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An endangered Pacific Northwest killer whale that made global headlines in 2018 by carrying a dead calf for more than two weeks is doing it again after the death of a new calf. , researchers said, a new expression of grief for lost offspring.
The mother orca, known as “Tahlequah” or “J35,” has been seen carrying the remains of a dead female calf since Wednesday, the Washington state-based Whale Research Center said in a Facebook post. He said there was.
“The entire team at the Whale Research Center is deeply saddened by this news and will continue to provide updates as best we can,” the post said.
In 2018, researchers observed J35 pushing a dead calf for 17 days and sustaining it over 1,000 miles (1,600 kilometers). The calf died shortly after birth, and a pod of mother whales and their calves were seen taking turns carrying the carcass.
The research center announced about two weeks ago that it had learned of the new calf. However, on Christmas Eve, the company said it was concerned about the calf’s health due to the behavior of the calf and its mother.
By New Year’s Day, National Oceanic and Atmospheric Administration officials were able to confirm that the J35 was carrying a dead calf, said Brad Hanson, a research scientist at the federal agency.
Mr Hanson, who was able to observe her behavior from his boat on Wednesday, said J35 had a dead calf draped over her nose and head, and when it sank out of the water she dove to retrieve it. He said it looked like it. He said the calf only lived for “a few days”.
“I think it’s fair to say she’s sad, or sad,” Joe Gaydos, director of SeaDoc science at the University of California, Davis, said of J35. Similar behavior is seen in other socially cohesive animals with relatively long lifespans, such as primates and dolphins, he added.
Calf mortality is high, with only one in five orca pregnancies resulting in a calf that survives to its first birthday, according to the Center for Whale Research. Michael Weiss, the center’s director of research, estimates that only 50 percent of killer whale calves survive their first year.
The center described the death of J35’s calf as particularly tragic. That’s not only because J35 may have finally given birth and grown large enough to revitalize the struggling population, but also because J35 now has two of the four recorded calves. Because you are losing it.
Three pods of fish-eating killer whales that frequent waters between Washington state and British Columbia, the southern orca population has been struggling for decades, with only a few remaining. There are only 73 individuals. They must contend with a lack of Chinook salmon, their preferred prey, as well as pollution and boat noise that impede hunting. Researchers warn they are on the verge of extinction.
Weiss said other southern orcas have been observed carrying dead calves, “but not for as long as J35 was carrying a calf in 2018. That’s for sure.”
But there was some good news for the J-Pod. Another new calf, J62, was observed alive by officials and scientists.
Southern killer whales are endangered and differ from other killer whales because they eat salmon rather than marine mammals. Individual whales are identified by unique markings and variations in the shape of their fins, and each whale is given a number and name.
Orcas, which live together in matrilineal groups, can sometimes be seen encroaching around Puget Sound with the downtown Seattle skyline in the background.
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