Endangered predators and endangered prey: Seasonal diet of Southern Resident killer whales
نویسندگان
چکیده
منابع مشابه
Diet Studies of “southern Resident” Killer Whales: Prey Sampling and Behavioral Cues of Predation
Baird & Hanson – prey sampling and behavioral cues of predation Summary In an effort to better understand the diet of so-called " southern resident " killer whales, we collected prey remains from feeding whales and recorded information on behavioral cues of predation around the San Juan Islands in August and September 2004. During the seven days of effort, killer whales were encountered on eigh...
متن کاملPopulation growth is limited by nutritional impacts on pregnancy success in endangered Southern Resident killer whales (Orcinus orca)
The Southern Resident killer whale population (Orcinus orca) was listed as endangered in 2005 and shows little sign of recovery. These fish eating whales feed primarily on endangered Chinook salmon. Population growth is constrained by low offspring production for the number of reproductive females in the population. Lack of prey, increased toxins and vessel disturbance have been listed as poten...
متن کاملEnergy content of Pacific salmon as prey of northern and southern resident killer whales
Recovery of depleted species is difficult, but it can be especially complex when the target species interacts strongly with other depleted species. Such is the case for northern and southern resident killer whales Orcinus orca which are listed as ‘endangered’ under the US Endangered Species Act (ESA) and Canada’s Species at Risk Act. These resident killer whales prey heavily on Pacific salmon O...
متن کاملPopulation Trends of Southern Resident Killer Whales from 1960-1999
In the mid 1960’s, prior to live-capture collections for oceanariums, it is believed that about 100 individuals comprised the Southern Resident community of killer whales. A decline in population levels occurred as a result of collections for public display through the early 1970’s (Hoyt 1990), decreasing the number of whales to about 70 individuals. Beginning in 1974, the Southern Resident com...
متن کاملSaving endangered whales at no cost
The North Atlantic right whale is one of the most critically endangered marine species. Drastic overexploitation has driven this large, slow-swimming baleen whale to virtual extinction in Europe, while a small remnant population of ~350 individuals remains on the US and Canadian east coast. Although this species has been protected for 70 years, recovery has been slight and extinction is still l...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: PLOS ONE
سال: 2021
ISSN: 1932-6203
DOI: 10.1371/journal.pone.0247031