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Biol Bull 106: 107-121. (February 1954)
© 1954 Marine Biological Laboratory
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STUDIES ON THE HELMINTH FAUNA OF ALASKA. XVII. NOTES ON THE INTERMEDIATE STAGES OF SOME HELMINTH PARASITES OF THE SEA OTTER

EVERETT L. SCHILLER 1

1 Arctic Health Research Center, Anchorage, Alaska

1. Two species of fishes, Lebius superciliosus and Hemilepidotus hemilepidotus, serve as the intermediate host for Porrocaecum decipiens. Observations indicate that L. superciliosus is the most important source of the nematode infections acquired by the sea otter on the Aleutian Island of Amchitka.

2. The morphological characteristics of the developmental stages of P. decipiens from fish and the sea otter are described.

3. A hermit crab, Pagurus hirsutiusculus, has been found to harbor the metacercariae of Microphallus pirum, an important parasite of the sea otter at Amchitka, and this larval stage is described.

4. Some ecological relationships which favor a high degree of parasite survival at Amchitka are discussed.






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Copyright © 1954 by the Marine Biological Laboratory.