Host utilization by the anuran acanthocephalan Pseudoacanthocephalus bufonis (Echinorhynchidae) on two subtropical islands, southern Japan

Nagasawa Kazuya

Yoshida Ryuta

Biogeography

Both Iriomote-jima Island and Ishigaki-jima Island belong to the Ryukyu Islands and are located in the subtropical region of Japan. The echinorhynchid acanthocephalan Pseudoacanthocephalus bufonis (Shipley, 1903) was found to parasitize two species of frogs, Fejervarya sakishimensis Matsui, Toda & Ota, 2007 (Dicroglossidae) and Buergeria japonica (Hallowell, 1861) (Rhacophoridae), on Iriomote-jima Island, and one species of toad, Rhinella marina (Linnaeus, 1758) (Bufonidae), on Ishigaki-jima Island. No P. bufonis parasitized Rhacophorus owstoni (Stejneger, 1907) (Rhacophoridae) and Microhyla okinavensis Stejneger, 1901 (Microhylidae) on Iriomote-jima Island. Importance of frogs as the host of P. bufonis differs between host species on this island: F. sakishimensis was very frequently infected and is considered to be the most important host of P. bufonis, but since B. japonica was rarely infected and none of R. owstoni and M. okinavensis was parasitized, the role of these three frogs as the hosts of P. bufonis appears very low. This study also suggests that P. bufonis is native to Iriomote-jima Island.

Pseudoacanthocephalus bufonis

Acanthocephala

anuran parasite

host utilization

Iriomote-jima Island

Ishigaki-jima Island

Ryukyu Islands

動物学 [ 480 ]

英語

日本生物地理学会

(c) 日本生物地理学会

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[ISSN] 1345-0662

[NCID] AA11381320