Flight of the bluegreen aphid<i>Acyrthosiphon kondoi</i>Shinji (Homoptera: Aphididae) I. Flight periodicity and phenological relationships

Rohitha, B. H.; Penman, D. R.

doi:10.1080/03014223.1986.10422662

Cited by 4 publications

(4 citation statements)

References 8 publications

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“…The field trial was conducted when aphid numbers had reached high levels. The sudden reduction of numbers between 7 (December 22) and 14 DAT in both plots were similar to those found by Rohitha and Penman (1986) and was attributed to aphid flights out of the trial area. Aphid flights are triggered by their density and the resultant reduction in host food quality (Beck 1968).…”

Section: Discussionsupporting

confidence: 83%

Lambda-cyhalothrin: an insecticide for hemipteran pest control in white clover seed crops

Schroeder¹,

Baird²,

Upritchard³

et al. 1996

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Lambda-cyhalothrin was tested in field cages at two rates (5 and 10 g/ha) and in white clover (Trifolium repens) field plots at 10 g/ha. Both rates significantly reduced nymph and adult potato mirid (Calocoris norvegicus) and aphid (Acyrthosiphon spp.) numbers up to 12 and 20 days after treatment (DAT), respectively in the cages. Numbers of aphids and potato mirid nymphs were significantly lower in the 10 g/ha treated cages up to 12 DAT. Aphid numbers were significantly reduced in the lambdacyhalothrin treated field plots up to 7 DAT, but there was no difference in potato mirid adult numbers between the treated and control plots. Of the common aphid predators collected, ladybird (Coccinella undecimpunctata) numbers were adversely affected by lambda-cyhalothrin application up to 14 DAT, while Tasmanian lacewing (Micromus tasmaniae) and harvestmen (Phalangium opilio) numbers were not reduced.

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Section: Discussionsupporting

confidence: 83%

Lambda-cyhalothrin: an insecticide for hemipteran pest control in white clover seed crops

Schroeder¹,

Baird²,

Upritchard³

et al. 1996

pnzppc

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show abstract

“…During the 18-24 h period (c. 0.1 generation time; Rohitha & Penman 1983), the change in aphid availability was considered to be negligible, and the change in catch solely controlled by weather factors. Regression coefficients and their degree of significance are given in Tables 1 and 2.…”

Section: Resultsmentioning

confidence: 99%

Flight of the bluegreen aphid,Acryrthosiphon kondoiShinji (Homoptera: Aphididae). II. The effect of weather: Multiple regression and flight threshold analyses

Rohitha

Penman

1986

New Zealand Journal of Zoology

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Multiple regression analysis failed to reveal clear relationships between weather conditions and flight of the bluegreen aphid (BGA), Acyrthosiphon kondoi Shinji (Homoptera: Aphididae). A threshold analysis was carried out on percent occurrence of flight and weather conditions during the spring flight peak of bluegreen aphid. Net radiation, temperature, and relative humidity for 50% flight occurrence (flight threshold) was 0.05 MJ/m2, 8.75"C and 60% respectively. Rainfall above 2 mm/h halted aphid flight. Threshold analysis of flight and time showed that interaction of several environmental factors served to modify the flight behaviour.

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“…The bluegreen aphid (BGA), Acyrthosiphon kondoi Shinji, shows clear peaks in flight activity during spring and autumn (e.g., Kain et al 1978Kain et al , 1979Gaynor et al 1979;Rohitha & Penman 1986 Studies by Rohitha & Penman (1986) have shown that the period between median flight day of spring and autumn flight,s, when measured in degree days (DO) accumulated above the lower temperature development threshold of BGA, was 1600-1676 DO.…”

Section: Introductionmentioning

confidence: 99%

Flight of the bluegreen aphid,Acyrthosiphon kondoiShinji (Homoptera: Aphididae). III. Comparison of trapping methods forA. kondoiand natural enemies

Rohitha

Penman

1986

New Zealand Journal of Zoology

Self Cite

View full text Add to dashboard Cite

Flight of the bluegreen aphidAcyrthosiphon kondoiShinji (Homoptera: Aphididae) I. Flight periodicity and phenological relationships

Cited by 4 publications

References 8 publications

Lambda-cyhalothrin: an insecticide for hemipteran pest control in white clover seed crops

Lambda-cyhalothrin: an insecticide for hemipteran pest control in white clover seed crops

Flight of the bluegreen aphid,Acryrthosiphon kondoiShinji (Homoptera: Aphididae). II. The effect of weather: Multiple regression and flight threshold analyses

Flight of the bluegreen aphid,Acyrthosiphon kondoiShinji (Homoptera: Aphididae). III. Comparison of trapping methods forA. kondoiand natural enemies

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