caa a22 4500 388092890 CHVBK 20180307125256.0 cr unu---uuuuu 161130e199902 xx s 000 0 eng 10.4039/Ent13179-1 doi S0008347X0000969X pii (NATIONALLICENCE)cambridge-10.4039/Ent13179-1 FEEDING BEHAVIOUR OF THE FIRST-INSTAR CHORISTONEURA FUMIFERANA AND CHORISTONEURA PINUS PINUS (LEPIDOPTERA: TORTRICIDAE) [Elektronische Daten] 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. Copyright © Entomological Society of Canada 1999 Retnakaran A. Great Lakes Forestry Centre, Canadian Forest Service, Natural Resources Canada, Sault Ste. Marie, Ontario, Canada P6A 5M7 Tomkins W.L. Great Lakes Forestry Centre, Canadian Forest Service, Natural Resources Canada, Sault Ste. Marie, Ontario, Canada P6A 5M7 Primavera M.J. Great Lakes Forestry Centre, Canadian Forest Service, Natural Resources Canada, Sault Ste. Marie, Ontario, Canada P6A 5M7 Palli S.R. Great Lakes Forestry Centre, Canadian Forest Service, Natural Resources Canada, Sault Ste. Marie, Ontario, Canada P6A 5M7 The Canadian Entomologist Cambridge University Press 131/1(1999-02), 79-84 0008-347X 131:1<79 1999 131 TCE https://doi.org/10.4039/Ent13179-1 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.4039/Ent13179-1 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Retnakaran A. Great Lakes Forestry Centre, Canadian Forest Service, Natural Resources Canada, Sault Ste. Marie, Ontario, Canada P6A 5M7 NATIONALLICENCE 700 1- Tomkins W.L. Great Lakes Forestry Centre, Canadian Forest Service, Natural Resources Canada, Sault Ste. Marie, Ontario, Canada P6A 5M7 NATIONALLICENCE 700 1- Primavera M.J. Great Lakes Forestry Centre, Canadian Forest Service, Natural Resources Canada, Sault Ste. Marie, Ontario, Canada P6A 5M7 NATIONALLICENCE 700 1- Palli S.R. Great Lakes Forestry Centre, Canadian Forest Service, Natural Resources Canada, Sault Ste. Marie, Ontario, Canada P6A 5M7 NATIONALLICENCE 773 0- The Canadian Entomologist Cambridge University Press 131/1(1999-02), 79-84 0008-347X 131:1<79 1999 131 TCE CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-cambridge