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Posted by naguibo on December 04, 2002 at 16:43:46:
In Reply to: Introduced species posted by jbmac on December 02, 2002 at 14:07:32:
Re: xenopus
"This aquatic frog was widely maintained in laboratories and hospitals for many years, as well as being imported for the pet trade. Its most well known laboratory use was in pregnancy testing. This has resulted in a number of extensions to its range occuring across the world. Two areas are known in the UK, where these animals have reproduced in the wild- one on the Isle of Wight, where the species was known to be present until the mid 1970s, and one in South Wales, known still to be present in the late 1990s. The South Wales populations have been studied in some detail (Measey & Tinsley, 1998), and there is evidence for repeated, if infrequent, breeding. The largest population found composed over 1000 individuals."
When much younger (about 9ish maybe?) i saw huge (huge - ie dozens per square metre!) numbers of these frogs in a pond in a holiday resort in torquay! I am 99.9% they were xenopus.
Id never thoguht about it until now...
Mark (naguibo, newtboy)
