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Almost 40 years ago, in the depth of the Pacific Ocean, a song sounded different from one voice. Voice 52 Through the depths in Hertz, those who listen to the solo in the Sibli of the ocean beginners. The frequency was more than a blue whale or uncle’s son, Finnish leaves scientists to think of mystery Whale 52.
Leviathan, it was repeatedly heard from today, but I never saw. Some suspects can be a deformation that changes his voice. Others think that it can simply demonstrate a highly unusual vocalization – a tenor between the baritons. However, the sea biologist Cascadia researchers saucers, another probability: “Single whale” can not be anyone who answers the unique call, but there can be no clue.
Celachodidis, who spends more than 50 years, learning the Cetaceans, can be a dubious whale 52, hybrid: part blue whale.
Such a creature often encounters new breeding squares of hot sea tendencies, called a chimney whale, Mate with their Finnish Relatives. A study of the North Atlantic Blues, which broadcast last year, was found to be Finnish Whale DNA Up to 3.5 percent of genomesa surprising figure taking into account two types Left 8.35 million years ago. 52 whales are really a hybrid, the genetic intermediate between its existence is offered Balaenoptera MusculusAs it is known among Blues scientists and Balaenoptera Physalus It happens even if for decades. Northern Atlantic finds indicate that the findings are accelerated.
CETACEAEL ArtBreeDIng, especially between the two types of pilot whales, especially the combinations, combinations were documented in a large amount to warm these animals in a new area and nearby seas. However, hybridization, grizzlies and polar bears are more closely learned among the surface creatures such as pizzly bears. It is difficult to understand in marine mammals and the genetics, behavior, and the biggest animal of a small animal is meant to live.
“Blue whales are still fighting for centuries for centuries, to restore the historical numbers of some populations with less than 5 percent of the historical numbers,” Calambokidis said. Although the number of approved hybrids is less, sustainable housing may be more likely to be encountered, and the sustainability of populations that fought in violation of genetic diversity.
Before the arrival of genomics 30 years ago, maritime biologists identified hybrids by the study of morphology or physical aspects. If an animal indicated the characteristics of two types – the collapsed skin of a city or a stiff body, for example – A hybrid based on external properties or skeletal measurements can be labeled. Anecdotal evidence can also play a role: Historical whale logs Sometimes blues and penalties sometimes mix each other, although such couples have increased. But in the best of morphology, the first generation of two different types can reveal the offspring.
Analysis of DNA, the offspring, which previously identified the marine biologists, such as Aimee Lang, can identify previously formed interinary. This new detail level complicates the picture: Fugues are more common or are researchers better equipped to find them? After investigating the genetic signatures of whales in the world, we will notify whether the hybridization is deprived of a climate change or a long-lasting, long-lasting chapter.
In any case, some maritime biologists see that phenomenon is concerned, because the faces are basically capable of reproducing. Although some women are fertile, men tend to be sterile. These hybrids represent a small part of the world’s blue whales – no more than 25,000 – but the loop population of two types will increase. The world is four times as a blue color and found the evaluation of water around Iceland 37,000 falsi 3000 blues.
“Three thousand animals are not very high levels,” said Lang, who investigated the genetics of marine mammal in the national ocean and atmospheric administration. “So if a woman can’t find a wave of blue and can find a whale blue, but it can’t find Finn whales anywhere, he will choose one of them.”
This has a deep impact for protection. If hybrids cannot be easily identified, it may cause it Inaccurate assessments The blue whale has difficulty assessing the effectiveness of the population and conservation programs. They can’t help the more disturbing, sterile animals alive. Simply put a threat to the long-term vitality of sheep and hybridization.
“If it is enough, hybrid genomes can end the real blue whale genomes in the end,” Lang said. “This is the generation of any generations, which are not adapted to the environment in the environment in the environment, and the generation of any generation of generation is the dead end.”
This can lead to results for all ecosystems. Every whale plays a certain role in the health of the sea ecosystem, “Managing the role-making role in providing the role-making.” These individuals and their generations do not fill in the ecological niche of both parents. “
All this adds to uncertainty that works with an already ongoing rise. Many sea ecosystems The regime lives in turn – Often, sharp and often irreversible changes in the structure and function – warm-up waters are controlled by changing acid and predatory predators. These changes push some Cetacean types into small, more isolated livestock pools.
There is a reason for anxiety outside the blue whales. Rampant is a whale population of the south-west of the Pacific Northwest, which is genetically distinctive and critically dangerously endangered reduce their life to halfBy the risk of reducing malicious genetic, weakened immunity systems, productivity and higher calf death. South resident Tahlequah, a South resident Orca, known for 17 days in 2018 for 17 days. lost another in January. 370 or so northern Atlantic right whales that are still left face similar problems.
Cetacean Caterbreeding and some levels of hybridization may be inevitable as they adapt to climate change. Some may be useful. The real concern is whether these changes are the ability to survive the most whales. Chimney whales may be anomaly, but their presence is a wider, anthropogenic symptom.
“Although their low genetic diversity, there are examples of populations that do good deeds, and they also have examples that they do not work well,” he said, “said the population in the center Coastalism Provincetown, Massachusetts. “They can be in the current situation of everything, but if the conditions are more, it can be flooded.”
“The effect can be what we call a buttleneck,” he said. “Full loss of genetic diversity.”
These changes are often open to people to quickly perceive quickly. Unlike fast life cycles and pure population booms or accidents, in contrast to the fish, which are in decades or accidents, live with generations that hide trends immediately. There are only 30 whales generations since we have diminished in length. To really understand how these pressures form the whale population, the researchers can say about the bottom of the waves and what if it is about 52.
This post appeared first Gristor horse https://grist.org/oseans/lone-thorlds-lldlds-loneiest-whale-may-be-telling-us-Agout-clim-change/. Grist is a non-profit media organization dedicated to explaining a climate solution and a fair future stories. Learn more Grist.org.
