caa a22 4500 388093285 CHVBK 20180307125257.0 cr unu---uuuuu 161130e199906 xx s 000 0 eng 10.4039/Ent131399-3 doi S0008347X00010002 pii (NATIONALLICENCE)cambridge-10.4039/Ent131399-3 PARASITOIDS REARED FROM THE OBLIQUEBANDED LEAFROLLER (LEPIDOPTERA: TORTRICIDAE) INFESTING RASPBERRIES [Elektronische Daten] Fourteen species of parasitoids (13 hymenopterans, 1 dipteran) were reared from larvae or pupae of the obliquebanded leafroller, Choristoneura rosaceana (Harris), collected from commercial raspberry fields in the Fraser Valley, British Columbia, Canada, over 3 years. Levels of parasitism ranged from 5 to 15%. Among these 14 species, five represent new host records. A polyembryonic wasp, Macrocentrus nigridorsis Viereck (Hymenoptera: Braconidae), was the most abundant parasitoid. External feeding on the final host instar is obligatory for M. nigridorsis to complete development. On average, each parasitized host larva produced about 36 M. nigridorsis, in either unisexual or mixed-gender groups. Overall male to female sex ratio was 1:4. Head capsules of mature parasitized host larvae were significantly larger than those of unparasitized ones, suggesting that C. rosaceana larvae parasitized by M. nigridorsis might have an extra larval stage. Copyright © Entomological Society of Canada 1999 Li S.Y. Atlantic Forestry Centre, Canadian Forest Service, Natural Resources Canada, P.O. Box 960, University Drive, Corner Brook, Newfoundland, Canada A2H 6J3 Fitzpatrick S.M. Pacific Agri-Food Research Centre, Agriculture and Agri-Food Canada, 6947 No. 7 Highway, P.O. Box 1000, Agassiz, British Columbia, Canada VOM 1AO Troubridge J.T. Pacific Agri-Food Research Centre, Agriculture and Agri-Food Canada, 6947 No. 7 Highway, P.O. Box 1000, Agassiz, British Columbia, Canada VOM 1AO Sharkey M.J. Department of Entomology, College of Agriculture, University of Kentucky, Lexington, Kentucky, United States 40546-0091 Barron J.R. Eastern Cereal and Oilseed Research Centre, Agriculture and Agri-Food Canada, Ottawa, Ontario, Canada KlA OC6 O'Hara J.E. Eastern Cereal and Oilseed Research Centre, Agriculture and Agri-Food Canada, Ottawa, Ontario, Canada KlA OC6 The Canadian Entomologist Cambridge University Press 131/3(1999-06), 399-404 0008-347X 131:3<399 1999 131 TCE https://doi.org/10.4039/Ent131399-3 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.4039/Ent131399-3 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Li S.Y. Atlantic Forestry Centre, Canadian Forest Service, Natural Resources Canada, P.O. Box 960, University Drive, Corner Brook, Newfoundland, Canada A2H 6J3 NATIONALLICENCE 700 1- Fitzpatrick S.M. Pacific Agri-Food Research Centre, Agriculture and Agri-Food Canada, 6947 No. 7 Highway, P.O. Box 1000, Agassiz, British Columbia, Canada VOM 1AO NATIONALLICENCE 700 1- Troubridge J.T. Pacific Agri-Food Research Centre, Agriculture and Agri-Food Canada, 6947 No. 7 Highway, P.O. Box 1000, Agassiz, British Columbia, Canada VOM 1AO NATIONALLICENCE 700 1- Sharkey M.J. Department of Entomology, College of Agriculture, University of Kentucky, Lexington, Kentucky, United States 40546-0091 NATIONALLICENCE 700 1- Barron J.R. Eastern Cereal and Oilseed Research Centre, Agriculture and Agri-Food Canada, Ottawa, Ontario, Canada KlA OC6 NATIONALLICENCE 700 1- O'Hara J.E. Eastern Cereal and Oilseed Research Centre, Agriculture and Agri-Food Canada, Ottawa, Ontario, Canada KlA OC6 NATIONALLICENCE 773 0- The Canadian Entomologist Cambridge University Press 131/3(1999-06), 399-404 0008-347X 131:3<399 1999 131 TCE CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-cambridge