OCCURRENCE OF A TWO GENERATION STRAIN OF THE EUROPEAN CORN BORER, <i>OSTRINIA NUBILALIS</i> (LEPIDOPTERA: PYRALIDAE), IN QUEBEC

McLeod, David G.; Ritchot, C.; Nagai, Toshio

doi:10.4039/ent111233-3

Cited by 19 publications

(17 citation statements)

References 4 publications

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“…Z races predominate over most of the ECB range in Europe and North America, whereas the E race is found only at select locations in Switzerland, Italy, and eastern North America. (Klun and cooperators 1975, McLeod et al 1979, Buechi et al 1982, Anglade et al 1984.…”

Section: Discussionmentioning

confidence: 99%

Gene Flow Among Three Races of European Corn Borers (Lepidoptera: Pyralidae) in New York State

Glover

Knodel

Robbins

et al. 1991

Environmental Entomology

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In New York state, there are three races of European corn borer moths, which are characterized principally by differences in voltinism and the sex pheromone communication system. One race is bivoltine, with females producing and males responding to a 99:1 EIZ isomeric ratio of~1l-14:0Ac's as the sex pheromone. Two races, one univoltine and one bivoltine, produce and respond to a 3:97 E 12 blend of~1l-14 :OAc·s. The races are referred to as BE, UZ, and BZ to denote these differences. Analyses by gas chromatography of field-collected females indicate that there is significant hybridization between the Z and E races when in sympatry, with hybrid females producing a 68:32 ratio of E/Zl1-14:OAc. Gene flow among the races was investigated using differences in triose phosphate isomerase (TPI) allozyme frequencies of moths from sites sampled across the state. The fixed nature of the Tpi-l allele in the BE race and increases in the Tpi-l allele frequencies in UZ populations in sympatry with the BE race support the hypothesis that gene flow following hybridization is unidirectional from BE populations into the Z populations. In addition, the TPI genotypes of the 10 hybrid females analyzed were consistent with hybridization occurring by E males mating with Z females.

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Section: Discussionmentioning

confidence: 99%

Gene Flow Among Three Races of European Corn Borers (Lepidoptera: Pyralidae) in New York State

Glover

Knodel

Robbins

et al. 1991

Environmental Entomology

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“…3) and represents an important addition to the understanding of flight patterns occurring at the present time in this state. Shifts in voltinism are not uncommon, but frequently result from displacement of univoltine types by multiple generations (Wresselll953, McEwen et al 1968, McLeod et al 1979. In many regions of upstate New York either a shift from bivoltine to univoltine flights is occurring or the two types have coexisted for many decades.…”

Section: Survey Of Ecb Flights 1981mentioning

confidence: 99%

Variations in Flight Patterns of European Corn Borer (Lepidoptera: Pyralidae) in New York1

Eckenrode¹,

Robbins²,

Andaloro³

1983

Environmental Entomology

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Seasonal flights of Ostrinia nubila/is (Hiibner) were monitored in 1981, using blacklight traps in 28 locations in central and western New York state. Calendar date of peak catch and heat unit accumulations indicated the presence of both univoltine and bivoltine biotypes, although before this study, only the latter was assumed to be present in these regions. Both biotypes were evident at 16 of the 28 trapping sites. Trap catches during the last S years of a IS-year study (1967)(1968)(1969)(1970)(1971)(1972)(1973)(1974)(1975)(1976)(1977)(1978)(1979)(1980)(1981), at a fixed location near Geneva, N. Y., indicated the recurrence of a univoltine population that had last been noted in this region before 1964. Losses due to larval contamination of processed snap beans are reported for 1979 and 1980. Growers of susceptible crops must be aware of local flights and the potential for shifts in peak moth emergence before insecticides are applied.

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“…Sweet corn is a major vegetable crop in Canada grown on over 20,000 hectares of land across all provinces. In the province of Quebec, Canada, two ECB races overlap and are differentiated by the use of two distinct pheromones: the Z ‐univoltine race, and the E ‐bivoltine race (McLeod et al, ; Hudon & LeRoux, ; Smith et al, ). This insect goes through five larval instars and a pupal stage before emerging into the adult stage.…”

Section: Introductionmentioning

confidence: 99%

Impact of climate change on Ostrinia nubilalis (Lepidoptera: Crambidae) phenology and its implications on pest management

Gagnon

Bourgeois

Bourdages

et al. 2019

Agri and Forest Entomology

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1 Climate change can cause negative impacts to the agricultural sector by increasing pest damage to crops. The European corn borer (ECB) is a major insect pest of corn in North America. Its speed of development could potentially accelerate under a warmer climate, leading to an earlier development of the first generation and an increase in the number of generations per year. 2 The main objective of this study was to assess the potential impacts of climate change on ECB management for the future period 2041-2070 in Quebec, Canada, using bioclimatic modelling and climate analogues. 3 First flight of ECB moths could occur about 15 days earlier in the season in 2041-2070 compared to the reference period 1970-1999. 4 The window for insecticide interventions may be reduced under climate change by 15.6% to 27.8% for univoltine ECB and by 13.8% to 52.7% for bivoltine ECB. 5 Climate change could promote the development of an additional generation in the southern region for both races, considering temperature increases and factors inducing the overwintering diapause. 6 ECB management could become more costly both economically and environmentally under the future climate, and it should be revised according to the results of this study.

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OCCURRENCE OF A TWO GENERATION STRAIN OF THE EUROPEAN CORN BORER, OSTRINIA NUBILALIS (LEPIDOPTERA: PYRALIDAE), IN QUEBEC

Cited by 19 publications

References 4 publications

Gene Flow Among Three Races of European Corn Borers (Lepidoptera: Pyralidae) in New York State

Gene Flow Among Three Races of European Corn Borers (Lepidoptera: Pyralidae) in New York State

Variations in Flight Patterns of European Corn Borer (Lepidoptera: Pyralidae) in New York1

Impact of climate change on Ostrinia nubilalis (Lepidoptera: Crambidae) phenology and its implications on pest management

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