Prey selection of early juvenile cod (Gadus morhua L) in the Barents Sea ...

• Main Author: Helle, Kristin
• Format: Conference Object
• Language: unknown
• Published: ASC 2006 - Theme session F 2024
• Subjects: Fisheries and aquaculture; Ecosystem observation, processes and dynamics; Barents Sea; Norway; Calanus finmarchicus; Gadus morhua; Northern Norway
• Online Access: https://dx.doi.org/10.17895/ices.pub.25258696; https://ices-library.figshare.com/articles/conference_contribution/Prey_selection_of_early_juvenile_cod_Gadus_morhua_L_in_the_Barents_Sea/25258696

No abstracts are to be cited without prior reference to the author.From 1977 through 1991 the Institute of Marine Research (IMR) conducted an annual early juvenile survey in June and July along the coast of northern Norway and in the western Barents Sea. The main purpose of these surveys was to generate an index of abundance for the early juvenile fish with particular emphasis on early juvenile cod (here defined as fish 2-3 months old). In 1989, zooplankton samples were also collected at 161 trawl stations during the period 2 to 23 of July. These stomach and zooplankton samples were analyzed both quantitatively and qualitatively and various methods to estimate prey preferences were applied. Based on these analyses, it appears that early juvenile cod select the largest copepodite stages (IV and V) of Calanus finmarchicus. Capelin larvae were also found in the stomachs but no correlation between the abundance of capelin in the sea and in the stomachs was established. ...