{"id":2939,"date":"2015-05-28T11:47:48","date_gmt":"2015-05-28T09:47:48","guid":{"rendered":"http:\/\/blocs.xtec.cat\/cdacansantoi\/?p=2939"},"modified":"2017-07-05T13:24:15","modified_gmt":"2017-07-05T11:24:15","slug":"nedador-desquena","status":"publish","type":"post","link":"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/articles-animals-de-la-riera\/nedador-desquena\/","title":{"rendered":"NEDADOR D&#8217;ESQUENA"},"content":{"rendered":"<p style=\"text-align: justify;\">Els nedadors d\u2019esquena s\u00f3n uns insectes de la fam\u00edlia Notonectidae que s\u2019anomenen aix\u00ed perqu\u00e8 neden al rev\u00e9s.<\/p>\n<figure id=\"attachment_2952\" aria-describedby=\"caption-attachment-2952\" style=\"width: 300px\" class=\"wp-caption alignleft\"><a href=\"http:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-content\/uploads\/usu1385\/2015\/05\/N11.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-2952 size-full\" src=\"http:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-content\/uploads\/usu1385\/2015\/05\/N11.jpg\" alt=\"N11\" width=\"300\" height=\"229\" \/><\/a><figcaption id=\"caption-attachment-2952\" class=\"wp-caption-text\">Foto extreta del llibre &#8220;Flora y Fauna de los R\u00edos y Lagos de Europa&#8221;<\/figcaption><\/figure>\n<p style=\"text-align: justify;\"><strong>FORMA DEL COS:<\/strong><\/p>\n<p style=\"text-align: justify;\">El cos \u00e9s aerodin\u00e0mic i robust de fins a 16 mm de llarg de colors groc, marr\u00f3 o verd\u00f3s. Les seves dues potes del darrera s\u00f3n llargues i peludes (tenen sedes) i les mou coordinadament com si fossin rems d\u2019esquena a l\u2019aigua<strong>.<br \/>\n<\/strong>Tenen ulls grans i compostos i ales parcialment endurides.<\/p>\n<p style=\"text-align: justify;\"><strong>DESPLA\u00c7AMENT:<\/strong><\/p>\n<p style=\"text-align: justify;\">L\u2019aire contingut en els p\u00e8ls hidr\u00f2fugs de l\u2019abdomen produeix un impuls ascendent i li permet la posici\u00f3 invertida.<br \/>\nPer tant s\u00f3n nedadors de panxa enlaire ajudats per les potes del darrera que s\u00f3n m\u00e9s llargues i que les fan servir com a rems.<br \/>\nTamb\u00e9 poden volar si s&#8217;asseca el lloc on viuen i aix\u00ed migren a altres llocs amb aigua. No poden volar fins que no tenen les ales totalment seques.<br \/>\nObserveu aquest v\u00eddeo:<\/p>\n<p style=\"text-align: justify;\"><a href=\"https:\/\/www.youtube.com\/watch?v=vsHLyHpnqDI\">https:\/\/www.youtube.com\/watch?v=vsHLyHpnqDI<\/a><\/p>\n<p style=\"text-align: justify;\"><strong>LA RESPIRACI\u00d3<\/strong><\/p>\n<p style=\"text-align: justify;\">Quan puja a la superf\u00edcie de l&#8217;aigua, l\u2019aire queda retingut \u00a0per un conjunt de p\u00e8ls que repelen l\u2019aigua (hidr\u00f2fugs) situats en la part ventral del seu cos. Despr\u00e9s entra pels estigmes de la part posterior i \u00a0circula per les tr\u00e0quees.<\/p>\n<table>\n<tbody>\n<tr>\n<td>\n<p><figure id=\"attachment_2953\" aria-describedby=\"caption-attachment-2953\" style=\"width: 208px\" class=\"wp-caption alignleft\"><a href=\"http:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-content\/uploads\/usu1385\/2015\/05\/N2.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-2953\" src=\"http:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-content\/uploads\/usu1385\/2015\/05\/N2.jpg\" alt=\"N2\" width=\"208\" height=\"193\" srcset=\"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-content\/uploads\/usu1385\/2015\/05\/N2.jpg 632w, https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-content\/uploads\/usu1385\/2015\/05\/N2-300x277.jpg 300w\" sizes=\"auto, (max-width: 208px) 100vw, 208px\" \/><\/a><figcaption id=\"caption-attachment-2953\" class=\"wp-caption-text\">Foto extreta del llibre &#8220;La vida a les aig\u00fces dolces&#8221;<\/figcaption><\/figure><\/td>\n<td>\n<p><figure id=\"attachment_2955\" aria-describedby=\"caption-attachment-2955\" style=\"width: 204px\" class=\"wp-caption alignright\"><a href=\"http:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-content\/uploads\/usu1385\/2015\/05\/n5.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-2955\" src=\"http:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-content\/uploads\/usu1385\/2015\/05\/n5.jpg\" alt=\"n5\" width=\"204\" height=\"204\" srcset=\"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-content\/uploads\/usu1385\/2015\/05\/n5.jpg 774w, https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-content\/uploads\/usu1385\/2015\/05\/n5-150x150.jpg 150w, https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-content\/uploads\/usu1385\/2015\/05\/n5-300x300.jpg 300w, https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-content\/uploads\/usu1385\/2015\/05\/n5-768x768.jpg 768w\" sizes=\"auto, (max-width: 204px) 100vw, 204px\" \/><\/a><figcaption id=\"caption-attachment-2955\" class=\"wp-caption-text\">Foto extreta del llibre &#8220;La vida a les aig\u00fces dolces&#8221;<\/figcaption><\/figure><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<figure id=\"attachment_2958\" aria-describedby=\"caption-attachment-2958\" style=\"width: 299px\" class=\"wp-caption alignright\"><a href=\"http:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-content\/uploads\/usu1385\/2015\/05\/nedador11.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-2958\" src=\"http:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-content\/uploads\/usu1385\/2015\/05\/nedador11.jpg\" alt=\"nedador11\" width=\"299\" height=\"227\" \/><\/a><figcaption id=\"caption-attachment-2958\" class=\"wp-caption-text\">Foto extreta de la web: &#8220;http:\/\/blocs.xtec.cat\/faunaiflora\/2007\/03\/20\/el-nedador-desquena\/&#8221;<\/figcaption><\/figure>\n<p style=\"text-align: justify;\"><strong>LA NUTRICI\u00d3:<\/strong><\/p>\n<p style=\"text-align: justify;\">S\u00f3n depredadors.<br \/>\nDetecten les preses per les vibracions que fa l\u2019aigua i les ca\u00e7a amb moviments molt r\u00e0pids.<br \/>\nFan servir les potes mitjanes per ancorar-se a la vegetaci\u00f3 i juntament amb les potes anteriors capturen les seves preses que solen ser larves, pupes de d\u00edpters i fins i tot cap-grossos.<br \/>\nTenen un aparell bucal picador-xuclador (bec) per on expulsen un l\u00edquid descomponedor per despr\u00e9s absorbir el contingut del que capturen.<\/p>\n<p style=\"text-align: justify;\"><strong>\u00a0<\/strong><strong>EL COMPORTAMENT<\/strong><\/p>\n<p style=\"text-align: justify;\">Pot estar-se molta estona quiet i de cop moure\u2019s amb molta velocitat.<strong>\u00a0<\/strong><\/p>\n<p style=\"text-align: justify;\"><strong>L\u2019H\u00c0BITAT<\/strong><\/p>\n<p style=\"text-align: justify;\">Necessita aigua sense corrent i tranquil\u00b7la amb vegetaci\u00f3 abundant.<br \/>\nViuen en les capes superiors.<br \/>\nS\u00f3n tolerants a la contaminaci\u00f3 i trobar-los indica que pot haver pol\u00b7luci\u00f3 o reducci\u00f3 del cabal.<\/p>\n<p style=\"text-align: justify;\"><strong>\u00a0<\/strong><strong>LA POSTA:<\/strong><\/p>\n<p style=\"text-align: justify;\">La femella pot fer fins a 10 ous sobre plantes aqu\u00e0tiques<\/p>\n<p style=\"text-align: justify;\"><strong>\u00a0<\/strong><strong>CURIOSITATS:<\/strong><\/p>\n<figure id=\"attachment_2959\" aria-describedby=\"caption-attachment-2959\" style=\"width: 211px\" class=\"wp-caption alignleft\"><a href=\"http:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-content\/uploads\/usu1385\/2015\/05\/nedador2-e1478511122358.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-2959\" src=\"http:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-content\/uploads\/usu1385\/2015\/05\/nedador2-e1478511122358.jpg\" alt=\"nedador2\" width=\"211\" height=\"162\" \/><\/a><figcaption id=\"caption-attachment-2959\" class=\"wp-caption-text\">Foto extreta de la web: &#8220;http:\/\/blocs.xtec.cat\/faunaiflora\/2007\/03\/20\/el-nedador-desquena\/&#8221;<\/figcaption><\/figure>\n<p style=\"text-align: justify;\">Se\u2019ls coneix amb el nom de \u201c<strong>chinche acu\u00e1tica<\/strong>\u201d \u201c<strong>garapito<\/strong>\u201d o <strong>barquers <\/strong>ja que les seves potes fan al despla\u00e7ar-se un moviment semblant als rems d\u2019una barca.<br \/>\nTamb\u00e9 se\u2019ls anomena <strong>abella d\u2019aigua<\/strong> per qu\u00e8 disposa d\u2019un bec amb el que ens pot fer una fiblada dolorosa.<br \/>\nLa bombolla d\u2019aire que tenen a la seva panxa els fa de flotador.<\/p>\n<p style=\"text-align: justify;\">&#8211;<strong>\u00a0 <\/strong><strong>Per saber-ne m\u00e9s podeu consultar:<\/strong><\/p>\n<ul>\n<li style=\"text-align: justify;\">Nachtigall, Werner: \u201cAnimales de Charcas i estanques\u201d Guia de la Naturaleza Ed. Everest<\/li>\n<li style=\"text-align: justify;\">Pujade, Juli; Sario Victor: \u201cGuia dels insectes dels pa\u00efsos catalans \/1\u201d Con\u00e8ixer la natura Ed: Kapel SA<\/li>\n<li style=\"text-align: justify;\">Eckart Pott: \u201cPeque\u00f1a guia de la flora i fauna de los r\u00edos y lagos de Europa\u201d Ed Omega<\/li>\n<li style=\"text-align: justify;\">Hist\u00f2ria Natrual dels Pa\u00efsos Catalans volum 10 Artr\u00f2podes II Ed. Enciclop\u00e8dia Catalana.<\/li>\n<li style=\"text-align: justify;\">Ammann, Konrad: \u201cLa vida a les aig\u00fces dolces\u201d. Col\u00b7lecci\u00f3 Bivac. Ed. Teide<\/li>\n<li style=\"text-align: justify;\">Garc\u00eda-Valdecasas, Antonio; Vatic\u00f3n, Nacho : \u201c Los invertebrados de agua dulce\u201d Ed Penthalon<\/li>\n<li style=\"text-align: justify;\">Puig, Ma \u00c0ngels: \u201cEls macroinvertebrats dels rius catalans\u201d Departament de Medi Ambient Generalitat de Catalunya<\/li>\n<li style=\"text-align: justify;\">Macan, T.T. : \u201cGuia de animales invertebrtados de agua dulce\u201d Ed Eunsa<\/li>\n<li style=\"text-align: justify;\">\u00a0http:\/\/es.wikipedia.org\/wiki\/Notonectidae<\/li>\n<li style=\"text-align: justify;\"><a href=\"http:\/\/blocs.xtec.cat\/faunaiflora\/2007\/03\/20\/el-nedador-desquena\/\">http:\/\/blocs.xtec.cat\/faunaiflora\/2007\/03\/20\/el-nedador-desquena\/<\/a><\/li>\n<li style=\"text-align: justify;\"><a href=\"http:\/\/miniwiki.es.tl\/Insecto-nadador-de-espalda.htm\">http:\/\/miniwiki.es.tl\/Insecto-nadador-de-espalda.htm<\/a><\/li>\n<li style=\"text-align: justify;\"><a href=\"https:\/\/acuaestanques.wordpress.com\/category\/fauna-del-estanque\/\">https:\/\/acuaestanques.wordpress.com\/category\/fauna-del-estanque\/<\/a><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Els nedadors d\u2019esquena s\u00f3n uns insectes de la fam\u00edlia Notonectidae que s\u2019anomenen aix\u00ed perqu\u00e8 neden al rev\u00e9s. FORMA DEL COS: El cos \u00e9s aerodin\u00e0mic i robust de fins a 16 mm de llarg de colors groc, marr\u00f3 o verd\u00f3s. Les seves dues potes del darrera s\u00f3n llargues i peludes (tenen sedes) i les mou coordinadament [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":8831,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_bbp_topic_count":0,"_bbp_reply_count":0,"_bbp_total_topic_count":0,"_bbp_total_reply_count":0,"_bbp_voice_count":0,"_bbp_anonymous_reply_count":0,"_bbp_topic_count_hidden":0,"_bbp_reply_count_hidden":0,"_bbp_forum_subforum_count":0,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[374],"tags":[326],"class_list":["post-2939","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-articles-animals-de-la-riera","tag-nedador-desquena"],"post_mailing_queue_ids":[],"_links":{"self":[{"href":"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-json\/wp\/v2\/posts\/2939","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-json\/wp\/v2\/comments?post=2939"}],"version-history":[{"count":1,"href":"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-json\/wp\/v2\/posts\/2939\/revisions"}],"predecessor-version":[{"id":8832,"href":"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-json\/wp\/v2\/posts\/2939\/revisions\/8832"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-json\/wp\/v2\/media\/8831"}],"wp:attachment":[{"href":"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-json\/wp\/v2\/media?parent=2939"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-json\/wp\/v2\/categories?post=2939"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/serveiseducatius.xtec.cat\/cda-cansantoi\/wp-json\/wp\/v2\/tags?post=2939"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}