Killer Whales (Orcinus orca) Chasing Gray Whales (Eschrichtius robustus) in the Northern Bering Sea

ARCTIC ◽  
1983 ◽  
Vol 36 (4) ◽  
Author(s):  
Donald K. Ljungblad ◽  
Sue E. Moore
Keyword(s):  
Bering Sea ◽  
Orcinus Orca ◽  
Eschrichtius Robustus ◽  
Killer Whales ◽  
Gray Whales ◽  
Northern Bering Sea

Attack on gray whales (Eschrichtius robustus) in Monterey Bay, California, by killer whales (Orcinus orca) previously identified in Glacier Bay, Alaska

1994 ◽  
Vol 72 (8) ◽  
pp. 1528-1530 ◽  
Author(s):  
P. Dawn Goley ◽  
Janice M. Straley
Keyword(s):  
Small Groups ◽  
Orcinus Orca ◽  
Monterey Bay ◽  
Eschrichtius Robustus ◽  
Killer Whales ◽  
Range Of Movement ◽  
Gray Whales ◽  
Glacier Bay ◽  
Linear Distance ◽  
Maximum Range

A group of at least 17 killer whales (Orcinus orca) were observed attacking a gray whale (Eschrichtius robustus) mother and calf on 2 May 1992 in Monterey Bay, California, U.S.A. (36°47.90′N, 122°00.17′W). Small groups of killer whales took turns harassing the gray whales and prevented them from leaving the area. Three of the killer whales participating in this attack previously had been photographed on 6 August 1989 in Glacier Bay, Alaska, U.S.A. (58°41′N, 136°04′W). This linear distance nearly doubles the maximum range of movement previously reported for killer whales.

Gray whale feeding on dense ampeliscid amphipod communities near Bamfield, British Columbia

1984 ◽  
Vol 62 (1) ◽  
pp. 41-49 ◽  
Author(s):  
John S. Oliver ◽  
Peter N. Slattery ◽  
Mark A. Silberstein ◽  
Edmund F. O'Connor
Keyword(s):  
Bering Sea ◽  
Benthic Communities ◽  
Gray Whale ◽  
Gray Whales ◽  
Northern Bering Sea ◽  
Amphipod Crustacean ◽  
Different Parts ◽  
Feeding Grounds ◽  
Made In ◽  
The Bering Sea

Gray whales fed on dense populations of ampeliscid amphipods while summering along the west coast of Vancouver Island. These amphipod crustacean communities are ecological analogs of the primary feeding grounds of gray whales in the northern Bering Sea. The same major genera of amphipods dominated the Alaskan and Canadian feeding grounds, including Ampelisca, Photis, Protomedeia, Anonyx, and Orchomene, and comprised 67 to 90% of the number of infaunal crustaceans at the two locations. This is the first documented report of gray whale feeding on benthic infauna south of the Bering Sea. Feeding gray whales observed in Pachena Bay produced an extensive record of feeding excavations in bottom sediments. Excavation patterns suggest that: (i) whales used suction to extract infaunal prey and sediments; (ii) a maximum of six excavations was made in one feeding dive; (iii) excavation size was related to whale size; (iv) small and large whales fed in different parts of the bay; and (v) whales effectively located and worked the densest patches of benthic prey. We estimate that a 6-m whale consumed 116 kg of infaunal prey per 12-h day, and that a 12-m whale consumed 552 kg per 12-h day. Scavenging lysianassid amphipods were attracted to feeding disturbances within seconds and preyed on injured and dislodged infauna. Individual feeding excavations were large, deep valleys in a tube-mat plateau. In addition to the lysianassids, many other infauna undoubtedly colonize these highly modified habitats, resulting in important effects on the structure of benthic communities.

Amphipod prey of gray whales in the northern Bering Sea: Comparison of biomass and distribution between the 1980s and 2002–2003

2007 ◽  
Vol 54 (23-26) ◽  
pp. 2906-2918 ◽  
Author(s):  
Kenneth O. Coyle ◽  
Bodil Bluhm ◽  
Brenda Konar ◽  
Arny Blanchard ◽  
Raymond C. Highsmith
Keyword(s):  
Bering Sea ◽  
Gray Whales ◽  
Northern Bering Sea

Personality in captive killer whales (Orcinus orca): A rating approach based on the five-factor model.

2019 ◽  
Vol 133 (2) ◽  
pp. 252-261 ◽  
Author(s):  
Yulán Úbeda ◽  
Sara Ortín ◽  
Judy St. Leger ◽  
Miquel Llorente ◽  
Javier Almunia
Keyword(s):  
Factor Model ◽  
Five Factor Model ◽  
Orcinus Orca ◽  
Killer Whales
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