The probable role of cannibalism in spreading Trichinella papuae infection in a crocodile farm in Papua New Guinea

Between 2003 and 2007, 83 (50%) of 167 crocodiles (Crocodylus porosus) purchased as juveniles by a crocodile farm 3 or 4 years earlier from Kikori, Gulf Province, were found to be infected with Trichinella papuae. Between 2005 and 2007 infection was detected in a number of crocodiles at the farm obt...

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Bibliographic Details
Published in:Veterinary parasitology 2014-07, Vol.203 (3-4), p.335-338
Main Authors: Owen, Ifor L., Awui, Columba, Langelet, Eric, Soctine, Wenda, Reid, Simon
Format: Article
Language:English
Subjects:
Alligators and Crocodiles - parasitology
Animals
Cannibalism
Crocodile farm management
Crocodylus porosus
Female
Male
Papua New Guinea
Parasitic Diseases, Animal - epidemiology
Parasitic Diseases, Animal - transmission
Prevalence
Trichinella
Trichinella papuae
Trichinellosis - epidemiology
Trichinellosis - transmission
Trichinellosis - veterinary
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Summary:Between 2003 and 2007, 83 (50%) of 167 crocodiles (Crocodylus porosus) purchased as juveniles by a crocodile farm 3 or 4 years earlier from Kikori, Gulf Province, were found to be infected with Trichinella papuae. Between 2005 and 2007 infection was detected in a number of crocodiles at the farm obtained from six localities other than Kikori, as well as in a few animals born on the farm. Up to 2004, all juveniles at the farm, whether wild- or farm-born, were penned together; the practice was then stopped to prevent possible infection through cannibalism. The last infected animal from Kikori was seen in 2007, 4 years after the purchase of crocodiles from there ceased. The last non-Kikori infected crocodile was seen, also, in 2007. None of the 1972 crocodiles (comprising wild- and farm-born animals) tested from 2008 to 2013, using the digestion method, was infected with T. papuae. This indicates that infection of non-Kikori crocodiles was the result of cannibalism within the farm during the years up to 2004 when juvenile crocodiles were kept together, and that the farm is now free of the infection.
ISSN:0304-4017
1873-2550
DOI:10.1016/j.vetpar.2014.04.008