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

Teal, Peter E. A.; Byers, J. R.; Philogène, Bernard J. R.

doi:10.1093/aesa/71.4.630

Cited by 20 publications

(28 citation statements)

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“…Here, in contrast to the results under natural photoperiod, there was cross attraction between declarata and campestris. The calling periods of females of these two lines are similar (Teal et al 1978). All declarata males recaptured were caught within 4 h after dark and none of the campestris males were caught until 5.5 h after dark.…”

Section: Resultsmentioning

confidence: 79%

BIOSYSTEMATICS OF THE GENUS EUXOA (LEPIDOPTERA: NOCTUIDAE) XV. SEX PHEROMONE CROSS ATTRACTANCY AMONG THE THREE CLOSELY RELATED SPECIES OF THE DECLARATA GROUP

Byers¹,

Underhill²,

Steck³

et al. 1981

Can Entomol

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Can. Ent. 113: 235-243 (1981) Male release-recapture experiments show that under natural photoperiod there is no cross attractancy between species of the sympatric pairs E. declarata and E. campestris or E. declarata and E . rockburnei, but that there is between the parapatric pair, E. campestris and E. rockburnei. When the calling periods of E. declarata and E. campestris females are synchronized by photoperiod manipulation there is cross attraction between these two species as well. However, in mating discrimination tests between E. declarata and E. campestris the normally strong bias against interspecific mating is only partially overcome by synchronizing mating activity rhythms. The residual tendency for conspecific mating is more likely due to imperfect synchronization of mating rhythms or differences in close range courtship behavior than to differences in attraction pheromone. Males of all three species are attracted to the same synthetic attractants. The results are consistent with the hypothesis that the attraction pheromones of the three species in the declarata group are very similar and are unlikely to play a major role in reproductive isolation, which is probably effected primarily by differences in circadian rhythms of mating activity.

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Section: Resultsmentioning

confidence: 79%

BIOSYSTEMATICS OF THE GENUS EUXOA (LEPIDOPTERA: NOCTUIDAE) XV. SEX PHEROMONE CROSS ATTRACTANCY AMONG THE THREE CLOSELY RELATED SPECIES OF THE DECLARATA GROUP

Byers¹,

Underhill²,

Steck³

et al. 1981

Can Entomol

Self Cite

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“…Druzhelyubova 1976, Poitout and Bues 1977) and adults of montane or northern populations of univoltine species often emerge earlier in the season than those at lower altitudes or latitudes (Iwao 1967;Milyanovskiy 1973). In the declarata group the reduction was due to strong conspecific mating biases, based on differences in mating activity rhythms (Teal et al 1978;Byers et al 1981), which are largely, but not completely, overwhelmed under no-choice, laboratory conditions. The length of period from eclosion to first oviposition varies considerably among Euxoa species.…”

Section: Growth and Developmentmentioning

confidence: 95%

“…Calling by virgin female moths, 5 to 9 per cage, was observed under the conditions used by Teal et al (1978) with a reversed, 12D:12L, photoperiod. The index is 1 if there is complete reproductive isolation and 0 if mating is random.…”

Section: Methodsmentioning

confidence: 99%

“…The release of sex pheromone by female Euxoa moths and the associated behavior (calling) is a die1 activity with a temporal pattern characteristic for each species (Teal et al 1978). The release of sex pheromone by female Euxoa moths and the associated behavior (calling) is a die1 activity with a temporal pattern characteristic for each species (Teal et al 1978).…”

Section: Mating Biasmentioning

confidence: 99%

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BIOSYSTEMATICS OF THE GENUS EUXOA (LEPIDOPTERA: NOCTUIDAE): XVI. COMPARATIVE BIOLOGY AND EXPERIMENTAL TAXONOMY OF FOUR SUBSPECIES OF EUXOA COMOSA

Byers¹,

Lafontaine²

1982

Can Entomol

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Can. Enr. 114: 551-565 (1982) Laboratory and experimental studies of four of the five subspecies of Euxoa comosa (Morr.), i.e. annir, altera, lutulenta and ontario, each formerly considered of specific rank, were undertaken to assess their taxonomic status. Morphologically the immature stages of the subspecies are similar although lutulenta has a 40-50% larger egg and the larvae of lutulenta and ontario are darker than those of annir and altera. The subspecies show differentiation in larval growth rate, number of larval instars, duration of preimaginal development and length of the preoviposition period. The possible adaptive significance of these differences are discussed. Hybrid F, were obtained from 11 of the 12 552 THE CANAD~AN ENTOMOLOGIST July 1982 certains caracttres taxonomiques typiques et considerations biogeographiques, conclut que Euxoa comosa est au mieux considCree comme une espkce polytypique comportant cinq sous-esptces. Volume 114 THE CANADIAN ENTOMOLOGIST 553

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“…In a more detailed study of circadian response patterns, Bartell & Chiang (1977) found that attraction of northern corn rootworm males to pheromone extracts peaked around midnight and was negligible at other times, whereas western corn rootworm males had a bimodal pattern with peaks occurring shortly after sunrise and again just before dusk. That temporal differences in male attraction could effectively isolate sibling species was demonstrated by Teal et al (1978) in a study of the genus Euxoa (Lepidoptera). However, changes in environmental conditions such as temperature can modify the circadian patterns of male response for several species of Lepidoptera (Carde eta/.…”

Section: Introductionmentioning

confidence: 96%

Field studies of the temporal response patterns of male Diabrotica virgifera virgifera LeConte and D. barberi Smith and Lawrence to 8R‐methyl‐2R‐decyl propanoate

Dobson¹,

Teal²

1986

Physiological Entomology

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Variations in the die1 response of male northern and western corn rootworms attracted to a synthetic pheromone source were examined in southwestern Ontario. Activity was measured by the number of males caught at hourly intervals in sticky traps baited with 8R-methyl-2R-decyl propanoate. Northern corn rootworm males were attracted to the pheromone between 22.30 and 0330 hours and were unresponsive at all other times at temperatures above 15°C. Western corn rootworm males had a bimodal response with peaks in attraction from 08.30 to 12.30 hours and again from 15.30 to 18.30 hours. While the period of peak attraction for northern corn rootworm males was well defined, the pattern for western corn rootworm males was erratic and many beetles were caught throughout the day. Evening temperatures below 15°C suppressed the activity of both northern and western corn rootworms. While the nightly period of activity for the northern corn rootworms was shifted by low temperatures to the following morning, that of the western corn rootworm was not altered substantially. As a result, peaks in the response of northern and western corn rootworm males occurred simultaneously under these conditions, suggesting strongly that temporal separation of activity periods was not an important factor in maintaining sexual isolation for these species in Ontario.

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

Cited by 20 publications

References 0 publications

BIOSYSTEMATICS OF THE GENUS EUXOA (LEPIDOPTERA: NOCTUIDAE) XV. SEX PHEROMONE CROSS ATTRACTANCY AMONG THE THREE CLOSELY RELATED SPECIES OF THE DECLARATA GROUP

BIOSYSTEMATICS OF THE GENUS EUXOA (LEPIDOPTERA: NOCTUIDAE) XV. SEX PHEROMONE CROSS ATTRACTANCY AMONG THE THREE CLOSELY RELATED SPECIES OF THE DECLARATA GROUP

BIOSYSTEMATICS OF THE GENUS EUXOA (LEPIDOPTERA: NOCTUIDAE): XVI. COMPARATIVE BIOLOGY AND EXPERIMENTAL TAXONOMY OF FOUR SUBSPECIES OF EUXOA COMOSA

Field studies of the temporal response patterns of male Diabrotica virgifera virgifera LeConte and D. barberi Smith and Lawrence to 8R‐methyl‐2R‐decyl propanoate

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