Types and frequency of malformations and mortality in eggs of Arcto-Norwegian cod: A field study

• Main Authors: Makhotin, Valeri, Solemdal, Per, Korsbrekke, Knut, Salthaug, Are
• Format: Report
• Language: English
• Published: ICES 2001
• Subjects: cod; torsk; marine eggs; marine egg; mortality; dødelighet; VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Resource biology: 921; VDP::Mathematics and natural science: 400::Geosciences: 450::Oceanography: 452; VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Fish health: 923; Lofoten; Norway; Vesterålen; Vestfjord; Northern Norway
• Online Access: http://hdl.handle.net/11250/106161

Embryological studies on living cod eggs in NUNC-trays showed that spontaneous malformations during embryo development are lethal. They are called natural egg mortality in contrast to external lethal factors, as predation, extreme physical conditions and pollution. The natural mortality in cod eggs,...