EVALUATING BAITS WITH LUFENURON AND NITENPYRAM FOR FLEA CONTROL ON PRAIRIE DOGS (CYNOMYS SPP.) TO MITIGATE PLAGUE.

Autor:	Eads DA; U.S. Geological Survey, Fort Collins Science Center, 2150 Centre Avenue, Building C, Fort Collins, Colorado 80526, USA., Castle KT; Wildlife Veterinary Consulting LLC, 840 Sundance Drive, Livermore, Colorado 80536, USA., Wild MA; Department of Veterinary Microbiology and Pathology, Washington State University, P.O. Box 647040, Pullman, Washington 99164, USA., Borchert JN; Division of Vector-Borne Diseases, Centers for Disease Control and Prevention, 3156 Rampart Road, Fort Collins, Colorado 80521, USA., Livieri TM; Prairie Wildlife Research, 1574 Timber Shores Drive, Stevens Point, Wisconsin 54481, USA., Matchett MR; U.S. Fish and Wildlife Service, Charles M. Russell National Wildlife Refuge, P.O. Box 110, 333 Airport Road Lewistown, Montana 59457, USA., Dobesh P; U.S. Forest Service, Wall Ranger District, 710 Main Street, Wall, South Dakota 57790, USA., Hughes JP; U.S. Fish and Wildlife Service, National Black-footed Ferret Conservation Center, P.O. Box 190, Carr, Colorado 80549, USA., Childers E; National Park Service, Badlands National Park, 25216 Ben Reifel Road, Interior, South Dakota 57750, USA.
Jazyk:	angličtina
Zdroj:	Journal of wildlife diseases [J Wildl Dis] 2023 Oct 01; Vol. 59 (4), pp. 662-672.
DOI:	10.7589/JWD-D-22-00168
Abstrakt:	Plague, caused by Yersinia pestis, is a widespread threat to endangered black-footed ferrets (Mustela nigripes) and their primary prey, prairie dogs (Cynomys spp.). Wildlife biologists most commonly manage plague using insecticides to control fleas, the primary vectors of Y. pestis. We tested edible baits containing the insecticides lufenuron and/or nitenpyram in prairie dogs. During a laboratory study, we treated 26 white-tailed prairie dogs (Cynomys leucurus) with lufenuron at 300 mg/kg body mass. All animals remained clinically healthy over the 9 wk monitoring period. Although serum lufenuron concentrations were >130 ppb in two treatment groups at week 1, concentrations declined to ≤60 ppb after 3 wk in non-torpid prairie dogs and after 7 wk in torpid prairie dogs. In a field experiment, we tested baits containing a combination of 75 mg lufenuron and 6 mg nitenpyram, respectively, in black-tailed prairie dogs (Cynomys ludovicianus). We uniformly distributed baits at 125 baits/ha on two plots (treated once) and 250 baits/ha on two plots (each treated twice 4.4 wk apart). Following treatments, flea abundance increased on prairie dogs and remained stable in burrows. Our findings indicate that baits containing lufenuron and nitenpyram, at the reported treatment rates, are ineffective tools for flea control on prairie dogs. Future experiments might evaluate efficacy of higher doses of lufenuron and nitenpyram, and repetitive treatments at differing intervals over time to evaluate potentially therapeutic treatments. (© Wildlife Disease Association 2023.)
Databáze:	MEDLINE
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