DEPENDENCE OF KILLER WHALE (ORCINUS ORCA) ACOUSTIC SIGNALS ON THE TYPE OF ACTIVITY AND SOCIAL CONTEXT

作者：Filatova O A^*; Guzeevz M A; Fedutin I D; Burdin A M; Hoyt Erich

来源：Zoologicheskii Zhurnal, 2013, 92(5): 612-618.

DOI：10.7868/S0044513413030094

• killer whale
• Orcinus orca
• behaviour
• acoustic communication

The influence of the activity type and social context on the proportion of four structural categories of stereotype calls in the acoustic communication of Kamchatka killer whales was investigated. Using the generalind linear models, the dependence of each sound category on the type of activity, the number of killer whale pods, and the presence of mixed-pod groups was described. The proportion of different sound categories was found to depend on the number of pods and the presence of mixed-pod groups, while the type of activity did not affect the proportion of sounds of different categories. The observed differences allowed suggesting that biphonic and high-frequency monophonic calls were mainly used as family and pod markers and helped to track the position of the family members at long ranges. Low-frequency monophonic calls are used as close-range intragroup signals to maintain contact between the pod members in the conditions of limited underwater visibility

• 出版日期2013-5