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Ecology And Population Demography Of The Hellbender, Cryptobranchus Alleganiensis, In West Virginia, W. Jeffrey Humphries
Ecology And Population Demography Of The Hellbender, Cryptobranchus Alleganiensis, In West Virginia, W. Jeffrey Humphries
Theses, Dissertations and Capstones
Using mark-recapture, I studied the population demography and habitat use of the hellbender, Cryptobranchus alleganiensis, in the West Fork of the Greenbrier River, Pocahontas County, West Virginia. Eighteen nocturnal surveys were conducted between April and October, 1998, during which 29 hellbenders were implanted with permanent tags. Male to female sex ratio was 1.06:1. Hellbenders were sexually dimorphic, as females were significantly longer and heavier than males. Total lengths for all captured animals ranged from 29.5 - 56.5 cm and mass ranged from 150.0 - 905.8 g. Seasonal linear movements for 12 individuals ranged from 0.8 - 70.2 m (mean …