This book is divided into five sections. The first section is about Biology and Ecology, and includes the following chapters: "Crustacean", "The robber crab Birgus latro (Linnaeus, 1767)", "Scyllarid lobster biology and ecology", "Management of the interaction and cannibalism of postlarvae and adults of the freshwater shrimp Cryphiops caementarius (Molina, 1782)", "Bateman gradients and alternative mating strategies in a marine isopod", and "The habitat types of freshwater prawns (Palaemonidae: Macrobrachium) with abbreviated larval development in Mesoamerica (Mexico, Guatemala