{"id":10916,"date":"2021-10-18T23:10:34","date_gmt":"2021-10-19T02:10:34","guid":{"rendered":"https:\/\/biologo.com.br\/bio\/?p=10916"},"modified":"2023-01-26T15:12:30","modified_gmt":"2023-01-26T18:12:30","slug":"oncas-sem-floresta","status":"publish","type":"post","link":"https:\/\/biologo.com.br\/bio\/oncas-sem-floresta\/","title":{"rendered":"On\u00e7as sem floresta"},"content":{"rendered":"\n<p><span style=\"font-size: 14pt; color: #000000;\"><span style=\"color: #3366ff;\"><strong>On\u00e7as sem floresta: <\/strong><span style=\"color: #000000;\">perda de vegeta\u00e7\u00e3o nativa na Amaz\u00f4nia, onde vive quase metade das on\u00e7as-pintadas do mundo, coloca em risco o maior reservat\u00f3rio gen\u00e9tico da esp\u00e9cie.<br><\/span><\/span><\/span><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span style=\"font-family: 'courier new', courier, monospace; color: #000000;\"><strong><span style=\"font-size: 24pt;\">On\u00e7as sem floresta<\/span><\/strong><\/span><\/h2>\n\n\n\n<p><span style=\"font-size: 8pt; color: #000000;\">18\/10\/2021 :: Ricardo Zorzetto. Pesquisa Fapesp<\/span><\/p>\n\n\n\n<p class=\"has-drop-cap <style&gt; body { background-color: lightblue; } h1 color: white; text-align: center; p font-family: verdana; font-size: 20px; <\/style&gt;\">De 2016 a 2019, a Amaz\u00f4nia perdeu 32 mil quil\u00f4metros quadrados (km2) de vegeta\u00e7\u00e3o nativa \u2013 o equivalente a 0,6% da \u00e1rea ocupada pelo bioma no territ\u00f3rio brasileiro \u2013 por causa de queimadas e desmatamento, indicam dados do Instituto Nacional de Pesquisas Espaciais (Inpe). Em consequ\u00eancia do recrudescimento recente na degrada\u00e7\u00e3o da floresta, observada principalmente no Arco do Desmatamento, nas por\u00e7\u00f5es sul e leste da Amaz\u00f4nia, cerca de 1.400 on\u00e7as-pintadas podem ter morrido ou sido desalojadas das \u00e1reas em que viviam.<\/p>\n\n\n\n<figure class=\"wp-block-image alignright wp-image-1169\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"167\" data-attachment-id=\"1169\" data-permalink=\"https:\/\/biologo.com.br\/bio\/especies-ameacadas\/jaguar\/\" data-orig-file=\"https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2016\/08\/Jaguar.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=\"Jaguar\" data-image-description=\"&lt;p&gt;Esp\u00e9cies amea\u00e7adas. Jaguar macho (Panthera onca palustris) &lt;\/p&gt;\n\" data-image-caption=\"&lt;p&gt;Jaguar macho (Panthera onca palustris) &lt;\/p&gt;\n\" data-large-file=\"https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2016\/08\/Jaguar.jpg?fit=631%2C351&amp;ssl=1\" src=\"https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2016\/08\/Jaguar.jpg?resize=300%2C167&#038;ssl=1\" alt=\"Esp\u00e9cies amea\u00e7adas - On\u00e7as sem floresta\" class=\"wp-image-1169\" srcset=\"https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2016\/08\/Jaguar.jpg?resize=300%2C167&amp;ssl=1 300w, https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2016\/08\/Jaguar.jpg?w=631&amp;ssl=1 631w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><figcaption class=\"wp-element-caption\"><span style=\"font-size: 10pt; color: #000000;\">Jaguar macho (<em>Panthera onca palustris<\/em>)<\/span><\/figcaption><\/figure>\n\n\n\n<p><span style=\"color: #000000;\">\u201cEsse n\u00famero \u00e9 um sinal de alerta e merece aten\u00e7\u00e3o\u201d, afirma o veterin\u00e1rio Ronaldo Morato, coordenador do Centro Nacional de Pesquisa e Conserva\u00e7\u00e3o de Mam\u00edferos Carn\u00edvoros (Cenap) do Instituto Chico Mendes de Conserva\u00e7\u00e3o da Biodiversidade (ICMBio) e l\u00edder do trabalho, apoiado pela FAPESP, que chegou a esse c\u00e1lculo. \u201cEle representa 1,8% da popula\u00e7\u00e3o de on\u00e7as que se calcula existir na Amaz\u00f4nia brasileira.\u201d<\/span><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><span style=\"font-size: 14pt; color: #0000ff;\"><a style=\"color: #0000ff;\" href=\"https:\/\/biologo.com.br\/bio\/fauna-brasileira\/\">Fauna brasileira<\/a><\/span><\/li>\n\n\n\n<li><span style=\"font-size: 14pt; color: #0000ff;\"><a style=\"color: #0000ff;\" href=\"https:\/\/biologo.com.br\/bio\/salvem-as-oncas\/\">Salvem as on\u00e7as<\/a><\/span><\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image aligncenter\"><a href=\"https:\/\/biologo.com.br\/bio\/dia-nacional-da-onca-pintada\/\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" width=\"631\" height=\"351\" data-attachment-id=\"8275\" data-permalink=\"https:\/\/biologo.com.br\/bio\/dia-nacional-da-onca-pintada\/dia-nacional-da-onca-pintada-2\/\" data-orig-file=\"https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2020\/11\/Dia-Nacional-da-Onca-Pintada.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=\"Dia-Nacional-da-On\u00e7a-Pintada\" data-image-description=\"&lt;p&gt;Dia Nacional da On\u00e7a PintadaDia Nacional da On\u00e7a Pintada. Pesando entre 60 e 160 quilos, a on\u00e7a-pintada \u00e9 o maior felino das Am\u00e9ricas e o terceiro maior do mundo, atr\u00e1s apenas do tigre e do le\u00e3o. No entanto, ela que \u00e9 uma das esp\u00e9cies-s\u00edmbolo do Brasil, ilustrando a c\u00e9dula de 50 reais, tamb\u00e9m \u00e9 uma das mais amea\u00e7adas. Com sua popula\u00e7\u00e3o em decl\u00ednio, ao celebrar o Dia Nacional da On\u00e7a-Pintada, que acontece neste domingo (29), \u00e9 preciso destacar as medidas fundamentais para a sua preserva\u00e7\u00e3o. 29 DE NOVEMBRO&lt;\/p&gt;\n\" data-image-caption=\"&lt;p&gt;Foto: Ary Nascimento Bassous\/Wikimedia Commons&lt;\/p&gt;\n\" data-large-file=\"https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2020\/11\/Dia-Nacional-da-Onca-Pintada.jpg?fit=631%2C351&amp;ssl=1\" src=\"https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2020\/11\/Dia-Nacional-da-Onca-Pintada.jpg?resize=631%2C351&#038;ssl=1\" alt=\"Dia Nacional da On\u00e7a Pintada\" class=\"wp-image-8275\" srcset=\"https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2020\/11\/Dia-Nacional-da-Onca-Pintada.jpg?w=631&amp;ssl=1 631w, https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2020\/11\/Dia-Nacional-da-Onca-Pintada.jpg?resize=300%2C167&amp;ssl=1 300w\" sizes=\"auto, (max-width: 631px) 100vw, 631px\" \/><\/a><figcaption class=\"wp-element-caption\"><a href=\"https:\/\/biologo.com.br\/bio\/dia-nacional-da-onca-pintada\/\"><span style=\"font-size: 8pt; color: #000000;\">Foto: Ary Nascimento Bassous\/Wikimedia Commons<\/span><\/a><\/figcaption><\/figure>\n\n\n\n<p><span style=\"color: #000000;\">Publicada em 25 de junho na revista&nbsp;<em>Conservation Science and Practice<\/em>, essa estimativa \u00e9 ainda imperfeita. Conhecer o n\u00famero exato de on\u00e7as mortas, feridas ou deslocadas pela a\u00e7\u00e3o de motosserras ou do fogo exigiria a captura e marca\u00e7\u00e3o pr\u00e9via de cada indiv\u00edduo para que, depois, sua localiza\u00e7\u00e3o fosse acompanhada por meio de colares rastre\u00e1veis por GPS e armadilhas fotogr\u00e1ficas.<\/span><\/p>\n\n\n\n<p><span style=\"color: #000000;\"> Ante a impossibilidade de realizar esse tipo de rastreamento em uma \u00e1rea t\u00e3o vasta e de deslocamento complexo como a Amaz\u00f4nia, o bi\u00f3logo Jorge Saraiva de Menezes, da equipe de Morato, calculou o n\u00famero aproximado de felinos mortos ou expulsos naquele per\u00edodo cruzando dados de \u00e1reas que perderam mais de 50% da cobertura nativa com informa\u00e7\u00f5es a respeito da concentra\u00e7\u00e3o de on\u00e7as na regi\u00e3o.<\/span><\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span style=\"font-size: 12pt; font-family: 'courier new', courier, monospace; color: #000000;\"><strong>Ref\u00fagio amea\u00e7ado<\/strong><\/span><\/h3>\n\n\n\n<figure class=\"wp-block-image alignleft\"><a href=\"https:\/\/biologo.com.br\/bio\/todas-as-manhas-do-mundo\/\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" data-attachment-id=\"2254\" data-permalink=\"https:\/\/biologo.com.br\/bio\/todas-as-manhas-do-mundo\/onca-pintada-pantanal-lawrence-wahba\/\" data-orig-file=\"https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2017\/03\/On%C3%A7a-pintada-Pantanal-Lawrence-Wahba.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=\"On\u00e7a-pintada-Pantanal-Lawrence-Wahba\" data-image-description=\"&lt;p&gt;On\u00e7a pintada Pantanal Lawrence Wahba&lt;\/p&gt;\n\" data-image-caption=\"&lt;p&gt;On\u00e7a pintada no Pantanal. by Lawrence Wahba&lt;\/p&gt;\n\" data-large-file=\"https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2017\/03\/On%C3%A7a-pintada-Pantanal-Lawrence-Wahba.jpg?fit=631%2C351&amp;ssl=1\" src=\"https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2017\/03\/On%C3%A7a-pintada-Pantanal-Lawrence-Wahba.jpg?resize=150%2C150&#038;ssl=1\" alt=\"On\u00e7a pintada Pantanal Lawrence Wahba\" class=\"wp-image-2254\" srcset=\"https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2017\/03\/On%C3%A7a-pintada-Pantanal-Lawrence-Wahba.jpg?resize=150%2C150&amp;ssl=1 150w, https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2017\/03\/On%C3%A7a-pintada-Pantanal-Lawrence-Wahba.jpg?zoom=2&amp;resize=150%2C150&amp;ssl=1 300w, https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2017\/03\/On%C3%A7a-pintada-Pantanal-Lawrence-Wahba.jpg?zoom=3&amp;resize=150%2C150&amp;ssl=1 450w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" \/><\/a><\/figure>\n\n\n\n<p><span style=\"color: #000000;\">A Amaz\u00f4nia \u00e9 hoje o principal ref\u00fagio de on\u00e7as no mundo. H\u00e1 alguns anos, o bi\u00f3logo polon\u00eas W\u0142odzimierz J\u0119drzejewski, do Centro de Ecologia do Instituto Venezuelano de Pesquisas Cient\u00edficas, e colaboradores usaram informa\u00e7\u00f5es de dezenas de armadilhas fotogr\u00e1ficas instaladas em 80 locais para calcular o total de on\u00e7as-pintadas nas Am\u00e9ricas. De acordo com a estimativa, apresentada em 2018 na revista&nbsp;<em>PLOS ONE<\/em>, existiriam hoje por volta de 173 mil on\u00e7as.<\/span><\/p>\n\n\n\n<p><span style=\"color: #000000;\">Exclusivas das Am\u00e9ricas, continente no qual entraram ap\u00f3s se separarem h\u00e1 3 milh\u00f5es de anos de uma linhagem ancestral de grandes felinos na \u00c1sia, as on\u00e7as-pintadas (<em>Panthera onca<\/em>) est\u00e3o entre os maiores carn\u00edvoros do mundo. Podem alcan\u00e7ar quase 2 metros de comprimento (do focinho ao in\u00edcio da cauda) e pesar 150 quilos.<\/span><\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter\"><a href=\"https:\/\/biologo.com.br\/bio\/amazonia-selvagem\/\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" width=\"631\" height=\"351\" data-attachment-id=\"4744\" data-permalink=\"https:\/\/biologo.com.br\/bio\/amazonia-selvagem\/amazonia-selvagem\/\" data-orig-file=\"https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2018\/08\/amazonia-selvagem.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=\"amazonia-selvagem\" data-image-description=\"&lt;p&gt;Amaz\u00f4nia Selvagem &amp;#8211; On\u00e7a pintada&lt;\/p&gt;\n\" data-image-caption=\"&lt;p&gt;Amaz\u00f4nia Selvagem &amp;#8211; On\u00e7a pintada&lt;\/p&gt;\n\" data-large-file=\"https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2018\/08\/amazonia-selvagem.jpg?fit=631%2C351&amp;ssl=1\" src=\"https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2018\/08\/amazonia-selvagem.jpg?resize=631%2C351&#038;ssl=1\" alt=\"Amaz\u00f4nia Selvagem - On\u00e7as sem floresta\" class=\"wp-image-4744\" srcset=\"https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2018\/08\/amazonia-selvagem.jpg?w=631&amp;ssl=1 631w, https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2018\/08\/amazonia-selvagem.jpg?resize=300%2C167&amp;ssl=1 300w\" sizes=\"auto, (max-width: 631px) 100vw, 631px\" \/><\/a><figcaption class=\"wp-element-caption\"><span style=\"font-size: 10pt;\"><a href=\"https:\/\/biologo.com.br\/bio\/amazonia-selvagem\/\">Amaz\u00f4nia Selvagem<\/a><\/span><\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image aligncenter\"><img data-recalc-dims=\"1\" decoding=\"async\" src=\"https:\/\/i0.wp.com\/media0.giphy.com\/media\/3ohzdRhLCSK1DEu1JC\/giphy.gif?w=800&#038;ssl=1\" alt=\"Cabeza-de-jaguar GIFs - Get the best GIF on GIPHY\"\/><\/figure>\n\n\n\n<p><span style=\"color: #000000;\">Em tamanho e for\u00e7a, perdem apenas para dois outros felinos evolutivamente pr\u00f3ximos: o le\u00e3o (<em>Panthera leo<\/em>), hoje encontrado na \u00c1frica subsaariana e em parte da \u00cdndia; e o tigre (<em>Panthera tigris<\/em>), que sobrevive em pequenas por\u00e7\u00f5es da \u00c1sia. As on\u00e7as s\u00e3o corredoras velozes, atingem at\u00e9 80 quil\u00f4metros por hora, al\u00e9m de ex\u00edmias nadadoras e h\u00e1beis escaladoras de \u00e1rvores. Na natureza, vivem de 10 a 15 anos e podem ser encontradas em campos e savanas, mas preferem \u00e1reas de mata fechada, pr\u00f3ximas de cursos d\u2019\u00e1gua e distantes da presen\u00e7a humana.<\/span><\/p>\n\n\n\n<p><span style=\"color: #000000;\">Por influ\u00eancia de fatores ambientais, como cobertura florestal, temperatura, disponibilidade de alimentos e altera\u00e7\u00f5es na paisagem, as on\u00e7as existentes hoje est\u00e3o distribu\u00eddas de modo irregular por uma \u00e1rea de 8,9 milh\u00f5es de km2, metade do territ\u00f3rio que ocupavam no in\u00edcio do s\u00e9culo XX, quando eram encontradas dos Estados Unidos \u00e0 Argentina. <\/span><\/p>\n\n\n\n<p><span style=\"color: #000000;\">Segundo os c\u00e1lculos de J\u0119drzejewski, nove pa\u00edses da Am\u00e9rica do Sul, todos contendo trechos da floresta amaz\u00f4nica, concentrariam 93% das on\u00e7as (cerca de 161 mil animais). No Brasil, onde recebe ainda o nome de jaguar, jaguaret\u00ea e cangu\u00e7u, estaria o maior contingente: 86,8 mil exemplares \u2013 nove em cada 10 deles na Amaz\u00f4nia.<\/span><\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong><span style=\"color: #000000; font-family: 'courier new', courier, monospace; font-size: 12pt;\">Felinos<\/span><\/strong><\/h4>\n\n\n\n<figure class=\"wp-block-image alignleft\"><a href=\"https:\/\/biologo.com.br\/bio\/caca-ilegal-ameaca-fauna\/\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" data-attachment-id=\"7968\" data-permalink=\"https:\/\/biologo.com.br\/bio\/caca-ilegal-ameaca-fauna\/caca-ilegal-ameaca-fauna\/\" data-orig-file=\"https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2020\/10\/Caca-ilegal-ameaca-fauna.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=\"Ca\u00e7a-ilegal-amea\u00e7a-fauna\" data-image-description=\"&lt;p&gt;Ca\u00e7a ilegal amea\u00e7a fauna. On\u00e7a pintada no riacho, rio&lt;\/p&gt;\n\" data-image-caption=\"&lt;p&gt;Ana Cotta&lt;\/p&gt;\n\" data-large-file=\"https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2020\/10\/Caca-ilegal-ameaca-fauna.jpg?fit=631%2C351&amp;ssl=1\" src=\"https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2020\/10\/Caca-ilegal-ameaca-fauna.jpg?resize=150%2C150&#038;ssl=1\" alt=\"Ca\u00e7a ilegal amea\u00e7a fauna\" class=\"wp-image-7968\" srcset=\"https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2020\/10\/Caca-ilegal-ameaca-fauna.jpg?resize=150%2C150&amp;ssl=1 150w, https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2020\/10\/Caca-ilegal-ameaca-fauna.jpg?zoom=2&amp;resize=150%2C150&amp;ssl=1 300w, https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2020\/10\/Caca-ilegal-ameaca-fauna.jpg?zoom=3&amp;resize=150%2C150&amp;ssl=1 450w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" \/><\/a><\/figure>\n\n\n\n<p><span style=\"color: #000000;\">A situa\u00e7\u00e3o da esp\u00e9cie \u00e9 menos grave que a do le\u00e3o e do tigre, dos quais restam, respectivamente, 20 mil e 4 mil exemplares na natureza. Mas n\u00e3o permite descuidos. Bi\u00f3logos, geneticistas e especialistas em conserva\u00e7\u00e3o consideram que apenas uma pequena propor\u00e7\u00e3o dos indiv\u00edduos \u2013 no caso dos felinos, algo em torno de 10% da popula\u00e7\u00e3o \u2013 seja, de fato, capaz de procriar e contribuir para a manuten\u00e7\u00e3o da esp\u00e9cie.<\/span><\/p>\n\n\n\n<p><span style=\"color: #000000;\"> \u00c9 a chamada popula\u00e7\u00e3o efetiva, um conceito gen\u00e9tico que equivale aproximadamente ao conjunto de animais que colaboram reprodutivamente ao longo das gera\u00e7\u00f5es. Em algumas \u00e1reas de vegeta\u00e7\u00e3o fragmentada, esse n\u00famero pode ser muito baixo (por exemplo, menos de 10 indiv\u00edduos), o que gera problemas para a manuten\u00e7\u00e3o da diversidade gen\u00e9tica no local.<\/span><\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter\"><a href=\"https:\/\/biologo.com.br\/bio\/o-custo-do-desmatamento\/\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" width=\"631\" height=\"351\" data-attachment-id=\"6017\" data-permalink=\"https:\/\/biologo.com.br\/bio\/o-custo-do-desmatamento\/o-custo-do-desmatamento\/\" data-orig-file=\"https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2019\/05\/O-custo-do-desmatamento.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=\"O-custo-do-desmatamento\" data-image-description=\"&lt;p&gt;Grupo Especializado de Fiscaliza\u00e7\u00e3o (GEF) do Ibama combate desmatamento e garimpo de cassiterita na Terra Ind\u00edgena Tenharim do Igarap\u00e9 Preto, Amazonas&lt;br \/&gt;\nFoto: Vin\u00edcius Mendon\u00e7a\/Ibama&lt;\/p&gt;\n\" data-image-caption=\"&lt;p&gt;Grupo Especializado de Fiscaliza\u00e7\u00e3o (GEF) do Ibama combate desmatamento e garimpo de cassiterita na Terra Ind\u00edgena Tenharim do Igarap\u00e9 Preto, Amazonas&lt;\/p&gt;\n&lt;p&gt;Foto: Vin\u00edcius Mendon\u00e7a\/Ibama&lt;\/p&gt;\n\" data-large-file=\"https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2019\/05\/O-custo-do-desmatamento.jpg?fit=631%2C351&amp;ssl=1\" src=\"https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2019\/05\/O-custo-do-desmatamento.jpg?resize=631%2C351&#038;ssl=1\" alt=\"O custo do desmatamento\" class=\"wp-image-6017\" srcset=\"https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2019\/05\/O-custo-do-desmatamento.jpg?w=631&amp;ssl=1 631w, https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2019\/05\/O-custo-do-desmatamento.jpg?resize=300%2C167&amp;ssl=1 300w\" sizes=\"auto, (max-width: 631px) 100vw, 631px\" \/><\/a><figcaption class=\"wp-element-caption\"><span style=\"font-size: 10pt;\"><a href=\"https:\/\/biologo.com.br\/bio\/o-custo-do-desmatamento\/\">O custo do desmatamento <\/a><span style=\"color: #000000;\">&#8211; Grupo do Ibama combate desmatamento e garimpo em Terra Ind\u00edgena na Amaz\u00f4nia<\/span><\/span><\/figcaption><\/figure>\n\n\n\n<p><span style=\"color: #000000;\">Em 2017, a <a href=\"https:\/\/biologo.com.br\/bio\/iucn\/\">IUCN<\/a> classificou a on\u00e7a-pintada na categoria \u201cquase amea\u00e7ada de extin\u00e7\u00e3o\u201d por causa de uma redu\u00e7\u00e3o de 20% a 25% em sua popula\u00e7\u00e3o global em 21 anos. Em uma avalia\u00e7\u00e3o de 2013, Morato e colaboradores haviam estimado que em 27 anos o n\u00famero de on\u00e7as no Brasil teria encolhido 30% e redu\u00e7\u00e3o semelhante \u00e9 projetada para as pr\u00f3ximas tr\u00eas d\u00e9cadas. A principal amea\u00e7a \u00e0 esp\u00e9cie, indicam v\u00e1rios estudos, \u00e9 a perda e a fragmenta\u00e7\u00e3o de \u00e1reas de vegeta\u00e7\u00e3o nativa, em geral decorrente de atividades humanas como expans\u00e3o agr\u00edcola, minera\u00e7\u00e3o, constru\u00e7\u00e3o de hidrel\u00e9tricas e abertura de estradas.<\/span><\/p>\n\n\n\n<p><span style=\"color: #000000;\">On\u00e7as s\u00e3o predadores solit\u00e1rios que precisam de grandes espa\u00e7os para ca\u00e7ar e sobreviver. Em um grande estudo sobre o deslocamento desses felinos, o ec\u00f3logo Jeffrey Thompson, pesquisador da Associa\u00e7\u00e3o Guyra e do Instituto Saite, ambos no Paraguai, e 60 colaboradores, v\u00e1rios deles do Brasil, acompanharam por anos o trajeto percorrido por 111 on\u00e7as em sete pa\u00edses das Am\u00e9ricas e 13 ambientes.<\/span><\/p>\n\n\n\n<h5 class=\"wp-block-heading\"><span style=\"font-family: 'courier new', courier, monospace; font-size: 12pt;\"><span style=\"color: #000000;\">Especialistas<\/span><span style=\"font-size: 8pt; color: #ffffff;\"> &#8211; <\/span><\/span><span style=\"font-family: 'courier new', courier, monospace; font-size: 8pt; color: #ffffff;\"><strong>On\u00e7as sem floresta<\/strong><\/span><\/h5>\n\n\n\n<p><span style=\"color: #000000;\">Os resultados desse trabalho, um dos \u00faltimos assinados pelo zo\u00f3logo paulista Peter Crawshaw Junior, um dos maiores especialistas em on\u00e7a do pa\u00eds, morto em 26 de abril deste ano em consequ\u00eancia da Covid-19, foram publicados em 7 de julho na revista&nbsp;<em>Current Biology<\/em>. <\/span><\/p>\n\n\n\n<figure class=\"wp-block-image alignright\"><a href=\"https:\/\/biologo.com.br\/bio\/dia-internacional-da-onca-pintada\/\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"167\" data-attachment-id=\"5358\" data-permalink=\"https:\/\/biologo.com.br\/bio\/dia-internacional-da-onca-pintada\/dia-internacional-da-onca-pintada\/\" data-orig-file=\"https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2018\/11\/Dia-Internacional-da-On%C3%A7a-Pintada.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=\"Dia-Internacional-da-On\u00e7a-Pintada\" data-image-description=\"&lt;p&gt;Dia Internacional da On\u00e7a-Pintada&lt;\/p&gt;\n\" data-image-caption=\"&lt;p&gt;Dia Internacional da On\u00e7a-Pintada. by Julie Larsen Mahe &amp;#8211; WCS&lt;\/p&gt;\n\" data-large-file=\"https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2018\/11\/Dia-Internacional-da-On%C3%A7a-Pintada.jpg?fit=631%2C351&amp;ssl=1\" src=\"https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2018\/11\/Dia-Internacional-da-On%C3%A7a-Pintada.jpg?resize=300%2C167&#038;ssl=1\" alt=\"Dia Internacional da On\u00e7a-Pintada - 29 de novembro\" class=\"wp-image-5358\" srcset=\"https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2018\/11\/Dia-Internacional-da-On%C3%A7a-Pintada.jpg?resize=300%2C167&amp;ssl=1 300w, https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2018\/11\/Dia-Internacional-da-On%C3%A7a-Pintada.jpg?w=631&amp;ssl=1 631w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><figcaption class=\"wp-element-caption\"><span style=\"font-size: 10pt;\"><a href=\"https:\/\/biologo.com.br\/bio\/dia-internacional-da-onca-pintada\/\">Dia Internacional da On\u00e7a-Pintada<\/a><\/span><\/figcaption><\/figure>\n\n\n\n<p><span style=\"color: #000000;\">Eles indicam que a \u00e1rea m\u00e9dia de que as on\u00e7as precisam para viver \u2013 a chamada \u00e1rea de vida \u2013 varia muito de um bioma para outro. \u00c9 menor, da ordem de 60 km2 a 200 km2, em ambientes com vegeta\u00e7\u00e3o mais densa e abund\u00e2ncia de alimentos, como o Pantanal ou os Lhanos, como s\u00e3o chamadas as plan\u00edcies de savanas da Col\u00f4mbia e da Venezuela, e um pouco maior, por volta de 250 km2 na Amaz\u00f4nia. Pode, no entanto, chegar aos 400 km2 no Cerrado e na Caatinga, onde a disponibilidade de alimento \u00e9 menor e a presen\u00e7a humana maior.<\/span><\/p>\n\n\n\n<p><span style=\"color: #000000;\">Antes da chegada do colonizador europeu, havia on\u00e7as em todo o territ\u00f3rio do que viria a ser o Brasil, afirmam os estudiosos do felino. Com a derrubada de matas, por\u00e9m, elas foram varridas de uma vasta faixa que vai do Nordeste ao Sul do pa\u00eds. Desapareceram dos Pampas e hoje sua distribui\u00e7\u00e3o \u00e9 restrita a um ter\u00e7o do Cerrado, 20% da Caatinga e menos de 10% da Mata Atl\u00e2ntica \u2013 calcula-se que, nos dois \u00faltimos biomas, s\u00f3 existam algumas centenas de indiv\u00edduos. Apenas a Amaz\u00f4nia brasileira comporta on\u00e7as em cerca de 80% de sua \u00e1rea.<\/span><\/p>\n\n\n\n<h6 class=\"wp-block-heading\"><span style=\"font-family: 'courier new', courier, monospace; font-size: 12pt;\"><strong><span style=\"color: #000000;\">Mata Atl\u00e2ntica <\/span><\/strong><\/span><\/h6>\n\n\n\n<figure class=\"wp-block-image alignright\"><a href=\"https:\/\/biologo.com.br\/bio\/salvem-as-oncas\/\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" data-attachment-id=\"823\" data-permalink=\"https:\/\/biologo.com.br\/bio\/salvem-as-oncas\/onca\/\" data-orig-file=\"https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2016\/06\/onca.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=\"onca\" data-image-description=\"&lt;p&gt;On\u00e7a Pintada&lt;\/p&gt;\n\" data-image-caption=\"&lt;p&gt;Salvem as on\u00e7as&lt;\/p&gt;\n\" data-large-file=\"https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2016\/06\/onca.jpg?fit=631%2C351&amp;ssl=1\" src=\"https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2016\/06\/onca.jpg?resize=150%2C150&#038;ssl=1\" alt=\"Salvem as on\u00e7as\" class=\"wp-image-823\" srcset=\"https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2016\/06\/onca.jpg?resize=150%2C150&amp;ssl=1 150w, https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2016\/06\/onca.jpg?zoom=2&amp;resize=150%2C150&amp;ssl=1 300w, https:\/\/i0.wp.com\/biologo.com.br\/bio\/wp-content\/uploads\/2016\/06\/onca.jpg?zoom=3&amp;resize=150%2C150&amp;ssl=1 450w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" \/><\/a><\/figure>\n\n\n\n<p><span style=\"color: #000000;\">\u201cA Mata Atl\u00e2ntica representa um caso extremo de preju\u00edzos da a\u00e7\u00e3o humana para a diversidade gen\u00e9tica das on\u00e7as\u201d, assegura o bi\u00f3logo Eduardo Eizirik, da Pontif\u00edcia Universidade Cat\u00f3lica do Rio Grande do Sul (PUC-RS), um dos pioneiros no pa\u00eds no estudo da gen\u00e9tica do felino. A primeira an\u00e1lise das popula\u00e7\u00f5es do animal em diferentes pa\u00edses das Am\u00e9ricas, conduzida por Eizirik em 2001, ajudou a confirmar que as on\u00e7as atuais pertencem a uma \u00fanica esp\u00e9cie e sem subdivis\u00f5es regionais profundas. <\/span><\/p>\n\n\n\n<p><span style=\"color: #000000;\">Mais recentemente, a bi\u00f3loga Taiana Haag, trabalhando sob a orienta\u00e7\u00e3o de Eizirik, comparou as caracter\u00edsticas gen\u00e9ticas de quatro popula\u00e7\u00f5es de on\u00e7a distribu\u00eddas por remanescentes de Mata Atl\u00e2ntica entre os estados de S\u00e3o Paulo e do Rio Grande do Sul e constatou que elas haviam perdido diversidade. A popula\u00e7\u00e3o de cada fragmento se tornou mais homog\u00eanea rapidamente. Em menos de 10 gera\u00e7\u00f5es, os indiv\u00edduos de uma mesma popula\u00e7\u00e3o ficaram geneticamente mais semelhantes entre si, enquanto os animais de um fragm<\/span>ento acumularam diferen\u00e7as aleat\u00f3rias que os tornaram mais distintos daqueles das outras \u00e1reas.<\/p>\n\n\n\n<p>\u201cA perda de diversidade deixa esses grupos mais suscet\u00edveis a doen\u00e7as e reduz a probabilidade de que seus integrantes se adaptem a transforma\u00e7\u00f5es ambientais\u201d, explica a bi\u00f3loga Caroline Sartor, da equipe da PUC-RS.<\/p>\n\n\n\n<h6 class=\"wp-block-heading\"><span style=\"font-size: 8pt; color: #000000; font-family: 'courier new', courier, monospace;\"><strong>Artigos cient\u00edficos:<\/strong><\/span><\/h6>\n\n\n\n<p><span style=\"font-size: 8pt; color: #000000;\">MENEZES, J. F. S.&nbsp;<em>et al.<\/em>&nbsp;<a style=\"color: #000000;\" href=\"https:\/\/conbio.onlinelibrary.wiley.com\/doi\/full\/10.1111\/csp2.477\" target=\"_blank\" rel=\"noopener\">Deforestation, fires, and lack of governance are displacing thousands of jaguars in Brazilian Amazon<\/a>.&nbsp;<strong>Conservation Science and Practice<\/strong>. 26 mai. 2021.<\/span><br><span style=\"font-size: 8pt; color: #000000;\">J\u0118DRZEJEWSKI, W.&nbsp;<em>et al.<\/em>&nbsp;<a style=\"color: #000000;\" href=\"https:\/\/journals.plos.org\/plosone\/article?id=10.1371\/journal.pone.0194719\" target=\"_blank\" rel=\"noopener\">Estimating large carnivore populations at global scale based on spatial predictions of density and distribution \u2013 Application to the jaguar (Panthera onca)<\/a>.&nbsp;<strong>PLOS One<\/strong>. 26 mar. 2018.<\/span><\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><span style=\"font-size: 8pt;\"><span style=\"color: #000000;\"><span style=\"color: #333333;\">Fonte: <\/span><a style=\"color: #000000;\" title=\"Ref\u00fagio amea\u00e7ado\" href=\"https:\/\/revistapesquisa.fapesp.br\/refugio-ameacado\/\" target=\"_blank\" rel=\"noopener\">Ref\u00fagio amea\u00e7ado<\/a>\/<a style=\"color: #000000;\" href=\"https:\/\/revistapesquisa.fapesp.br\/\" target=\"_blank\" rel=\"noopener noreferrer\">Revista Pesquisa Fapesp<\/a> <\/span><a style=\"color: #999999;\" href=\"https:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0\/\" target=\"_blank\" rel=\"noopener noreferrer\">CC BY-ND 4.0<\/a><\/span><\/h4>\n\n\n\n<p><\/p>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>On\u00e7as sem floresta: perda de vegeta\u00e7\u00e3o nativa na Amaz\u00f4nia, onde vive quase metade das on\u00e7as-pintadas do mundo, coloca em risco<\/p>\n","protected":false},"author":1,"featured_media":1169,"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_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"On\u00e7as sem floresta: perda de vegeta\u00e7\u00e3o nativa na Amaz\u00f4nia, onde vive quase metade das on\u00e7as-pintadas do mundo, coloca em risco o maior reservat\u00f3rio gen\u00e9tico da esp\u00e9cie.","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}},"categories":[25,22,27],"tags":[],"class_list":["post-10916","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-mamiferos","category-meioambiente","category-zoologia"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>On\u00e7as sem floresta - maior reservat\u00f3rio gen\u00e9tico da esp\u00e9cie amea\u00e7ado - Amaz\u00f4nia<\/title>\n<meta name=\"description\" content=\"Perda de vegeta\u00e7\u00e3o nativa na Amaz\u00f4nia coloca em risco o maior reservat\u00f3rio gen\u00e9tico da esp\u00e9cie. 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