CANBERRA - The dolphins are the chefs of the seas, having been seen by the accurate and elaborate preparations to remove the ink of cuttlefish bone and soft to produce a meal of squid, Australian scientists say.
A female wild Indo-Pacific bottlenose dolphin was observed that through the same series of complicated steps to prepare for eating cuttlefish dam in the Spencer Gulf in South Australia state.
"It's a sign of how well their brains are developing. It is a pretty clever way to get pure calamares without all the horrible bits, Mark Norman, the curator of mollusks at the Museum of Victoria and a member of the research team, told the Canberra Times newspaper.
The research team, writing in the scientific journal PLoS ONE, said repeatedly observed a dolphin breeding female cuttlefish of algae and weeds in a clear patch of sand from the seabed.
The dolphin, identified by scars circular body, then placed the cuttlefish with its snout, while standing on his head, before killing him instantly with a quick downward thrust and "high click" audible to divers as the hard cuttlebone broke.
The dolphin then lifted his body and hit with your nose to drain toxic black cuttlefish ink jet in the water to defend themselves when attacked.
Then the dam was taken back to the seafloor, where the dolphins were scraped sand along the strip of cuttlebone, making the soft sepia to eat.
Norman and study co-author Tom Tregenza, University of Exeter, said the behavior exhibited between 2003 and 2007 was unlikely to be a rarity.
"In addition to our observations, the bottlenose dolphins feeding in these spawning cuttlefish have been observed by divers in the area to perform the same sequence of behavior," they said in the study.
"The conduct of food here is specifically tailored to a single type of prey is impressive and the flexibility of the behavior of non-primate animal."
A 2005 study provided the first sign dolphins may be able to group learning and use of tools, with a mother to see their daughters to school to break the sea sponges and wear as protection of the seabed, while scouring that in Western Australia.
Mammals use the sponges as a kind of glove, "while the search for food, University of Zurich researcher said Michael Krutzen magazine New Scientist.
Other researchers have observed dolphins remove bones and break flatfish prey meters Golden trevally fish into smaller pieces for eating.
Thursday, February 5, 2009
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