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008260901e202609##oncdb   ob   f000 0 eng d
020 |a9781100004037
040 |aCaOODSP|beng|erda|cCaOODSP
043 |an-cn-qu|an-cn-nf
0861 |aFs70-5/2026-064E-PDF
1001 |aRioux, Ève, |eauthor.
24510|aPotential mechanisms behind changing survey catchability in 4RSw Atlantic herring / |cÈve Rioux, Kim Émond, Caroline Lehoux, Elisabeth Van Beveren.
264 1|aOttawa : |bCanadian Science Advisory Secretariat (CSAS), |cSeptember 2026.
264 4|c©2026
300 |a1 online resource (iv, 37 pages) : |bcharts, maps.
336 |atext|btxt|2rdacontent
337 |acomputer|bc|2rdamedia
338 |aonline resource|bcr|2rdacarrier
4901 |aResearch document, |x1919-5044 ; |v2026/064
500 |aIssued also in French under title: Mécanismes potentiels influençant la capturabilité dans les relevés du hareng atlantique (4RSw).
504 |aIncludes bibliographical references (pages 20-24).
520 |a"This document aims to explore possible physiological and environmental mechanisms and to identify covariates linked to an apparent shift in catchability of herring in 4RSw. We first established the evidence for a delayed fall migration based on landing records and fish telemetry data, showing a 30–60 days temporal mismatch between the median fall acoustic survey date and the date of 50% cumulative landings in 4Rbc from 1991–2022. This shift was not tied to the timing of fall herring spawning. Rather, a delay in landings was associated with lower herring body condition in the fall, suggesting changes in feeding conditions prior to migration into the survey area. Habitat suitability maps suggested that environmental changes do not constrain herring migration into the survey area, but have become increasingly favourable in northern, unsurveyed waters"--Abstract, page iv.
650 0|aAtlantic herring|xMigration|zNewfoundland and Labrador|zAtlantic Coast.
650 0|aAtlantic herring|xMigration|zQuébec (Province)
650 0|aFish surveys|zNewfoundland and Labrador|zAtlantic Coast.
650 0|aFish surveys|zQuébec (Province)
7101 |aCanada. |bDepartment of Fisheries and Oceans. |bQuebec Region, |eissuing body.
7102 |aCanadian Science Advisory Secretariat, |eissuing body.
77508|tMécanismes potentiels influençant la capturabilité dans les relevés du hareng atlantique (4RSw) / |w(CaOODSP)9.965599
830#0|aResearch document (Canadian Science Advisory Secretariat)|v2026/064.|w(CaOODSP)9.507396
85640|qPDF|s4.59 MB|uhttps://publications.gc.ca/collections/collection_2026/mpo-dfo/fs70-5/Fs70-5-2026-064-eng.pdf