EFFECTS OF SOME SEMIOCHEMICALS ON THE SEX PHEROMONE OF THE BERTHA ARMYWORM, MAMESTRA CONFIGURATA (LEPIDOPTERA: NOCTUIDAE)

1984 ◽  
Vol 116 (4) ◽  
pp. 619-623 ◽  
Author(s):  
W. F. Steck ◽  
B. K. Bailey ◽  
E. W. Underhill
Keyword(s):  
Sex Pheromone ◽  
Mamestra Configurata ◽  
Tetradecenyl Acetate ◽  
Lepidoptera Noctuidae ◽  
Bertha Armyworm

AbstractInclusion of traces of (Z)-11-hexadecenol in synthetic sex lure traps for bertha armyworm moths resulted in diminished trapping; substantial amounts of (Z)-9-hexadecenol or (Z)-11-hexadecenal were also suppressant. Of 22 other oxyolefins tested, (Z)-7-dodecenyl acetate acted in conjunction with the bertha lure components to attract Euagrotis tepperi (Walker) to traps, and (Z)-7-tetradecenyl acetate similarly to attract Lacinipolia vicina (Grote). No tested additive improved either the potency or the specificity of the original bertha blend.

MINOR SEX-PHEROMONE COMPONENTS OF MAMESTRA CONFIGURATA (LEPIDOPTERA: NOCTUIDAE) AND IMPROVED BLENDS FOR ATTRACTION OF MALE MOTHS

1984 ◽  
Vol 116 (1) ◽  
pp. 103-105 ◽  
Author(s):  
D. L. Struble ◽  
G. L. Ayre ◽  
J. R. Byers
Keyword(s):  
Sex Pheromone ◽  
Field Conditions ◽  
Mamestra Configurata ◽  
Sex Pheromone Components ◽  
Southern Alberta ◽  
Pheromone Components ◽  
Tetradecenyl Acetate ◽  
Lepidoptera Noctuidae ◽  
Number Of Males ◽  
Bertha Armyworm

The sex pheromone of bertha armyworm, Mamestra configurata (Walker), was reported to be (Z)-11-hexadecenyl acetate (Z11-16:Ac) and an unidentified tetradecenyl acetate. Electroantennogram responses of male antennae to synthetic isomeric tetradecenyl acetates and attractancy tests under field conditions showed that the highest number of males were captured with a blend of Z9-14:Ac: Z11-16:Ac in a ratio of 1:19 (Underhill et al. 1977). This blend has been useful for monitoring the relative abundances of bertha armyworm; however, in 162 monitor traps in southern Alberta from 1979 to 1982, the catches consisted of 18.4% Agroperina cogitata (Sm)

BERTHA ARMYWORM (LEPIDOPTERA: NOCTUIDAE): DETECTION OF A SEX PHEROMONE AND THE STIMULATORY EFFECT OF SOME SYNTHETIC CHEMICALS

1975 ◽  
Vol 107 (4) ◽  
pp. 355-359 ◽  
Author(s):  
D. L. Struble ◽  
M. Jacobson ◽  
N. Green ◽  
J. D. Warthen
Keyword(s):  
Sex Pheromone ◽  
Maximum Response ◽  
Laboratory Bioassay ◽  
Mamestra Configurata ◽  
Synthetic Chemicals ◽  
Sexual Responses ◽  
Lepidoptera Noctuidae ◽  
Bertha Armyworm

AbstractA sex pheromone, detected in female moths of the bertha armyworm, Mamestra configurata Wlk., was extracted from females that were more than 3 days old. Males responded to the pheromone from 2 days of age until they died; younger males were not tested. Chemical and bioassay analyses indicated that the pheromone was an acetate.The stimulatory effect of several chemicals was determined with males in a laboratory bioassay. Sexual responses were induced by Z7-, Z9-, Z10-, Z11-, and Z13-hexadecen-1-ol acetates. The maximum response in the laboratory was from the Z10-isomer, but this compound was only weakly attractive to males in the field.

SEX PHEROMONE TRAPS IN POPULATION MONITORING OF ADULTS OF THE BERTHA ARMYWORM, MAMESTRA CONFIGURATA (LEPIDOPTERA: NOCTUIDAE)

1979 ◽  
Vol 111 (1) ◽  
pp. 91-95 ◽  
Author(s):  
Warren Steck ◽  
E. W. Underhill ◽  
M. D. Chisholm ◽  
C. C. Peters ◽  
H. G. Philip ◽  
...  
Keyword(s):  
Sex Pheromone ◽  
Population Monitoring ◽  
Pheromone Traps ◽  
Light Traps ◽  
Mamestra Configurata ◽  
Sex Pheromone Traps ◽  
Lepidoptera Noctuidae ◽  
Army Worm ◽  
Bertha Armyworm ◽  
Prairie Provinces

AbstractTraps baited with the sex pheromone of the bertha army worm moth, Mamestra configurata (Walker), were operated at 36 sites across the prairie provinces in 1976 and 1977. They captured ca. 15 times as many bertha moths as did light traps and were considered to constitute a useful method for detection of adults of this species.

DENSITY, PARASITISM, AND DISEASE INCIDENCE OF LARVAE OF THE BERTHA ARMYWORM, MAMESTRA CONFIGURATA WALKER (LEPIDOPTERA: NOCTUIDAE), IN MANITOBA, 1973–1986’

1988 ◽  
Vol 120 (5) ◽  
pp. 401-413 ◽  
Author(s):  
W. J. Turnock
Keyword(s):  
Disease Incidence ◽  
Population Declines ◽  
Mamestra Configurata ◽  
Trends Over Time ◽  
Nuclear Polyhedrosis ◽  
Physiographic Regions ◽  
River Plain ◽  
Swan River ◽  
Lepidoptera Noctuidae ◽  
Bertha Armyworm

AbstractPopulations of larvae of the bertha armyworm, Mamestra configurata Wlk., in four physiographic regions of Manitoba showed similar trends over time: a decline from the outbreak of 1971–1972 to very low densities in 1975–1977, an increase to a peak during the years 1979–1981, and a subsequent decline. During the period of peak larval populations, brief (1 or 2 years) outbreaks [at least some fields with > 20 larvae per square metre) occurred at five locations in two regions, the Swan River Plain and the Valley River Plain, but not in the Western Uplands or the Manitoba Lowlands. In the first two regions, larval densities rose rapidly (from < 1.6 to > 13.8/m2) in 1 year. Although the general trend of population density was similar, there were differences in density among and within regions, and in the timing, severity, and duration of peak populations. Two parasitoids (Banchus flavescens Cress., Athrycia cinerea (Coq.)) and two pathogens (a nuclear polyhedrosis virus (NPV) and fungi of the Entomophthorales) occurred regularly in larval populations. Of these, B. flavescens had the highest constancy among collections and may help to keep bertha armyworm populations at low densities. NPV was rarely found among larvae from low-density populations but appeared in all populations that reached outbreak levels. No single biotic agent could be associated with the population declines because of multiple parasitism and the difficulty in partitioning mortality when only a single sample could be taken. The rapid increase of bertha armyworm larvae from very low to outbreak levels in 1 year will prevent predictions of outbreaks from being based on larval densities in the preceding year.

EFFECT OF LATITUDE ON THE CRITICAL PHOTOPERIOD FOR DIAPAUSE INDUCTION IN THE BERTHA ARMYWORM, MAMESTRA CONFIGURATA (LEPIDOPTERA: NOCTUIDAE)

1983 ◽  
Vol 115 (8) ◽  
pp. 1039-1042 ◽  
Author(s):  
B. M. Hegdekar
Keyword(s):  
Temperature Regime ◽  
Diapause Induction ◽  
The Other ◽  
Fluctuating Temperature ◽  
Mamestra Configurata ◽  
Ambient Temperatures ◽  
Critical Photoperiod ◽  
Lepidoptera Noctuidae ◽  
H 20 ◽  
Bertha Armyworm

AbstractThe critical photoperiod for diapause induction in pupae of Mamestra configurata Walker in Manitoba was 16 h 06 min at Glenlea (49°38′ N), 16 h 20 min at Grandview (51°10′ N), and 16 h 42 min at Birch River (52°24′ N). The differences in cirtical photoperiods observed at Glenlea and Grandview were not significant. At least two different photoperiods exist, one in the Glenlea and Grandview areas and the other in the Birch River area. In the laboratory, the critical photoperiod was 13.5 h when larvae were exposed to a daily fluctuating temperature regime of 12 h at 25 °C and 12 h at 10 °C. Longer critical photoperiods found for the field populations may be related to the relatively low ambient temperatures to which the larvae were exposed in field cages.

EFFECTS OF AGE, EGG DEVELOPMENT, AND MATING ON CALLING BEHAVIOR OF THE BERTHA ARMYWORM, MAMESTRA CONFIGURATA WALKER (LEPIDOPTERA: NOCTUIDAE),

1986 ◽  
Vol 118 (12) ◽  
pp. 1221-1230 ◽  
Author(s):  
M.A. Howlader ◽  
G.H. Gerber
Keyword(s):  
Refractory Period ◽  
Egg Laying ◽  
Calling Behavior ◽  
Diel Periodicity ◽  
Egg Development ◽  
Mamestra Configurata ◽  
First Time ◽  
Lepidoptera Noctuidae ◽  
Bertha Armyworm

AbstractThe effects of age, egg development, and mating on calling behavior of the bertha armyworm, Mamestra configurata Walker, were studied at 20°C, 60% RH, and a 16-h L: 8-h D photoperiod. Most virgin females called and copulated for the first time during the second or third scotophase after emergence. The first copulation was 17.0 ± 0.2 h (mean±SE) long and was terminated within 1 h after lights off in the scotophase following the initiation of copulation. The ovaries contained the first chorionated eggs before the beginning of the second scotophase after emergence. The first egg laying occurred during the same scotophase in which the first copulation was terminated, i.e. scotophase three or four. Almost 75% of the eggs were laid by the end of the seventh scotophase after emergence. Mated females resumed calling after a refractory period of about 2 days. Once calling was resumed after copulation, most females laid eggs and called nightly, with egg laying occurring during the first 5–6 h and calling during the last 2–3 h of the scotophase. Mated females called for a shorter period during each scotophase than virgin females of the same age (1–3 h vs. 4–6 h). In virgin females, the diel periodicity of calling was advanced and the length of the daily calling period was increased with age until the seventh scotophase after emergence; thereafter, both remained relatively unchanged.

A SEX PHEROMONE MIXTURE FOR THE BERTHA ARMYWORM MOTH, MAMESTRA CONFIGURATA: (Z)-9-TETRADECEN-1-OL ACETATE AND (Z)-11-HEXADECEN-1-OL ACETATE

1977 ◽  
Vol 109 (10) ◽  
pp. 1335-1340 ◽  
Author(s):  
E.W. Underhill ◽  
W.F. Steck ◽  
M.D. Chisholm
Keyword(s):  
Mass Spectrometry ◽  
Sex Pheromone ◽  
Active Component ◽  
Field Tests ◽  
The Other ◽  
Mass Spectrometry Data ◽  
Gas Chromatography Mass Spectrometry ◽  
Mamestra Configurata ◽  
Pheromone Components ◽  
Bertha Armyworm

AbstractAn abdominal tip extract of female bertha armyworm moths, Mamestra configurata (Walker), was found to contain two sex pheromone components. One corresponded to (Z)-11-hexadecen-1-ol acetate, previously identified from this source, and the other to a tetradecen-1-ol acetate, identified by gas chromatography – mass spectrometry. Data obtained from the EAG profile of isomeric tetradecen-1-ol acetates indicated the active component to be (Z)-9-tetradecen-1-ol acetate. Neither of these two acetates was by itself attractive to males in field tests; however, mixtures were attractive, with the best attraction occurring with a C16:C14 acetate ratio of about 19:1.

RESIDUES OF METHOMYL IN RAPE PLANT AND SEED FOLLOWING ITS APPLICATION FOR THE CONTROL OF BERTHA ARMYWORM, MAMESTRA CONFIGURATA (LEPIDOPTERA: NOCTUIDAE)

1972 ◽  
Vol 104 (11) ◽  
pp. 1745-1750 ◽  
Author(s):  
Y. W. Lee ◽  
R. J. Ford ◽  
H. McDonald ◽  
K. S. McKinlay ◽  
L. G. Putnam ◽  
...  
Keyword(s):  
Rape Seed ◽  
Mamestra Configurata ◽  
Rape Plant ◽  
Plant Samples ◽  
Three Samples ◽  
Lepidoptera Noctuidae ◽  
Bertha Armyworm

AbstractResidues of methomyl in rape plants and seed were determined after its application for bertha armyworm control. In one experiment application of 3 oz of methomyl per acre left 17 p.p.m. residue on the rape plants immediately after application. This level rapidly declined to 1.5, 1.0, 0.4, and 0.2 p.p.m. 1, 2, 5, and 9 days later, respectively, and no residue was detected (less than 0.02 p.p.m.) in seed harvested 22 days after application of the toxicant. Rape plant samples collected from several farms immediately after the application of 3 to 4 oz of methomyl per acre had 2.5 to 16 p.p.m. residues, indicating inefficient application of the insecticide in some cases. Analysis of rape seed samples collected from 36 farms showed little residue in three samples (0.02 to 0.03 p.p.m.) and none in 33, indicating that the use of methomyl for bertha armyworm control is not likely to contaminate rape seed with undesirable levels of residues.

Mamestra configurata Walker, bertha armyworm (Lepidoptera: Noctuidae).

2009 ◽  
pp. 169-176
Author(s):  
P. G. Mason ◽  
W. J. Turnock ◽  
M. A. Erlandson ◽  
U. Kuhlmann ◽  
L. Braun
Keyword(s):  
Mamestra Configurata ◽  
Lepidoptera Noctuidae ◽  
Bertha Armyworm
Sign in / Sign up

Export Citation Format

Share Document