New Dog Parasite (Toxocara canis) Discoveries at Melanesian and Polynesian Sites in Tropical Remote Oceania

M. Horrocks; S. Bedford; J. Flexner; F. Valentin; E. Cochrane; M. S. Allen; D. Burley; P. V. Kirch; B. Presswell

doi:10.2984/78.1.2

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7 October 2024 New Dog Parasite (Toxocara canis) Discoveries at Melanesian and Polynesian Sites in Tropical Remote Oceania

M. Horrocks, S. Bedford, J. Flexner, F. Valentin, E. Cochrane, M. S. Allen, D. Burley, P. V. Kirch, B. Presswell

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Pacific Science, 78(1):19-30 (2024). https://doi.org/10.2984/78.1.2

Abstract

Little is known of helminth parasites of tropical Remote Oceania, in either archaeological or modern contexts. This study presents a parasitological analysis of soil samples from Lapita and Polynesian contexts in Vanuatu, Fiji, Tonga, Samoa, the Marquesas Islands, and the Gambier Islands. Microscopic eggs of the dog (Canis familiaris) nematode Toxocara canis, which could have adversely affected local people and their dogs, were found at all sites. We comment on the variability in size and appearance of T. canis eggs found in archaeological contexts and compare these differences to modern reference eggs. The study represents the first confirmed record of pre-European helminth parasites in tropical Remote Oceania, and the first confirmed physical evidence of dog in Vanuatu.

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M. Horrocks, S. Bedford, J. Flexner, F. Valentin, E. Cochrane, M. S. Allen, D. Burley, P. V. Kirch, and B. Presswell "New Dog Parasite (Toxocara canis) Discoveries at Melanesian and Polynesian Sites in Tropical Remote Oceania," Pacific Science 78(1), 19-30, (7 October 2024). https://doi.org/10.2984/78.1.2

Accepted: 21 March 2024; Published: 7 October 2024

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