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

By Anthony P. Russell, Aaron M. Bauer

ISBN-10: 1552380386

ISBN-13: 9781552380383

Amphibians & reptiles (herpetofauna) are an important yet a lot overlooked component to the common economic climate of the province of Alberta. This moment version, which maintains either as a box advisor & a complete average historical past, builds at the strengths of the 1st, with a richly illustrated textual content, & color images of the species taken via well known natural world photographer, Dr Wayne Lynch. The award-winning first variation got popularity within the Emerald Awards for Environmental Excellence. This moment version has been completely revised & up-to-date. Nomenclature has been replaced to mirror present considering within the box. New photos were additional, & maps & illustrations were up-to-date.

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Additional info for Amphibians and Reptiles of Alberta: A Field Guide and Primer of Boreal Herpetology

Example text

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.

Spadefoots breed in pools that form after heavy rains, or in slow streams, reservoirs or irrigation ditches. The developmental stages are very rapid, as the eggs are often deposited in bodies of water that are only transient. Dry periods are spent in burrows either constructed by other animals or by themselves. When burrowing, spadefoots back into the ground. The family Hylidae is also represented by only a single species in Alberta. The hylids are a large family of slim-waisted, longlegged frogs mostly of small size.

B. 2A. B. 3A. B. 12 to 2 3 5 4 48 AMPHIBIANS AND REPTILES OF ALBERTA 5A. Eggs single or in small clusters (<4 cm in diameter) 6 B. Eggs in larger clusters (>5 cm in diameter) Family Ranidae 9 6A. Eggs single or in compact clusters Family Ambystomatidae 7 B. 5 cm in diameter 8 7A. In mountainous regions of the province Ambystoma macrodactylum B. Normally below ca. 1,000 m elevation Ambystoma tigrinum 8A. Egg mass cylindrical or elliptical, one envelope, SE corner of province only Spea bombifrons B.

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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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