INSECTICIDE RESISTANCE INHELIOTHIS ARMIGERA(HÜBNER) (LEPIDOPTERA: NOCTUIDAE) IN THE NAMOI VALLEY OF NEW SOUTH WALES, AUSTRALIA

1975 ◽  
Vol 14 (2) ◽  
pp. 171-173 ◽  
Author(s):  
G. J. Goodyer ◽  
A. G. L. Wilson ◽  
F. I. Attia ◽  
A. D. Clift
Keyword(s):  
Insecticide Resistance ◽  
New South ◽  
New South Wales ◽  
South Wales ◽  
Lepidoptera Noctuidae

The incidence of Heliothis armigera (Hübner) and H. punctigera Wallengren (Lepidoptera: Noctuidae) on cotton and other host-plants in the Namoi Valley of New South Wales

1980 ◽  
Vol 70 (1) ◽  
pp. 113-131 ◽  
Author(s):  
K. G. Wardhaugh ◽  
P. M Room ◽  
L. R Greenup
Keyword(s):  
Host Plants ◽  
New South ◽  
New South Wales ◽  
Light Trap ◽  
Heliothis Armigera ◽  
South Wales ◽  
Large Numbers ◽  
Resident Populations ◽  
Successive Generations ◽  
Lepidoptera Noctuidae

AbstractFour years of light-trap and crop survey data from the Namoi Valley of New South Wales are presented for Heliothis armigera (Hb.) and H. punctigera Wllgr. These suggest there are four generations a year. The associated seasonal sequence of major host-plants supporting successive generations, appeared to be: H. armigera—wheat; pre-flowering cotton; flowering cotton and sorghum; sorghum, flowering cotton and sunflowers; and H. punctigera—lucerne, linseed and medics; pre-flowering cotton; flowering cotton, sunflowers and soyabeans; lucerne, linseed and medics; pre-flowering cotton. On host-plants common to both species, a change in dominance from H. punctigera to H. armigera occured as each summer progressed. Suggested causes are: seasonal changes in the availability of host-plants, favouring H. armigera over H. punctigera; insecticide resistance in H. armigera; and the competitive superiority of H. armigera. Large numbers of H. armigera in cotton appeared to be related to: warm springs, which favoured moth emergence during the period of wheat anthesis; the incomplete control of infestations within cotton itself, leading to the development of resident populations; and the influx of moths from other host-plants, especially sorghum, during the latter half of the season.

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