Susceptibility of the Carrot Weevil
(Coleoptera: Curculionidae) to Steinernema feltiae,S. bibionis,and Heterorhabditis heliothidis |
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Authors: | Guy Bélair Guy Boivin |
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Abstract: | Larvae, pupae, and adults of the carrot weevil (Listronotus oregonensis) were infected and killed by the three entomophagous nematodes (Steinernema feltiae, S. bibionis, and Heterorhabditis heliothidis) under controlled conditions. Third-stage larvae were more susceptible than pupae or adults. S. feltiae and S. bibionis were the most aggressive nematode species, causing larval mortality after 24-48 hours in both continuous and 2-hour contact with nematode suspension. The nematodes multiplied sufficiently in all insects at all stages of development; however, production of infective-stage larvae per host cadaver was variable. |
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Keywords: | entomogenous nematodes Listronotus oregonensis control |
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