Abstract

A green iguana (Iguana iguana rhinolopa), about 2 years old, died at the Saitama Children's Zoo in May 1996. During the autopsy, 3, 940 nematodes were isolated from the stomach. The parasites were grayish white. Male body length was 2.73±0.36mm; male body depth was 0.45±0.10mm. Female body length was 3.81±0.86mm; female body depth was 0.45±0.10 mm. The nematodes' surfaces were marked with distinct horizontal stripes. Each had a mouth with two lateral lips; an esophagus consisting of an anterior portion and a posterior portion ending in a bulb; and a single, long spicule without a guburnaculum. Oval eggs (120×150×50μm) had micropyles and asymmetrical walls. On the basis of these findings, the nematodes were identified as Ozolaimus megatyphlon.

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