| Development and Survival of Orius insidiosus (Say) Nymphs on Encapsulated Bee Pollen-Based Diet in a Tier-I Toxicity Assay. | |
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MedLine Citation:
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PMID: 22217780 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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The insidious flower bug, Orius insidiosus (Say) (Heteroptera: Anthocoridae) is an important surrogate species for assessing potential effects of plant-incorporated protectants (PIPs) on nontarget heterotrophic predators. In this study, a continuous dietary exposure system was optimized by assessing the effect of diet composition and age on the survival and development of nymphs of O. insidiosus. Greater than 85% control survival and an acceptable rate of development from nymph hatching to adult was achieved using 5-d-old nymphs at test initiation and a bee pollen-based diet supplemented with 25% Ephestia eggs. There was an unacceptable level of mortality (>40%) and/or a significantly prolonged development time when nymphs were <5 d old at test initiation. When 5-d-old nymphs were fed a bee pollen diet containing 25% Ephestia eggs and 100 μg/g potassium arsenate, time-dependent mortality was observed with a median lethal time (LT(50)) of 4.4 d and 100% mortality was observed after 10 d of feeding, indicating the effectiveness of the test system to detect adverse effects by dietary exposure. It is recommended that well-defined 5-d-old nymphs and an encapsulated bee pollen-based diet containing 25% ground Ephestia eggs be used in a Tier-I dietary feeding exposure assay for detecting potential effects of PIPs on O. insidiosus nymphs. |
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Authors:
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Jianguo Tan; Mark S Paradise; Steven L Levine; Pamela M Bachman; Joshua P Uffman; Changjian Jiang; David B Carson |
Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Environmental entomology Volume: 40 ISSN: 1938-2936 ISO Abbreviation: Environ. Entomol. Publication Date: 2011 Dec |
Date Detail:
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Created Date: 2012-01-05 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 7502320 Medline TA: Environ Entomol Country: United States |
Other Details:
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Languages: eng Pagination: 1613-21 Citation Subset: IM |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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