This book presents topical research on human and animal mating strategies, gender differences and environmental influences. Topics include the mating effects on female reproductive organs and the paradigm of oestrogen signalling pathways in the oviduct; sexual maturation, mating strategies and neuroendocrinology in social insects; plasticity in mating patterns of a benthic nest-holding fish related to the effects of nest-site abundance and social interactions; and human sexual strategies of short-term mating and parental control over mate choice.