The hellbender (cryptobranchus alleganiensis), also known as the hellbender salamander, is a species of aquatic giant salamander endemic to eastern north america a member of the family cryptobranchidae, the hellbender is the only member of the genus cryptobranchus, and is joined only by one other genus of salamanders (andrias, which contains the japanese and chinese giant salamanders) at the. The ozark hellbender is in danger of extinction due to population declines over the last 15 years and the threats that caused those declines the us fish and wildlife service has listed this subspecies as endangered under the endangered species act of 1973 endangered is defined by the. Eastern hellbender the eastern hellbender is a large, stout-bodied, fully aquatic salamander its color is usually brown with darker (or lighter) markings on the back, but can range from gray, to yellowish brown to almost black. For these reasons, eastern hellbenders are found in very few places, even though their range spans 14 states (a subspecies, the ozark hellbender, occupies two states) pennsylvania, new york, virginia and west virginia list the eastern hellbender as a species of special concern maryland classifies its population as endangered. The eastern hellbender or wehrle's salamander time to weigh in the stage is now set for the great salamander showdown with the introduction thursday of house bill 2328 (reed-r-indiana) designating the wehrle's salamander as the official state amphibian of pennsylvania ( sponsor summary .
Will the official state amphibian be the rare, large eastern hellbender symbol of clean water or the more common, smaller wehrle salamander discovered by pennsylvania's rw wehrle a scientific source told pa environment digest there is a possible compromise to this senate-house dilemma. The hellbender (cryptobranchus alleganiensis), also known as the hellbender salamander, is a species of giant salamander endemic to eastern north america  a member of the cryptobranchidae family, hellbenders are the only members of the cryptobranchus genus, and are joined only by one other genus of salamanders ( andrias , which contains the. Population of the imperiled eastern hellbender (cryptobranchus alleganiensis) all of these species all of these species require clean, cold water with high levels of dissolved oxygen (spoor 1990), low percentages of fine.
Pick your favorite nickname for the eastern hellbender salamander they're the color of mud, and they can grow up to 2 feet long people call them snot otters because they're covered in a layer of. Although two hellbender subspecies are recognized, the eastern hellbender and the ozark hellbender, the taxonomic differentiation between hellbender subspecies is not well agreed upon by experts, and discussion continues on whether the eastern hellbender and the ozark hellbender are distinct species or subspecies (mayasich et al 2003, p 2. 6 discovering the watershed lesson plan teacher's notes watershed a watershed is the area of land where all of the water drains into the same place watersheds can be composed of creeks, streams, rivers, ponds. The presence of hellbenders indicates that a stream has good water quality and has been that way for a long time because these salamanders are long lived.
Hellbenders often use the same rock over and over for 30 years or more, and it takes years for those rocks to settle in the riverbed and develop perfect hellbender crevices below lifting up that perfect rock might give you a glimpse of a hellbender, but it might destroy a hellbender's home forever. Recent research conducted in the hopkins lab on eastern hellbender physiology makes the cover of general and comparative endocrinology hopkins, wa, durant, se 2011 innate immunity and stress physiology of eastern hellbenders ( cryptobranchus alleganiensis ) from two stream reaches with differing habitat quality. 1 executive summary although the hellbender has been identified as a species of greatest conservation need by the northeast association of fish and wildlife agencies (neafwa), there remain substantial data gaps in its distribution. Background the eastern hellbender (cryptobranchus alleganiensis alleganiensis) is declining in many parts of its range  and has been identified as a species of greatest conservation need by the.
Through a mail survey of 541 residents and riparian landowners in the area surrounding the blue river watershed of southern indiana, we examined perceptions and intended behaviors toward the eastern hellbender (cryptobranchus alleganiensis alleganiensis), an aquatic salamander experiencing drastic population declines due to anthropogenic causes. A series of mark-recapture studies has been conducted in missouri starting with nickerson and mays (1973b), who estimated abundance at 1,142 hellbenders in a 267-km stretch of the north fork river (white river drainage) in 1969 and 269 hellbenders in a single riffle (4,600 m2) in the same river in 1970. Hellbender is a docu-drama with a very interesting pattern of military and human progression it is also a collection of little-known vietnam war facts, most of which were only made public during or after 1995 by the release of us government documents. With its huge, flat head and slimy skin, the eastern hellbender won't win any beauty contests it's picked up such unflattering nicknames as snot otter and old lasagna sides but because the rarely seen giant salamander can only live in the most pristine of streams, a small group of.
The population of eastern hellbenders (cryptobranchus alleganiensis alleganiensis) in the blue river, indiana has undergone a dramatic decline over the last decade recruitment in these declining populations has been negligible, and populations are now composed almost entirely of older age classes (upwards of 20 yea. Purdue extension - help the hellbender - department of forestry and natural resources this website contains information about the eastern hellbender, a salamander found in the blue river watershed in southern indiana. Here, i will provide a broad overview of major threats to hellbenders in virginia including habitat degradation, introduction of nonnative trout, persecution and fishing, parasites and pathogens, population isolation due to dams, and climate change.
Historically, fishermen killed hellbenders, especially in trout streams, because they (wrongly) believed that hellbenders ate large quantities of fish (crayfish are their main diet) in fact, in the early 1920s and 1930s, a bounty of twenty-five cents per hellbender was established in some areas. Description the eastern hellbender (cryptobranchus alleganiensis alleganiensis) is a large, stout-bodied, fully-aquatic salamanderits color is usually brown with darker (or lighter) markings on the back, but can range from gray, to yellowish brown to almost black. Aspects of eastern hellbender natural history from north-central pennsylvania peter j petokas (lycoming college) i studied eastern hellbender ( cryptobranchus a alleganiensis ) populations in the susquehanna river watershed.