his young wife's mother for four weeks on milk & # 39; times the protein & # 39; cow. But this mother is mammalian. She jumping spider with eight legs and a taste for fruit flies.
We mentioned mammals ourselves after our mammary glands. But other animals, tsetse fly pigeons, versions secrete milk for their babies. The nurses newly discovered inches Magnus Toxeus Can & # 39; is the most like the mammals, team & # 39; research from China suggests on 30 & # 39; November science.
biologists recognized Magnus T. As species by 1933, but the habit & # 39; mother & # 39; small spider was easy to get lost. The animal looking beasts such as fruit flies and retire to a small nest, perhaps attached to & # 39; leaf, to raise a family.
Co-author & # 39; Chen Zhanqi study & # 39; Chinese Academy of Sciences in & # 39; Manglunzhen, to study the behavior of & # 39; spider, noted several Magnus T. sharing the nest in 2012 and wondered if the species had some sort of & # 39; extended parental care. It was another five years before he spotted the behavior of & # 39; nurses, when spiderling clamp itself against the side of & # 39; under the exciting night & # 39; July 2017.
With a Magnus T. woman under a microscope, finger thrust & # 39; gentle on the side & # 39; bottom & # 39; abdomen will impress tiny bead & # 39; white liquid jewel called epigastric furrow, say researchers. For the first week or more after an outbreak & # 39; eggs, milk spider leaves mom drops around the nest for the young cat spots to drink. Then the nurses convert most mammals, b & # 39; those two penetrate themselves against the body & # 39; their mother.
<Img src = "data: image / png; base64, iVBORw0KGgoAAAANSUhEUgAAAAIAAAABCAIAAAB7QOjdAAAAGXRFWHRTb2Z0d2FyZQBBZG9iZSBJbWFnZVJlYWR5ccllPAAAAyZpVFh0WE1MOmNvbS5hZG9iZS54bXAAAAAAADw / eHBhY2tldCBiZWdpbj0i77u / IiBpZD0iVzVNME1wQ2VoaUh6cmVTek5UY3prYzlkIj8 + 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 9InhtcC5paWQ6 RDQ5NTg3OTZFNzAwMTFFNzhERUM5QzdDODEzNjdDMTEiIHN0UmVmOmRvY3VtZW50SUQ9InhtcC5kaWQ6RDQ5NTg3OTdFNzAwMTFFNzhERUM5QzdDODEzNjdDMTEiLz4gPC9yZGY6RGVzY3JpcHRpb24 + IDwvcmRmOlJERj4gPC94OnhtcG1ldGE IDW + / + eHBhY2tldCBlbmQ9InIiPz5Sc9lyAAAAEklEQVR42mJ89 4dAwMDQIABAA4AAsyHwrk2AAAAAElFTkSuQmCC "-eku data =" https://www.sciencenews.org/sites/default/files/images/112918_SM_jumping-spider_inline_370.jpg "alt =" jumping spider "class =" caption "style =" float: right; & # 39 ;: width 370px; height: 284px; "Title ="MILK maker Cooperative Woman Magnus Toxeus spider (shown) will help its young on milk for over a month. ~~ Z. Chen et al / Science 2018 "/>
As the spiderlings may take the intrigues of rolling dairy fiżjoloġista Wendy Hood & # 39; Auburn University in Alabama, to study nursing. In the Platypus and echidna, also known as spin anteater, women m & # 39; have nipples. pits of baby milk off the mammary glands to the skin surface "much like water from the sweat glands," she says. In most mammals, however, rather than feeding the baby turns, leading to the release of milk in his mouth.
Nutrition packed in dairy spider is familiar basic components in the milk of mammals: about 2 milligrams of & # 39; sugar per milliliters of milk, 5 milligrams of & # 39; fat and 124 milligrams of & # 39; protein. That's all ispiderlings to get the first 20 days & # 39; lives, researchers report. In Spider buejn laboratory, mothers sometimes ikkaċċjaw fruit flies provided by researchers, but never brought that home prey to help their offspring.
After 20 days, formed the spiderlings started alone but also maintained a nurse for nearly three weeks, the team found. B & # 39; that combined diet, 76 percent & # 39; & # 39 youth in; women laboratories survived into adulthood. But when the researchers sealed the tombs with epigastric mother & # 39; fluid & # 39; the typists correction as spiderlings emerge, died in & # 39; about 10 days.
The researchers were also curious about whether the imported milk since many young people started hunting. She did. Removing & # 39; these brands & # 39; the elderly through sealing & # 39; the kernel of & # 39; mom in 20 days reduced rate & # 39; survival to about 50 percent, the researchers say.
With such extensive care that the mother, Magnus T. Brim end cross nest for unusually long duration of the world's most & # 39; spiders, lonely and predatory, says Linda Rayor araknologu the behavior of the University & # 39; Cornell. Only about 120 among the nearly 48,000 known spider known to tolerate the company, including the brothers, for more than three weeks. And only about 30 of those live lives living lifetime. So an example of & # 39; spiders to share nest for 40 days, Rayor says, is "a big deal".
THE TIME & # 39; FOOD Woman Magnus Toxeus Spiders, native to tropical and subtropical areas in Asia, produce milk to feed their young for weeks, even after the ispiderlings start the game alone. Here, juvenile nurses & # 39; 1 weeks at & # 39; area & # 39; the abdomen & # 39; her mother where the milk is available.