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[15] [16] The common mudpuppy never leaves its aquatic environment and therefore does not undergo morphogenesis; however, many salamanders do and develop differentiated teeth. [17] Aquatic salamander teeth are used to hinder escape of the prey from the salamander; they do not have a crushing function. [17] This aids the salamander when feeding.
The family Proteidae is a group of aquatic salamanders found today in the Balkan Peninsula and North America. The range of the genus Necturus (commonly known as waterdogs or mudpuppies) runs from southern central Canada, through the midwestern United States, east to North Carolina and south to Georgia and Mississippi. [1]
Other closely related salamanders in the same family are in the genus Andrias, which contains the Japanese and Chinese giant salamanders. The hellbender is much larger than any other salamander in its geographic range, and employs an unusual adaption for respiration through cutaneous gas exchange via capillaries found in its lateral skin
[9] [10] Some of the largest terrestrial salamanders, which goes through full metamorphosis, belongs to the family of Pacific giant salamanders, and are much smaller. [11] Most salamanders are between 10 and 20 cm (4 and 8 in) in length. [12]
The western waterdog (Necturus beyeri) [2] is a species of aquatic salamander in the family Proteidae. It is endemic to the deep South, where it occurs in Alabama, Louisiana, Mississippi, and Texas. [1]
Amphiuma is a genus of aquatic salamanders from the United States, [2] the only extant genus within the family Amphiumidae / æ m f ɪ ˈ juː m ɪ d iː /. [3] They are colloquially known as amphiumas. [2]
The Chinese giant salamander (Andrias davidianus) is one of the largest salamanders and one of the largest amphibians in the world. [4] It is fully aquatic, and is endemic to rocky mountain streams and lakes in the Yangtze river basin of central China. It has also been introduced to Kyoto Prefecture in Japan, and possibly to Taiwan.
The mud salamander inhabits swamps in low elevations, bogs, seeps, springs, and streams that not only provide a muddy bottom, but also clean and clear water. The mud salamander, a burrowing species, seeks shelter in burrows beneath leaf litter, logs, stones, or bark. The mud salamander may also build tunnels in creek banks, as well.