Publications by authors named "Jindriska Knowles"
Pikeperch (Sander lucioperca) is a highly profitable commercial species whose economic value has greatly increased in the last decade. As in other species, the quality of spermatozoa in this species is a principal feature inherent in fertilization success and efficient natural and artificial reproduction. The capacity of fish spermatozoa to be activated and tolerate environmental changes (in osmolality, ion composition, external pH, temperature, etc.
View Article and Find Full Text PDFArticle Synopsis
- Pikeperch is seen as a viable option for enhancing aquaculture due to its fish-eating habits, and this study explored the use of a sustained-release system for hormone delivery to improve its reproduction.
- The research involved four groups of fish that received different treatments, with the PLGA 5 group achieving a 100% ovulation rate, significantly higher than other groups.
- Hormonal levels showed varied responses across groups, with the PLGA microparticles leading to better ovulation induction and potential for increased pikeperch production in controlled environments.
Carp pituitary treatment versus poly (lactiac-co-glycolic acid) microparticles with slow release of Alarelin at 35 µg kg or 200 µg kg body weight to induce spermiation was compared in sterlet . All hormone treatments initially increased testosterone and 11-ketotestosterone, with a subsequent decline in testosterone but consistent high levels of 11-ketotestosterone at 48 and 72 h post-treatment. Spermiation did not differ between hormone-treated groups, and was not detected in controls receiving saline solution.
View Article and Find Full Text PDF