{"id":68618,"date":"2025-05-28T12:00:00","date_gmt":"2025-05-28T12:00:00","guid":{"rendered":"https:\/\/www.africa-press.net\/senegal\/politique\/punaises-de-lit-premier-parasite-urbain"},"modified":"2025-05-29T00:53:31","modified_gmt":"2025-05-29T00:53:31","slug":"punaises-de-lit-premier-parasite-urbain","status":"publish","type":"post","link":"https:\/\/www.africa-press.net\/senegal\/toutes-les-actualites\/punaises-de-lit-premier-parasite-urbain","title":{"rendered":"Punaises de Lit, Premier Parasite Urbain"},"content":{"rendered":"<p><span style=\"color: #ff6600\"><strong>Africa-Press &#8211; Senegal. <\/strong><\/span>000 ans, un petit groupe de punaises de lit de\u0301cida de quitter les chauves-souris pour sauter sur quelques ne\u0301andertaliens qui les co\u0302toyaient dans leur caverne, elles ont, sans le savoir, assure\u0301 leur avenir. Ce saut d\u2019ho\u0302te marque le de\u0301but d\u2019une longue histoire commune qui fait d\u2019elles les tout premiers ectoparasites urbains. C\u2019est ce que vient de confirmer une e\u0301tude mene\u0301e par des chercheurs de l\u2019Universite\u0301 Virginia Tech (E\u0301tats-Unis), publie\u0301e dans la revue Biology Letters.<\/p>\n<p><b>Une expansion urbaine be\u0301ne\u0301fique aux punaises<\/b><\/p>\n<p>En analysant le ge\u0301nome complet de deux ligne\u0301es distinctes de punaises (celle associe\u0301e aux chauves-souris et celle lie\u0301e aux humains), les chercheurs ont pu retracer leurs trajectoires de\u0301mographiques. Leurs re\u0301sultats montrent un contraste frappant: alors que la ligne\u0301e reste\u0301e fide\u0300le aux chauves-souris de\u0301croi\u0302t re\u0301gulie\u0300rement depuis leur apoge\u0301e au dernier a\u0302ge glaciaire, il y a environ 20.000 ans, celle associe\u0301e aux humains a explose\u0301 en paralle\u0300le de la construction des premie\u0300res cite\u0301s, il y a environ 10.000 a\u0300 12.000 ans.<\/p>\n<p>\u00ab Cette hausse correspond pre\u0301cise\u0301ment a\u0300 l\u2019e\u0301mergence des premiers grands e\u0301tablissements humains, notamment en Me\u0301sopotamie. Puis, au cours du dernier mille\u0301naire, on a assiste\u0301 a\u0300 une croissance exponentielle des punaises de lit, e\u0301galement corre\u0301le\u0301e a\u0300 l\u2019expansion urbaine humaine a\u0300 l\u2019e\u0301chelle mondiale. Ces expansions urbaines impliquent des densite\u0301s de population e\u0301leve\u0301es, ce qui permet aux punaises de lit de re\u0301agir a\u0300 ces densite\u0301s de population e\u0301leve\u0301es \u00bb, souligne Lindsay Miles, principale auteure de l\u2019e\u0301tude.<\/p>\n<p>Cette recherche, base\u0301e sur la comparaison ge\u0301nomique, re\u0301ve\u0300le une concordance claire entre l\u2019expansion humaine et celle des punaises de lit. En revanche, \u00ab la diminution continue de la ligne\u0301e des chauves-souris est e\u0301galement probablement influence\u0301e par l\u2019urbanisation, car elle re\u0301duit ge\u0301ne\u0301ralement les habitats disponibles pour les chauves-souris. Ainsi, lorsqu\u2019un ho\u0302te de\u0301cline, son parasite de\u0301cline e\u0301galement \u00bb, pre\u0301cise la spe\u0301cialiste.<\/p>\n<p><b>Une ve\u0301ritable course aux armements<\/b><\/p>\n<p>Mais cette histoire de succe\u0300s a un revers pre\u0301occupant: une rapide adaptation aux insecticides. De\u0300s l\u2019introduction massive du DDT apre\u0300s la Seconde guerre mondiale, les populations de punaises de lit s\u2019effondrent brutalement avant de rebondir en seulement quelques anne\u0301es.<\/p>\n<p>Une adaptation rapide qui tient a\u0300 la faible diversite\u0301 ge\u0301ne\u0301tique initiale de la ligne\u0301e humaine: \u00ab Quand les humains sont sortis des grottes, ils ont emporte\u0301 avec eux une petite portion seulement des punaises pre\u0301sentes. Cela signifie que la diversite\u0301 ge\u0301ne\u0301tique e\u0301tait faible, ce qui paradoxalement facilite une adaptation rapide, comme la re\u0301sistance aux insecticides \u00bb, pre\u0301cise William Booth, lui aussi co-auteur de l\u2019e\u0301tude.<\/p>\n<p>L\u2019e\u0301quipe de Virginia Tech, qui a de\u0301ja\u0300 identifie\u0301 une mutation ge\u0301ne\u0301tique a\u0300 l\u2019origine de cette re\u0301sistance dans une e\u0301tude pre\u0301ce\u0301dente, insiste sur l\u2019urgence de de\u0301velopper de nouvelles strate\u0301gies de contro\u0302le. \u00ab Aujourd\u2019hui, nous assistons a\u0300 une ve\u0301ritable course aux armements contre les punaises pour trouver de nouveaux insecticides et combinaisons d\u2019insecticides capables d\u2019e\u0301liminer comple\u0300tement ces populations \u00bb, avertit Lindsay Miles. \u00ab Notre laboratoire explore actuellement diffe\u0301rents me\u0301canismes de re\u0301sistance pour identifier comment mieux les combattre \u00bb.<\/p>\n<p><strong>Pour plus d&rsquo;informations et d&rsquo;analyses sur la <span style=\"color: #ff6600\">Senegal<\/span>, suivez <span style=\"color: #ff6600\">Africa-Press<\/span><\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Africa-Press &#8211; Senegal. 000 ans, un petit groupe de punaises de lit de\u0301cida de quitter les chauves-souris pour sauter sur quelques ne\u0301andertaliens qui les co\u0302toyaient dans leur caverne, elles ont, sans le savoir, assure\u0301 leur avenir. Ce saut d\u2019ho\u0302te marque le de\u0301but d\u2019une longue histoire commune qui fait d\u2019elles les tout premiers ectoparasites urbains. C\u2019est [&hellip;]<\/p>\n","protected":false},"author":82,"featured_media":68617,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[22,10],"tags":[44],"class_list":["post-68618","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-divers","category-toutes-les-actualites","tag-senegal-2"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.1 (Yoast SEO v27.0) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Punaises de Lit, Premier Parasite Urbain - Senegal<\/title>\n<meta name=\"description\" content=\"000 ans, un petit groupe de punaises de lit de\u0301cida de quitter les chauves-souris pour sauter sur quelques ne\u0301andertalie ...\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.africa-press.net\/senegal\/toutes-les-actualites\/punaises-de-lit-premier-parasite-urbain\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Punaises de Lit, Premier Parasite Urbain\" \/>\n<meta property=\"og:description\" content=\"000 ans, un petit groupe de punaises de lit de\u0301cida de quitter les chauves-souris pour sauter sur quelques ne\u0301andertalie ...\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.africa-press.net\/senegal\/toutes-les-actualites\/punaises-de-lit-premier-parasite-urbain\" \/>\n<meta property=\"og:site_name\" content=\"Senegal\" \/>\n<meta property=\"article:published_time\" content=\"2025-05-28T12:00:00+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-05-29T00:53:31+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/static.africa-press.net\/senegal\/sites\/13\/2025\/05\/sm_1748508240.670243.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1200\" \/>\n\t<meta property=\"og:image:height\" content=\"901\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"cfeditorfr\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u00c9crit par\" \/>\n\t<meta name=\"twitter:data1\" content=\"cfeditorfr\" \/>\n\t<meta name=\"twitter:label2\" content=\"Dur\u00e9e de lecture estim\u00e9e\" \/>\n\t<meta name=\"twitter:data2\" content=\"3 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.africa-press.net\/senegal\/toutes-les-actualites\/punaises-de-lit-premier-parasite-urbain#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.africa-press.net\/senegal\/toutes-les-actualites\/punaises-de-lit-premier-parasite-urbain\"},\"author\":{\"name\":\"cfeditorfr\",\"@id\":\"https:\/\/www.africa-press.net\/senegal\/#\/schema\/person\/2b1cf3cd81a31e3cd26889ca66d677f1\"},\"headline\":\"Punaises de Lit, Premier Parasite Urbain\",\"datePublished\":\"2025-05-28T12:00:00+00:00\",\"dateModified\":\"2025-05-29T00:53:31+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.africa-press.net\/senegal\/toutes-les-actualites\/punaises-de-lit-premier-parasite-urbain\"},\"wordCount\":600,\"commentCount\":0,\"image\":{\"@id\":\"https:\/\/www.africa-press.net\/senegal\/toutes-les-actualites\/punaises-de-lit-premier-parasite-urbain#primaryimage\"},\"thumbnailUrl\":\"https:\/\/static.africa-press.net\/senegal\/sites\/13\/2025\/05\/sm_1748508240.670243.jpg\",\"keywords\":[\"Senegal\"],\"articleSection\":[\"Divers\",\"Toutes les actualit\u00e9s\"],\"inLanguage\":\"fr-FR\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/www.africa-press.net\/senegal\/toutes-les-actualites\/punaises-de-lit-premier-parasite-urbain#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.africa-press.net\/senegal\/toutes-les-actualites\/punaises-de-lit-premier-parasite-urbain\",\"url\":\"https:\/\/www.africa-press.net\/senegal\/toutes-les-actualites\/punaises-de-lit-premier-parasite-urbain\",\"name\":\"Punaises de Lit, Premier Parasite Urbain - 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