Scanning electron microscopy on Ixodes signatus nymphs with particular reference to major physiological sensory organs

Kang, Y.B. . Veterinary Research Institute

Scanning electron microscopy on Ixodes signatus nymphs with particular reference to major physiological sensory organs

1988

Kang, Y.B. (Rural Development Administration, Anyang (Korea R.). Veterinary Research Institute)

Ixodes signatus nymphs were subjected to the scanning electron microscopy for the observation of the major physiological sense organs including Haller's organ. Funger prints and variable sensory setae were found on the body surface, and especially well developed setae were identified on the article IV and on the anal lobes. A central button-like organelle and numerous small holes were found in the spiracular plate. The Haller's organ was identified at the distal point of the tarsus I and regarded as the major sensory organ, chemoreceptor. Two types of sensory setae were observed, the shorter ones in front of the organ and the longer ones in distal front as well as behind the organ. The fully opened organ was ellipsoidal and a total of seven basiconic sensory pegs rooted deeply and shaped like well arranged hooks were found inside the organ

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