The proboscis monkey, nicknamed the "long-nosed monkey" due to its huge, protruding nose, now has an other claim to fame: it regularly regurgitates and rechews his cuisine.
The proboscis monkey demonstrates, the first naturally occurring instances of running this behavior in a monkey, conclude the authors of the paper, published in the latest Royal Society biology letters.
?Gorillas people are sometimes upchuck, rechew and swallow, but if on even a semi-regular basis done, the actions are considered pathological.
"Stomach and intestines of the proboscis monkey drastically different from the humans and apes", said lead author Ikki Matsuda Discovery News. "The proboscis Monkey has a different sacculated (caliber) previous magens where bacterial digestion before the glandular stomach."
MATSUDA, scientists at the Kyoto University Primate Research Institute, and his colleagues the practices of the proboscis monkeys included life along a tributary of the Kinabatangan River, Malaysia. The researchers collected their data from a boat on the River during the early morning and late afternoon from January 2000 to March 2001.
At least 23 different monkeys were on regurgitating and rechewing. If this is done, the monkey would contract stomach and its tongue outside its raised mouth remains the primates.
The regurgitated material remained in the mouth, but could sometimes be seen on camera. The monkey then blew out his cheeks swallowed rechewed and the food for the second time.
MATSUDA, said he and his colleagues "speculate that the behavior was thus for a increased food intake under conditions still-to - be specified."
He said that probably the monkey faster for larger particles of food can digest with the behavior. He the theory "means the monkey can eating more earlier, because the bacteria need such a long time to digest the material."
The proboscis monkey is food from different proportions of leaves and fruits. Some can be very fibrous. The researchers could however not assign one specific type of food the belching/rechewing behavior.
Ruminants such as cows, Digest in a similar way constantly. They tear plant materials and swallow it. After processing a contraction sends the Cud back up material where it is up to the mouth for a long time before again swallowed is chewed.
Peter Langer, Professor in the Department of Anatomy and cell biology at the Justus-Liebig-Universit?t is one of the world's leading experts on ruminant and its nutrition processes. He is the author of the book "mammalian herbivores stomach: comparative anatomy, function and evolution."
Langer, told Discovery News, you necessarily to make "Clear this rumination in the Artiodactyla (cattle and other cloven-hoofed animals) and regurgitation and Remastication in other mammals ordered, including primates, various physiological processes."
Koalas, for example, are not ruminants but like the proboscis monkey, to have observed them regurgitating and rechewing their food. You are only under certain circumstances, for example. If their teeth wear out aging or when breastfeeding women have to consume more food to believed.
MATSUDA, said that when he and his team how had more regularly observed in the monkey, "10 minutes after waking up in the morning, say we you weird called could have." He added that this study focuses only on a population of monkeys, so the behavior of a scholar could even be tradition.
He said "traditions, particularly related to feeding, Primaten--as the macaques were reported that wash food and it also with sea-water season." "We can close not simply as a tradition."
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