1 23 Polar Biology ISSN 0722-4060 Polar Biol DOI 10.1007/s00300-013-1424-3 Decrease in stomach contents in the Antarctic minke whale (Balaenoptera bonaerensis) in the Southern Ocean Kenji Konishi, Takashi Hakamada, Hiroshi Kiwada, Toshihide Kitakado & Lars Walløe