The social structure of the killer whale is quite complex and stable. They live with their mothers for their entire lives. Their family includes an older female, her sons and daughters, and the descendants of her daughters. With a life expectancy of nearly 90 years for female killer whales, ...
aTim Berners-Lee created the World Wide Wed Tim Berners李创造了世界宽星期三[translate] a准备最坏的计划 ready for the worst;[translate] aThe killer whale has 40 teeth, each ___ 20 cm long. 虎鲸长期有40颗牙,每___ 20 cm。[translate]...
There is no record of an orca/killer whale ever having killed a human, but they have been known to get cross with trainers when held in captivity. Occasionally in the wild, an orca/killer whale may mistake a human for some marine life, such as a seal, but humans are not part of ...
The volume of the false killer whale’s extremities accounted for 1.59% of the UAS-derived body volume estimate. As such, the final UAS-derived volume estimates for PKW2 and PKW3 were increased by 1.59% of the estimated 90% body volume (Fig. 5B). Comparison of the volume recorded during...
Low worldwide genetic diversity in the killer whale (Orcinus orca): implications for demographic history A low level of genetic variation in mammalian populations where the census population size is relatively large has been attributed to various factors, such... A.,Rus,Hoelzel,... - 《...
In the Salish Sea, the endangered Southern Resident Killer Whale (SRKW) is a high trophic indicator of ecosystem health. Three major threats have been identified for this population: reduced prey availability, anthropogenic contaminants, and marine vesse
The harbor porpoise (Phocoena phocoena) is a whale species that is doing quite well in coastal and busy waters. They are found in large numbers throughout the Northern Hemisphere from Mauritania to Alaska, and now researchers from the University of South
Recognition of killer whale individuals from multiple stereotyped call types. Our previous research established the potential to identify killer whale individuals with passive acoustic recordings with up to 78% accuracy. The data for ... N Nichols,L Atlas,A Bowles,... - 《Journal of the Acoustica...
We present the current available knowledge about sexual behavior and mating systems in the killer whale, Orcinus orca, focusing primarily on the most well-studied ecotype, the Residents of the eastern North Pacific. Resident killer whales display lifetime natal philopatry of both sexes and thus for...
cycle, e.g., 2 min on 18 min off, could be expected to capture more than 80% of killer whale acoustic presence compared to the duty cycles used in this study. However, there were differences in the likelihood of detection for different populations. Reducing the duty cycle led to greater...