Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Abstract

Induction of ovulation in Arctic char held under unchanging temperature and photoperiod.

Abstract

Sexually mature, 4-yr-old ♀ Arctic charr (Salvelinus alpinus) were injected intraperitoneally with Uvaprim (0.1 ml/kg body weight, containing 2 µg salmon GnRH analogue + 1 mg domperidone); a 2nd injection (0.4 ml/kg) was given 3 days later. Control fish were injected with saline or were not injected. Ovulation frequency in treated fish (87.8%) was higher (P<0.001) than in controls (24.5%). 86.1% of treated fish that ovulated did so within a 5-day period (7-11 days after treatment). Fertilization rates were similar (>90%) for ova collected from treated and control fish.