Feeding behaviour of the first-instar Choristoneura fumiferana and Choristoneura pinus pinus (Lepidoptera: Tortricidae)

A. Retnakaran; W. L. Tomkins; M. J. Primavera; S. R. Palli

doi:10.4039/Ent13179-1

Feeding behaviour of the first-instar Choristoneura fumiferana and Choristoneura pinus pinus (Lepidoptera: Tortricidae)

A. Retnakaran, W. L. Tomkins, M. J. Primavera, S. R. Palli

Research output: Contribution to journal › Article › peer-review

15 Scopus citations

Abstract

We have discovered that, contrary to the long-held belief, 1st-instar spruce budworm, Choristoneura fumiferana Clemens, do feed. They display red alimentary tracts if they are provided with diet containing the red dye amaranth. They graze on the surface of balsam fir needles sprayed with rhodamine and ingest the fluorescent material, which can be detected in the frass pellets deposited inside the hibernacula. When emerging 1st instars were allowed to crawl on the inside surface of a glass tube coated with the polyhedral inclusion bodies of a recombinant C. fumiferana virus containing the gene for the green fluorescent protein, the larvae showed the characteristic green fluorescence, indicating that not only had they ingested the occlusion bodies but also the virus had replicated and infected different tissues. Similar results were obtained with the jack pine budworm, Choristoneura pinus pinus Freeman, which has an identical life history. The advantages of early-instar intervention to minimize defoliation by using control agents such as the ecdysteroid agonist, tebufenozide (RH-5992, Mimic® formulation), are discussed.

Original language	English
Pages (from-to)	79-84
Number of pages	6
Journal	Canadian Entomologist
Volume	131
Issue number	1
DOIs	https://doi.org/10.4039/Ent13179-1
State	Published - 1999

Bibliographical note

Funding Information:
We thank S.S. Sohi and G.G. Grant (Canadian Forest Service, Sault Ste. Marie) for critical comments and K. Jamieson (Canadian Forest Service, Sault Ste. Marie) for editorial help on the manuscript. This study was supported by theCanadian Forest Service, the National Biotechnology Strategy Fund, and Rohm and Haas Canada Inc.

Funding

We thank S.S. Sohi and G.G. Grant (Canadian Forest Service, Sault Ste. Marie) for critical comments and K. Jamieson (Canadian Forest Service, Sault Ste. Marie) for editorial help on the manuscript. This study was supported by theCanadian Forest Service, the National Biotechnology Strategy Fund, and Rohm and Haas Canada Inc.

Funders	Funder number
National Biotechnology Strategy Fund
Rohm and Haas Canada Inc.
U.S. Dept. of Agriculture Forest Service

ASJC Scopus subject areas

Structural Biology
Ecology, Evolution, Behavior and Systematics
Physiology
Molecular Biology
Insect Science

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10.4039/Ent13179-1

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title = "Feeding behaviour of the first-instar Choristoneura fumiferana and Choristoneura pinus pinus (Lepidoptera: Tortricidae)",

abstract = "We have discovered that, contrary to the long-held belief, 1st-instar spruce budworm, Choristoneura fumiferana Clemens, do feed. They display red alimentary tracts if they are provided with diet containing the red dye amaranth. They graze on the surface of balsam fir needles sprayed with rhodamine and ingest the fluorescent material, which can be detected in the frass pellets deposited inside the hibernacula. When emerging 1st instars were allowed to crawl on the inside surface of a glass tube coated with the polyhedral inclusion bodies of a recombinant C. fumiferana virus containing the gene for the green fluorescent protein, the larvae showed the characteristic green fluorescence, indicating that not only had they ingested the occlusion bodies but also the virus had replicated and infected different tissues. Similar results were obtained with the jack pine budworm, Choristoneura pinus pinus Freeman, which has an identical life history. The advantages of early-instar intervention to minimize defoliation by using control agents such as the ecdysteroid agonist, tebufenozide (RH-5992, Mimic{\textregistered} formulation), are discussed.",

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note = "Funding Information: We thank S.S. Sohi and G.G. Grant (Canadian Forest Service, Sault Ste. Marie) for critical comments and K. Jamieson (Canadian Forest Service, Sault Ste. Marie) for editorial help on the manuscript. This study was supported by theCanadian Forest Service, the National Biotechnology Strategy Fund, and Rohm and Haas Canada Inc.",

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doi = "10.4039/Ent13179-1",

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volume = "131",

pages = "79--84",

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AU - Tomkins, W. L.

AU - Primavera, M. J.

AU - Palli, S. R.

N1 - Funding Information: We thank S.S. Sohi and G.G. Grant (Canadian Forest Service, Sault Ste. Marie) for critical comments and K. Jamieson (Canadian Forest Service, Sault Ste. Marie) for editorial help on the manuscript. This study was supported by theCanadian Forest Service, the National Biotechnology Strategy Fund, and Rohm and Haas Canada Inc.

PY - 1999

Y1 - 1999

N2 - We have discovered that, contrary to the long-held belief, 1st-instar spruce budworm, Choristoneura fumiferana Clemens, do feed. They display red alimentary tracts if they are provided with diet containing the red dye amaranth. They graze on the surface of balsam fir needles sprayed with rhodamine and ingest the fluorescent material, which can be detected in the frass pellets deposited inside the hibernacula. When emerging 1st instars were allowed to crawl on the inside surface of a glass tube coated with the polyhedral inclusion bodies of a recombinant C. fumiferana virus containing the gene for the green fluorescent protein, the larvae showed the characteristic green fluorescence, indicating that not only had they ingested the occlusion bodies but also the virus had replicated and infected different tissues. Similar results were obtained with the jack pine budworm, Choristoneura pinus pinus Freeman, which has an identical life history. The advantages of early-instar intervention to minimize defoliation by using control agents such as the ecdysteroid agonist, tebufenozide (RH-5992, Mimic® formulation), are discussed.

AB - We have discovered that, contrary to the long-held belief, 1st-instar spruce budworm, Choristoneura fumiferana Clemens, do feed. They display red alimentary tracts if they are provided with diet containing the red dye amaranth. They graze on the surface of balsam fir needles sprayed with rhodamine and ingest the fluorescent material, which can be detected in the frass pellets deposited inside the hibernacula. When emerging 1st instars were allowed to crawl on the inside surface of a glass tube coated with the polyhedral inclusion bodies of a recombinant C. fumiferana virus containing the gene for the green fluorescent protein, the larvae showed the characteristic green fluorescence, indicating that not only had they ingested the occlusion bodies but also the virus had replicated and infected different tissues. Similar results were obtained with the jack pine budworm, Choristoneura pinus pinus Freeman, which has an identical life history. The advantages of early-instar intervention to minimize defoliation by using control agents such as the ecdysteroid agonist, tebufenozide (RH-5992, Mimic® formulation), are discussed.

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Feeding behaviour of the first-instar Choristoneura fumiferana and Choristoneura pinus pinus (Lepidoptera: Tortricidae)

Abstract

Bibliographical note

Funding

ASJC Scopus subject areas

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