The British Herpetological Society

The Herpetological Journal is the Society's prestigious quarterly scientific journal. Articles are listed in Biological Abstracts, Current Awareness in Biological Sciences,Current Contents, Science Citation Index, and Zoological Record.

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pdf 03. PITs versus patterns effects of transponders on recapture rate and body condition of Danube crested newts (Triturus dobrogicus) and common spadefoot toads (pelobates fuscus)

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Open Access

pp.181-186

Authors: Robert Jehle And Walter Hödl

Abstract: During a long-term study (1987-1996) near Vienna (Austria), individual Danube crested newts ( Triturus dobrogicus) and common spadefoot toads (Pelobates fuscus) were registered by photographs of highly variable skin patterns, and the implantation of Passive Integrated Transponders (PIT tags). To test for potential detrimental effects of the electronic tags, we compared within-year (for P. fuscus) and between-year (for T. dobrogicus) recapture rates and body condition index (Cl) of individuals marked with the two alternative techniques. No significant negative effects of PIT tags on Cl and recapture rate could be demonstrated for either species. There was a decrease in body condition and recapture rates in the study years 1995 and 1996, but can be attributed to population trends rather than to the different marking methods. For recaptured T. dobrogicus a I 0.5% loss of PIT tags was observed.

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