The evolution of eusociality in Hymenoptera—encompassing bees, ants, and wasps—is
characterized by multiple gains and losses of social living, making this group a prime model …

Steroid hormones are responsible for coordinating many aspects of biological processes in
most multicellular organisms, including insects. Ecdysteroid, the principal insect steroid …

Employing the clear, student-friendly style that made previous editions so popular, Insect
Physiology and Biochemistry, Fourth Edition presents an engaging and authoritative guide …

A pair of Y-organs (YOs) are the molting glands of decapod crustaceans. They synthesize
and secrete steroid molting hormones (ecdysteroids) and their activity is controlled by …

During postembryonic life, hormones, including ecdysteroids, juvenile hormones, insulin-like
peptides, and activin/TGFβ ligands act to transform the larval nervous system into an adult …

Graphical abstract Abstract 7-Ketocholesterol (or 7-oxocholesterol) is an oxysterol
essentially formed by cholesterol autoxidation. It is often found at enhanced levels in the …

The steroid hormone 20-hydroxy-ecdysone (20E) promotes proliferation in Drosophila wing
precursors at low titer but triggers proliferation arrest at high doses. Remarkably, wing …

Prometryn, a widely used triazine herbicide in agriculture and aquaculture, has been
commonly detected in marine environments, but its effects on the marine copepod are …

Exoskeletons are a defining character of all arthropods that provide physical support for their
segmented bodies and appendages as well as protection from the environment and …

In multicellular organisms, endocrine factors such as hormones and cytokines regulate
development and homoeostasis through communication between different organs. For …