机译:When do yearling male Black-bellied Sandgrouse Pterocles orientalis reach sexual maturation?
Department of Biology, Faculty of Sciences, Ibn Zohr University, Agadir, Morocco;
Laboratory 'Biodiversité et Dynamique des Ecosystèmes', Department of Biology, Faculty of Sciences, Cadi Ayyad University, Marrakech, Morocco;
breeding; histology; Pterocles orientalis; reproduction; sexual maturation; testes;