1 1 Full title: Transient definitive host presence is sufficient to sustain avian schistosome 2 populations 3 4 Short title: Transient definitive hosts support schistosome populations 5 6 Authors: Sydney P Rudko 1¶ , Brooke A McPhail 2¶ Ronald L Reimink 3,4 , Kelsey Froelich 2,4,5 , 7 Alyssa Turnbull 2 , Patrick C Hanington 2* 8 9 1. Public Health Agency of Canada, Agence de la Santé Publique du Canada, 200 René-Lévesque 10 Blvd., Montréal, Québec H2Z 1X4, Canada 11 2. School of Public Health, University of Alberta, 357F South Academic Building, 116 St. and 12 85th Ave., Alberta, Canada, T6G 2R3 13 3. Office of Campus Ministries, 110 E. 12th St. Hope College, Holland, MI, USA, 49423 14 4. Freshwater Solutions LLC, 6906 48th Ave, Hudsonville, MI, USA, 49426 15 5. Saint Joseph High School, 2521 Stadium Dr., Saint Joseph, MI, USA, 49085 16 ¶ Authors contributed equally to this manuscript 17 *To whom correspondence should be addressed. Patrick C. Hanington, [email protected] 18 19 Author contributions: 20 SPR: Data Curation, Formal Analysis, Investigation, Methodology, Project Administration, 21 Resources, Software, Validation, Writing – Original Draft. BAM: Data Curation, Formal 22 Analysis, Investigation, Resources, Software, Writing – Review & Editing. RLR: 23 Conceptualization, Data Curation, Project Administration, Resources, Methodology, Writing – 24 Review & Editing. KF: Data Curation, Resources, Writing – Review & Editing. AT: 25 Investigation, Software. PCH: Conceptualization, Funding Acquisition, Methodology, Project 26 Administration, Supervision, Visualization, Writing – Editing & Review. 27 . CC-BY 4.0 International license available under a (which was not certified by peer review) is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. It is made The copyright holder for this preprint this version posted October 6, 2021. ; https://doi.org/10.1101/2021.10.05.463157 doi: bioRxiv preprint