General News
Meropi Kyriacou Honored as TNH Educator of the Year
NEW YORK – Meropi Kyriacou, the new Principal of The Cathedral School in Manhattan, was honored as The National Herald’s Educator of the Year.
WASHINGTON — Those melancholy tunes sung by humpback whales may really be a sign of loneliness.
Scientists who tracked humpback whales in Australia noticed that fewer whales wailed to find mates as their population grew.
“Humpback whale song is loud and travels far in the ocean,” said marine biologist Rebecca Dunlop, who has studied humpback whales that breed near the Great Barrier Reef for more than two decades.
As whale numbers dramatically rebounded following the end of commercial whaling — one of the world’s great conservation success stories — she noticed something unexpected.
“It was getting more difficult to actually find singers,” said Dunlop, who is based at the University of Queensland in Brisbane. “When there were fewer of them, there was a lot of singing — now that there are lots of them, no need to be singing so much.”
Scientists first began to hear and study the elaborate songs of humpback whales in the 1970s, thanks to new underwater microphones. Only male whales sing, and the tunes are thought to play a role in attracting mates and asserting dominance.
Eastern Australia’s humpback whales were facing regional extinction in the 1960s, with only around 200 whales left. But numbers grew and reached 27,000 whales by 2015 — approaching estimated pre-whaling levels.
As the density of whales increased, their courtship changed. While 2 in 10 males were singers in 2004, a decade later that ratio had dropped to just 1 in 10, Dunlop and colleagues report Thursday in the journal Nature Communications Biology.
Dunlop speculates that singing played an outsized role in attracting mates when populations were severely depleted.
“It was hard just to find other whales in the area, because there weren’t many,” she said.
When whales live in denser populations, a male looking for a mate also has to ward off the competition, and singing may tip off other suitors, she explained.
“As animal populations recover, they change their behavior — they have different constraints,” said marine biologist Boris Worm of Canada’s Dalhousie University, who was not involved in the study.
To be sure, the seas are still noisy. Many humpbacks woo with a combination of singing and physical jostling, the Australia researchers report.
“Such a big increase in animals over the time they were studying gave them a unique opportunity to get insights about changes in behavior,” said Simon Ingram, a University of Plymouth marine biologist in England, who not involved in the study.
Ingram said that while humpback whales must have been singers long before whaling depleted their numbers, the new study highlights just how essential their elaborate and beautiful songs were to their survival and recovery.
“Clearly singing became incredibly valuable when their numbers were very low,” he said.
NEW YORK – Meropi Kyriacou, the new Principal of The Cathedral School in Manhattan, was honored as The National Herald’s Educator of the Year.
DEIR AL-BALAH, Gaza Strip (AP) — An Israeli airstrike on a hospital courtyard in the Gaza Strip early Monday killed at least four people and triggered a fire that swept through a tent camp for people displaced by the war, leaving more than two dozen with severe burns, according to Palestinian medics.
MANILA, Philippines (AP) — Disasters, including those wrought by fiercer storms, are threatening more people and could derail economic progress in the Asia Pacific region if governments don't invest more in disaster mitigation and prevention, a U.
ATLANTA (AP) — Tom Brady has another new role in the NFL: owner.
Walgreens is planning to close around 1,200 locations, as the drugstore chain and its rivals struggle to define their role for U.
WASHINGTON, DC – The Hellenic Society of Constantinopolitans of Greater Washington presents a screening of the documentary ‘Megali tou Genous Sxoli’ on Saturday, October 26, 2:30 PM, hosted by the Papadopoulos Family at 9744 The Corral Drive in Potomac, MD.