Insects in Winter

Upper lethal temperatures in three cold-tolerant insects are higher in winter than in summer.

Upper lethal temperatures (ULTs) of cold-adapted insect species in winter have not been previously examined. We anticipated that as the lower lethal temperatures (LLTs) decreased (by 20-30°C) with the onset of winter, the ULTs would also decrease accordingly. Consequently, given the recent increases in winter freeze-thaw cycles and warmer winters due to climate change, it became of interest to ...

Diversity and Abundance of Insects in Wukari, Taraba State, Nigeria

A field survey was conducted in Wukari, Taraba State to assess the diversity and abundance of insect species in selected habitats (residential, open field made up of grassland and an agroecosystem). Sampling were done biweekly using light, pitfall and yellow pan traps set in 3 replicates, 30 m apart. Insects recovered were wet preserved in 70% ethanol except butterflies and moths. Representativ...

Aquatic Insects: Hemimetabolous Insects – Plecoptera

Neuropeptide signaling in insects.

Neuropeptides represent the largest single class of signal compounds and are involved in regulation of development, growth, reproduction, metabolism and behavior of insects. Over the last few years there has been a tremendous increase in our knowledge of neuropeptide signaling due to genome sequencing, peptidomics, gene micro arrays, receptor characterization and targeted gene interference comb...

Spatial memories in insects

whether enough blood circulated in or around the plates to ensure such a function. Furthermore, while the large, flat plates of Stegosaurus might have been thermoregulatory, it is less easy to imagine this working in the spike-like osteoderms of Kentrosaurus. Another possibility is that the plates had a behavioural function, and were used in either sexual selection (there is no apparent sexual ...