Biology Reference
In-Depth Information
Fig. 2.9
Relative importance of pathways of herpetofaunal introduction as measured by total
numbers of species introduced
Fig. 2.10
Relative importance of pathways of herpetofaunal introduction as measured by numbers
of successfully established introductions, with establishment counted only once per jurisdiction
in packaged or unpackaged goods for human use; it specifically excludes those rela-
tively few noted examples of transport in vehicles per se, although frequently that
vehicular movement was for the purpose of transporting cargo. A variety of tropical
geckos serve as archetypal poster children for this pathway. “Food” includes those
deliberate introductions occasioned by the desire to establish a new food resource
in a particular location. Usually, these species, such as
Rana catesbeiana
and
Pelodiscus sinensis
, have been intended for human consumption, but a few species
(e.g.,
Litoria raniformis
and
Rana esculenta
in New Zealand) were originally intro-
duced for the purpose of establishing a food supply for ducks. “Nursery trade”
