{"id":1104,"date":"2016-08-18T14:08:53","date_gmt":"2016-08-18T17:08:53","guid":{"rendered":"http:\/\/biologo.com.br\/bio\/?p=1104"},"modified":"2020-04-15T22:14:53","modified_gmt":"2020-04-16T01:14:53","slug":"anfibios","status":"publish","type":"post","link":"https:\/\/biologo.com.br\/bio\/anfibios\/","title":{"rendered":"Anf\u00edbios"},"content":{"rendered":"<p><span style=\"color: #000000; font-size: 14pt;\"><span style=\"color: #3366ff;\"><strong>Anf\u00edbios:<\/strong><\/span> A palavra <em>anf\u00edbio\u00a0<\/em>tem\u00a0origem grega, significando &#8220;vida dupla&#8221;, devido a capacidade\u00a0de viver em ambiente terrestre e aqu\u00e1tico. Entretanto, dependem da \u00e1gua para a reprodu\u00e7\u00e3o.\u00a0N\u00e3o s\u00e3o encontrados no ambiente marinho, apenas na \u00e1gua doce e em ambiente terrestre.<\/span><\/p>\n<p><span style=\"color: #000000; font-size: 14pt;\">Os anf\u00edbios s\u00e3o\u00a0animais vertebrados, pecilot\u00e9rmicos que n\u00e3o possuem bolsa amni\u00f3tica agrupados na classe Amphibia.\u00a0<\/span><\/p>\n<h2><span style=\"font-family: 'courier new', courier, monospace; color: #000000;\"><strong><span style=\"font-size: 24pt;\">Os Anf\u00edbios<\/span><\/strong><\/span><\/h2>\n<p><a href=\"https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2015\/11\/herpetologia.jpg\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" data-attachment-id=\"320\" data-permalink=\"https:\/\/biologo.com.br\/bio\/herpetologia\/herpetologia\/\" data-orig-file=\"https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2015\/11\/herpetologia.jpg?fit=631%2C351&amp;ssl=1\" data-orig-size=\"631,351\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"herpetologia\" data-image-description=\"\" data-image-caption=\"&lt;p&gt;herpetologia&lt;\/p&gt;\n\" data-large-file=\"https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2015\/11\/herpetologia.jpg?fit=631%2C351&amp;ssl=1\" class=\"wp-image-320 size-medium alignright\" src=\"https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2015\/11\/herpetologia-300x167.jpg?resize=300%2C167\" alt=\"herpetologia\" width=\"300\" height=\"167\" srcset=\"https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2015\/11\/herpetologia.jpg?resize=300%2C167&amp;ssl=1 300w, https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2015\/11\/herpetologia.jpg?w=631&amp;ssl=1 631w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><\/p>\n<p><span style=\"color: #000000;\"><span style=\"font-family: georgia, palatino, serif; font-size: 24pt;\"><strong>A<\/strong><\/span> caracter\u00edstica mais marcante dos anf\u00edbios \u00e9 o seu ciclo de vida dividido em duas fases: uma aqu\u00e1tica e outra terrestre, apesar de haver exce\u00e7\u00f5es.\u00a0<\/span><\/p>\n<p><span style=\"color: #000000;\">Nas \u00faltimas d\u00e9cadas tem ocorrido\u00a0um decl\u00ednio das popula\u00e7\u00f5es de anf\u00edbios ao redor do globo. Muitas esp\u00e9cies est\u00e3o amea\u00e7adas ou extintas.<\/span><\/p>\n<ul>\n<li><span style=\"font-size: 14pt;\"><span style=\"color: #0000ff;\"><a style=\"color: #0000ff;\" href=\"http:\/\/biologo.com.br\/bio\/fauna-brasileira\/\">Fauna Brasileira<\/a><\/span><\/span><\/li>\n<li><span style=\"font-size: 14pt;\"><a href=\"http:\/\/biologo.com.br\/bio\/descoberto-anfibio-fluorescente\/\">Descoberto anf\u00edbio fluorescente<\/a><\/span><\/li>\n<\/ul>\n<p><span style=\"color: #000000;\">Devido \u00e0s suas caracter\u00edsticas biol\u00f3gicas como a forte depend\u00eancia da \u00e1gua doce, os anf\u00edbios s\u00e3o considerados por muitos bi\u00f3logos um bom modelo de bioindicador (esp\u00e9cie que reflete o estado bi\u00f3tico ou abi\u00f3tico de um <span style=\"color: #0000ff;\"><a style=\"color: #0000ff;\" href=\"http:\/\/biologo.com.br\/bio\/meio-ambiente\/\">meio ambiente<\/a><\/span>).<\/span><\/p>\n<p><span style=\"color: #000000;\">Algumas das\u00a0caracter\u00edsticas que os tornam dependentes da \u00e1gua para sobreviver s\u00e3o: pele perme\u00e1vel e\u00a0corpo\u00a0sujeito \u00e0 desidrata\u00e7\u00e3o, fecunda\u00e7\u00e3o externa, ovos sem casca dura\u00a0e uma fase larval com a respira\u00e7\u00e3o branquial.<\/span><\/p>\n<blockquote><p><span style=\"color: #ffffff;\">Est\u00e3o identificadas cerca de seis mil esp\u00e9cies vivas de anf\u00edbios cadastradas no <em>Amphibian Species of the World.<\/em><\/span><\/p><\/blockquote>\n<p><span style=\"font-size: 14pt;\">\u2022\u00a0<span style=\"color: #0000ff;\"><a style=\"color: #0000ff;\" href=\"http:\/\/biologo.com.br\/bio\/herpetologia\/\">Herpetologia<\/a><\/span><\/span><\/p>\n<h3><strong><span style=\"font-size: 14pt; color: #800000; font-family: 'courier new', courier, monospace;\">Evolu\u00e7\u00e3o dos anf\u00edbios<\/span><\/strong><\/h3>\n<p><a href=\"https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2016\/08\/anfibios.jpg\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" data-attachment-id=\"1108\" data-permalink=\"https:\/\/biologo.com.br\/bio\/anfibios\/anfibios-2\/\" data-orig-file=\"https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2016\/08\/anfibios.jpg?fit=720%2C502&amp;ssl=1\" data-orig-size=\"720,502\" data-comments-opened=\"0\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"anfibios\" data-image-description=\"\" data-image-caption=\"&lt;p&gt;Anf\u00edbios&lt;\/p&gt;\n\" data-large-file=\"https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2016\/08\/anfibios.jpg?fit=720%2C502&amp;ssl=1\" class=\"wp-image-1108 size-medium alignleft\" src=\"https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2016\/08\/anfibios-300x209.jpg?resize=300%2C209\" alt=\"Anf\u00edbios\" width=\"300\" height=\"209\" srcset=\"https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2016\/08\/anfibios.jpg?resize=300%2C209&amp;ssl=1 300w, https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2016\/08\/anfibios.jpg?resize=392%2C272&amp;ssl=1 392w, https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2016\/08\/anfibios.jpg?resize=130%2C90&amp;ssl=1 130w, https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2016\/08\/anfibios.jpg?w=720&amp;ssl=1 720w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><\/p>\n<p><span style=\"color: #000000;\">Os anf\u00edbios surgiram h\u00e1 cerca de 350 milh\u00f5es de anos, no Devoniano, e foram os primeiros animais vertebrados terrestres. Segundo estudos de <span style=\"color: #0000ff;\"><a style=\"color: #0000ff;\" href=\"http:\/\/biologo.com.br\/bio\/fosseis\/\">f\u00f3sseis<\/a> <\/span>o grupo teria evolu\u00eddo a partir dos peixes pulmonados de nadadeira lobada, tal como o <em>Tiktaalik<\/em> e servido de ancestral para os r\u00e9pteis, al\u00e9m de serem os primeiros vertebrados em habitat terrestre.\u00a0<\/span><\/p>\n<p><span style=\"color: #000000;\">Em rela\u00e7\u00e3o aos peixes (seus antecessores) os anf\u00edbios possuem menor depend\u00eancia da \u00e1gua, contudo ainda n\u00e3o representam seres verdadeiramente terrestres, tendo a necessidade de viver em locais \u00famidos mesmo quando adultos.\u00a0<\/span><\/p>\n<p><span style=\"color: #000000;\">Os anf\u00edbios evolu\u00edram no Per\u00edodo Devoniano e eram os principais predadores dos per\u00edodos Carbon\u00edfero e Permiano, mas muitas linhagens foram exterminadas durante a extin\u00e7\u00e3o do Permiano-Tri\u00e1ssico.\u00a0<\/span><\/p>\n<h4><span style=\"color: #800000; font-family: 'courier new', courier, monospace;\"><strong><span style=\"font-size: 12pt;\">Principais caracter\u00edsticas<\/span><\/strong><\/span><\/h4>\n<p><span style=\"color: #000000;\">A an\u00e1lise de um ser da classe dos anf\u00edbios exige a divis\u00e3o de seu ciclo vital, devido a diferen\u00e7as morfofisiol\u00f3gicas entre a fase aqu\u00e1tica e a terrestre (adulta).<\/span><\/p>\n<figure id=\"attachment_1111\" aria-describedby=\"caption-attachment-1111\" style=\"width: 300px\" class=\"wp-caption alignright\"><a href=\"https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2016\/08\/ovos-de-anfibios.jpg\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" data-attachment-id=\"1111\" data-permalink=\"https:\/\/biologo.com.br\/bio\/anfibios\/ovos-de-anfibios\/\" data-orig-file=\"https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2016\/08\/ovos-de-anfibios.jpg?fit=631%2C351&amp;ssl=1\" data-orig-size=\"631,351\" data-comments-opened=\"0\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"ovos-de-anfibios\" data-image-description=\"&lt;p&gt;Alguns anf\u00edbios botam ovos que s\u00e3o muito claros. Isto torna mais f\u00e1cil para assistir a um girino crescer dentro de seu ovo.&lt;\/p&gt;\n\" data-image-caption=\"&lt;p&gt;Reprodu\u00e7\u00e3o dos anf\u00edbios. by Geoff Gallice f&lt;\/p&gt;\n\" data-large-file=\"https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2016\/08\/ovos-de-anfibios.jpg?fit=631%2C351&amp;ssl=1\" class=\"wp-image-1111 size-medium\" src=\"https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2016\/08\/ovos-de-anfibios-300x167.jpg?resize=300%2C167\" alt=\"reprodu\u00e7\u00e3o dos anf\u00edbios\" width=\"300\" height=\"167\" srcset=\"https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2016\/08\/ovos-de-anfibios.jpg?resize=300%2C167&amp;ssl=1 300w, https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2016\/08\/ovos-de-anfibios.jpg?w=631&amp;ssl=1 631w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><figcaption id=\"caption-attachment-1111\" class=\"wp-caption-text\"><strong><span style=\"font-size: 10pt;\"><span style=\"font-size: 8pt;\">Girinos no interior dos ovos<\/span><\/span><\/strong><span style=\"font-size: 10pt;\"><span style=\"font-size: 8pt;\">. by Geoff Gallice<\/span><\/span><\/figcaption><\/figure>\n<p><span style=\"color: #000000;\">Quando jovens, a maioria das esp\u00e9cies \u00a0vivem exclusivamente em ambiente aqu\u00e1tico dulc\u00edcola, e sua estrutura corp\u00f3rea \u00e9 semelhante a de um alevino, realizando respira\u00e7\u00e3o branquial. A fase jovem, tamb\u00e9m conhecida como larval, \u00e9 determinada do nascimento at\u00e9 a metamorfose do anf\u00edbio, que lhe permitir\u00e1 sair do ambiente aqu\u00e1tico e fazer parte do ambiente terrestre. As larvas possuem cauda e at\u00e9 mesmo linha lateral como os peixes.<\/span><\/p>\n<p><span style=\"color: #000000;\">J\u00e1 adultos, a depend\u00eancia da \u00e1gua dos anf\u00edbios jovens \u00e9 superada parcialmente, e ap\u00f3s a <a href=\"https:\/\/biologo.com.br\/bio\/metamorfose\/\">metamorfose<\/a>, a maioria das esp\u00e9cies, pode deixar a \u00e1gua e viver em habitat terrestre. Apesar de pulmonados, os representantes dessa classe possuem uma superf\u00edcie alveolar muito pequena, incapaz de suprir toda a demanda gasosa do animal. Portanto, como complemento \u00e0 respira\u00e7\u00e3o pulmonar, os anf\u00edbios realizam a respira\u00e7\u00e3o cut\u00e2nea (trocas de gases atrav\u00e9s da pele), e para tanto possuem a pele bastante vascularizada e sempre umedecida.<\/span><\/p>\n<h6><span style=\"font-family: 'courier new', courier, monospace; font-size: 14pt; color: #000000;\"><strong>Circula\u00e7\u00e3o <\/strong><\/span><\/h6>\n<p><span style=\"color: #000000;\">A circula\u00e7\u00e3o nos anf\u00edbios \u00e9 dita fechada (o sangue sempre permanece em vasos), dupla (h\u00e1 o circuito corp\u00f3reo e o circuito pulmonar) e incompleta (j\u00e1 que h\u00e1 mistura do sangue venoso e arterial no cora\u00e7\u00e3o). O cora\u00e7\u00e3o do anf\u00edbio apresenta apenas tr\u00eas cavidades: dois \u00e1trios, nos quais h\u00e1 chegada de sangue ao cora\u00e7\u00e3o; e um ventr\u00edculo, no qual o sangue \u00e9 direcionado ao pulm\u00e3o ou ao corpo do animal.<\/span><\/p>\n<h5><span style=\"font-size: 14pt; font-family: 'courier new', courier, monospace;\"><strong><span style=\"color: #000000;\">Sistema respirat\u00f3rio<\/span><\/strong><\/span><\/h5>\n<figure id=\"attachment_1109\" aria-describedby=\"caption-attachment-1109\" style=\"width: 460px\" class=\"wp-caption alignright\"><a href=\"https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2016\/08\/salamandra.jpg\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" data-attachment-id=\"1109\" data-permalink=\"https:\/\/biologo.com.br\/bio\/anfibios\/salamandra\/\" data-orig-file=\"https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2016\/08\/salamandra.jpg?fit=460%2C288&amp;ssl=1\" data-orig-size=\"460,288\" data-comments-opened=\"0\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"salamandra\" data-image-description=\"\" data-image-caption=\"&lt;p&gt;Salamandra (Bolitoglossa taylori) &lt;\/p&gt;\n\" data-large-file=\"https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2016\/08\/salamandra.jpg?fit=460%2C288&amp;ssl=1\" class=\"size-full wp-image-1109\" src=\"https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2016\/08\/salamandra.jpg?resize=460%2C288\" alt=\"Salamandra - Anf\u00edbios\" width=\"460\" height=\"288\" srcset=\"https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2016\/08\/salamandra.jpg?w=460&amp;ssl=1 460w, https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2016\/08\/salamandra.jpg?resize=300%2C188&amp;ssl=1 300w\" sizes=\"auto, (max-width: 460px) 100vw, 460px\" \/><\/a><figcaption id=\"caption-attachment-1109\" class=\"wp-caption-text\"><span style=\"color: #333333;\"><strong><span style=\"font-size: 10pt;\">Salamandra (<em>Bolitoglossa taylori<\/em>) esp\u00e9cie nova colombiana<\/span><\/strong><\/span><\/figcaption><\/figure>\n<p><span style=\"color: #000000;\">No est\u00e1gio larval, os anf\u00edbios respiram por br\u00e2nquias, tal como os peixes. Quando adultos, perdem as br\u00e2nquias e passam a viver tamb\u00e9m em ambientes terrestres, sendo que a respira\u00e7\u00e3o pulmonar passa a ser sua principal via de obten\u00e7\u00e3o de gases. O fino, perme\u00e1vel e altamente vascularizado tegumento dos anf\u00edbios tamb\u00e9m permite a troca de gases, sendo esta modalidade respirat\u00f3ria denominada respira\u00e7\u00e3o cut\u00e2nea.<\/span><\/p>\n<p><span style=\"color: #000000;\">A pele deve, no entanto, necessariamente estar \u00famida, pois gases n\u00e3o se difundem em superf\u00edcies secas. Durante a fase adulta os pulm\u00f5es s\u00e3o a principal fonte de O2 em anf\u00edbios, embora a pele represente o principal meio de libera\u00e7\u00e3o de CO2. <\/span><\/p>\n<p><span style=\"color: #000000;\">Alguns anf\u00edbios, tais como aqueles adaptados \u00e0 vida em ambiente secos, apresentam normalmente uma respira\u00e7\u00e3o quase que inteiramente pulmonar; mesmo aqueles que alternam entre ambientes aqu\u00e1ticos e terrestres podem alternar entre essas modalidades de acordo com a situa\u00e7\u00e3o.<\/span><\/p>\n<h6><span style=\"font-size: 14pt; font-family: 'courier new', courier, monospace;\"><strong>Sistema excretor<\/strong><\/span><\/h6>\n<p><span style=\"color: #000000;\">O seu sistema excretor apresenta rins meson\u00e9fricos que s\u00e3o ligados por ureteres \u00e0 bexiga, que por sua vez est\u00e1 ligada \u00e0 cloaca. Quando no estado larval o produto de sua excre\u00e7\u00e3o \u00e9 a am\u00f4nia, por\u00e9m no estado adulto excretam ureia. Quanto a locomo\u00e7\u00e3o, os membros da ordem Anura s\u00e3o, em sua maioria, saltadores, as salamandras [Caudata] caminham e as cobras-cegas [Gymnophiona] arrastam-se por contra\u00e7\u00f5es musculares. <\/span><\/p>\n<p><span style=\"color: #000000;\">Na \u00e1gua s\u00e3o nadadores, sendo que quando na fase larval utilizam a cauda e quando adultas, as r\u00e3s utilizam as patas, que possuem membranas interdigitais. As pererecas apresentam discos adesivos nos dedos, por equ\u00edvoco definidos como ventosas.<\/span><\/p>\n<h6><strong><span style=\"font-size: 14pt; font-family: 'courier new', courier, monospace;\">Sistema nervoso<\/span><\/strong><\/h6>\n<figure id=\"attachment_4304\" aria-describedby=\"caption-attachment-4304\" style=\"width: 300px\" class=\"wp-caption alignright\"><a href=\"http:\/\/biologo.com.br\/bio\/universo-dos-anfibios\/\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" data-attachment-id=\"4304\" data-permalink=\"https:\/\/biologo.com.br\/bio\/universo-dos-anfibios\/universo-dos-anfibios-2\/\" data-orig-file=\"https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2018\/07\/Universo-dos-Anf%C3%ADbios.jpg?fit=631%2C351&amp;ssl=1\" data-orig-size=\"631,351\" data-comments-opened=\"0\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"Universo-dos-Anf\u00edbios\" data-image-description=\"&lt;p&gt;Document\u00e1rio Universo dos Anf\u00edbios&lt;\/p&gt;\n\" data-image-caption=\"&lt;p&gt;Document\u00e1rio Universo dos Anf\u00edbios&lt;\/p&gt;\n\" data-large-file=\"https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2018\/07\/Universo-dos-Anf%C3%ADbios.jpg?fit=631%2C351&amp;ssl=1\" class=\"wp-image-4304 size-medium\" src=\"https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2018\/07\/Universo-dos-Anf%C3%ADbios-300x167.jpg?resize=300%2C167\" alt=\"Universo dos Anf\u00edbios\" width=\"300\" height=\"167\" srcset=\"https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2018\/07\/Universo-dos-Anf%C3%ADbios.jpg?resize=300%2C167&amp;ssl=1 300w, https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2018\/07\/Universo-dos-Anf%C3%ADbios.jpg?w=631&amp;ssl=1 631w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><figcaption id=\"caption-attachment-4304\" class=\"wp-caption-text\"><span style=\"font-size: 10pt; color: #0000ff;\"><a style=\"color: #0000ff;\" href=\"http:\/\/biologo.com.br\/bio\/universo-dos-anfibios\/\">Document\u00e1rio Universo dos Anf\u00edbios<\/a><\/span><\/figcaption><\/figure>\n<p><span style=\"color: #000000;\">O sistema nervoso dos anf\u00edbios tem como principal \u00f3rg\u00e3o o enc\u00e9falo. Apresentam boa vis\u00e3o, com exce\u00e7\u00e3o das cobras-cegas, e tato em toda superf\u00edcie corporal. O seu sistema olfativo apresenta narinas e os \u00f3rg\u00e3os de Jacobson, no teto da cavidade nasal. Em sua l\u00edngua se encontram bot\u00f5es gustativos.<\/span><\/p>\n<h6><span style=\"font-size: 14pt;\"><strong><span style=\"font-family: 'courier new', courier, monospace;\">Veneno<\/span><\/strong><\/span><\/h6>\n<p><span style=\"color: #000000;\">Alguns anf\u00edbios podem ser venenosos, sendo que alguns deles est\u00e3o inclusive entre os animais mais venenosos. Os sapos possuem uma gl\u00e2ndula parat\u00f3ide que produz veneno, e muitas gl\u00e2ndulas pequenas espalhadas por toda superf\u00edcie do corpo, produtoras de muco e veneno. Entretanto, este veneno da gl\u00e2ndula parat\u00f3ide \u00e9 eliminado apenas quando tal gl\u00e2ndula \u00e9 apertada. <\/span><\/p>\n<p><span style=\"color: #000000;\">O manuseamento de anf\u00edbios \u00e9 normalmente seguro, desde que o veneno n\u00e3o entre na circula\u00e7\u00e3o sangu\u00ednea atrav\u00e9s de ferimentos ou mucosa. Deve-se por isso lavar as m\u00e3os depois do contato com os animais.<\/span><\/p>\n<p style=\"text-align: right;\"><span style=\"font-size: 10pt; color: #333333;\">fontes:\u00a0<a style=\"color: #333333;\" href=\"http:\/\/www.biology-questions-and-answers.com\/amphibians.html\" target=\"_blank\" rel=\"noopener noreferrer\">biology-questions-and-answers.com<\/a> e <a style=\"color: #333333;\" href=\"http:\/\/Wikipedia.org\" target=\"_blank\" rel=\"noopener noreferrer\">Wikipedia.org<\/a><\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Anf\u00edbios: A palavra anf\u00edbio\u00a0tem\u00a0origem grega, significando &#8220;vida dupla&#8221;, devido a capacidade\u00a0de viver em ambiente terrestre e aqu\u00e1tico. Entretanto, dependem da<\/p>\n","protected":false},"author":1,"featured_media":1107,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"colormag_page_container_layout":"default_layout","colormag_page_sidebar_layout":"default_layout","_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":true,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"jetpack_post_was_ever_published":false},"categories":[135,21,27],"tags":[],"class_list":["post-1104","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-conservacao","category-herpetologia","category-zoologia"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Os Anf\u00edbios - Herpetologia. 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