Hostname: page-component-586b7cd67f-l7hp2 Total loading time: 0 Render date: 2024-11-24T11:25:56.987Z Has data issue: false hasContentIssue false
  • English
  • Français

IDENTIFICATION OF SEX-PHEROMONE COMPONENTS OF THE SIBLING SPECIES EUXOA RIDINGSIANA (GRT.) AND EUXOA MAIMES (SM.) (LEPIDOPTERA: NOCTUIDAE), AND BLENDS FOR THEIR SPECIFIC ATTRACTION

Published online by Cambridge University Press:  31 May 2012

D.L. Struble  and
J.R. Byers
D.L. Struble
Affiliation:
Agriculture Canada Research Station, Lethbridge, Alberta, CanadaT1J 4B1
J.R. Byers
Affiliation:
Agriculture Canada Research Station, Lethbridge, Alberta, CanadaT1J 4B1
Get access Rights & Permissions [Opens in a new window]

Abstract

The sex-pheromone components of the sibling species Euxoa ridingsiana and Euxoa maimes were identified in abdomen-tip washes and extracts of calling female moths. Both species produced the same primary pheromone component, (Z)-9-tetradecenyl acetate (i.e. Z9-14:Ac), but they produced different amounts of secondary pheromone components. In the field, male moths of E. ridingsiana were specifically attracted to a 3-component blend of Z7-12:Ac, and Z7-14:Ac, and Z9-14:Ac in a ratio of 1:2:40 at 500 μg per dispenser, and males of E. maimes were specifically attracted to a 5-component blend of Z7-14:Ac, Z9-14:Ac, Zl 1-14:Ac, Zll-16:Ac, andZll-16:OH in a ratio of 1.5:500:5:50:2.5 at 500 μg per dispenser. Both synthetic pheromone blends were competitive with conspecific females. These pheromone analyses confirm that E. ridingsiana and E. maimes are valid biological species that can maintain their reproductive isolation solely by specific sex pheromones.

Résumé

On a identifié les composantes des phéromones sexuelles des espèces jumelles Euxoa ridingsiana et Euxoa maimes à partir de lavages de bouts d'abdomen et d'extraits de femelles en appel. Ces 2 espèces produisent la même composante phéromonale primaire, le (Z)-9-tetradecenyl acetate (c.à.d. Z9—14:Ac), mais différentes quantités de composantes phéromonales secondaires. Sur le terrain, les mâles de E. ridingsiana ont été attirés de façon particulière par un mélange des 3 composantes Z7-12:Ac, Z7-14:Ac, et Z9-14:Ac dans des proportions 1:2:40 à raison de 500 μg par dispensateur. Un mélange de 5 composantes de Z7-14:Ac, Z9-14:Ac, Z11-14:Ac, Z11-16:Ac, et Zll-16:OH dans les proportions 1.5:500:5:50:2.5 à 500 μg par dispensateur a attiré spécifiquement les mâles de E. maimes. L'attractivité des 2 mélanges se mesurait à celle de femelles conspécifiques. Ces analyses des phéromones confirment que E. ridingsiana et E. maimes sont des espèces biologiques valides pouvant maintenir leur isolement reproducteur sur la seule base de leurs phéromones sexuelles propres.

Type
Articles
Information
The Canadian Entomologist , Volume 117 , Issue 4 , April 1985 , pp. 495 - 504
Copyright
Copyright © Entomological Society of Canada 1985

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Byers, J.R., Struble, D.L., and Lafontaine, J.D.. 1985. Biosystematics of the genus Euxoa. XVIII. Comparative biology and experimental taxonomy of the sibling Euxoa ridingsiana (Grt.) and Euxoa maimes. Can. Ent. 117: 481–493.CrossRefGoogle Scholar
Heath, R.R., Burnsed, G.E., Tumlinson, J.H., and Doolittle, R.E.. 1980. Separation of a series of positional and geometrical isomers of olefinic aliphatic primary alcohols and acetates by capillary gas chromatography. J. Chromatogr. 189: 199–208.CrossRefGoogle Scholar
Steck, W.F., Chisholm, M.D., Bailey, B.K., and Underhill, E.W.. 1979. Moth sex attractants found by systematic field testing of 3-component acetate-aldehyde candidate lures. Can. Ent. 111: 1263–1269.CrossRefGoogle Scholar
Steel, R.G.D., and Torrie, J.H.. 1960. Principles and Procedures of Statistics. McGraw-Hill, NY.Google Scholar
Struble, D.L. 1981. A four-component pheromone blend for optimum attraction of redbacked cutworm males, Euxoa ochrogaster (Guenée). J. chem. Ecol. 7: 615–625.CrossRefGoogle ScholarPubMed
Struble, D.L. 1983. Sex pheromone components of Euxoa drewseni: chemical identification, electrophysiological evaluation, and field attractancy tests. J. chem. Ecol. 9: 335–346.CrossRefGoogle Scholar
Struble, D.L., and Arn, H.. 1984. Combined gas chromatography and electroantennogram recording of insect olfactory responses. In Hummel, H.E. (Ed.), Experimental Entomology. T.A. Miller, Series Ed., Springer, NY.Google Scholar
Struble, D.L., and Richards, K.W.. 1983. Identification of sex pheromone components of the female driedfruit moth, Vitula edmandsae serratilineella, and a blend for attraction of male moths. J. chem. Ecol. 9: 785–801.CrossRefGoogle Scholar