First record of direct interaction between a potential predator -Orcinus orca (Odontoceti, Delphinidae)- and a mother-calf pair ofEubalaena australis (Mysticeti,Balaenidae) in Brazilian calving grounds

[摘要] In August 2019, the first record of a direct interaction of Southern right whale andkiller whale was observed in the right whale wintering area in southern Brazil. Throughout theinteraction，behavior was recorded and the respiratory rate of the female right whale wasestimates at 0.75 blows per minute.

[学科分类] 天文学(综合)

[关键词] Interspecific interaction;Killer whale;Predation;Southern right whales