Download Alien Reptiles and Amphibians: a Scientific Compendium and by Fred Kraus PDF

By Fred Kraus

The conservation risk posed by way of invasive alien species has develop into well-recognized over the last twenty years, at the same time the matter maintains to extend swiftly in scope. study and administration realization to this factor has, besides the fact that, been taxonomically biased towards teams having huge, visible affects, and the invasive strength of alternative organisms with sophisticated or cryptic affects continues to be mostly unassessed. Alien reptiles and amphibians, even though delivering the various better-known examples of critical invasion affects, have by no means been scientifically assessed as a gaggle for his or her power invasiveness. This publication examines the ability wherein alien reptiles and amphibians are transported by way of people; surveys their ecological, evolutionary, financial, and health and wellbeing affects; stories the administration responses taken opposed to them; and summarizes the rapid learn and administration efforts had to mitigate the risk posed by way of those organisms. It additionally offers a entire database of herpetofaunal introductions around the world and a bibliography of helping literature; the database is additionally supplied on CD-ROM to be able to facilitate use of the information by way of researchers. the aim of the booklet is to summarize our present realizing of herpetofaunal invasiveness and stimulate extra administration and examine actions had to lessen the affects of those species.

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Extra info for Alien Reptiles and Amphibians: a Scientific Compendium and Analysis (Invading Nature - Springer Series in Invasion Ecology)

Example text

Pathway Variation 37 Contributions of the different taxa to each pathway vary in importance and are generally strikingly different. Indeed, there is a distinctive taxonomic signature for each pathway (Fig. 12). Biocontrol efforts involving reptiles and amphibians have focused almost exclusively on frogs. Transportation via the cargo pathway has been virtually restricted to frogs, lizards, and snakes. This is unsurprising inasmuch as these taxa have many species that are small in size and with broad physiological tolerance.

For governments having the resources, certifying the pest-free status of commodities by examining them prior to export from the country of origin can be a means of improving cleanliness of imported materials. But this option is typically limited to inspection of agricultural commodities for known, high-risk pests. Practical control methods at this stage typically involve inspection for pests, treatment of articles suspected of harboring pests, and exclusion of particular commodities via trade prohibition (Wittenberg and Cock, 2005).

This situation has begun to change over the past 25 years. The rapid spread of cane toads across Queensland by the 1970s, combined with anecdotal reports of their poisoning of native wildlife (Breeden, 1963; Rayward, 1974; Covacevich and Archer, 1975), led to considerable government funding to elucidate these effects, understand the biology of the toad, and identify means by which to control it (Tyler, 2006; T. , 2006). The results of this work were a fairly broad understanding of toad expansion, genetics, and parasites within Australia (cf.

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