When a whale dies and falls on the sea floor, the carcass is a boon for future generations of crabs and bone-eating around and snails, horrific experiments have revealed. The morbid smörgåsbord could tell us much about the evolution of deep sea animals.
By dragging the whale died off the coast ranges, placing them in the depths of the ocean and return year after year, researchers discover whole communities animal develops on whale carcasses.
New research in Monterey Submarine Canyon California involving carcasses submerged five juvenile whales turned more than a dozen new species of worms-eating of bones and bone-eating snails. The work also raised the possibility that these small animals is more effective than previously thought to reduce whale bone dust.
"Original research suggested that bones would be the last 50 to 100 years," said Lonny Lundsten Monterey Bay Aquarium Research Institute. This would mean that the bones of large whales may last long enough to serve as artificial reefs for animals requiring a harder surface on which live as the vase soft ocean floor.
But Lundsten whales and his colleagues studied have almost disappeared in five to seven years, they go in a recent issue of the Deep Sea Research.
"We discovered that is the phase of reef is really there," said Lundsten.
That being said, all whales in Monterey study were juveniles. An adult blue whales have larger bones and finally the longest. "But we always think that even a large blue whale does not last long."
Another surprise, that they have found is that many of the animals living on the carcasses are not experts step - like worms and whalebone eating snails. Instead, they are just normal scavengers who are still skittering on deep sea looking manna from the top.
"We found is that most animals are animal background" submarine canyon, said Lundsten. Right whale fall brings the. "This is really just a big piece of food."
On the other hand, there is a new species and consuming to unique bone, Osedax genus, discovery whale falls in different parts of the world, said Lundsten. These worms are now known to employ a bacterial symbionts to help dissolve the whale bone.
A sort of newly discovered snail has also found eating bones, but it is still studied to know exactly how she manages to digest the mineralized material. These eating bones form a critical case to make whaling community possible fall.
How to snails Osedax manage to locate and occupied distant whale falls remains a mystery, said Craig Smith of the University of Hawaii, who has studied whale off the coast of Southern California falls among others.
"They seem to be finding whale falls very well," Smith said to.
It compares to another unusual face of marine organisms in the same problem: the tube worms and other animals develop in hot water vents in the ocean floors in widely separated locations around the world. As whale falls, these ocean winds are of short duration, which means they much be a way for animals disperse and find new homes for hundreds or even thousands of kilometres.
One thing that could help the Osedax is that they can be snacking on other types of bone between the whale falls said Lundsten. Now, the experiments have shown that the Osedax to same bone cow will eat when they are available.
It may also be a tomb of a larger story whaling and the deep ocean vents, said Smith. Perhaps falls of whales and other deaths of large animals in the history of oceans who have introduced progressively recuperators shallow waters deeper and deeper, until they find ways to adapt to such things as the hot vents.
"It highlights just how connected ocean are ecosystems," said Smith.
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