Gulf Coast waterdog
© 2010 Michael Graziano (1 of 10)
Sympatric with N. alabamensis in some localities, but these species differ in body shape (near cylindrical in N. beyeri vs. flattened in N. alabamensis), ventral coloration (presence vs. absence of spots), and microhabitat use (living in streambank burrows, and frequently active in the water column vs. shelter under rocks or debris, active on the bottom) (Neill. 1963; Bart et al. 1997).
Distribution and Habitat
Country distribution from AmphibiaWeb's database: United States
U.S. state distribution from AmphibiaWeb's database: Alabama, Florida, Georgia, Louisiana, Mississippi
Life History, Abundance, Activity, and Special Behaviors
Diet items include crayfish, isopods, amphipods, mayflies, dragonflies and sphaeriid clams. Predators are not known, but likely include fish and crayfish (Petranka 1998). Necturus beyeri often occupies burrows in streambanks, and individuals frequently swim in the water column when they are active (Neill 1963). Mudpuppies and waterdogs are nearly inactive in the summer, and individuals are rarely found (Petranka 1998). Animals caught in the autumn may be quite lean compared with their condition in the winter and spring when they are in reproductive readiness (Bart et al. 1997).
Trends and Threats
Relation to Humans
Bart, H. L., Jr., Bailey, M. A., Ashton, R. E., Jr., and Moler, P. E. (1997). ''Taxonomic and nomenclatural status of the Upper Black Warrior River Waterdog.'' Journal of Herpetology, 31, 192-201.
Guttman, S. I., Weigt, L. A., Moler, P. E., Ashton, R. E., Jr., Mansell, B. W. and Peavy, J. (1990). ''An electrophoretic analysis of Necturus form the southeastern United States.'' Journal of Herpetology, 24(2), 163-175.
Neill, W. T. (1963). "Notes on the Alabama waterdog, Necturus alabamensis Viosca." Herpetologica, 19, 166-174.
Petranka, J. W. (1998). Salamanders of the United States and Canada. Smithsonian Institution Press, Washington and London.
Sever, D. M., and Bart, H. L., Jr. (1996). ''Ultrastructure of the spermathecae of Necturus beyeri (Amphibia: Proteidae) in relation to its breeding season.'' Copeia, 1996(4), 927-937.
Shoop, C. R. (1965). "Aspects of reproduction in Louisiana Necturus populations." American Midland Naturalist, 74, 357-367.
Written by Meredith J. Mahoney (molge AT yahoo.com), Museum of Vertebrate Zoology
First submitted 2000-07-26
Edited by M. J. Mahoney (2001-05-09)
Species Account Citation: AmphibiaWeb 2001 Necturus beyeri: Gulf Coast waterdog <http://amphibiaweb.org/species/4224> University of California, Berkeley, CA, USA. Accessed Feb 26, 2017.
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Citation: AmphibiaWeb. 2017. <http://amphibiaweb.org> University of California, Berkeley, CA, USA. Accessed 26 Feb 2017.
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