caa a22 4500 397570538 CHVBK 20180308164840.0 cr unu---uuuuu 161202e19961201xx s 000 0 eng 10.1093/ee/25.6.1376 doi (NATIONALLICENCE)oxford-10.1093/ee/25.6.1376 Seasonal Ecology and Geographical Distribution of Anaphes listronoti and A. victus (Hymenoptera: Mymaridae), Egg Parasitoids of the Carrot Weevil (Coleoptera: Curculionidae) in Central Ontario [Elektronische Daten] [Daniel Cormier, A. B. Stevenson, Guy Boivin] Field surveys were conducted during 3 yr in the Holland Marsh and district marshes to evaluate egg parasitism of the carrot weevil, Listronotus oregonensis (LeConte). Anaphes listronoti Huber was the dominant species in Ontario and was widely distributed in the sampled area. In commercial fields, up to 33% of the carrot weevil eggs were parasitized by Anaphes spp. In an untreated plot, parasitism averaged 68% and reached 94% in high density of carrot weevil eggs. Spring emergence of the parasitoids occurred from the end of April to mid-May, at which time the carrot weevil had begun its oviposition period in wild plants. Parasitoids had to complete between 1.6 and 2.3 generations outside the carrot fields before the appearance of carrot weevil eggs in plants. Parasitized eggs were observed in carrot fields from the beginning of the carrot weevil oviposition until September. © 1996 Entomological Society of America Population Ecology nationallicence Anaphes listronoti nationallicence Anaphes victus nationallicence Listronotus oregonensis nationallicence seasonal ecology nationallicence egg parasitoid nationallicence Cormier Daniel Department of Natural Resource Sciences, Macdonald campus of McGill University, Sainte-Anne-de-Bellevue, PQ, Canada H9X 3V9 aut Stevenson A. B. Department of Natural Resource Sciences, Macdonald campus of McGill University, Sainte-Anne-de-Bellevue, PQ, Canada H9X 3V9 aut Boivin Guy Department of Natural Resource Sciences, Macdonald campus of McGill University, Sainte-Anne-de-Bellevue, PQ, Canada H9X 3V9 aut Environmental Entomology Oxford University Press 25/6(1996-12-01), 1376-1382 0046-225X 25:6<1376 1996 25 ee https://doi.org/10.1093/ee/25.6.1376 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1093/ee/25.6.1376 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Cormier Daniel Department of Natural Resource Sciences, Macdonald campus of McGill University, Sainte-Anne-de-Bellevue, PQ, Canada H9X 3V9 aut NATIONALLICENCE 700 1- Stevenson A. B. Department of Natural Resource Sciences, Macdonald campus of McGill University, Sainte-Anne-de-Bellevue, PQ, Canada H9X 3V9 aut NATIONALLICENCE 700 1- Boivin Guy Department of Natural Resource Sciences, Macdonald campus of McGill University, Sainte-Anne-de-Bellevue, PQ, Canada H9X 3V9 aut NATIONALLICENCE 773 0- Environmental Entomology Oxford University Press 25/6(1996-12-01), 1376-1382 0046-225X 25:6<1376 1996 25 ee Metadata rights reserved CC BY-NC-4.0 http://creativecommons.org/licenses/by-nc/4.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-oxford