The parasites of the Polynesian rat: biogeography and origins of the New Zealand parasite fauna
1991
Roberts, M.
Unique aspects of the prehistory and current distribution of the Polynesian rat (Rattus exulans Peale) have been applied to the problem of determining the biogeographical origin of its parasites as found on 'exulans only' islands of New Zealand. The database consists of collated records of both endo- and ectoparasites reported from throughout this rat's geographical range. The analytical method is based on the concepts of Sprent (1969. Immunity to Parasitic Animals, pp. 14-17) and includes the formulation and testing of two hypotheses. A total of six 'heirloom' species is identified, and a further seven are classified as 'old souvenirs'. Contrary to prediction, 11 species are considered to be 'new souvenirs', acquired from other rodent species now present in New Zealand.
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