| evaluation of pre- and post-zygotic mating barriers, hybrid fitness and phylogenetic relationship between cyprinodon variegatus variegatus and cyprinodon variegatus hubbsi (cyprinodontiformes, teleostei). | the euryhaline fish cyprinodon variegatus variegatus (cvv) is capable of tolerating ambient salinities ranging from 0.3 to 167 g l(-1) , but incapable of long-term survival in freshwater (< 2 mm na(+) ). however, a population of this species, now designated as a subspecies (cyprinodon variegatus hubbsi; cvh), has been isolated in several freshwater (0.4-1 mm na(+) ) lakes in central florida for the past ~150 ky. we previously demonstrated that cvh has a significantly higher affinity for na(+) up ... | 2013 | 23480788 |