Scientists say every animal needs sleep These fruit flies didnt get the

first_imgSolvin Zankl/Minden Pictures By Michael PriceFeb. 20, 2019 , 2:00 PM This lack of sleep seemed to have no ill effects on health. Sleepless flies lived just as long as other flies, the researchers report today in Science Advances, and even flies with typical sleep schedules weren’t bothered when housed inside a rotating tube that forced them to lose about 96% of their sleep time.The authors say their findings undercut the common wisdom that sleep plays an indispensable biological role. Instead, they say, we should adopt the view that sleep probably does serve some as-yet-unknown evolutionary purpose, but it isn’t strictly necessary. Just don’t tell that to new parents. Click to view the privacy policy. Required fields are indicated by an asterisk (*) Country * Afghanistan Aland Islands Albania Algeria Andorra Angola Anguilla Antarctica Antigua and Barbuda Argentina Armenia Aruba Australia Austria Azerbaijan Bahamas Bahrain Bangladesh Barbados Belarus Belgium Belize Benin Bermuda Bhutan Bolivia, Plurinational State of Bonaire, Sint Eustatius and Saba Bosnia and Herzegovina Botswana Bouvet Island Brazil British Indian Ocean Territory Brunei Darussalam Bulgaria Burkina Faso Burundi Cambodia Cameroon Canada Cape Verde Cayman Islands Central African Republic Chad Chile China Christmas Island Cocos (Keeling) Islands Colombia Comoros Congo Congo, the Democratic Republic of the Cook Islands Costa Rica Cote d’Ivoire Croatia Cuba Curaçao Cyprus Czech Republic Denmark Djibouti Dominica Dominican Republic Ecuador Egypt El Salvador Equatorial Guinea Eritrea Estonia Ethiopia Falkland Islands (Malvinas) Faroe Islands Fiji Finland France French Guiana French Polynesia French Southern Territories Gabon Gambia Georgia Germany Ghana Gibraltar Greece Greenland Grenada Guadeloupe Guatemala Guernsey Guinea Guinea-Bissau Guyana Haiti Heard Island and McDonald Islands Holy See (Vatican City State) Honduras Hungary Iceland India Indonesia Iran, Islamic Republic of Iraq Ireland Isle of Man Israel Italy Jamaica Japan Jersey Jordan Kazakhstan Kenya Kiribati Korea, Democratic People’s Republic of Korea, Republic of Kuwait Kyrgyzstan Lao People’s Democratic Republic Latvia Lebanon Lesotho Liberia Libyan Arab Jamahiriya Liechtenstein Lithuania Luxembourg Macao Macedonia, the former Yugoslav Republic of Madagascar Malawi Malaysia Maldives Mali Malta Martinique Mauritania Mauritius Mayotte Mexico Moldova, Republic of Monaco Mongolia Montenegro Montserrat Morocco Mozambique Myanmar Namibia Nauru Nepal Netherlands New Caledonia New Zealand Nicaragua Niger Nigeria Niue Norfolk Island Norway Oman Pakistan Palestine Panama Papua New Guinea Paraguay Peru Philippines Pitcairn Poland Portugal Qatar Reunion Romania Russian Federation Rwanda Saint Barthélemy Saint Helena, Ascension and Tristan da Cunha Saint Kitts and Nevis Saint Lucia Saint Martin (French part) Saint Pierre and Miquelon Saint Vincent and the Grenadines Samoa San Marino Sao Tome and Principe Saudi Arabia Senegal Serbia Seychelles Sierra Leone Singapore Sint Maarten (Dutch part) Slovakia Slovenia Solomon Islands Somalia South Africa South Georgia and the South Sandwich Islands South Sudan Spain Sri Lanka Sudan Suriname Svalbard and Jan Mayen Swaziland Sweden Switzerland Syrian Arab Republic Taiwan Tajikistan Tanzania, United Republic of Thailand Timor-Leste Togo Tokelau Tonga Trinidad and Tobago Tunisia Turkey Turkmenistan Turks and Caicos Islands Tuvalu Uganda Ukraine United Arab Emirates United Kingdom United States Uruguay Uzbekistan Vanuatu Venezuela, Bolivarian Republic of Vietnam Virgin Islands, British Wallis and Futuna Western Sahara Yemen Zambia Zimbabwe Sign up for our daily newsletter Get more great content like this delivered right to you! Country Email Ask parents of newborns whether they think sleep is overrated and you’re liable to catch a death stare. Yet some fruit flies almost never nod off, according to a new study, suggesting that at least in some animals, sleep may not be all that necessary.Sleep is potentially costly to many animals, making them vulnerable to predators and stealing time from resource-gathering or mating opportunities. For that reason, scientists have long assumed it evolved to give animals some vital, evolutionary advantage—perhaps as a means of conserving energy or of giving the brain time to organize memories. In any case, no truly sleepless animal has ever been found in the wild.In the new study, researchers were observing Drosophila melanogaster fruit flies in the lab when they noticed a very large distribution in sleep duration. Most slept somewhere between 300 minutes and 600 minutes per day, but about 6% of females slept for less than 72 minutes per day, and three particularly restless individuals slept for only 15, 14, or 4 minutes per day, respectively. Scientists say every animal needs sleep. These fruit flies didn’t get the memolast_img

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