Results 131 to 140 of about 34,695 (231)

What Goes First? Effects of Starvation on the Body Condition of a Neotropical Dung Beetle

open access: yesEntomologia Experimentalis et Applicata, Volume 174, Issue 4, Page 321-328, April 2026.
We investigated how prolonged starvation affects key physiological traits in the dung beetle Dichotomius bos. Prolonged starvation leads to significant reductions in body dry mass and fat reserves, while muscle mass remains unchanged. These findings indicate that dung beetles prioritize the maintenance of locomotor muscles while mobilizing stored ...
Leonardo Vilas‐Bôas M. P. de Cerqueira   +5 more
wiley   +1 more source

Sélection de lignées à taux et durées de diapause différents chez Heliothis armigera Huebner (Lép. Noctuidae), souche d'origine tropicale, élevée à 25°C et 12 heures d'éclairement [PDF]

open access: yes, 1986
Une souche d'Heliothis armigera originaire de Côte d'Ivoire a été sélectionnée en deux lignées : l'une à faible taux de diapause, l'autre à fort taux de diapause.
Giret, Michel
core  

Rainfall shapes the physiological condition, but not the body size, of an introduced dung beetle in Brazilian pastures

open access: yesEcological Entomology, Volume 51, Issue 2, Page 346-355, April 2026.
Understanding rainfall‐driven physiological shifts in dung beetles is crucial to predict how climate change may affect the fitness and persistence of key insect species in tropical pastures. We compared body size, dry, lipid and muscle masses of Digitonthophagus gazella collected during dry and rainy seasons in Brazilian pastures to assess the effects ...
Cleilsom M. Cristaldo   +4 more
wiley   +1 more source

Effect of temperature on growth and development of rice weevil [Sitophilus oryzae (L.) (Coleoptera: Curculionidae)] on polished rice

open access: yesAgrosystems, Geosciences &Environment, Volume 9, Issue 1, March 2026.
Abstract Rice weevils (Sitophilus oryzae), a major storage pest, cause both qualitative and quantitative losses of stored grains. Normally, chemical insecticide along with fumigation is practiced for the management, but it creates health hazards. So, this study investigates the effects of temperature and duration of exposure on rice weevils. Completely
Tapon Kumar Roy   +8 more
wiley   +1 more source

Molecular Correlates of Diapause in Aphidoletes aphidimyza

open access: yesInsects
The aphidophagous gall midge, Aphidoletes aphidimyza (Rondani) (Diptera: Cecidomyiidae), a dominant natural enemy of aphids, has been used as a biological control agent in many countries to control aphids in greenhouses.
Xiaoyan Dai   +10 more
doaj   +1 more source

Lipid Metabolism in Diapause

open access: yes
Organisms living in temperate and polar environments encounter seasonal fluctuations that entail changes in temperature, resource availability, and biotic interactions. Thus, adaptations for synchronizing the life cycle with essential resources and persisting through unfavorable conditions are critical.
Toprak, Umut   +3 more
openaire   +3 more sources

Butterfly Diversity in a Sacred Kaya Forest in Southern Kenya

open access: yesEcology and Evolution, Volume 16, Issue 3, March 2026.
In this study we analysed the butterfly communities in a tropical coastal forest patch and the surrounding anthropogenic ecosystems. Although both abundance and species richness were lowest inside the natural forest, vulnerable forest specialists were restricted to the forest interior and absent from all anthropogenic landscapes.
Laura Wagner   +4 more
wiley   +1 more source

Drought‐driven lipid deficits in overwintering monarch butterflies revealed by δ2H and fatty acid analysis

open access: yesEcosphere, Volume 17, Issue 3, March 2026.
Abstract Eastern populations of monarch butterflies (Danaus plexippus) overwinter in the central trans‐volcanic belt of Mexico, relying primarily on lipids accumulated during migration to sustain this several‐month‐long overwintering period. This study shows how drought conditions in north‐central Mexico influenced lipid dynamics in monarchs ...
Libesha Anparasan   +5 more
wiley   +1 more source

Diapause, pollen ball incidence, and overwintering energetics in the alfalfa leafcutting bee, Megachile rotundata

open access: yesFrontiers in Bee Science
IntroductionWarming summer temperatures have the potential to harm managed pollinators, impacting both summer performance and overwintering success. The alfalfa leafcutting bee, Megachile rotundata, is a solitary bee used for commercial pollination of ...
Preetpal Singh   +7 more
doaj   +1 more source

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