Electroantennographic responses differentiate sibling species of dingy cutworm complex,Feltia jaculifera (GN.) (Lepidoptera: Noctuidae)

1990 ◽  
Vol 16 (10) ◽  
pp. 2969-2980 ◽  
Author(s):  
J. R. Byers ◽  
D. L. Struble ◽  
C. E. Herle ◽  
G. C. Kozub ◽  
J. D. Lafontaine
Keyword(s):  
Sibling Species ◽  
Feltia Jaculifera ◽  
Lepidoptera Noctuidae ◽  
Dingy Cutworm

Electrophoretic comparisons of pheromotypes of the dingy cutworm, Feltia jaculifera (Gn.) (Lepidoptera: Noctuidae)

1992 ◽  
Vol 70 (1) ◽  
pp. 79-86 ◽  
Author(s):  
R. H. Gooding ◽  
B. M. Rolseth ◽  
J. R. Byers ◽  
C. E. Herle
Keyword(s):  
Genetic Differentiation ◽  
Sibling Species ◽  
Mate Recognition ◽  
Recognition System ◽  
Nominal Species ◽  
Sympatric Populations ◽  
Significant Gene ◽  
Mate Recognition System ◽  
Feltia Jaculifera ◽  
Lepidoptera Noctuidae

Males of four "sibling species" of Feltia jaculifera, characterized by their mate-recognition system (pheromotype), were examined for electrophoretic variation. Arginine phosphokinase was monomorphic but 14 other enzymes and 1 protein were polymorphic in one or more populations. No locus was diagnostic for any pheromotype. Mean heterozygosity per locus varied from 21 ± 7.8% to 26.7 ± 6.7%, the effective number of alleles per locus varied from 2.19 ± 0.43 to 3.44 ± 0.59, and from 4 to 11 loci were polymorphic in each population. Phenograms indicate that pheromotypes A, B, and D are genetically similar, whilst pheromotype C is distinctly different. Allele frequencies, FST values, and the large percentage (34–43%) of private alleles in sympatric populations of the pheromotypes indicate a genetic substructuring of the nominal species. However, the level of genetic differentiation among pheromotypes A, B, and D is well below that characteristic of sibling species. Nm values suggest that there is sufficient interbreeding between sympatric populations of pheromotypes A and B to preclude genetic differentiation due to drift. The evidence indicates that discrete mate-recognition systems can be achieved without much allozymic differentiation and can be maintained in spite of significant gene flow.

Mitochondrial DNA sequence variation among pheromotypes of the dingy cutworm, Feltia jaculifera (Gn.) (Lepidoptera: Noctuidae)

1996 ◽  
Vol 74 (12) ◽  
pp. 2109-2117 ◽  
Author(s):  
Felix Sperling ◽  
Robert Byers ◽  
Donal Hickey
Keyword(s):  
Mitochondrial Dna ◽  
Secondary Contact ◽  
Cytochrome Oxidase Subunit ◽  
Mtdna Sequence ◽  
Dna Sequence Variation ◽  
Site Variation ◽  
Feltia Jaculifera ◽  
Lepidoptera Noctuidae ◽  
Dingy Cutworm ◽  
Pheromone Polymorphism

The dingy cutworm, Feltia jaculifera, is a complex of at least four pheromonal races (pheromotypes). We examined mitochondrial DNA (mtDNA) sequence and restriction-site variation in the cytochrome oxidase subunit I and II genes. Among 74 specimens representing the four pheromotypes, we found three discrete mitochondrial lineages. The most divergent mtDNA within F. jaculifera, the γ lineage, was associated with pheromotype C. This result confirms an earlier allozyme survey, which also found that pheromotype C was the most genetically distinct race. Thus, pheromotype C probably represents a classic sibling species. Of the two most similar mitochondrial lineages, the α lineage was disproportionately associated with pheromotype A and the β lineage was disproportionately associated with pheromotypes B and D. Although the correspondence between mitochondrial lineages and pheromotypes was incomplete, mtDNA variation provides strong nonbehavioral evidence for genetic divergence between pheromotypes A and B + D. Allozymes revealed more minor differentiation among the A, B, and D races. For pheromotypes A and B, the presence of distinct mtDNA lineages within populations without perfect correspondence to pheromone polymorphism has several possible explanations. It may be due to retained ancestral mtDNA polymorphism, whether initial divergence of pheromone races occurred in allopatry or sympatry, or to divergence in isolation with introgression following secondary contact. The greater differences in allele frequencies of mtDNA than of allozymes may be due either to the susceptibility of mtDNA to bottleneck effects or to asymmetric selection against hybrid females.

Trap response of cutworm moths (Abagrotis orbis) to a sex-attractant lure in grape vineyards

2010 ◽  
Vol 142 (2) ◽  
pp. 135-142 ◽  
Author(s):  
Peter J. Landolt ◽  
D. Thomas Lowery ◽  
Lawrence C. Wright ◽  
Constance Smithhisler ◽  
Christelle Gúedot ◽  
...  
Keyword(s):  
British Columbia ◽  
Vitis Vinifera ◽  
Field Experiments ◽  
Sex Attractant ◽  
Early Spring ◽  
South Central ◽  
Tetradecenyl Acetate ◽  
Feltia Jaculifera ◽  
Multiple Field ◽  
Lepidoptera Noctuidae

AbstractLarvae of Abagrotis orbis (Grote) (Lepidoptera: Noctuidae) are climbing cutworms and can damage grapevines, Vitis vinifera L. (Vitaceae), in early spring by consuming expanding buds. A sex attractant would be useful for monitoring this insect in commercial vineyards. (Z)-7-Tetradecenyl acetate and (Z)-11-hexadecenyl acetate were found in extracts of female abdominal tips. In multiple field experiments, male A. orbis were captured in traps baited with a combination of these two chemicals but not in traps baited with either chemical alone. Males were trapped from mid-September to early October in south-central Washington and south-central British Columbia. Other noctuid moths (Mamestra configurata Walker, Xestia c-nigrum (L.), and Feltia jaculifera (Guenée)) were also captured in traps baited with the A. orbis pheromone and may complicate the use of this lure to monitor A. orbis. Abagrotis discoidalis (Grote) was captured in traps baited with (Z)-7-tetradecenyl acetate but not in traps baited with the two chemicals together.

Differences in Female Calling Behavior of Three Interfertile Sibling Species of Euxoa (Lepidoptera: Noctuidae)1

1978 ◽  
Vol 71 (4) ◽  
pp. 630-634 ◽  
Author(s):  
P. E. A. Teal ◽  
J. R. Byers ◽  
B. J. R. Philogéne
Keyword(s):  
Sibling Species ◽  
Calling Behavior ◽  
Lepidoptera Noctuidae

Sex Pheromone of the Cutworm Feltia jaculifera (Lepidoptera: Noctuidae) 1

1986 ◽  
Vol 15 (1) ◽  
pp. 40-43 ◽  
Author(s):  
W. F. Steck ◽  
E. W. Underhill ◽  
P. Palaniswamy
Keyword(s):  
Sex Pheromone ◽  
Feltia Jaculifera ◽  
Lepidoptera Noctuidae

BIOSYSTEMATICS OF THE GENUS EUXOA (LEPIDOPTERA: NOCTUIDAE): XIV. EFFECT OF TEMPERATURE ON FEMALE CALLING BEHAVIOR AND TEMPORAL PARTITIONING IN THREE SIBLING SPECIES OF THE DECLARATA GROUP

1980 ◽  
Vol 112 (2) ◽  
pp. 113-117 ◽  
Author(s):  
P. E. A. Teal ◽  
J. R. Byers
Keyword(s):  
Reproductive Isolation ◽  
Sibling Species ◽  
Calling Behavior ◽  
Effect Of Temperature ◽  
Sympatric Populations ◽  
Temporal Separation ◽  
Mating Activity ◽  
Temporal Partitioning ◽  
Species Specific ◽  
Lepidoptera Noctuidae

AbstractThe calling behavior of females of three interfertile sibling species of Euxoa was studied in the laboratory at 20°, 15°, 10°, and 5 °C. At 20 °C the calling posture of E. campestris and E. rockburnei differs from that of E. declarata. However, with decreasing temperatures the calling posture of both campestris and rockburnei becomes indistinguishable from that of declarata. The pattern and duration of calling bouts was similar in all three species and at all four temperatures. Calling occurred progressively earlier in scotophase as temperature decreased but temporal separation between the calling periods of the three species is maintained at all temperatures above the threshold for mating activity. This confirms that temporal separation of mating persists over the range of temperature normally encountered in nature and strengthens the evidence that species-specific rhythms of mating activity are largely responsible for maintaining reproductive isolation between sympatric populations of these species.

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

1985 ◽  
Vol 117 (4) ◽  
pp. 495-504 ◽  
Author(s):  
D.L. Struble ◽  
J.R. Byers
Keyword(s):  
Sex Pheromone ◽  
Sibling Species ◽  
Sex Pheromones ◽  
Biological Species ◽  
Pheromone Blends ◽  
Synthetic Pheromone ◽  
Sex Pheromone Components ◽  
Pheromone Components ◽  
Tetradecenyl Acetate ◽  
Lepidoptera Noctuidae

AbstractThe 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.

Evaluation of Sampling Methods for Dingy Cutworm Larvae (Lepidoptera: Noctuidae)1

1983 ◽  
Vol 76 (6) ◽  
pp. 1260-1261 ◽  
Author(s):  
Scotf R. Duffus ◽  
John D. Busacca ◽  
Robert B. Carlson
Keyword(s):  
Sampling Methods ◽  
Lepidoptera Noctuidae ◽  
Dingy Cutworm
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