Results 61 to 70 of about 8,839 (212)

Spring bloom dynamics and zooplankton biomass response on the US Northeast Continental Shelf [PDF]

open access: yes, 2015
This paper is not subject to U.S. copyright. The definitive version was published in Continental Shelf Research 102 (2015): 47-61, doi:10.1016/j.csr.2015.04.005.The spring phytoplankton bloom on the US Northeast Continental Shelf is a feature of the ...
Asch, Rebecca G.   +9 more
core   +1 more source

A protracted phenology: Post‐diapause larval development of a threatened butterfly

open access: yesInsect Conservation and Diversity, EarlyView.
Larval survival during diapause was high; hibernaculum webs were mostly located near Succisa pratensis plants, which often retained vital leaves through winter. Post‐diapause developmental time varied strongly depending on exposure to different microclimates, being reduced by litter cover, solar radiation and a higher heat load index.
Gwydion Scherer, Thomas Fartmann
wiley   +1 more source

A damping circadian clock drives weak oscillations in metabolism and locomotor activity of aphids (Acyrthosiphon pisum) [PDF]

open access: yes, 2017
Timing seasonal events, like reproduction or diapause, is crucial for the survival of many species. Global change causes phenologies worldwide to shift, which requires a mechanistic explanation of seasonal time measurement.
Arrazola Sastre, Alazne   +4 more
core   +3 more sources

Daily Rhythms of Sex Pheromone Emission and Courtship Behaviour in the Neotropical Brown Stink Bug Euschistus Heros

open access: yesJournal of Applied Entomology, EarlyView.
ABSTRACT Understanding the chemical and behavioural ecology of the Neotropical brown stink bug, Euschistus heros (Hemiptera: Pentatomidae), is essential for developing effective integrated pest management (IPM) strategies in South American soybean production. This study investigated the courtship behaviour and diel periodicity of sex pheromone emission.
Felipe Goulart Gonçalves   +3 more
wiley   +1 more source

A conceptual model for the diapause intensity curve and termination in overwintering Japanese pine sawyer larvae, Monochamus alternatus (Coleoptera: Cerambycidae)

open access: yesPhysiological Entomology, EarlyView.
Larval diapause intensity of Monochamus alternatus follows a declining curve, beginning with an initial refractory phase and reaching termination after approximately 110 days of chilling at 9°C. Residual inhibitory state strongly influenced post‐chilling development; additional chilling shortened the diapause period more at 18°C than at warmer ...
Myeong Su Go   +2 more
wiley   +1 more source

Effects of light quality and intensity on diapause induction in the two-spotted spider mite, Tetranychus urticae

open access: yesApplied 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 ...
Takeshi Suzuki   +4 more
openaire   +2 more sources

A New Look at Adaptive Body Coloration and Color Change in "Common Green Lacewings” of the Genus Chrysoperla (Neuroptera: Chrysopidae) [PDF]

open access: yes, 2017
Green lacewings in the genus Chrysoperla are not always green. They can be yellow (autosomal recessive mutant); change from whitish-yellow to green as young adults; or temporarily turn yellowish, reddish, or brown during diapause.
Duelli, Peter   +3 more
core  

Divergence of the diapause transcriptome in apple maggot flies: winter regulation and post-winter transcriptional repression [PDF]

open access: yes, 2016
Citation: Meyers, P. J., Powell, T. H. Q., Walden, K. K. O., Schieferecke, A. J., Feder, J. L., Hahn, D. A., . . . Ragland, G. J. (2016). Divergence of the diapause transcriptome in apple maggot flies: winter regulation and post-winter transcriptional ...
Berlocher, S. H.   +8 more
core   +1 more source

Trade‐offs in thermal response: Schizotetranychus brevisetosus winter eggs outperform summer eggs at low temperatures

open access: yesPhysiological Entomology, EarlyView.
We investigated maternal effects in Schizotetranychus brevisetosus (Tetranychidae), where females oviposit summer and winter eggs in response to photoperiod on evergreen hosts. Developmental rates of immature individuals increased linearly from 15°C to 35°C, but winter and summer eggs developed faster at low and high temperatures, respectively ...
Miki Yamawaki, Katsura Ito
wiley   +1 more source

Regulation of the juvenile hormone titre in the Colorado potato beetle [PDF]

open access: yes, 1978
Three main topics were investigated in regulation of the titre of juvenile hormone in haemolymph of the Colorado potato beetle ( Leptinotarsa decemlineata Say): enzymic breakdown of the hormone; binding and protection of the hormone by carrier proteins ...
Kramer, S.J.
core   +1 more source

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