{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,11,8]],"date-time":"2025-11-08T12:21:04Z","timestamp":1762604464355,"version":"build-2065373602"},"reference-count":39,"publisher":"MDPI AG","issue":"21","license":[{"start":{"date-parts":[[2024,10,29]],"date-time":"2024-10-29T00:00:00Z","timestamp":1730160000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100005416","name":"Research Council of Norway","doi-asserted-by":"publisher","award":["269043","901798"],"award-info":[{"award-number":["269043","901798"]}],"id":[{"id":"10.13039\/501100005416","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100010197","name":"Norwegian Seafood Research Fund","doi-asserted-by":"publisher","award":["269043","901798"],"award-info":[{"award-number":["269043","901798"]}],"id":[{"id":"10.13039\/501100010197","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Animals"],"abstract":"<jats:p>The aim of this study was to build on the work already conducted in optimising lumpfish broodstock temperature, photoperiod and nutrition by providing vital information on the stress relationship between mucosal barrier functions and the sexual development of lumpfish broodstock. From a population of approx. 300 fish of 1587 g (SEM \u00b1 704 g), a sub-population of 20 fish was injected with 30 mg\/kg fish cortisol implants on 5 January 2018. The control group was not treated with implants. The stress-induced cortisol implant group showed elevated plasma cortisol over a period of approximately one month. Analyses of mucus cell area and density suggested that induced stress could produce a positive functional response (stimulus) in lumpfish early in the experiment through a gentle increase in the barrier strength of the skin, reduced mucus cell size and increased density of mucous cells, resulting in a strengthening of the respiratory capacity of the gills. Mucous cell density and calculated barrier strength in the skin were significantly negatively correlated with plasma cortisol, while in the gill filaments of females, there was a significant negative correlation between mucous cell density and oestrogen levels. The reduced density of \u201cempty\u201d cells (Q cells) after stress induction indicates that these cells are important for the maintenance of homeostasis (physiological equilibrium). The fish in this experiment were considered more robust compared to previous analyses on smaller lumpfish.<\/jats:p>","DOI":"10.3390\/ani14213114","type":"journal-article","created":{"date-parts":[[2024,10,29]],"date-time":"2024-10-29T08:42:09Z","timestamp":1730191329000},"page":"3114","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["The Effect of Stress on the Skin Welfare of Lumpfish (Cyclopterus lumpus Linnaeus, 1758) Broodstock"],"prefix":"10.3390","volume":"14","author":[{"given":"Thor Magne","family":"Jonassen","sequence":"first","affiliation":[{"name":"Akvaplan-niva AS, Oslo Office, \u00d8kernveien 94, 0579 Oslo, Norway"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0077-8077","authenticated-orcid":false,"given":"Albert Kjartan Dagbjartarson","family":"Imsland","sequence":"additional","affiliation":[{"name":"Akvaplan-niva AS, Iceland Office, Akralind 6, 201 K\u00f3pavogur, Iceland"},{"name":"Department of Biological Sciences, University of Bergen, High Technology Centre, 5020 Bergen, Norway"}]},{"given":"Karin","family":"Pittman","sequence":"additional","affiliation":[{"name":"Department of Biological Sciences, University of Bergen, High Technology Centre, 5020 Bergen, Norway"}]}],"member":"1968","published-online":{"date-parts":[[2024,10,29]]},"reference":[{"key":"ref_1","unstructured":"Born\u00f8, G., Alarc\u00f3n, M., Linaker, M.L., Colquhoun, D., Nilsen, H., Gu, J., Gjerset, B., Hansen, H., Thoen, E., and Gulla, S. 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Available online: https:\/\/hdl.handle.net\/10037\/16133."}],"container-title":["Animals"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/2076-2615\/14\/21\/3114\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,10]],"date-time":"2025-10-10T16:23:14Z","timestamp":1760113394000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/2076-2615\/14\/21\/3114"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2024,10,29]]},"references-count":39,"journal-issue":{"issue":"21","published-online":{"date-parts":[[2024,11]]}},"alternative-id":["ani14213114"],"URL":"https:\/\/doi.org\/10.3390\/ani14213114","relation":{},"ISSN":["2076-2615"],"issn-type":[{"type":"electronic","value":"2076-2615"}],"subject":[],"published":{"date-parts":[[2024,10,29]]}}}