PMID- 26967139 OWN - NLM STAT- MEDLINE DCOM- 20171011 LR - 20171103 IS - 1943-3700 (Electronic) IS - 0090-3558 (Linking) VI - 52 IP - 2 DP - 2016 Apr 28 TI - THE STRUCTURE AND SEASONALITY OF BAYLISASCARIS PROCYONIS POPULATIONS IN RACCOONS (PROCYON LOTOR). PG - 286-92 LID - 10.7589/2015-06-153 [doi] AB - Baylisascaris procyonis , the raccoon ( Procyon lotor ) ascarid, is a common roundworm parasite of raccoons that is also a well-recognized zoonotic pathogen, and a cause for conservation concern. The transmission dynamics of B. procyonis differ with host population attributes, season, and landscape. We examined how the parasite's population attributes change with season, parasite population structure, and host demographics. We examined 1,050 raccoon gastrointestinal tracts collected from 1996 to 2012. Of the 1,050 raccoons necropsied, 382 (36%) were infected with at least one B. procyonis (x =15.8 [95% confidence interval=13.39-18.26]; median=7; range 1-199 worms/host), and populations were overdispersed. There was a seasonal change in prevalence with a peak in October/November. Worm burdens decreased approximately 28% per month from January to June and increased approximately 31% per month from June to December. The sex structure of B. procyonis populations was female-biased (56% female). Host demographics did not impact parasite population attributes. This study provides evidence that B. procyonis populations exhibit a yearly cycle of loss and recruitment that may impact the transmission dynamics of the parasite. FAU - Page, L Kristen AU - Page LK AD - 1 Wheaton College, 501 College Ave., Wheaton, Illinois 60187, USA. FAU - Delzell, Darcie A P AU - Delzell DA AD - 1 Wheaton College, 501 College Ave., Wheaton, Illinois 60187, USA. FAU - Gehrt, Stanley D AU - Gehrt SD AD - 2 The Ohio State University, 375B Kottman Hall, 2021 Coffey Road, Columbus, Ohio 43210, USA. AD - 3 Max McGraw Wildlife Foundation, PO Box 9, West Dundee, Illinois 60118, USA. FAU - Harrell, Elise D AU - Harrell ED AD - 1 Wheaton College, 501 College Ave., Wheaton, Illinois 60187, USA. FAU - Hiben, Mark AU - Hiben M AD - 1 Wheaton College, 501 College Ave., Wheaton, Illinois 60187, USA. FAU - Walter, Elizabeth AU - Walter E AD - 1 Wheaton College, 501 College Ave., Wheaton, Illinois 60187, USA. FAU - Anchor, Chris AU - Anchor C AD - 4 Forest Preserve District of Cook County, 536 N Harlem Ave., River Forest, Illinois 60305, USA. FAU - Kazacos, Kevin R AU - Kazacos KR AD - 5 Purdue University College of Veterinary Medicine, 625 Harrison St., West Lafayette, Indiana 47907, USA. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20160311 PL - United States TA - J Wildl Dis JT - Journal of wildlife diseases JID - 0244160 SB - IM MH - Aging MH - Animals MH - Ascaridida Infections/epidemiology/parasitology/*veterinary MH - Ascaridoidea/*physiology MH - Female MH - Male MH - Raccoons/*parasitology MH - *Seasons MH - United States/epidemiology OTO - NOTNLM OT - Baylisascaris procyonis OT - nematode OT - population OT - prevalence OT - seasonality EDAT- 2016/03/12 06:00 MHDA- 2017/10/12 06:00 CRDT- 2016/03/12 06:00 PHST- 2016/03/12 06:00 [entrez] PHST- 2016/03/12 06:00 [pubmed] PHST- 2017/10/12 06:00 [medline] AID - 10.7589/2015-06-153 [doi] PST - ppublish SO - J Wildl Dis. 2016 Apr 28;52(2):286-92. doi: 10.7589/2015-06-153. Epub 2016 Mar 11.