00999nas a2200121 4500008004100000245008500041210006900126300001000195490000700205520060300212100002100815856004100836 1992 eng d00aEffects of temperature on chirp rates of tree crickets (Orthoptera: Oecanthidae)0 aEffects of temperature on chirp rates of tree crickets Orthopter a70-730 v273 a

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.

1 aToms, Robert, B. uhttps://bio.acousti.ca/nn/node/4788101209nas a2200145 4500008004100000022001300041245010700054210006900161260001600230300001400246490000700260520071000267100002100977856006500998 1993 eng d a0020732200aIncidental effects and evolution of sound-producing organs in tree crickets (Orthoptera : Oecanthidae)0 aIncidental effects and evolution of soundproducing organs in tre cJan-04-1993 a207 - 2160 v223 a

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.

1 aToms, Robert, B. uhttp://linkinghub.elsevier.com/retrieve/pii/002073229390010X