Grandmother
| Use attributes for filter ! | |
| Initial release | Philippines |
|---|---|
| Directors | Brillante Mendoza |
| Screenplay | Linda Casimiro |
| Initial DVD release | Italy |
| Composers | Teresa Barrozo |
| Date of Reg. | |
| Date of Upd. | |
| ID | 1965808 |
About Grandmother
Grandmother, also known as Lola, is a 2009 French-Filipino independent drama film directed by Brillante Mendoza. It was entered into the main competition at the 66th edition of the Venice Film Festival.
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Grandmother killer whales boost survival of calves
The impact on survival rates was even greater if The Grandmothers were post-menopause
Grandmother killer whales boost the survival rates of their grandchildren, a new study has said.
The survival rates were Even Higher if The Grandmother had Already Gone through the menopause.
The findings shed valuable light on The Mystery of the menopause, or why females of some species live Long After they lose the ability to reproduce.
Only five known animals experience it: killer whales, short-finned pilot whales, belugas, narwhals and Humans .
With Humans , there is some evidence that human grandmothers aid in the survival of their children and grandchildren, a hypothesis called the "Grandmother effect".
These findings suggest the same effect occurs in orcas.
"If a Grandmother dies, in The Years following her death, her grand-offspring are much more likely to die," said lead author Dan Franks from the University of York.
He said the effect was even greater when a post-reproductive Grandmother died.
"It can explain the benefits of females living a long time after reproduction," he said. "From an evolutionary standpoint, they can still pass on their genes and genetic legacy by helping their grand-offspring. "
In other words, by not continuing to reproduce, The Grandmother whales might actually be doing more to ensure their genes get passed on than if they were reproducing.
Grandmother killer whales usually lead The Group when foraging for foodThe researchers analysed 36 years of photographic census data on two populations of killer whales off the North Pacific coast of Canada and the United States . Each population was made up of multiple pods with various family groups.
The study was.
Leading the packWhen explaining why grandmothers might have such an impact on calf survival rates, Mr Franks said past research has shown the important leadership role that Grandmother killer whales play.
They tend to be at The Front of The Group when searching for food, relying on their vast ecological knowledge. He said by being unable to reproduce, "they may be in a better position to lead The Group ".
He noted the impact of grandmothers on their grand-offspring was especially strong in times of need, such as a shortage of salmon.
Older female orcas have even been observed directly feeding fish to their children and grandchildren.
Researchers will use drone footage to further understand whale interactions and behaviourThe researchers also suspect grandmothers are filling a role that's familiar to Humans - babysitting.
"When A Mother dives to catch fish, The Grandmother can stay with grand-offspring," Mr Franks said.
He said moving forward researchers will capture drone footage to observe orca behaviour and better understand interactions between different Family Members .
Lack of competitionAnother reason the menopause might make grandmothers more helpful to their family's survival is decreasing competition.
If grandmothers and their daughters were having children at the same time, those children would be competing for resources, including their Grandmother 's attention.
Mr Franks said this could explain why The Grandmothers don't continue to reproduce throughout their lives and also help look after their grand-offspring.
evolution, menopause, conservation
Source of news: bbc.com
Grandmother Photos
