Jürgen Rheinlaender

Accuracy of phonotaxis by the green treefrog (Hyla cinerea)

Summary1.Phonotactic approaches (N=156) of 42 female green treefrogs (Hyla cinerea) were videotaped over a distance of 3.75 m in response to synthetic mating calls (0.9 kHz and 0.9, 2.7 and 3.0 kHz).2.To quantify the accuracy of phonotaxis, jump anglesγ and head orientation angles α were measured (Fig. 2) when the animals were 1 m or farther from the sound source.3.Phonotaxis was extremely accurate in response to the 3-component call, which is behaviorally equivalent to the males natural mating call. The mean jump angle was

Brain projections and information processing of biologically significant sounds by two large ventral-cord neurons ofGryllus bimaculatus DeGeer (Orthoptera, Gryllidae)

\bar \gamma = 16.1^\circ

Temporal parameters of male—female sound communication in Leptophyes punctatissima

(Fig. 5). Head scanning occurred prior to about 25% of the jumps. The accuracy of head orientation after scanning was even greater

Die afferente Hörbahn im Bereich des Zentralnervensystems vonDecticus verrucivorus (Tettigoniidae)

(\bar \alpha = 8.4^\circ )

Akustische Neuronen im Bauchmark der Wanderheuschrecke Locusta migratoria

as were the subsequent jumps