Their mother is Russian sturgeon – a large carnivore with a cream-colored belly, short, round snout, and dragon-like green scales. Their fathers were American paddlefish – catfish-eating fish with long, sensitive snouts. “Sturddlefish”, these hybrids got their nickname after researchers in Hungary announced their creation last month, far exceeding classic hybrids such as la and liger, whose parents sit close together. on the tree of life. Sturddlefish is the result of a union of different taxonomic families.
Men are like fish they always get in trouble when they open their mouth shirt, hoodie, tank top, sweater
“I’m still confused. My jaw is still on the floor,” said Prosanta Chakrabarty, a hydrologist at Louisiana State University and fish curator at the Museum of Natural Science. maybe they raised a cow and a giraffe. ”Then he quickly corrected himself, as the lineages of those two ruminants split apart only a few tens of millions of years ago. Paddle and sturgeon were different 184 million years ago. For these fish to breed like “if a man escaped from a platypus egg,” he said.
Hybrids are often seen as violating the bizarre life of rules that keep species different. But scientific interest in them has increased with a lot of evidence that, in nature, hybrids can play an important role in the emergence of new species and in the conservation of existing species. on the brink of extinction.
Successful breeding of these sturgeon and paddlefish was accidental, but it was not by accident. In fact, researchers are looking to the failure of the cross to learn something about the sex determination of Russian sturgeon.
In mammals and birds, sex between males and females is usually determined by sex-specific genes on the sex-specific chromosome. But with fish, whatever happens: Some fish have sex chromosomes, while others receive signs of sexual development from their environment or transition from gender to sex. other. No one is sure how sturgeon does it, but some want to know because the caviar is as prized as caviar (some premium caviar is priced at over $ 180 an ounce. ). If researchers can find a way to keep Russian sturgeon flocks of mostly female fish, that could alleviate the problem of overfishing of wild populations.
Responsibility for the lake lies in the hands of private owners (who own 2 / 3s) and the Isle of Wight Council (as part of their land around Dinosaur Isle).
Several proposals have been debated on the Sandown Hub Facebook Group, such as moving the fish to a nearby river, asking the fire service to fill the lake, adding sandbags, and creating a smaller area with water. Deeper for fish.
Matthew explained that he moved the Men are like fish they always get in trouble when they open their mouth shirt two fish to a lake about 30 meters deep and was monitoring their health before considering moving the other fish out of the lake. He said Cllr Andre’s meeting to discuss long-term strategy would be too late.