Japanese Journal of Veterinary Research;Volume 33, Number 1-2

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VARIATIONS OF SYNLOPHE OF ORIENTOSTRONGYLUS EZOENSIS TADA, 1975 (NEMATODA : HELIGMONELLIDAE) AMONG DIFFERENT POPULATIONS IN JAPAN

FUKUMOTO, Shin-ichiro;OHBAYASHI, Masashi

Permalink : http://hdl.handle.net/2115/2317
JaLCDOI : 10.14943/jjvr.33.1-2.27
KEYWORDS : Orientostrongylus ezoensis;Rattus norvegicus;synlophe;Japan

Abstract

The cuticular longitudinal ridges on the body surface (synlophe) of the rat nematode, Orientostrongylus ezoensis TADA, 1975, from different host populations in Japan were examined. The number of longitudinal ridges was found to be inconsistent among the populations, i. e., (1) in adult females and males, (2) in nematodes from wild caught hosts, Rattus norvegicus, collected in geographically different areas of Japan, (3) in nematodes recovered from laboratory maintained rats. The number of longitudinal ridges was differed among the various body regions and increased posteriorly. The synlophe was also studied by a scanning electron microscopy.

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