Download e-book for kindle: Amphibians and Reptiles of Alberta: A Field Guide and Primer by Anthony P. Russell, Aaron M. Bauer

By Anthony P. Russell, Aaron M. Bauer

ISBN-10: 1552380386

ISBN-13: 9781552380383

Amphibians & reptiles (herpetofauna) are an important yet a lot overlooked portion of the average financial system of the province of Alberta. This moment version, which keeps either as a box advisor & a accomplished traditional historical past, builds at the strengths of the 1st, with a richly illustrated textual content, & color photos of the species taken by way of popular natural world photographer, Dr Wayne Lynch. The award-winning first variation acquired acceptance within the Emerald Awards for Environmental Excellence. This moment variation has been completely revised & up to date. Nomenclature has been replaced to mirror present pondering within the box. New images were further, & maps & illustrations were up to date.

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Extra resources for Amphibians and Reptiles of Alberta: A Field Guide and Primer of Boreal Herpetology

Example text

1998; Anon 1964a, b; Corkran and Thorns 1966; Livezey and Wright 1947; Orton 1952; Petranka 1998; Powell et al. 1998; Savage 1959; Wright 1929. Species Accounts LONG-TOED SALAMANDER Ambystoma macrodactylum Description: Adult: Total length 80-120 mm (snout-vent length about 37-58 mm). A relatively slender salamander with an oval head, blunt snout and rather large eyes with the iris tinged with bronze. Normally twelve costal grooves on each side of the body. Limbs slender, toes narrow, elongate and unwebbed.

Boids and pythons feed mainly on mammals and kill them by constriction. Members of the families Elapidae and Viperidae subdue prey with venom, injected by way of fangs and produced in modified salivary glands. These families include snakes that are dangerous to man and are thus regarded as being truly venomous. Many members of the Family Colubridae, however, that are normally regarded as harmless do, in fact, produce venom, although this is not usually powerful enough to be dangerous to humans.

One species of Pituophis occurs in Alberta. This is the gopher snake or bullsnake (P. catenifer), a large yellow or cream-coloured snake with black, brown, or reddish brown dorsal blotches. This species lives in a variety of habitats throughout North America, from the lowlands high into the mountains and from coast to coast. It frequents desert, prairie, brushland, woodland, coniferous forests, and farmland. It is a good climber and burrower and is active chiefly by day, except in hot weather. When aroused, it hisses loudly and sometimes flattens its head and vibrates its tail.

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Amphibians and Reptiles of Alberta: A Field Guide and Primer of Boreal Herpetology by Anthony P. Russell, Aaron M. Bauer

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