{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,11,7]],"date-time":"2025-11-07T09:12:30Z","timestamp":1762506750840},"reference-count":20,"publisher":"Wiley","issue":"11","license":[{"start":{"date-parts":[[2016,2,24]],"date-time":"2016-02-24T00:00:00Z","timestamp":1456272000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"funder":[{"DOI":"10.13039\/501100002784","name":"Canada Excellence Research Chairs, Government of Canada","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100002784","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Journal of Fish Diseases"],"published-print":{"date-parts":[[2016,11]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>Treatment efficacy studies typically use pre\u2010treatment sea lice abundance as the baseline. However, the pre\u2010treatment counting window often varies from the day of treatment to several days before treatment. We assessed the effect of lead time on baseline estimates, using historical data (2010\u201314) from a sea lice data management programme (Fish\u2010iTrends). Data were aggregated at the cage level for three life stages: (i) chalimus, (ii) pre\u2010adult and adult male and (iii) adult female. Sea lice counts were log\u2010transformed, and mean counts by lead time relative to treatment day were computed and compared separately for each life stage, using linear mixed models. There were 1,658 observations (treatment events) from 56 sites in 5 Bay Management Areas. Our study showed that lead time had a significant effect on the estimated sea lice abundance, which was moderated by season. During the late summer and autumn periods, counting on the day of treatment gave significantly higher values than other days and would be a more appropriate baseline estimate, while during spring and early summer abundance estimates were comparable among counts within 5\u00a0days of treatment. A season\u2010based lead time window may be most appropriate when estimating baseline sea lice levels.<\/jats:p>","DOI":"10.1111\/jfd.12460","type":"journal-article","created":{"date-parts":[[2016,2,26]],"date-time":"2016-02-26T08:14:59Z","timestamp":1456474499000},"page":"1297-1303","source":"Crossref","is-referenced-by-count":11,"title":["Variation in pre\u2010treatment count lead time and its effect on baseline estimates of cage\u2010level sea lice abundance"],"prefix":"10.1111","volume":"39","author":[{"given":"R","family":"Gautam","sequence":"first","affiliation":[{"name":"Department of Health Management and Centre for Vet Epi Research Atlantic Veterinary College University of Prince Edward Island Charlottetown PE Canada"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"A S","family":"Boerlage","sequence":"additional","affiliation":[{"name":"Department of Health Management and Centre for Vet Epi Research Atlantic Veterinary College University of Prince Edward Island Charlottetown PE Canada"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"R","family":"Vanderstichel","sequence":"additional","affiliation":[{"name":"Department of Health Management and Centre for Vet Epi Research Atlantic Veterinary College University of Prince Edward Island Charlottetown PE Canada"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"C W","family":"Revie","sequence":"additional","affiliation":[{"name":"Department of Health Management and Centre for Vet Epi Research Atlantic Veterinary College University of Prince Edward Island Charlottetown PE Canada"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"K L","family":"Hammell","sequence":"additional","affiliation":[{"name":"Department of Health Management and Centre for Vet Epi Research Atlantic Veterinary College University of Prince Edward Island Charlottetown PE Canada"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2016,2,24]]},"reference":[{"key":"e_1_2_6_2_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.icesjms.2006.04.017"},{"key":"e_1_2_6_3_1","doi-asserted-by":"publisher","DOI":"10.1163\/18759866-0690102005"},{"key":"e_1_2_6_4_1","doi-asserted-by":"publisher","DOI":"10.1002\/9780470961568.ch3"},{"key":"e_1_2_6_5_1","doi-asserted-by":"publisher","DOI":"10.1098\/rspb.2009.0771"},{"key":"e_1_2_6_6_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1365-2761.2008.01011.x"},{"key":"e_1_2_6_7_1","unstructured":"DFO(2014)Sea lice monitoring and non\u2010chemical measures. DFO Canadian Science Advisory Secretariat Science Advisory Report 2014\/006. Available athttp:\/\/www.dfo-mpo.gc.ca\/csas-sccs\/publications\/sar-as\/2014\/2014006-eng.pdf(Accessed December 7 2015)."},{"key":"e_1_2_6_8_1","first-page":"553","volume-title":"Veterinary Epidemiologic Research","author":"Dohoo I.","year":"2009"},{"key":"e_1_2_6_9_1","doi-asserted-by":"publisher","DOI":"10.1111\/jfd.12051"},{"key":"e_1_2_6_10_1","doi-asserted-by":"publisher","DOI":"10.1002\/ps.481"},{"key":"e_1_2_6_11_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1365-2761.2006.00761.x"},{"key":"e_1_2_6_12_1","doi-asserted-by":"publisher","DOI":"10.1017\/S0025315400051687"},{"key":"e_1_2_6_13_1","unstructured":"JonesS.&JohnsonS.(2015)Biology of sea lice Lepeophtheirus salmonis and Caligus spp. in western and eastern Canada. DFO Canada Science Advisory Secretariat Research Document. 2014\/019. pp.iv\u201318."},{"key":"e_1_2_6_14_1","doi-asserted-by":"publisher","DOI":"10.3354\/dao02517"},{"key":"e_1_2_6_15_1","doi-asserted-by":"publisher","DOI":"10.1371\/journal.pone.0001549"},{"key":"e_1_2_6_16_1","doi-asserted-by":"publisher","DOI":"10.1038\/sj.ebd.6400375"},{"key":"e_1_2_6_17_1","first-page":"113","article-title":"Life\u2010span and reproductive capacity of sea lice, Lepeophtheirus salmonis, under laboratory conditions","volume":"4","author":"Mustafa A.","year":"2000","journal-title":"Special Publication\u2010Aquaculture Association of Canada"},{"key":"e_1_2_6_18_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.physbeh.2014.04.031"},{"key":"e_1_2_6_19_1","unstructured":"R CoreTeam(2014)R: A language and environment for statistical computing. 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