{"id":33396,"date":"2017-08-29T04:00:00","date_gmt":"2017-08-29T08:00:00","guid":{"rendered":"https:\/\/www.yorku.ca\/researchdev\/2017\/08\/29\/york-research-finds-fruit-flies-die-in-the-cold-due-to-leaky-guts-2\/"},"modified":"2025-01-30T08:54:40","modified_gmt":"2025-01-30T13:54:40","slug":"york-research-finds-fruit-flies-die-in-the-cold-due-to-leaky-guts-2","status":"publish","type":"post","link":"https:\/\/www.yorku.ca\/research\/2017\/08\/29\/york-research-finds-fruit-flies-die-in-the-cold-due-to-leaky-guts-2\/","title":{"rendered":"York research finds fruit flies die in the cold due to leaky guts"},"content":{"rendered":"<div id=\"wrapper\" class=\"hfeed\">\n<div id=\"wrap\" class=\"container clearfix\">\n<section id=\"content\" class=\"primary\">\n<article id=\"post-245170\" class=\"post-245170 post type-post status-publish format-standard has-post-thumbnail hentry category-top-stories tag-research tag-science tag-top-stories\">\n<div class=\"entry clearfix\">\n<p>Flies, like most insects, are poikilothermic ectotherms. This means that unlike us, their body temperature follows the temperature of the surrounding air. When it is warm, flies are happy; a cold fly is a sad fly, and we are beginning to understand why. New research conducted in the Faculty of Science at York University suggests that fruit flies can\u2019t tolerate low temperature for an interesting reason: their guts get leaky.<\/p>\n<div id=\"attachment_245172\" class=\"wp-caption aligncenter\" style=\"width: 734px\">\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-245172\" src=\"http:\/\/yfile.news.yorku.ca\/files\/2017\/08\/fruit-fly.jpg\" alt=\"\" width=\"724\" height=\"444\" \/><\/p>\n<p class=\"wp-caption-text\">Common fruit fly, Drosophila melanogaster (image: Heath MacMillan, York University)<\/p>\n<\/div>\n<p>\u201cMost fruit flies are chill susceptible,\u201d said Heath MacMillan, who is now based at Carleton University, but led the study as a Banting Postdoctoral Fellow working with Professors Andrew Donini and Scott Kelly in the Department of Biology. \u201cThat means that unlike some insects that can survive or avoid freezing solid in the cold, they simply cannot take it, and instead die at relatively mild low temperatures.\u201d<\/p>\n<p>In the cold, insects struggle to keep salts and water from accumulating in their gut, and this loss of balance can trigger cell death. If these injuries are severe enough, the insect cannot survive. The researchers used fruit flies to examine whether this loss of balance was related to a problem regulating the barriers between cells in the gut. Indeed, exposure to a temperature of 0 C caused the guts of the flies to get leaky. However, exposing the flies to just a bit of chilling first led them to be more cold tolerant.<\/p>\n<p>\u201cIf we first exposed the flies to 10 C to acclimate, their cold tolerance improved, and they were also better able to maintain the barriers in their gut tissues,\u201d said Donini. \u201cThese changes were specifically associated with changes in proteins that we already know are structural components of these barriers.\u201d<\/p>\n<p>The researchers plan to use this information to examine specifically how these proteins are contributing to insect survival in the cold. The ultimate goal is to better understand how temperature sets critical limits to insect survival, which has implications for controlling insect pests in a period of climate change.<\/p>\n<p>Courtesy of YFile.<\/p>\n<\/div>\n<\/article>\n<\/section>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Flies, like most insects, are poikilothermic ectotherms. This means that unlike us, their body temperature follows the temperature of the surrounding air. When it is warm, flies are happy; a cold fly is a sad fly, and we are beginning to understand why. New research conducted in the Faculty of Science at York University suggests [&hellip;]<\/p>\n","protected":false},"author":18,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_kad_blocks_custom_css":"","_kad_blocks_head_custom_js":"","_kad_blocks_body_custom_js":"","_kad_blocks_footer_custom_js":"","footnotes":""},"categories":[39,136],"tags":[],"class_list":["post-33396","post","type-post","status-publish","format-standard","hentry","category-news","category-science"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>York research finds fruit flies die in the cold due to leaky guts | Research &amp; Innovation<\/title>\n<meta name=\"description\" content=\"For immediate release: York research finds fruit flies die in the cold due to leaky guts. 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From the Office of the Vice-President Research &amp; Innovation at YorkU.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.yorku.ca\/research\/2017\/08\/29\/york-research-finds-fruit-flies-die-in-the-cold-due-to-leaky-guts-2\/\" \/>\n<meta property=\"og:site_name\" content=\"Research &amp; Innovation\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/yorkuniversity\/\" \/>\n<meta property=\"article:published_time\" content=\"2017-08-29T08:00:00+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-01-30T13:54:40+00:00\" \/>\n<meta property=\"og:image\" content=\"http:\/\/yfile.news.yorku.ca\/files\/2017\/08\/fruit-fly.jpg\" \/>\n<meta name=\"author\" content=\"muellerm\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@yorkuniversity\" \/>\n<meta name=\"twitter:site\" content=\"@yorkuniversity\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"muellerm\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"NewsArticle\",\"@id\":\"https:\\\/\\\/www.yorku.ca\\\/research\\\/2017\\\/08\\\/29\\\/york-research-finds-fruit-flies-die-in-the-cold-due-to-leaky-guts-2\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.yorku.ca\\\/research\\\/2017\\\/08\\\/29\\\/york-research-finds-fruit-flies-die-in-the-cold-due-to-leaky-guts-2\\\/\"},\"author\":{\"name\":\"muellerm\",\"@id\":\"https:\\\/\\\/www.yorku.ca\\\/research\\\/#\\\/schema\\\/person\\\/0df8e03e86c4170d960919a0b34447d0\"},\"headline\":\"York research finds fruit flies die in the cold due to leaky guts\",\"datePublished\":\"2017-08-29T08:00:00+00:00\",\"dateModified\":\"2025-01-30T13:54:40+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.yorku.ca\\\/research\\\/2017\\\/08\\\/29\\\/york-research-finds-fruit-flies-die-in-the-cold-due-to-leaky-guts-2\\\/\"},\"wordCount\":355,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\\\/\\\/www.yorku.ca\\\/research\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/www.yorku.ca\\\/research\\\/2017\\\/08\\\/29\\\/york-research-finds-fruit-flies-die-in-the-cold-due-to-leaky-guts-2\\\/#primaryimage\"},\"thumbnailUrl\":\"http:\\\/\\\/yfile.news.yorku.ca\\\/files\\\/2017\\\/08\\\/fruit-fly.jpg\",\"articleSection\":[\"News\",\"Science\"],\"inLanguage\":\"en-CA\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.yorku.ca\\\/research\\\/2017\\\/08\\\/29\\\/york-research-finds-fruit-flies-die-in-the-cold-due-to-leaky-guts-2\\\/\",\"url\":\"https:\\\/\\\/www.yorku.ca\\\/research\\\/2017\\\/08\\\/29\\\/york-research-finds-fruit-flies-die-in-the-cold-due-to-leaky-guts-2\\\/\",\"name\":\"York research finds fruit flies die in the cold due to leaky guts | Research &amp; Innovation\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.yorku.ca\\\/research\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/www.yorku.ca\\\/research\\\/2017\\\/08\\\/29\\\/york-research-finds-fruit-flies-die-in-the-cold-due-to-leaky-guts-2\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/www.yorku.ca\\\/research\\\/2017\\\/08\\\/29\\\/york-research-finds-fruit-flies-die-in-the-cold-due-to-leaky-guts-2\\\/#primaryimage\"},\"thumbnailUrl\":\"http:\\\/\\\/yfile.news.yorku.ca\\\/files\\\/2017\\\/08\\\/fruit-fly.jpg\",\"datePublished\":\"2017-08-29T08:00:00+00:00\",\"dateModified\":\"2025-01-30T13:54:40+00:00\",\"description\":\"For immediate release: York research finds fruit flies die in the cold due to leaky guts. 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