Author/Editor		Pehani, Špela
Title		Internevroni cerkalnega sistema jamske kobilice Troglophilus neglectus
Translated title		Interneurons of the cercal system of the cave cricket Troglophilus neglectus
Type		monografija
Place		Ljubljana
Publisher		Medicinska fakulteta
Publication year		1998
Volume		str. 57
Language		slo
Abstract		The aim of the study was to establish whether the processing of directorinal information in the interneurons of the cercal sensory system of the cave cricket Troglophilus neglectus Krauss (Rhaphidophoridae, Orthoptera) differs from other orthopteroids due to perpendicular orientation of the cerci. This might enable them to detect wind direction also in perpendicular plane. Results were obtained by bahavioural experiment, intracelluar recorsing with injection of dye and black-fill staining. Bahavioural experiment showes, that cave crickets respond to wind and detect its direction Four dorsal giant interneurons (GI) (9-2a, 9-3a, 10-2a, 10-3a), two ventral GIs (8-1a, 9-1a) and two local interneurons are described. The morphology and directional sensitivity of the dorsal GIs resemble those of crickets' GIs, whereas ventral GIs of cave-crickets differ from crickets' ventrals. In spite of different position of the cerci crickets detect wind direction in the horizontal plane in the same way as crickets do. We conclude that the distribution of filiform hairs and the distribution of afferent projections in terminal ganglion of cave cricket resemble that of crickets, whereas the deflection direction of L hairs must have been changed. The position of the cerci perpendicular to the ground does not serve for detection of wind direction in the perpendicular plane.
Descriptors		BEHAVIOR, ANIMAL ANIMAL COMMUNICATION INTERNEURONS MECHANORECEPTORS ORTHOPTERA RECEPTORS, SENSORY