A photographic documentation of the development of Antarctic krill (Euphausia superba) from egg to early juvenile

Antarctic krill (Euphausia superba) is a key species in Antarctic marine ecosystems, as well as an important species in the Southern Ocean fishery. Here, we provide the first detailed photographic documentation of embryonic and larval development of Antarctic krill over a 5-month developmental period under controlled laboratory conditions. Developing embryos and larvae were photographed every 3 h and every 5 days, respectively. Our results indicated a developmental time of approximately 6 days for embryos and 138 days for larvae (0.5 Celsius degree). This study provided baseline biometry information for future investigations of Antarctic krill development under changing environmental conditions.