This is the first comprehensive treatment of a major order of arachnids featuring more than 6,000 species worldwide, familiar in North America as daddy-longlegs but known scientifically as the Opiliones, or harvestmen. The 25 authors provide a much-needed synthesis of what is currently known about these relatives of spiders, focusing on basic conceptual issues in systematics and evolutionary ecology, making comparisons with other well-studied arachnid groups, such as spiders and scorpions. Broad in scope, the volume is aimed at raising relevant questions from a diversity of fields, indicating areas in which additional research is needed. The authors focus on both the unique attributes of harvestmen biology, as well as on biological studies conducted with harvestmen species that contribute to the understanding of behavior and evolutionary biology in general. By providing a broad taxonomic and ecological background for understanding this major arachnid group, the book should give field biologists worldwide the means to identify specimens and provide an invaluable reference for understanding harvestmen diversity and biology.

"Sexual Selection: Perspectives and Models from the Neotropics" presents new sexual selection research based upon neotropical species. As neotropical regions aredestroyed at an alarming rate, with an estimated 140 species of rainforest plants and animals going extinct every day, it is important to bring neotropical research to the fore now.

Sexual selection occurs when the male or female of a species is attracted by certain characteristics such as form, color or behavior. When those features lead to a greater probability of successful mating, they become more prominent in the species. Although most theoretical concepts concerning sexual selection and reproductive strategies are based upon North American and European fauna, the Neotropical region encompasses much more biodiversity, with as many as 15,000 plant and animal species in a single acre of rain forest.

This book illustrates concepts in sexual selection through themes ranging from female cryptic choice in insects, sexual conflict in fish, interaction between sexual selection and the immune system, nuptial gifts, visual and acoustic sexual signaling, parental investment, to alternative mating strategies, among others. These approaches distinguish "Sexual Selection" from current publications in sexual selection, mainly because of the latitudinal and taxonomic focus, so that readers will be introduced to systems mostly unknown outside the tropics, several of which bring into question some well-established patterns for temperate regions.
Synthesizes sexual selection research on species from the NeotropicsCombines different perspectives and levels of analysis using a broad taxonomic basis, introducing readers to systems mostly unknown outside the tropics and bringing into question well-established patterns for temperate regionsIncludes contributions exploring concepts and theory as well as discussions on a variety of Neotropical vertebrates and invertebrates, such as insects, fish, arthropods and birds"