PMID- 30842452 OWN - NLM STAT- MEDLINE DCOM- 20200924 LR - 20200924 IS - 2045-2322 (Electronic) IS - 2045-2322 (Linking) VI - 9 IP - 1 DP - 2019 Mar 6 TI - Multidimensional approach to formulating a specialized diet for northern corn rootworm larvae. PG - 3709 LID - 10.1038/s41598-019-39709-x [doi] LID - 3709 AB - The northern corn rootworm (NCR), Diabrotica barberi Smith & Lawrence, is a major pest of maize (Zea mays L.). This pest has developed resistance to insecticides and adapted to crop rotation and may already be in the early stages of adaptation to toxins produced by Bacillus thuringiensis (Bt). Toxicity bioassays using artificial diet have proven to be valuable for monitoring resistance in many species, but no artificial diet has been developed specifically for NCR larvae. Toward this end, we first evaluated known Diabrotica diets to identify a starting media. We then developed a specialized diet for NCR using an iterative approach. Screening designs including 8 diet components were performed to identify the principal nutritional components contributing to multiple developmental parameters (survival, weight, and molting). We then applied mixture designs coupled with response surface modeling to optimize a blend of those components. Finally, we validated an improved NCR diet formulation that supports approximately 97% survival and molting, and a 150% increase in larval weight after 10 days of feeding compared with the best previously published artificial diet. This formulation appears suitable for use in diet bioassays as a tool for evaluating the resistance of NCR populations to insecticides. FAU - Huynh, Man P AU - Huynh MP AD - Division of Plant Sciences, University of Missouri, Columbia, Missouri, 65211, USA. mphd32@missouri.edu. FAU - Hibbard, Bruce E AU - Hibbard BE AUID- ORCID: 0000-0001-8067-4416 AD - Plant Genetics Research Unit, USDA-Agricultural Research Service, Columbia, Missouri, 65211, USA. FAU - Lapointe, Stephen L AU - Lapointe SL AD - U.S. Horticultural Research Laboratory, USDA-Agricultural Research Service, Fort Pierce, Florida, 34945, USA. FAU - Niedz, Randall P AU - Niedz RP AD - U.S. Horticultural Research Laboratory, USDA-Agricultural Research Service, Fort Pierce, Florida, 34945, USA. FAU - French, B Wade AU - French BW AD - North Central Agricultural Research Laboratory, USDA-Agricultural Research Service, Brookings, South Dakota, 57006, USA. FAU - Pereira, Adriano E AU - Pereira AE AD - Plant Genetics Research Unit, USDA-Agricultural Research Service, Columbia, Missouri, 65211, USA. FAU - Finke, Deborah L AU - Finke DL AD - Division of Plant Sciences, University of Missouri, Columbia, Missouri, 65211, USA. FAU - Shelby, Kent S AU - Shelby KS AUID- ORCID: 0000-0001-9859-3497 AD - Biological Control of Insects Research Laboratory, USDA-Agricultural Research Service, Columbia, Missouri, 65203, USA. FAU - Coudron, Thomas A AU - Coudron TA AD - Biological Control of Insects Research Laboratory, USDA-Agricultural Research Service, Columbia, Missouri, 65203, USA. LA - eng PT - Journal Article DEP - 20190306 PL - England TA - Sci Rep JT - Scientific reports JID - 101563288 RN - 0 (Bacterial Proteins) RN - 0 (Endotoxins) RN - 0 (Insecticides) SB - IM EIN - Sci Rep. 2020 Jan 15;10(1):746. PMID: 31937872 MH - Animals MH - Bacillus thuringiensis/genetics MH - Bacterial Proteins MH - Coleoptera/metabolism/*physiology MH - Diet/*methods MH - Endotoxins MH - Food, Formulated/*parasitology MH - Insecticides MH - Larva/physiology MH - Plant Roots MH - Plants, Genetically Modified MH - Zea mays/genetics PMC - PMC6403226 COIS- The authors declare no competing interests. EDAT- 2019/03/08 06:00 MHDA- 2020/09/25 06:00 PMCR- 2019/03/06 CRDT- 2019/03/08 06:00 PHST- 2018/08/28 00:00 [received] PHST- 2019/01/29 00:00 [accepted] PHST- 2019/03/08 06:00 [entrez] PHST- 2019/03/08 06:00 [pubmed] PHST- 2020/09/25 06:00 [medline] PHST- 2019/03/06 00:00 [pmc-release] AID - 10.1038/s41598-019-39709-x [pii] AID - 39709 [pii] AID - 10.1038/s41598-019-39709-x [doi] PST - epublish SO - Sci Rep. 2019 Mar 6;9(1):3709. doi: 10.1038/s41598-019-39709-x.