Biogeography of the Amazon molly: ecological niche and range limits of an asexual hybrid species

摘要

ABSTRACTAim To understand the relative contributions of environmental factors, dispersal limitations and the presence of sperm donors in determining the distribution of the Amazon molly (Poecilia formosa), a sperm-dependent unisexual fish species of hybrid origin. To explore niche similarities and/or differences between the hybrid and parental species. To evaluate whether large-scale abiotic factors can explain a successful introduction of both P. formosa and Poecilia latipinna.Location