Influence of rearing temperature and hormone treatment on sperm motility in burbot (Lota lota)

The burbot (Lota lota) has potential for freshwater aquaculture production. Burbot is a gadoid fish with a preference for cold temperatures and may therefore be suitable for species diversification. Still, the rearing conditions for reproduction and ongrowing are poorly understood. Burbot reproduce during the winter, require constant cold temperatures for spawning (McPhail and Paragamian, 2000) and undergo dramatic metabolic changes during this season in order to respond to energetic demands for reproduction (Mustonen et al. 2002). Knowledge of these processes is hence a necessary prerequisite to successfully establish Burbot in aquaculture. In other temperate species like pikeperch (Sander lucioperca), it was shown that temperature has a significant impact on the hormones involved in reproduction and spawning (Hermelink et al. 2011). These sensitive interactions may be strongly disturbed by environmental conditions and stress. There is a current lack of understanding with regards to how/if such a disturbance may affect the sperm performance and subsequent fertilization success. This study focuses on the effect of hormone treatment with Buserilin, as well as the impact of rearing temperature on the activation success of Burbot sperm.

Jaar van publicatie:2013

Toegankelijkheid:Closed