Food and Feeding Habits Summary - Balaenoptera borealis

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Food and Feeding Habits Summary Balaenoptera borealis

Main Ref.	Tamura, T., K. Konishi, T. Isoda, R. Okamoto and T. Bando, 2009
Fish stage	juv./adults	Mean length	none
Sample size		Percent empty
Country		Locality	northwest Pacific
Period	January February March April May June July August September October November December Highlighted items on the list are known Feeding Periods of Balaenoptera borealis

Diet percent	Food I	Food II	Food III	Prey stage	Item Name	Comments
13.15 %	zoobenthos	benth. crust.	benth. copepods	juv./adults	Copepoda	Neocalanus cristatus, Neocalanus plumchrus, Calanus sp..
0.11 %	nekton	finfish	bony fish	juv./adults	Sardinops sagax
1.46 %	nekton	finfish	bony fish	juv./adults	Cololabis saira
6.88 %	nekton	finfish	bony fish	juv./adults	mackerel	Scomber japonicus, Scomber australasicus.
56.74 %	nekton	finfish	bony fish	juv./adults	Engraulis japonicus	31.19% small anchovy, 25.55% large anchovy.
21.60 %	zooplankton	plank. crust.	euphausiids	juv./adults	Euphausiacea	Euphausia japonica, Euphausia similis, Thysanoessa gregaria.
0.07 %	nekton	cephalopods	squids/cuttlefish	juv./adults	Todarodes pacificus