قالب وردپرس درنا توس
Home / Tips and Tricks / The killer whale Tahlequah, who mourned her dead calf for 17 days, gives birth to a child

The killer whale Tahlequah, who mourned her dead calf for 17 days, gives birth to a child



An orca named Tahlequah, who touched the hearts of people around the world in 2018 after carrying her dead calf for 17 days, gave birth to a new baby.

The 21-year-old orca – or “killer whale” – gave birth to a new calf, named “J57” by researchers, on September 4th in the eastern Strait of Juan de Fuca, US waters.

According to the Whale Research Center, Tahlequah and her new calf appear to be healthy as the child “swims vigorously next to its mother”.

Tahlequah gave birth to a calf in 2010 that survives to this day – ‘J47’, also known as ‘Notch’ – but she also miscarried in mid-201

0 before losing the calf shortly after it was born in 2018. Experts feared that she would likely lose this new one too.

An orca named Tahlequah, who touched the hearts of people around the world in 2018 after carrying her dead calf for 17 days, gave birth to a new baby

An orca named Tahlequah, who touched the hearts of people around the world in 2018 after carrying her dead calf for 17 days, gave birth to a new baby

Her pregnancy was first reported by whale watchers in July after experts from the Sealife Response, Rehabilitation and Research Conservation Group found she was larger than usual.

“We hope that the people on the water can give the southerners plenty of space to forage at this important time. With such a small population, every successful birth is hugely important to recovery, ”the non-profit group wrote at the time.

For experts, it was a relief when J57 was born between Washington State and Vancouver Island, which had not yet been given a common name by the research team.

According to the Whale Research Center, Tahlequah and her new calf appear to be healthy as the child

According to the Whale Research Center, Tahlequah and her new calf appear to be healthy as the child “swims vigorously next to its mother”.

The 21-year-old orca, or killer whale, gave birth to her new calf, referred to as

The 21-year-old orca – or “killer whale” – gave birth to a new calf, named “J57” by researchers, on September 4th in the eastern Strait of Juan de Fuca, US waters.

‘Hooray! Their new calf looked healthy and precocious and swam vigorously next to its mother on the second day of free swimming, ”said the researchers.

The center did not disclose the sex of the new calf as the observations were discontinued.

It was said that when Tahlequah was discovered, she was largely separated from the other whales and “very evasive” when she crossed the border into Canada.

“So we ended our meeting with her after a few minutes and wished them all the best on their way,” said the center. “We hope this calf is a success story.”

Researchers cannot say exactly when the calf was born, but they set the date of birth to September 4th because the dorsal fin was erect when they discovered it.

“We know it takes a day or two to straighten up after bending over in the womb, so we’re assigning his birthday to September 4, 2020,” the team explained.

Her pregnancy was first reported by whale watchers in July after experts from the Sealife Response, Rehabilitation and Research Conservation Group found she was larger than usual

Her pregnancy was first reported by whale watchers in July after experts from the Sealife Response, Rehabilitation and Research Conservation Group found she was larger than usual

Tahlequah gained worldwide fame in 2018 when she carried her stillborn calf for 17 days – and over 1,000 miles – across the Salish Sea off Washington state.

What are the main threats to these killer whales?

According to NOAA, the Southern Resident Killer Whales face three main threats:

  • Lack of prey
  • Boat traffic and noise
  • Chemical contamination

Chinook salmon are the most nutritious prey for southern killer whales.

But the salmon population has plummeted in recent years, which is a catastrophe for the whales that rely on them.

Noise and overcrowding from shipping are considered to be one of the greatest threats to their very existence, along with modern pollution and pollution that remains in the water due to chemicals that were banned decades ago

According to NOAA, the main contaminants of concern are: PCBs (contained in plastics, paints, rubber, electrical appliances), DDT (contained in pesticides) and PBDEs (fire retardant chemicals found in mattresses, televisions, toasters, for example)).

It was viewed as a form of mourning in another species, and so its story intrigued the media and the general public, drawing attention to the plight of the Pacific orcas.

Population ecologist John Durban of Southall Environmental Associates and marine mammal expert Holly Fearnbach of SR3 (Sealife Response + Rehab + Research) have conducted long-term studies of the orcas that visit Puget Sound.

Using remote controlled drone monitoring from a height of 30 meters has enabled researchers to assess the whales’ body condition non-invasively.

Unfortunately, the south-resident whales in the Pacific – of which there are only 72 currently – are endangered, which means newborns are vital.

According to experts, a shortage of salmon – and the resulting stress from starvation – is linked to the poor reproductive conditions of the southern whale.

They are also threatened by pollution and underwater noise – the latter interfering with the orca’s sound-based hunting ability.

Researchers are concerned that some of the teens in the three pods look thin – including Tahlequah’s live calf J47.

“There are stressed whales that are critically stressed,” said Dr. Fearnbach told the Seattle Times, adding that the drone study showed that the whales are dispersed in small groups.

This is a sign that they are working hard to find food – and accordingly spend less time socializing.

Both researchers said that when they conducted their field studies this year, they saw significant shipping traffic in the area frequented by the whales – much of it moving far too fast, which also leads to more underwater noise.

The researchers said that when Tahlequah was discovered, she was largely separate from the other whales and

Researchers said when Tahlequah was spotted she was largely separate from the other whales and “very evasive” when she crossed the border into Canada

Called Tahlequah or J35, the 21-year-old orca or killer whale touched hearts all over the world when news of her grieving process spread.  Tahlequah carried her dead calf on her forehead for 17 days before releasing it

Called Tahlequah or J35, the 21-year-old orca – or “killer whale” – touched hearts all over the world when news of their grieving process spread. Tahlequah carried her dead calf on her forehead for 17 days before releasing it

Dr.  Holly Fearnbach and Dr.  John Durban of Southall Environmental Associates (SEA) first took pictures of Tahlequah looking pregnant in July 2020.  She gave birth on September 4th

Dr. Holly Fearnbach and Dr. John Durban of Southall Environmental Associates (SEA) first took pictures of Tahlequah looking pregnant in July 2020. She gave birth on September 4th

“People need to appreciate that these are special whales in a special place at an endangered time,” said Dr. Durban told the Seattle Times, adding that boats should give animals the space and tranquility they need to survive.

He concluded, “These whales deserve a chance.”

Because the whales have had so much nutritional stress in recent years, a large percentage of pregnancies fail and young calf mortality is around 40 percent.

“With this new calf in J pod, which we will refer to as J57, the population is now 73, although the official July 1 figure is estimated at 72,” the team said.

“We have to sort through all the photos to see which whales were still alive yesterday, and it follows that they would have been alive on July 1st.

“The July census is used for consistency compared to the northern killer whale population monitored by DFO Canada.”

WHY SCIENTISTS WHALES AND DOLPHINS TOMORROW

Whales and dolphins have been seen several times “carrying” or caring for their dead young.

These creatures might be in mourning or they might not have accepted or realized that the offspring or companion had died.

Scientists still don’t know if aquatic mammals really recognize death and want to do more research on the subject.

In 2016, scientists found evidence that whales and dolphins are holding vigils for their dead.

They analyzed several cases in which mammals clung to the bodies of dead compatriots and watched over a dead companion.

At the time, they said the most likely explanation was grief.

The study compiled observations from 14 events.

They found that mothers often carried their dead cubs across the water, often flanked by friends.

In many cases, the dead offspring were decomposed, indicating that they had long been held.


Source link