"Seksualadfærd" . . "SCIENCE / Life Sciences / Zoology / General" . . "Kopulation." . . "Territorialität." . . . . "Biology" . . "SCIENCE / Life Sciences / Biology" . . "Reproduction." . . "Handyr, hanner" . . "Paarbildung (Zoologie)" . . "Territorialité (zoologie)" . . "Males" . . "Females" . . "Balts." . . "Ökologie." . . "Sexual behaviour" . . "Parning beteende." . . "Balzarena." . . "Sexualverhalten." . . "Lek behavior." . . "Comportement sexuel des animaux." . . "Hunner" . . "Parade nuptiale des animaux." . . "Biologi" . . "Paarbildung." . . "Seksuele selectie." . . "Männchen." . . . . . . . . . . . . . . . "Leks" . "Leks"@en . . . . . . . . . "Electronic books"@en . . . . . . . . . . . . . "The evolution of leks - clusters of small territories where males congregate and display in order to attract mates - is of central issue in behavioral ecology because of the insights it offers into female mate choice, sexual selection, and the evolution of mating systems. In the first book on the subject, Jacob Hoglund and Rauno Alatalo draw together existing knowledge on two main aspects of lekking. Why do leks evolve in some species and not in others? Why do females of certain lekking species select their mates even though such behavior reaps few or no material benefits for them? In each case they emphasize the importance of understanding the selective forces that act on individuals in natural populations. Hoglund and Alatalo synthesize the available information on lekking in all animal groups and suggest new areas of research." . . . . . . . . . . . . .