{"id":5781,"date":"2019-08-13T13:18:50","date_gmt":"2019-08-13T16:18:50","guid":{"rendered":"https:\/\/biologo.com.br\/bio\/?p=5781"},"modified":"2026-02-10T22:16:29","modified_gmt":"2026-02-11T01:16:29","slug":"os-tubaroes","status":"publish","type":"post","link":"https:\/\/biologo.com.br\/bio\/os-tubaroes\/","title":{"rendered":"Os Tubar\u00f5es"},"content":{"rendered":"\n

Os Tubar\u00f5es:<\/strong><\/span> Enquanto muitos pensam que os tubar\u00f5es s\u00e3o “m\u00e1quinas de matar”, somos n\u00f3s humanos que realmente estamos assassinando milhares desses animais todos os anos. <\/span><\/p>\n\n\n\n

Na verdade esses animais s\u00e3o muito diferentes da imagem que temos deles. Novos estudos t\u00eam indicado que muitas esp\u00e9cies de tubar\u00f5es possuem poderosas habilidades cognitivas, habilidade social e curiosidade. <\/span><\/p>\n\n\n\n

Os Tubar\u00f5es<\/strong><\/span><\/h2>\n\n\n\n

A<\/span><\/strong><\/span> rela\u00e7\u00e3o entre as massas corporais e cerebrais dos tubar\u00f5es \u00e9 semelhante \u00e0 dos mam\u00edferos e de muitos vertebrados avan\u00e7ados, embora pequena comparada com a do homem.<\/span><\/p>\n\n\n\n

Mas n\u00e3o \u00e9 s\u00f3 pela intelig\u00eancia que temos que respeitar e preservar esses peixes. Como predador de topo, o tubar\u00e3o exerce um important\u00edssimo papel no equil\u00edbrio das esp\u00e9cies marinhas.<\/span><\/p>\n\n\n\n

Estima-se que 100 milh\u00f5es de tubar\u00f5es s\u00e3o mortos por pessoas a cada ano, devido \u00e0 pesca comercial e recreativa.<\/span><\/p>\n\n\n\n

\"Basking<\/figure>\n\n\n\n

<\/p>\n\n\n\n

\n

De acordo com o grupo de especialistas em tubar\u00f5es da IUCN, 24% das esp\u00e9cies est\u00e3o sob amea\u00e7a de extin\u00e7\u00e3o. <\/span><\/p>\n<\/blockquote>\n\n\n\n

Principais esp\u00e9cies de tubar\u00e3o<\/span><\/h3>\n\n\n\n
\"\"<\/a>
Grande tubar\u00e3o branco<\/a><\/span><\/figcaption><\/figure>\n\n\n\n

\u2022 Tubar\u00e3o-branco<\/a><\/span><\/span><\/strong> (Carcharodon carcharias<\/em>)<\/span> – <\/strong>O maior peixe predador nos oceanos. Os tubar\u00f5es brancos s\u00e3o bem conhecidos por seu tamanho e fama de assassino. Mas s\u00e3o raros os ataques com perda de vida humana. Por outro lado, o n\u00famero desses animais nos oceanos \u00e9 cada vez menor.<\/span><\/p>\n\n\n\n

\u2022 Tubar\u00e3o-cobra<\/a><\/span><\/span> (Chlamydoselachus anguineus<\/em>)<\/span> – <\/span><\/strong>Esta \u00e9 uma esp\u00e9cie muito interessante da fam\u00edlia Chlamydoselachidae, que cont\u00e9m apenas o tubar\u00e3o-cobra como esp\u00e9cie n\u00e3o-extinta. \u00c9 um dos animais mais antigos do planeta que ainda persistem. <\/span><\/p>\n\n\n\n

\"\"<\/a>
Tubar\u00e3o-cobra (Chlamydoselachus anguineus<\/em>)<\/span><\/a><\/strong><\/span><\/figcaption><\/figure>\n\n\n\n

\u2022 Tubar\u00e3o da Groenl\u00e2ndia<\/span><\/a> (Somniosus microcephalus<\/em>)<\/span> –<\/strong> Um dos maiores do mundo, chegando a medir mais de 6,5 metros. \u00c9 a esp\u00e9cie de vertebrado com a maior expectativa de vida conhecida com uma m\u00e9dia de 272 anos (As lentes oculares sugerem que uma f\u00eamea morreu com cerca de 392 anos). <\/span><\/p>\n\n\n\n

\u2022 Tubar\u00e3o de Gal\u00e1pagos<\/a><\/span><\/span>  (Carcharhinus galapagensis) <\/em><\/span><\/strong>– H\u00e1 alguns anos, a esp\u00e9cie foi considerada extinta no Brasil. Relatos hist\u00f3ricos apontam que grandes popula\u00e7\u00f5es viviam no arquip\u00e9lago de S\u00e3o Pedro e S\u00e3o Paulo.<\/span><\/p>\n\n\n\n

\"\"<\/a>
Tubar\u00e3o-duende<\/a>\u00a0<\/span><\/figcaption><\/figure>\n\n\n\n

\u2022 Tubar\u00e3o-duende<\/span><\/span><\/a> (Mitsukurina owstoni<\/em>) <\/span><\/strong>– Este animal de pele rosa tem um perfil distinto. <\/span>Esp\u00e9cie de porte grande, variando entre 3 e 4 m de comprimento quando adulto, embora possa crescer consideravelmente mais. Vive em \u00e1guas profundas.<\/span><\/p>\n\n\n\n

\u2022 Galha-branca<\/a><\/strong><\/span><\/span> (Carcharhinus longimanus)<\/em><\/strong> <\/span>– Grande animal que habita mares temperados, tropicais e quentes. Uma das tr\u00eas esp\u00e9cies mais abundantes dos oceanos. Tamb\u00e9m \u00e9 uma das que mais atacam humanos por engano.<\/span><\/p>\n\n\n\n

\u2022 Tubar\u00e3o-tigre<\/span><\/span><\/a> (Galeocerdo cuvier)<\/span> – <\/em><\/span><\/strong>Um dos mais temidos. \u00c9 respons\u00e1vel por uma grande parte dos incidentes fatais com mordidas de tubar\u00e3o, todavia ataques a mergulhadores n\u00e3o s\u00e3o muito comuns.<\/span><\/p>\n\n\n\n

Salvem os Tubar\u00f5es<\/span><\/a><\/h3>\n\n\n\n
\"Isurus<\/a>
Isurus oxyrinchus<\/em><\/span><\/a><\/figcaption><\/figure>\n\n\n\n

\u2022 Tubar\u00e3o-mako<\/a><\/span><\/span> (<\/span>Isurus oxyrinchus)<\/span>  <\/i><\/strong>– \u00c9 considerado o mais r\u00e1pido, podendo chegar aos 88 km\/h em curtas dist\u00e2ncias, ultrapassado em velocidade apenas pelo atum dourado e pelo marlim.<\/span><\/p>\n\n\n\n

\u2022 Tubar\u00e3o-Lim\u00e3o<\/a><\/span><\/span> (Negaprion brevirostris)<\/em><\/span><\/strong> – Podem crescer at\u00e9 3,4 metros de comprimento. No Brasil pode ser encontrado em Fernando de Noronha e no Atol das Rocas. N\u00e3o s\u00e3o considerados uma amea\u00e7a significativa para humanos.<\/span><\/p>\n\n\n\n

\u2022 Tubar\u00e3o-martelo<\/span><\/span><\/a><\/strong> (Sphyrna spp.)<\/strong><\/em><\/span> – Os tubar\u00f5es mais amea\u00e7ados de extin\u00e7\u00e3o. Facilmente identific\u00e1veis pelas proje\u00e7\u00f5es em ambos os lados da cabe\u00e7a, onde se localizam os olhos e as narinas.<\/span><\/p>\n\n\n\n

\u2022 O tubar\u00e3o-baleia<\/a><\/span><\/span> (Rhincodon typus<\/em>)<\/span><\/strong> n\u00e3o \u00e9 somente a maior esp\u00e9cie de tubar\u00e3o. \u00c9 o maior peixe vivo e, o maior vertebrado n\u00e3o minguante existente.<\/span><\/p>\n\n\n\n

\"Shark<\/figure>\n\n\n\n

<\/p>\n\n\n\n

>> veja tamb\u00e9m: Document\u00e1rio Evolu\u00e7\u00e3o dos tubar\u00f5es<\/a><\/span><\/span><\/span><\/p>\n","protected":false},"excerpt":{"rendered":"

Os Tubar\u00f5es: Enquanto muitos pensam que os tubar\u00f5es s\u00e3o “m\u00e1quinas de matar”, somos n\u00f3s humanos que realmente estamos assassinando milhares<\/p>\n","protected":false},"author":1,"featured_media":5823,"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":false,"_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":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"jetpack_post_was_ever_published":false},"categories":[4,135,19,27],"tags":[],"class_list":["post-5781","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-biologiamarinha","category-conservacao","category-ictiologia","category-zoologia"],"yoast_head":"\nOs Tubar\u00f5es: Principais esp\u00e9cies, v\u00eddeos e informa\u00e7\u00f5es - Bi\u00f3logo<\/title>\n<meta name=\"description\" content=\"Enquanto muitos pensam que os tubar\u00f5es s\u00e3o "m\u00e1quinas de matar", somos n\u00f3s humanos que realmente estamos assassinando milhares desses animais. 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