@article {47881, title = {Effects of temperature on chirp rates of tree crickets (Orthoptera: Oecanthidae)}, journal = {African Zoology}, volume = {27}, year = {1992}, pages = {70-73}, chapter = {70}, abstract = {

The relationship between temperature and chirp rate is described for three African tree crickets, Oecanthus capensis, O. karschi and O. sycomorus. Knowledge of the variation in chirp rates of O. karschi and O. capensis makes it possible to discriminate between the songs of these species with a stopwatch. Their songs can also be used to estimate air temperature. When signals like cricket songs change with temperature, the response may also be affected. Some problems associated with temperature dependant communication systems are discussed.

}, author = {Toms, Robert B.} } @article {47768, title = {Incidental effects and evolution of sound-producing organs in tree crickets (Orthoptera : Oecanthidae)}, journal = {International Journal of Insect Morphology and Embryology}, volume = {22}, year = {1993}, month = {Jan-04-1993}, pages = {207 - 216}, abstract = {

Male tree cricket (Orthoptera : Oecanthidae) calling songs are used by females to locate conspecific mates. Changes in these songs are crucial to speciation. Since certain features of cricket sounds are correlated with the structures of the stridulatory organs, changes in stridulatory organs must be correlated with changes in songs. Surprisingly, there is no established hypothesis to explain the mechanism of morphological change associated with changes in songs. Some alternative possibilities are explored, with reference to incidental effects. Available evidence suggests that stridulatory organs are genetically stable and that changes in these organs occur in steps rather than gradually.

}, issn = {00207322}, doi = {10.1016/0020-7322(93)90010-X}, url = {http://linkinghub.elsevier.com/retrieve/pii/002073229390010X}, author = {Toms, Robert B.} }