Vibrational Communication Between the Sexes in Diaphorina citri (Hemiptera: Psyllidae)
نویسندگان
چکیده
We examined the substrate-borne vibrational signals used in communication between the sexes in Diaphorina citri Kuwayama (Hemiptera: Psyllidae), a vector of huanglongbing (an economically devastating disease of citrus), in an anechoic chamber and an olfactometer. Males and females both primarily produced simple, low-amplitude vibrational signals atmultiples of 170Ð250Hz, ranging in duration from 140 to 700 ms. The vibrational frequencies of males and females were negatively correlatedwithmass, but the correlationwas statistically signiÞcant only formales. Females replied tomalecallswithinan interval of 0.3Ð1.2 s. Such signals arewithin the rangesof signalsobserved for other psyllids. FemaleÐfemale interactions were occasionally observed. Intervals between male calls were not signiÞcantly different whether or not females replied. In an olfactometer, calling rate didnotdifferbetweenvirginmales exposed toodors fromvirgin femalesoncitrus versus thoseexposed only to clean air. However, the latent period for initialization of calling was signiÞcantly shorter for males exposed to clean air, suggesting that in the absence of olfactory cues psyllids might be more inclined to use acoustic signals to communicate with conspeciÞcs. Moreover, calling rate and latency to initialization of calling were positively and negatively correlated, respectively, with male age, suggesting that males are more likely to call the longer they remain unmated.
منابع مشابه
Low Incidence of Candidatus Liberibacter Asiaticus in Diaphorina Citri (hemiptera: Psyllidae) Populations between Nov 2005 and Jan 2006: Relevance to Management of Citrus Greening Disease in Florida
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