EurekaMag.com logo
+ Translate

Behaviour of flying oriental fruit moth males during approach to sex pheromone sources


, : Behaviour of flying oriental fruit moth males during approach to sex pheromone sources. Physiological Entomology 19(1): 61-69

The pheromone-modulated upwind flight tracks of Grapholita molesta (Busck) males were video recorded as they approached a point-source of pheromone in a wind tunnel. The field of view of the video recording was divided longitudinally into 33 cm sections and the flight behaviour of the males in these sections was measured and compared as they approached from 233 cm to 50 cm downwind of the pheromone source. As the males approached the source, their mean ground speeds decreased. The mean values of their track angles increased with respect to due upwind (0 degree ), indicating movement more across the wind. These changes resulted mainly from the males decreasing their air speeds as they progressed up the plume toward the source. They did not change the average direction of their steering (course angle). Thus, the increase in track angles resulted from the males allowing themselves to drift more in the wind as they approached the odour source. The males also increased their average rate of counterturning as they approached the source. The net result of all these behavioural changes was a track that slowed and grew narrower, giving the impression that the males were 'homing-in' on the pheromone source as they approached. Causes of these systematic changes in behaviour are considered with respect to the known systematic changes in pheromone plume structure as the distance to the source decreases.

(PDF same-day service: $19.90)

Accession: 002308938

DOI: 10.1111/j.1365-3032.1994.tb01075.x

Submit PDF Full Text: Here


Submit PDF Full Text

No spam - Every submission is manually reviewed

Due to poor quality, we do not accept files from Researchgate

Submitted PDF Full Texts will always be free for everyone
(We only charge for PDFs that we need to acquire)

Select a PDF file:
Close
Close

Related references

Evenden, M.L.; McClaughlin, J.R., 2005: Male oriental fruit moth response to a combined pheromone-based attracticide formulation targeting both oriental fruit moth and codling moth (Lepidoptera: Tortricidae). Combined attracticide formulations targeting Oriental fruit moth, Grapholita molesta (Busck), and codling moth, Cydia pomonella (L.), were tested in a field trapping experiment. Capture of male codling moths in traps baited with the combined formu...

Evenden, M.L.; McClaughlin, J.R., 2005: Male Oriental fruit moth response to a combined pheromone-based attracticide formulation targeting both Oriental fruit moth and codling moth (Lepidoptera: Tortricidae). Combined attracticide formulations targeting Oriental fruit moth, Grapholita molesta (Busck), and codling moth, Cydia pomonella (L.), were tested in a field trapping experiment. Capture of male codling moths in traps baited with the combined formu...

Hrdy, I.; Kuldova, J.; Sundukova, N.E.; Vrkoe, J., 1990: Microplot trials of pheromone dispensers for confusion of males of the oriental fruit moth, Cydia molesta, and the plum fruit moth, Cydia funebrana. In connection with the verification of small plot tests as a means of solving certain problems to do with pest control by male disorientation, 3 types of pheromone dispensers were tested for their efficacy in disorientating males of Cydia molesta...

Baker, TC.; Meyer, W.; Roelofs, WL., 1981: Sex pheromone dosage and blend specificity of response by Oriental fruit moth males. The sex pheromone-mediated responses of male oriental fruit moths, G. molesta (Busck), to an array of blends and dosages of Z8-12Ac and E8-12:Ac were analyzed. Males exhibited sustained upwind flight resulting in source location only to intermedia...

Kobayashi, RM.; Ohinata, K.; Chambers, DL.; Fujimoto, MS., 1978: Sex pheromones of the oriental fruit fly and the melon fly: mating behaviour, bioassay method, and attraction of females by live males and by suspected pheromone glands of males. Sexually mature virgin females of the oriental fruit fly, Dacus dorsalis Hendel, and the melon fly, D. cucurbitae Coquillett, were attracted by live males of their respective species in laboratory bioassays in 16-dm3 cages. The gland complex of th...

Gentry, CR.; Beroza, M., 1975: Capture of the Oriental fruit moth, the pecan bud moth, and the lesser appleworm in Georgia field trials with isomeric blends of 8-dudecenyl acetate and air-permeation trials with Oriental fruit moth pheromone. Environmental Ent, 45: 822-824

Gentry C.R.; Beroza M.; Blythe J.L.; Bierl B.A., 1975: Captures of the oriental fruit moth the pecan bud moth and the lesser appleworm in georgia usa field trials with isomeric blends of 8 dodecenyl acetate and air permeation trials with the oriental fruit moth pheromone. Environmental Entomology 4(5): 822-824

Gentry, C.R.; Beroza, M.; Blythe, J.L.; Bierl, B.A., 1975: Captures of the oriental fruit moth, the pecan bud moth, and the lesser appleworm in Georgia field trials with isomeric blends of 8-dodecenyl acetate and air-permeation trials with the oriental fruit moth pheromone. Maximum captures of males Cydia (Grapholitha) molesta (Busck) in sticky traps in Georgia were obtained in those baited with a blend of 95% (Z)-8-dodecenyl acetate and 5% (E)-8-dodecenylacetate plus dodecyl alcohol; however, captures of males of Gr...

Baker T.C.; Meyer W.; Roelofs W.L., 1981: Sex pheromone dosage and blend specificity of response by oriental fruit moth grapholitha molesta males. The sex pheromone-mediated responses of male oriental fruit moths, G. molesta (Busck), to an array of blends and dosages of Z8-12Ac and E8-12:Ac were analyzed. Males exhibited sustained upwind flight resulting in source location only to intermedia...

Kuenen, LPS.; Baker, TC., 1982: The effects of pheromone concentration on the flight behaviour of the oriental fruit moth, Grapholitha molesta. Males of Cydia molesta (Busck) (Grapholita molesta) in a wind tunnel flew at lower overall and net ground velocities when they flew toward sources of higher concentration of pheromone. Turning frequency was greater with increased pheromone concent...