The indirect effects of predation have been the focus of many studies on predator-prey interactions. One way in which predators can indirectly affect prey life history is by altering habitat selection. For prey that occupy different habitats as adults than as larvae, it is likely important for adults to consider potential predators of their offspring when selecting a suitable place to lay their eggs. I studied the ability of adult 'Enallagma' damselflies to detect fish, which, for some species, are important predators of damselfly larvae. I found that adult 'Enallagma ebrium' could detect and avoid fish during visits to a site, but that oviposition frequency and duration were unaffected by fish presence. Subsequently, I attempted to establish how adults of three 'Enallagma' species detect fish, but was unsuccessful in determining whether visual presence or chemical cues were used in predator detection. As well, I performed additional experiments on these three species to determine whether fish chemical cues would affect the number of eggs released by females during oviposition. For each species, I found that the number of eggs released was not affected by the presence of fish chemical cues. Other researchers have established that larval damselflies are capable of visual predator detection, but there is also evidence that damselfly larvae can detect predator chemical cues if they are paired with the cues of dead conspecifics. Therefore, I designed a study to determine the relative importance of visual and chemical cues to predator detection by larvae. Frequency and duration of larval behaviours were reduced by visual fish presence and by fish chemical cues. As well, the season in which the experiment was performed produced a significant difference in the frequency of behaviours, with a higher frequency in the spring than the fall when the larvae are in diapause.

Dragonflies and damselflies are conspicuous insects: many are large and brightly coloured. They are also valuable indicators of environmental wellbeing. A detailed knowledge of the dragonfly fauna is therefore an important basis for decisions about environmental protection and management. This comprehensive guide to the Australian dragonfly fauna covers eight families of dragonflies and 10 families of damselflies, comprising the 113 genera and 333 species found in Australia. It has been updated with newly identified species and revised family names to reflect new world consensus systematics. Stunning full-colour images and distribution maps are accompanied by identification keys for adults as well as larvae, which are often used as bait for freshwater fish. This second edition of The Complete Field Guide to Dragonflies of Australia also includes illustrations by Albert Orr, one of the most renowned dragonfly illustrators. The extraordinary diversity of dragonflies will interest entomologists and amateur naturalists alike.

"The third edition of Ecology and Classification of North American Freshwater Invertebrates continues the tradition of in-depth coverage of the biology, ecology, phylogeny, and identification of freshwater invertebrates from the USA and Canada. This text serves as an authoritative single source for a broad coverage of the anatomy, physiology, ecology, and phylogeny of all major groups of invertebrates in inland waters of North America, north of Mexico." --Book Jacket.