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Andersen JF, Metcalf RL. Factors influencing distribution ofDiabrotica spp. in blossoms of cultivatedCucurbita spp. J Chem Ecol. 1987;13(4):681-99doi: 10.1007/BF01020152.
Andersen, J. F., & Metcalf, R. L. (1987). Factors influencing distribution ofDiabrotica spp. in blossoms of cultivatedCucurbita spp. Journal of chemical ecology, 13(4), 681-99. https://doi.org/10.1007/BF01020152
Andersen, J F, and Metcalf, R L. "Factors influencing distribution ofDiabrotica spp. in blossoms of cultivatedCucurbita spp." Journal of chemical ecology vol. 13,4 (1987): 681-99. doi: https://doi.org/10.1007/BF01020152
Andersen JF, Metcalf RL. Factors influencing distribution ofDiabrotica spp. in blossoms of cultivatedCucurbita spp. J Chem Ecol. 1987 Apr;13(4):681-99. doi: 10.1007/BF01020152. PMID: 24302038.
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J Chem Ecol. 1987 Apr;13(4):681-99. doi: 10.1007/BF01020152.

Factors influencing distribution ofDiabrotica spp. in blossoms of cultivatedCucurbita spp.

Journal of chemical ecology

J F Andersen, R L Metcalf

Affiliations

  1. Department of Entomology, University of Illinois, 61801, Urbana, Illinois.

PMID: 24302038 DOI: 10.1007/BF01020152

Abstract

Cultivars representing three species ofCucurbita were examined for blossom preference byDiabrotica spp.C. maxima cultivars were found to be preferred byD. undecimpunctata howardi over those ofC. pepo andC. moschata.D. virgifera virgifera preferredC. maxima and the "Connecticut Field" cultivar ofC. pepo.C. moschata and other cultivars ofC. pepo were not preferred. Cultivars were examined for differences in floral volatile release, blossom cucurbitacin content, and pollen content of male blossoms.C. maxima male blossoms released a larger quantity of volatiles thanC. pepo orC. moschata. Also, onlyC. maxima male blossoms contained cucurbitacins. Cultivars ofC. moschata contained the largest quantities of pollen, but all three species contained relatively large quantities. The data indicate a correspondence ofD. u. howardi distribution in the field with high volatile release rates and high cucurbitacin levels that are found inC. maxima blossoms.D. v. virgifera distribution appears to be somewhat independent of these factors since this species was abundant in blossoms of aC. pepo cultivar as well as cultivars ofC. maxima.

References

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