Blar i NTNU Open på forfatter "Tomkiewicz, Jonna"
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Differential expression of gonadotropin and estrogen receptors and oocyte cytology during follicular maturation associated with egg viability in European eel (Anguilla anguilla)
da Silva, Filipa F.G.; Tveiten, Helge; Maugars, Gersende Marie Aimee; Lafont, Anne-Gaëlle; Dufour, Sylvie; Støttrup, Josianne G.; Kjørsvik, Elin; Tomkiewicz, Jonna (Journal article; Peer reviewed, 2018)In captivity, oogenesis and ovarian follicle maturation in European eel can be induced experimentally using hormonal therapy. The follicle's ability to respond effectively to the induction of maturation and ovulation, ... -
Exploring bacterial community composition and immune gene expression of European eel larvae (Anguilla anguilla) in relation to first-feeding diets
Bandara, Kasun Anuruddha; Benini, Elisa; Politis, Sebastian N.; Conceição, Luis E.C.; Santos, André; Sørensen, Sune Riis; Tomkiewicz, Jonna; Vadstein, Olav (Peer reviewed; Journal article, 2023)European eel (Anguilla anguilla) is a commercially important species for fisheries and aquaculture in Europe and the attempt to close the lifecycle in captivity is still at pioneering stage. The first feeding stage of this ... -
Morphological development of wild leptocephalus larvae of the European eel (Anguilla anguilla) - With special emphasis on muscle and digestive system
Knutsen, Helene Rønquist (Master thesis, 2015)The larval stage of the European eel (Anguilla anguilla) is largely undescribed. Increased knowledge about the ontogeny of the eel is be of interest both in an ecological perspective, but also in relation to a conservation, ... -
Oocyte and egg quality indicators in European eel: lipid droplet coalescence and fatty acid composition.
da Silva, Filipa F.G.; Jacobsen, Charlotte; Kjørsvik, Elin; Støttrup, Josianne G.; Tomkiewicz, Jonna (Journal article; Peer reviewed, 2018)During European eel assisted reproduction, timely administration of hormones that induce oocyte maturation and ovulation is a major factor influencing subsequent egg quality. This treatment commonly comprises one injection ... -
Ultrasonic imaging as a means of monitoring gonadal development in lumpfish (Cyclopterus lumpus)
Mlingi, Frank Thomas; Puvanendran, Velmurugu; Burgerhout, Erik; Tveiten, Helge; Tomkiewicz, Jonna; Kjørsvik, Elin; Mommens, Maren (Peer reviewed; Journal article, 2023)The 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, ...