for diapause induction was of the long day–short day type, with critical day lengths (
TAKESHI SUZUKI, MAKIO TAKEDA
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Prolonged diapause in Mormon crickets: Embryonic responses to three measures of time
Journal of Insect PhysiologyMormon cricket eggs can remain diapausing in soil for multiple years without forming an embryo. I investigated whether embryonic development was dependent on the number of annual cycles since the egg was laid, duration of the summer period (forcing), or duration of the winter period (chilling).
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Journal of Asia-Pacific Entomology, 2011
Paratlanticus ussuriensis eggs overwinter by entering diapause, which can be prolonged to more than 1 year depending on environmental conditions. To determine temperature effects on diapause duration of P. ussuriensis eggs, the rates of embryonic development and hatching were compared at various temperatures conditions by measuring embryonic stages and
Hea-Son Bang +6 more
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Paratlanticus ussuriensis eggs overwinter by entering diapause, which can be prolonged to more than 1 year depending on environmental conditions. To determine temperature effects on diapause duration of P. ussuriensis eggs, the rates of embryonic development and hatching were compared at various temperatures conditions by measuring embryonic stages and
Hea-Son Bang +6 more
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