KILLER WHALE PREDATION ON BELUGAS IN COOK INLET, ALASKA: IMPLICATIONS FOR A DEPLETED POPULATION

@article{Shelden2003KILLERWP,
  title={KILLER WHALE PREDATION ON BELUGAS IN COOK INLET, ALASKA: IMPLICATIONS FOR A DEPLETED POPULATION},
  author={Kim E. W. Shelden and David J. Rugh and Barbara A. Mahoney and Marilyn E. Dahlheim},
  journal={Marine Mammal Science},
  year={2003},
  volume={19},
  pages={529-544}
}
Killer whale predation on belugas in Cook Inlet, Alaska, has become a concern since the decline of these belugas was documented during the 1990s. Accordingly, killer whale sightings were compiled from systematic surveys, observer databases, and anecdotal accounts. Killer whales have been relatively common in lower Cook Inlet (at least 100 sightings from 1975 to 2002), but in the upper Inlet, north of Kalgin Island, sightings were infrequent (18 in 27 yr), especially prior to the 1990s. Beach… 
UNUSUAL MORTALITY IN THE DEPLETED COOK INLET BELUGA (DELPHINAPTERUS LEUCAS) POPULATION
TLDR
Factors that may presently impact the Cook Inlet beluga population include harvest by Alaska Natives, contaminants, boat traffic, killer whale predation, strandings, disease, forage base decline, human-induced habitat changes, and an ocean regime shift.
Whale killers: Prevalence and ecological implications of killer whale predation on humpback whale calves off Western Australia
TLDR
Observations of killer whales preying on neonate humpback whales off Western Australia suggest that humpback calves are a predictable, plentiful, and readily taken prey source for killer whales and scavenging sharks off WA for at least 5 mo/yr.
Range contraction in a beluga whale population
The small, isolated population of beluga whales Delphinapterus leucas in Cook Inlet, Alaska, USA, has had a distinct contraction in range over the past 3 decades. This contraction is a function of a
BELUGA WHALE, Delphinapterus leucas: Cook Inlet Population - Critically Endangered
  • Environmental Science
  • 2006
Population Identity: Based on studies of mitochondrial DNA, Cook Inlet belugas are genetically distinct from the other four beluga populations that occur in western and northern Alaska (O’Corry-Crowe
Causes and consequences of marine mammal population declines in southwest Alaska: a food-web perspective
Populations of sea otters, seals and sea lions have collapsed across much of southwest Alaska over the past several decades. The sea otter decline set off a trophic cascade in which the coastal
Viability of a small, geographically-isolated population of beluga whale, Delphinapterus leucas: effects of hunting, predation, and mortality events in Cook Inlet, Alaska
TLDR
A population viability analysis (PVA) model was developed to evaluate this population of beluga whales in Cook Inlet, Alaska’s risk of extinction and decline over 50 and 100 years, concluding that extinction of the CIBW population would result in a permanent loss of range for the beluga whale species.
Morbidity and mortality in stranded Cook Inlet beluga whales Delphinapterus leucas.
TLDR
Each stranding affords a unique opportunity to obtain natural history data and evidence of human interactions, and, by long-term monitoring, to characterize pathologies of importance to individual and population health.
Potential natural and anthropogenic impediments to the conservation and recovery of cook inlet beluga whales, Delphinapterus leucas
TLDR
Current and potential natural and anthropogenic factors that may play a role in the decline and long-term viability of Cook Inlet beluga whales are presented.
Occurrence of killer whale Orcinus orca rake marks on Eastern Canada-West Greenland bowhead whales Balaena mysticetus
TLDR
Older bowheads, which have had greater exposure time to killer whales due to their age, had higher occurrences of rake marks than juveniles and calves, which may indicate that younger whales do not survive killer whale attacks.
Behavior and distribution of Cook Inlet beluga whales, Delphinapterus leucas, before and during pile driving activity
Five stocks of beluga whales, Delphinapterus leucas, exist in U.S. waters. Cook Inlet beluga whales are genetically distinct and geographically isolated from the other stocks and are listed as
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