Aspects of the Life History of the Smoky Madtom, Noturus baileyi Taylor, in Citico Creek

A two-year study of certain aspects of the life history of the smoky madtom, Noturus baileyi Taylor, in Citico Creek was conducted from 1981 to 1983. This species was rheophilic in the summer and fall and a pool dweller during the winter and spring. Smoky madtoms occupied the undersides of palm-sized slabrocks to the exclusion of other species in both habitats. N. baileyi lives at least 2+ years and possibly 3+ years, with females attaining greater lengths than males. Individuals of both sexes generally matured at two years; however some one-year-old individuals showed adult characteristics. Nests were located under large, flat rocks during June and July; clutch size in four nests averaged 36 eggs. As reported for other species of Noturus, the male guarded the nest. The distribution of N. baileyi in Citico Creek was directly related to stream gradient and a soil association. Consideration for Endangered Species status is discussed and suggestions for further study are given.