Spider Ecophysiology

Spiders number more than 43,000 species, making them the biggest group of predatory arthropods. Over roughly 300 million years they have evolved specialised traits, including silk that serves many purposes, venom made of hundreds of compounds, and legs moved by muscles and fluid pressure. Their genital structures also fit together in a highly refined lock-and-key arrangement. Today spiders live in every terrestrial habitat, which makes them among the most widely distributed land animals.

This book approaches spiders through ecophysiology, which joins the functional and evolutionary study of morphology, physiology, biochemistry and molecular biology with ecology. It covers current research on the circulatory and respiratory systems, locomotion and dispersal, immunity, endosymbionts and pathogens, chemical signalling, glandular secretions, venom components, silk structure, colour perception and nutritional needs.

The text also explains why spiders matter in practical settings. They serve as indicator species in farmland ecosystems and in conservation work. Researchers are also studying spiders and their products for biomimetics, materials science, and agrochemical and pharmaceutical applications.