INSECTICIDE RESISTANCE IN <i>HELIOTHIS ARMIGERA</i> (HÜBNER) (LEPIDOPTERA: NOCTUIDAE) IN THE NAMOI VALLEY OF NEW SOUTH WALES, AUSTRALIA

Goodyer, G. J.; Wilson, A. G. L.; Attia, F. I.; Clift, A. D.

doi:10.1111/j.1440-6055.1975.tb02020.x

Cited by 36 publications

(20 citation statements)

References 4 publications

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“…Dispersal may be induced under conditions which delay reproductive maturity (Hackett & Gatehouse, 1982). Certainly, the rapid spread of resistance to DDT (Twine & Kay, 1973;Wilson, 1974;Goodyer et al, 1975) in the early 1970s in eastern Australia would argue that gene flow is sufficient to lead to a rapid spread of resistance throughout this area. Within this context, the lack of geographic variation in gene frequencies is consistent with, but does not confirm, the hypothesis that gene flow occurs between most, if not all, populations of H. armigera in Australia.…”

Section: Gene Flow and Dispersalmentioning

confidence: 98%

“…Both are polyphagous, and a list of their common names illustrates the variety of hosts: cotton bollworm, tobacco budworm, tomato grubworm, corn earworm, bean-pod borer, flower caterpillar, native budworm and lucerne budworm (Broadley, 1977). Despite their sympatric distributions in Queensland and New South Wales (Common, 1953), and overlapping host preferences, the two species exhibit important differences: H. armigera has developed resistance to insecticides such as DDT (Twine & Kay, 1973;Wilson, 1974;Goodyer et al, 1975), and more recently, synthetic pyrethroids (Anon., 1983), while H. punctigera remains susceptible; H. punctigera is usually a pest in crops in spring, while in irrigated crops in southern Queensland and northern New South Wales, H. armigera often reaches pest status only during summer. Furthermore, H. armigera has become a serious pest in north-western Australia and in inland areas of eastern Australia only since the advent of resistance to DDT (Wilson, 1974;Wilson et al, 1979).…”

Section: Introductionmentioning

confidence: 98%

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Genetic variation inHeliothisin Australia: species identification and gene flow in the two pest species H. armigera (Hübner) and H.punctigeraWallengren (Lepidoptera: Noctuidae)

Daly

Gregg

1985

Bull. Entomol. Res.

104

106

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Genetic (electrophoretic) variation was examined in the two pest species of Heliothis found in Australia,//, armigera (Hiibner) and//, punctigera Wallengren. They could be differentiated by seven loci which enabled identification of individual eggs and small larvae not normally distinguishable by their morphology. The traditional criteria for distinguishing the larger larvae of the two species were shown to be unreliable. The genetic distance between the two species was 0-34 ± 0-02. The percentage of loci polymorphic in both species, 32%, and the mean heterozygosities, 11-3% for//, armigera and 10-8% for H. punctigera, are lower than those reported in the American species, H. virescens (F.) and H. zea (Boddie). Populations throughout Australia were differentiated from each other, but there did not appear to be a marked geographic pattern to the variation. Genetic distances between populations of H. armigera were low (<0-01). It was concluded that the effective population size of Heliothis is large and that significant gene flow probably occurs between widely separated regions.

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Section: Gene Flow and Dispersalmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 98%

Genetic variation inHeliothisin Australia: species identification and gene flow in the two pest species H. armigera (Hübner) and H.punctigeraWallengren (Lepidoptera: Noctuidae)

Daly

Gregg

1985

Bull. Entomol. Res.

104

106

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“…This is the period when insecticides are used most frequently. Since H. punctigera is susceptible to insecticides (Goodyer et al, 1975), few larvae survive in cotton ( Fig. 4-6).…”

Section: H Punctigeramentioning

confidence: 99%

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

Wardhaugh

Room²,

Greenup

1980

Bull. Entomol. Res.

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Four 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 and flowering cotton. On host-plants common to both species, a change in dominance from H. punctigera to H. armigera occurred 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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“…Resistance to cyclodiene insecticides (endrin, endosulphan and toxaphene) in H. armigera was common and widespread in the early 1970s (Goodyer et al, 1975). Resistance frequencies declined to almost undetectable levels in field populations during 1979-83 when endosulphan was replaced by pyrethroids, and other cyclodienes were deregistered (Forrester et al, 1993;Gunning & Easton, 1994).…”

Section: Introductionmentioning

confidence: 99%

Sex-linked inheritance of endosulphan resistance in Helicoverpa armigera

Daly

Fisk

1998

Heredity

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Endosulphan resistance is common in Australian populations of Helicoverpa armigera (Hübner), but resistance frequencies have not increased above 10-40% of the population, despite widespread use of this insecticide. We examined the inheritance of endosulphan resistance as part of a study of its evolution. Two field-resistant strains were selected in the laboratory. Results from a series of F 1 s and backcrosses in both larvae and adults indicated that resistance was sex-linked, with almost complete dosage compensation in the hemizygous females. In males, resistance was partially dominant in fourth instar larvae but semi-recessive in adults. Estimates of resistance factors depended on the life stage and instar tested and on the bioassay method used. In larvae, resistance factors were highest in neonates (14-fold) and then declined to twofold in fifth instar larvae. Our results indicate that the genetic basis of resistance should enhance the rate of evolution in field populations compared with an autosomal locus.

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

Cited by 36 publications

References 4 publications

Genetic variation inHeliothisin Australia: species identification and gene flow in the two pest species H. armigera (Hübner) and H.punctigeraWallengren (Lepidoptera: Noctuidae)

Genetic variation inHeliothisin Australia: species identification and gene flow in the two pest species H. armigera (Hübner) and H.punctigeraWallengren (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

Sex-linked inheritance of endosulphan resistance in Helicoverpa armigera

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