Male courtship song in circadian rhythm mutants of Bactrocera cucurbitae (Tephritidae: Diptera).
Pulse train intervals (PTI) of courtship song were differentiated between circadian clock mutants of the melon fly, Bactrocera cucurbitae (Coquillett) (Tephritidae: Diptera). We analysed the male mating song of B. cucurbitae flies of two mutant strains that differed in circadian locomotor rhythm by a LabVIEW programming system. Flies with a short circadian rhythm (S-strain) had shorter PTI than those with a long circadian rhythm (L-strain) in the two age groups tested, young and old. Young flies showed longer PTI than old flies, but no interaction between strain and age was found in PTI. There was a significant interaction between strain and age for pulse train duration (PTD), whereas no stable difference was found in PTD between S- and L-strains. These results suggest a positive correlation between the length of the circadian locomotor rhythm and PTI of courtship song sounds in B. cucurbitae.
Miyatake
Takahisa
T
Laboratory of Animal Population Ecology, Faculty of Agriculture, Okayama University, Okayama 700-8530, Japan. miyatake@cc.okayama-u.ac.jp
Kanmiya
Kenkichi
K
D000161:Acoustic Stimulation; D000818:Animals; D002940:Circadian Rhythm / Q000235:genetics*; D003380:Courtship; D008297:Male; D009154:Mutation; D010507:Periodicity; D012726:Sexual Behavior, Animal / Q000502:physiology*; D033621:Tephritidae / Q000235:genetics*; D014828:Vocalization, Animal / Q000502:physiology*