{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,9]],"date-time":"2026-09-09T03:06:45Z","timestamp":1788923205755,"version":"build-2803163510"},"reference-count":18,"publisher":"Wiley","license":[{"start":{"date-parts":[[2026,9,8]],"date-time":"2026-09-08T00:00:00Z","timestamp":1788825600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0\/"},{"start":{"date-parts":[[2026,9,8]],"date-time":"2026-09-08T00:00:00Z","timestamp":1788825600000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"funder":[{"DOI":"10.13039\/501100000780","name":"European Commission","doi-asserted-by":"publisher","award":["EFMVB\u201023\u20100011"],"award-info":[{"award-number":["EFMVB\u201023\u20100011"]}],"id":[{"id":"10.13039\/501100000780","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Journal of Fish Biology"],"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>\n                    Averages of prey mass in fish stomachs are widely used to track changes in feeding. Yet, a mean over all stomachs is the exact product of two quantities\u2014the frequency of occurrence of a prey and its mean content in the stomachs that contained it\u2014which can move in opposite directions. In Atlantic cod (\n                    <jats:italic>Gadus morhua<\/jats:italic>\n                    L.) in the Baltic Sea, a stable mean benthos content concealed a falling content of consumers and a rising frequency of occurrence, opposing trends that can signal density dependence or responses to hypoxia.\n                  <\/jats:p>","DOI":"10.1111\/jfb.70649","type":"journal-article","created":{"date-parts":[[2026,9,9]],"date-time":"2026-09-09T02:22:15Z","timestamp":1788920535000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["More often, less each: Averaging can hide opposing trends in prey occurrence and consumer stomach content"],"prefix":"10.1111","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-8574-3257","authenticated-orcid":false,"given":"S.","family":"Neuenfeldt","sequence":"first","affiliation":[{"name":"National Institute of Aquatic Resources (DTU Aqua) Technical University of Denmark  Kgs. Lyngby Denmark"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2026,9,8]]},"reference":[{"key":"e_1_2_5_2_1","first-page":"901","article-title":"On the distribution of a positive random variable having a discrete probability mass at the origin","volume":"50","author":"Aitchison J.","year":"1955","journal-title":"Journal of the American Statistical Association"},{"key":"e_1_2_5_3_1","doi-asserted-by":"crossref","first-page":"607","DOI":"10.1111\/j.1095-8649.1996.tb01455.x","article-title":"A new approach to graphical analysis of feeding strategy from stomach contents data\u2014Modification of the Costello (1990) method","volume":"48","author":"Amundsen P.\u2010A.","year":"1996","journal-title":"Journal of Fish Biology"},{"key":"e_1_2_5_4_1","doi-asserted-by":"crossref","first-page":"1198","DOI":"10.1111\/j.1095-8649.2001.tb00186.x","article-title":"A gastric evacuation model for three predatory gadoids and implications of using pooled field data of stomach contents to estimate food rations","volume":"59","author":"Andersen N. 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A comment on Sved\u00e4ng et al., (2022)","volume":"79","author":"Brander K.","year":"2022","journal-title":"ICES Journal of Marine Science"},{"key":"e_1_2_5_7_1","doi-asserted-by":"crossref","DOI":"10.1098\/rsos.160416","article-title":"Hypoxic areas, density\u2010dependence and food limitation drive the body condition of a heavily exploited marine fish predator","volume":"3","author":"Casini M.","year":"2016","journal-title":"Royal Society Open Science"},{"key":"e_1_2_5_8_1","first-page":"472","article-title":"Reduced growth of Atlantic cod in non\u2010lethal hypoxic conditions","volume":"55","author":"Chabot D.","year":"1999","journal-title":"Journal of Fish Biology"},{"key":"e_1_2_5_9_1","doi-asserted-by":"crossref","first-page":"261","DOI":"10.1111\/j.1095-8649.1990.tb05601.x","article-title":"Predator feeding strategy and prey importance: A new graphical analysis","volume":"36","author":"Costello M. 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