Killer Whale (Orcinus orca) Predation on Beaked Whales (Mesoplodon spp.) in the Bremer Sub-Basin, Western Australia

نویسندگان

  • Rebecca Wellard
  • Keith Lightbody
  • Leila Fouda
  • Michelle Blewitt
  • David Riggs
  • Christine Erbe
چکیده

Observations of killer whales (Orcinus orca) feeding on the remains of beaked whales have been previously documented; however, to date, there has been no published account of killer whales actively preying upon beaked whales. This article describes the first field observations of killer whales interacting with, hunting and preying upon beaked whales (Mesoplodon spp.) on four separate occasions during 2014, 2015 and 2016 in the Bremer Sub-Basin, off the south coast of Western Australia.

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

A Review of Marine Mammal Deterrents and Their Possible Applications to Limit Killer Whale ( Orcinus orca) Predation on Steller Sea Lions (Eumetopias jubatus)

This report does not constitute a publication and is for information only. All data herein are to be considered provisional. Abstract The population of Steller sea lions (Eumetopias jubatus) in the western Aleutian Islands has declined significantly and is currently listed as an endangered species. Among the possible limiting factors for this population is predation by transient killer whales (...

متن کامل

Vocalisations of Killer Whales (Orcinus orca) in the Bremer Canyon, Western Australia

To date, there has been no dedicated study in Australian waters on the acoustics of killer whales. Hence no information has been published on the sounds produced by killer whales from this region. Here we present the first acoustical analysis of recordings collected off the Western Australian coast. Underwater sounds produced by Australian killer whales were recorded during the months of Februa...

متن کامل

Diel Variation in Beaked Whale Diving Behavior

We investigate diel variation in beaked whale diving behavior using data from timedepth recorders deployed on six Blainville’s (Mesoplodon densirostris) beaked whales (126 hours day; 129 hours night) and two Cuvier’s (Ziphius cavirostris) beaked whales (19 hours day; 15 hours night). Deep foraging dives (>800 m) occurred at similar rates during the day and night for Blainville’s beaked whales (...

متن کامل

MESOPLODON BEAKED WHALES (Mesoplodon spp.): Western North Atlantic Stock

STOCK DEFINITION AND GEOGRAPHIC RANGE Within the genus Mesoplodon, there are four species of beaked whales that reside in the northwest Atlantic. These include True's beaked whale, Mesoplodon mirus; Gervais' beaked whale, M. europaeus; Blainville's beaked whale, M. densirostris; and Sowerby's beaked whale, M. bidens (Mead 1989). These species are difficult to identify to the species level at se...

متن کامل

Prey items and predation behavior of killer whales (Orcinus orca) in Nunavut, Canada based on Inuit hunter interviews

BACKGROUND Killer whales (Orcinus orca) are the most widely distributed cetacean, occurring in all oceans worldwide, and within ocean regions different ecotypes are defined based on prey preferences. Prey items are largely unknown in the eastern Canadian Arctic and therefore we conducted a survey of Inuit Traditional Ecological Knowledge (TEK) to provide information on the feeding ecology of ki...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

عنوان ژورنال:

دوره 11  شماره 

صفحات  -

تاریخ انتشار 2016