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Failed Species, Innominate Forms, And The Vain Search For Species Limits: Cryptic Diversity In Dusky Salamanders (Desmognathus) Of Eastern Tennessee, Stephen G. Tilley, Joseph Bernardo, Laura A. Katz, Lizmarie López, J. Devon Roll, Renáe L. Eriksen, Justin Kratovil, Noëlle K.J. Bittner, Keith A. Crandall
Failed Species, Innominate Forms, And The Vain Search For Species Limits: Cryptic Diversity In Dusky Salamanders (Desmognathus) Of Eastern Tennessee, Stephen G. Tilley, Joseph Bernardo, Laura A. Katz, Lizmarie López, J. Devon Roll, Renáe L. Eriksen, Justin Kratovil, Noëlle K.J. Bittner, Keith A. Crandall
Biological Sciences: Faculty Publications
Cytochrome B sequences and allozymes reveal complex patterns of molecular variation in dusky salamander (Desmognathus) populations in eastern Tennessee. One group of allozymically distinctive populations, which we refer to as the Sinking Creek form (SCF), combines morphological attributes of Desmognathus fuscus with cytB sequences characteristic of Desmognathus carolinensis. This form is abruptly replaced by D. fuscus just north of Johnson City, TN with no evidence of either sympatry or gene exchange. To the south, allozymic markers indicate a broad zone of admixture with populations characterized by distinct cytB sequences and that may or may not be ultimately referable to Desmognathus …