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dc.contributor.authorMlingi, Frank Thomas
dc.contributor.authorPuvanendran, Velmurugu
dc.contributor.authorBurgerhout, Erik
dc.contributor.authorTveiten, Helge
dc.contributor.authorTomkiewicz, Jonna
dc.contributor.authorKjørsvik, Elin
dc.contributor.authorMommens, Maren
dc.date.accessioned2023-09-28T07:04:07Z
dc.date.available2023-09-28T07:04:07Z
dc.date.issued2023-09-21
dc.description.abstractThe commercial farming of juvenile lumpfish requires monitoring of gonadal development to achieve synchronized production. Conventional methods such as gonadosomatic index (GSI), sex hormone analyses, gonadal histology, endoscopy, and gene expression analyses are costly, invasive, and often involve sacrificing the fish. We assessed the efficiency of ultrasound as a non-invasive method for monitoring gonadal development in lumpfish. Based on ultrasound observations, we categorized the fish into six stages; F0 to F5 for females and M0 to M5 for males, that represented maturity levels from immature to spent. Importantly, the ultrasound gonadal stages aligned with histological gonadal stages. Additionally, ultrasound stages aligned with profiles of GSI, testosterone (T), 11-ketotestosterone, and 17β-estradiol throughout gonadal development including the spawning period. Moreover, these parameters exhibited significant positive correlations with each other reflecting their parallel trends during gonadal development. To minimize the frequency of ultrasound usage and fish handling, we established F3 and M3/M4 as arbitrary thresholds for identifying ripe females and males, respectively. By using these thresholds, the need for regular ultrasound monitoring could be reduced during most of the rearing period. Ultrasound proves to be useful and reliable for monitoring gonadal development in lumpfish, enabling synchronized production of juvenile fish.en_US
dc.identifier.citationMlingi FT, Puvanendran V, Burgerhout E, Tveiten H, Tomkiewicz J, Kjørsvik E, Mommens M. Ultrasonic imaging as a means of monitoring gonadal development in lumpfish (Cyclopterus lumpus). Physiological Reports. 2023;11(18)en_US
dc.identifier.cristinIDFRIDAID 2179469
dc.identifier.doihttps://doi.org/10.14814/phy2.15811
dc.identifier.issn2051-817X
dc.identifier.urihttps://hdl.handle.net/10037/31259
dc.language.isoengen_US
dc.publisherWileyen_US
dc.relation.journalPhysiological Reports
dc.rights.accessRightsopenAccessen_US
dc.rights.holderCopyright 2023 The Author(s)en_US
dc.rights.urihttps://creativecommons.org/licenses/by/4.0en_US
dc.rightsAttribution 4.0 International (CC BY 4.0)en_US
dc.titleUltrasonic imaging as a means of monitoring gonadal development in lumpfish (Cyclopterus lumpus)en_US
dc.type.versionpublishedVersionen_US
dc.typeJournal articleen_US
dc.typeTidsskriftartikkelen_US
dc.typePeer revieweden_US


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Attribution 4.0 International (CC BY 4.0)
Med mindre det står noe annet, er denne innførselens lisens beskrevet som Attribution 4.0 International (CC BY 4.0)