Population of male humpback whales undergoes a "cultural revolution" some years when they change their song song, research has shown.…
Population of male humpback whales undergoes a “cultural revolution” some years when they change their song song, research has shown.
A survey of rolling singing patterns that span 13 years has shown that signature songs from individual groups develop gradually
But in a few years, a people’s song is completely replaced in an event described as a “cultural revolution”.
When the revolutions occur, the new song is always easier than the one preceding it. 19659005] Population of male humpback whales undergoes a “cultural revolution” some years when they change their vocal vocals, research has shown. “Title =” Population of male humpbacks undergoes a cultural = “” revolution = “” every = “” == “” “==” “” == “” “==” “” = “” “height =” 41
Population of male humpbacks undergoes a” cultural revolution “some years when they change their song killings, research has shown.
Humpback valves are known to have “dialects” unique to different populations. In addition, groups of male whales have own “anthems”, where every member of the population sings the same sequence of the same sound.
The new research, focusing on 95 humpback whistleblowers from East Australia, found Evidence to gradually change the song due to the embellishments introduced by individuals who are then taught by the rest of the group.
Songs introduced by revolutions can be easier because the singers find it difficult to learn brand new material, researchers say. 19659002] Researcher Dr. Jenny Allen, of the University of Queensland, Australia, said: “We investigated two actions of singing structure, complexity and entropy (a tendency to be more disordered) in the Australian population for 13 consecutive years. ” The complexity increased as songs evolved over time but decreased when revolutions occurred.
“No correlation between complexity and entropy estimates suggests that changes in complexity can represent the embellishment of the song that could allow men to stand out of intergenerational consistency.”
“The consistent decrease in complexity during song revolutionaries suggests a potential limit for it social learning ability of new material in humpback whales. “
Research, which also involved British researchers at St Andrews University, is reported in the journal Royal Society Proceedings B.