{"id":65320,"date":"2026-07-12T04:26:13","date_gmt":"2026-07-11T19:26:13","guid":{"rendered":"https:\/\/phys-edu.net\/wp\/?p=65320"},"modified":"2026-07-12T04:26:13","modified_gmt":"2026-07-11T19:26:13","slug":"la-arana-que-finge-ser-de-oro-un-cortejo-de-vida-o-muerte-y-su-misteriosa-cinta-blanca","status":"publish","type":"post","link":"https:\/\/phys-edu.net\/wp\/?p=65320&lang=es","title":{"rendered":"La ara\u00f1a que finge ser de oro: un cortejo de vida o muerte y su misteriosa cinta blanca"},"content":{"rendered":"<p style=\"text-align: center;\"><span style=\"color: #339966;\"><strong>Soy Ken Kuwako, entrenador de ciencias. Cada d\u00eda es un nuevo experimento.<\/strong><\/span><\/p>\n<p>Mientras caminaba por la calle, un llamativo patr\u00f3n de franjas negras y amarillas capt\u00f3 mi atenci\u00f3n. Era una ara\u00f1a con una presencia tan impactante que me oblig\u00f3 a mirarla dos veces. Se trataba de la <strong>Argiope bruennichi<\/strong>. Me hizo tanta ilusi\u00f3n encontrarla que saqu\u00e9 el m\u00f3vil y le hice una foto al instante.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-38028 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2021\/09\/0d2569a002f8c7cc7be386e684b99a3d.jpg\" alt=\"\" width=\"445\" height=\"411\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2021\/09\/0d2569a002f8c7cc7be386e684b99a3d.jpg 1028w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2021\/09\/0d2569a002f8c7cc7be386e684b99a3d-300x277.jpg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2021\/09\/0d2569a002f8c7cc7be386e684b99a3d-1024x946.jpg 1024w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2021\/09\/0d2569a002f8c7cc7be386e684b99a3d-768x710.jpg 768w\" sizes=\"auto, (max-width: 445px) 100vw, 445px\" \/><\/p>\n<p>Si la observas con atenci\u00f3n, ver\u00e1s que cuando permanece inm\u00f3vil en el centro de su tela junta los dos pares de patas delanteras y los dos pares traseros, estir\u00e1ndolos en l\u00ednea recta para formar una figura muy parecida a una <strong>X<\/strong>. Esta postura es una caracter\u00edstica t\u00edpica de las ara\u00f1as del g\u00e9nero Argiope. A simple vista parece que solo est\u00e1 quieta, pero en realidad adopta una pose perfectamente calculada.<\/p>\n<h3>\u00bfPor qu\u00e9 se llama &#8220;ara\u00f1a dorada&#8221;?<\/h3>\n<p>Existe una teor\u00eda que dice que su nombre proviene de que su cuerpo recuerda a una antigua moneda de oro. Aunque su aspecto pueda parecer intimidante, no supone ning\u00fan peligro para las personas. Se considera una ara\u00f1a venenosa, pero su veneno no representa una amenaza para los seres humanos, as\u00ed que tocarla no suele ser un problema. Adem\u00e1s, desempe\u00f1a un papel muy beneficioso al alimentarse de insectos que da\u00f1an cultivos y jardines, por lo que se la considera un <strong>insecto beneficioso<\/strong>. Es un buen ejemplo de por qu\u00e9 no conviene juzgar solo por la apariencia.<\/p>\n<h3>El macho se juega la vida al cortejar<\/h3>\n<p>Las hembras de Argiope pueden alcanzar entre 20 y 30 mm de longitud, mientras que los machos apenas llegan a medio cent\u00edmetro. La diferencia de tama\u00f1o es tan grande que cuesta creer que pertenezcan a la misma especie.<\/p>\n<p>Y su forma de vida tambi\u00e9n es sorprendente. Los machos no construyen su propia tela. Cuando alcanzan la madurez, se instalan en la red de una hembra y pasan all\u00ed el resto de su vida.<\/p>\n<p>Acercarse a ella, sin embargo, es todo un desaf\u00edo. Antes de aproximarse, el macho se coloca con mucho cuidado sobre uno de los hilos del borde de la tela y produce suaves vibraciones para &#8220;comprobar el \u00e1nimo&#8221; de la hembra. Si ella no lo acepta, la historia puede terminar de la peor manera: convertirse en su siguiente comida. Sin duda, una declaraci\u00f3n de amor en la que literalmente se juega la vida.<\/p>\n<h3>El misterioso dibujo blanco de la tela<\/h3>\n<p>Muchas especies del g\u00e9nero Argiope construyen en el centro de su tela una banda blanca en forma de zigzag, conocida como estabilimento o &#8220;banda de seda&#8221;. El ejemplar que encontr\u00e9 esta vez no la ten\u00eda, pero se cree que esta estructura ayuda a camuflar a la ara\u00f1a. Aun as\u00ed, su funci\u00f3n exacta sigue siendo un misterio y los cient\u00edficos todav\u00eda no tienen una respuesta definitiva.<\/p>\n<p>Lo m\u00e1s curioso es que la seda de esta banda refleja muy bien la luz ultravioleta. Algunos investigadores piensan que podr\u00eda atraer insectos haci\u00e9ndoles creer que se trata de una flor, mientras que otros creen que sirve para advertir a las aves de la presencia de la tela y evitar que la atraviesen volando.<\/p>\n<p>Resulta fascinante que una ara\u00f1a tan com\u00fan siga guardando secretos que la ciencia a\u00fan no ha logrado resolver. Ah\u00ed reside gran parte del encanto de la investigaci\u00f3n cient\u00edfica.<\/p>\n<h3>Consultas y colaboraciones<\/h3>\n<p>\u00a1Acerca la ciencia a tu vida diaria! En este sitio comparto experimentos sencillos que puedes hacer en casa y explicaciones f\u00e1ciles de entender para disfrutar a\u00fan m\u00e1s de la ciencia. \u00a1No dudes en explorar los distintos art\u00edculos!<\/p>\n<p>\u30fbEl contenido de Ciencia en el Cuaderno ya est\u00e1 disponible en formato libro. M\u00e1s informaci\u00f3n <a href=\"https:\/\/amzn.to\/42PMCEL\">aqu\u00ed<\/a>.<\/p>\n<p>\u30fbSi quieres saber m\u00e1s sobre Ken Kuwako, el autor del sitio, haz clic <a href=\"https:\/\/phys-edu.net\/wp\/?page_id=37\">aqu\u00ed<\/a>.<\/p>\n<p>\u30fbPara solicitudes de colaboraciones (art\u00edculos, conferencias, talleres de experimentos, asesor\u00eda para televisi\u00f3n, apariciones en medios, etc.), consulta <a href=\"https:\/\/phys-edu.net\/wp\/?page_id=188\">aqu\u00ed<\/a>.<\/p>\n<p><span class=\"s2\">\u30fb\u00a1Las \u00faltimas actualizaciones de los art\u00edculos se publican en <a href=\"https:\/\/x.com\/kuwako\">X<\/a>!<\/span><\/p>\n<p style=\"text-align: center;\"><a href=\"https:\/\/www.youtube.com\/user\/kkuwako\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-35048\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2020\/03\/3d9640dad7bc5538e76f92da1966ee19.jpg\" alt=\"\" width=\"30\" height=\"21\" \/><\/a><a href=\"https:\/\/www.youtube.com\/user\/kkuwako?sub_confirmation=1\">Canal Ciencia al Descubierto<\/a>: \u00a1v\u00eddeos de experimentos disponibles!<\/p>\n<h3><span style=\"color: #ff0000;\">NEW\u30007\/21\uff08\u706b\uff09\u767a\u58f2\uff01\u3000\u5206\u89e3\u554f\u984c\u96c6<\/span><\/h3>\r\n<ul>\r\n \t<li>\u300e<a href=\"https:\/\/phys-edu.net\/wp\/?p=64462\">\u9ad8\u6821\u5165\u8a66 \u5206\u89e3\u554f\u984c\u96c6 \u7406\u79d1<\/a>\u300f\uff08\u5b66\u7814\uff09\u2026\u96e3\u3057\u3044\u554f\u984c\u3082\u5c0f\u3055\u306a\u554f\u984c\u306b\u5206\u89e3\u3059\u308b\u3053\u3068\u3067\u3001\u554f\u984c\u3092\u89e3\u304f\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u305d\u3093\u306a\u5206\u89e3\u306e\u6280\u8853\u304c\u8eab\u306b\u3064\u304f\u3088\u3046\u306b\u6df1\u304f\u95a2\u308f\u308a\u3092\u6301\u3063\u3066\u4f5c\u308a\u307e\u3057\u305f\u3002\r\n<a href=\"https:\/\/phys-edu.net\/wp\/?p=64462\"><img class=\"alignnone  wp-image-65097 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/07\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-07-04-8.40.17.jpeg\" alt=\"\" width=\"172\" height=\"244\" \/><\/a><\/li>\r\n<\/ul>\r\n<h3>\uff17\u6708\u306e\u30a4\u30c1\u30aa\u30b7\u5b9f\u9a13\uff01<\/h3>\r\n<p style=\"text-align: center;\">\u590f\u3067\u30d7\u30b7\u30e5\u30c3\u3068\u723d\u3084\u304b\u5b9f\u9a13\uff01<\/p>\r\n<img class=\"alignnone  wp-image-64964 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2026\/06\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-06-30-4.31.58.jpeg\" alt=\"\" width=\"250\" height=\"310\" \/>\r\n<p style=\"text-align: center;\"><a href=\"https:\/\/phys-edu.net\/wp\/?p=206\">\u5c0f\u578b\u3067\u6301\u3061\u5e30\u308c\u308b\u3088\uff01\u30da\u30c3\u30c8\u30dc\u30c8\u30eb\u30ed\u30b1\u30c3\u30c8\u3092\u4f5c\u308d\u3046\uff01<\/a><\/p>\r\n\r\n<h3 style=\"text-align: left;\"><span style=\"font-size: medium;\"><b><strong>\u30c6\u30ec\u30d3\u756a\u7d44\u76e3\u4fee\u30fb\u30a4\u30d9\u30f3\u30c8\u7b49\u306e\u304a\u77e5\u3089\u305b<\/strong><\/b><\/span><\/h3>\r\n<ul>\r\n \t<li>\uff17\u6708\uff11\uff18\u65e5\uff08\u571f\uff09\uff12\uff16\uff1a\uff12\uff10\u301c\uff12\uff17\uff1a\uff12\uff10\u3000\u300c<a href=\"https:\/\/tvguide.myjcom.jp\/detail\/?channelType=2&amp;serviceCode=1056_32740&amp;eventId=59817&amp;programDate=20260718\">TIF\u3000presents\u3000ONE\u3000SONG\u3000FES.<\/a> \u300d\uff08\u30d5\u30b8\u30c6\u30ec\u30d3\uff09<\/li>\r\n \t<li>7\u670818\u65e5\uff08\u571f\uff09\u3000<a href=\"https:\/\/phys-edu.net\/wp\/?p=60018\">\u6559\u54e1\u5411\u3051\u5b9f\u9a13\u8b1b\u7fd2\u4f1a\u300c\u30ca\u30ea\u30ab\u30ab\u30b5\u30a4\u30a8\u30f3\u30b9\u30a2\u30ab\u30c7\u30df\u30fc\u300d\u306e\u8b1b\u5e2b\u3092\u3057\u307e\u3059<\/a>\u3002\u304a\u4f1a\u3044\u3057\u307e\u3057\u3087\u3046\u3002<\/li>\r\n \t<li>\uff17\u6708\uff13\uff10\u65e5\uff08\u6c34\uff09\u3000\u76e3\u4fee\u3057\u305f\u30c6\u30ec\u30d3\u756a\u7d44\u653e\u9001\u4e88\u5b9a<\/li>\r\n \t<li>12\u670826\u65e5\uff08\u571f\uff09\u3000<a href=\"https:\/\/phys-edu.net\/wp\/?p=64825\">\u30ca\u30ea\u30ab\u30b5\u30a4\u30a8\u30f3\u30b9\u30a2\u30ab\u30c7\u30df\u30fc\uff08\u6559\u54e1\u5411\u3051\u5b9f\u9a13\u8b1b\u7fd2\u4f1a\uff09\u958b\u50ac<\/a><\/li>\r\n<\/ul>\r\n<h3><b>\u66f8\u7c4d<strong>\u306e\u304a\u77e5\u3089\u305b<\/strong><\/b><\/h3>\r\n<ul>\r\n \t<li>\u300e\u5927\u4eba\u306e\u305f\u3081\u306e\u9ad8\u6821\u7269\u7406\u5fa9\u7fd2\u5e33\u300f\uff08\u8b1b\u8ac7\u793e\uff09\u2026\u4e00\u822c\u5411\u3051\u306b\u65e5\u5e38\u306e\u7269\u7406\u306b\u3064\u3044\u3066\u516c\u5f0f\u3092\u5143\u306b\u7d10\u89e3\u304d\u307e\u3057\u305f\u3002<a href=\"https:\/\/phys-edu.net\/wp\/?p=1827\">\u7279\u8a2d\u30b5\u30a4\u30c8<\/a>\u3067\u306f\u5b9f\u9a13\u3092\u591a\u6570\u7d39\u4ecb\u3057\u3066\u3044\u307e\u3059\u3002<strong>\u203b\u5897\u5237\u304c\u304b\u304b\u308a\uff16\u5237\u3068\u306a\u308a\u307e\u3057\u305f\uff082026\/02\/01\uff09\r\n<img class=\"alignnone wp-image-10940 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2013\/12\/0811159a99f69eeff1a357e3daed84e0-300x262.jpg\" sizes=\"(max-width: 220px) 100vw, 220px\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2013\/12\/0811159a99f69eeff1a357e3daed84e0-300x262.jpg 300w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2013\/12\/0811159a99f69eeff1a357e3daed84e0.jpg 311w\" alt=\"\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8 2014-07-05 0.43.51\" width=\"220\" height=\"192\" \/><\/strong><\/li>\r\n \t<li>\u300e\u304d\u3081\u308b!\u5171\u901a\u30c6\u30b9\u30c8 \u7269\u7406\u57fa\u790e \u6539\u8a02\u7248\u300f\uff08\u5b66\u7814\uff09\u2026\u3000\u9ad8\u6821\u7269\u7406\u306e\u53c2\u8003\u66f8\u3067\u3059\u3002\u30a4\u30e9\u30b9\u30c8\u3092\u591a\u304f\u3057\u3066\u30a4\u30e1\u30fc\u30b8\u304c\u6301\u3066\u308b\u3088\u3046\u306b\u63cf\u304d\u307e\u3057\u305f\u3002\u6388\u696d\u306b\u3064\u3044\u3066\u3044\u3051\u306a\u3044\u3001\u7269\u7406\u304c\u82e6\u624b\u3001\u305d\u3093\u306a\u751f\u5f92\u306b\u304a\u3059\u3059\u3081\u3067\u3059\u3002<a href=\"https:\/\/phys-edu.net\/wp\/?p=45322\">\u7279\u8a2d\u30b5\u30a4\u30c8<\/a>\u306f\u3053\u3061\u3089\u3002\r\n<img class=\"alignnone wp-image-45718 aligncenter\" src=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2024\/04\/dc1da64a8c8d1422062b4867c0607a1c.jpg\" sizes=\"(max-width: 184px) 100vw, 184px\" srcset=\"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2024\/04\/dc1da64a8c8d1422062b4867c0607a1c.jpg 756w, https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2024\/04\/dc1da64a8c8d1422062b4867c0607a1c-300x269.jpg 300w\" alt=\"\" width=\"184\" height=\"165\" \/><\/li>\r\n<\/ul>\r\n<h3><span style=\"text-align: center;\">\u5404\u7a2eSNS\uff08\u66f4\u65b0\u60c5\u5831\u3092\u304a\u5c4a\u3051\uff01\uff09<\/span><\/h3>\r\n<p style=\"text-align: center;\">\u3010\u65e5\u672c\u8a9e\u3011<a style=\"text-align: center;\" href=\"https:\/\/twitter.com\/kuwako\">X(Twitter)<\/a><span style=\"text-align: center;\">\uff0f<\/span><a style=\"text-align: center;\" href=\"https:\/\/www.instagram.com\/science_seeds\/\">instagram<\/a><span style=\"text-align: center;\">\uff0f<\/span><a style=\"text-align: center;\" href=\"https:\/\/www.facebook.com\/kuwakolab\/\">Facebook<\/a>\u3000\u3010\u82f1\u8a9e\u3011<a style=\"text-align: center;\" href=\"https:\/\/bsky.app\/profile\/kagakunoneta.bsky.social\">BlueSky<\/a><span style=\"text-align: center;\">\uff0f<\/span><a style=\"text-align: center;\" href=\"https:\/\/www.threads.net\/@science_seeds?hl=ja\">Threads<\/a><\/p>\r\n\r\n<h3 style=\"text-align: center;\"><strong>Explore<\/strong><\/h3>\r\n<ul>\r\n \t<li><a href=\"https:\/\/phys-edu.net\/wp\/?page_id=30764\">\u697d\u3057\u3044\u5b9f\u9a13<\/a>\u2026\u304a\u5b50\u3055\u3093\u3068\u4e00\u7dd2\u306b\u5922\u4e2d\u306b\u306a\u308c\u308b\u30a4\u30c1\u30aa\u30b7\u306e\u79d1\u5b66\u5b9f\u9a13\u3092\u591a\u6570\u7d39\u4ecb\u3057\u3066\u3044\u307e\u3059\u3002\u307e\u305f\u3001\u9ad8\u6821\u7269\u7406\u306e\u7406\u89e3\u3092\u6df1\u3081\u308b\u305f\u3081\u306e\u52d5\u753b\u6559\u6750\u3082\u7528\u610f\u3057\u307e\u3057\u305f\u3002<\/li>\r\n \t<li><a href=\"https:\/\/phys-edu.net\/wp\/?page_id=798\">\u7406\u79d1\u306e\u6559\u6750<\/a>\u2026 \u7406\u79d1\u6559\u5e2b\u3092\u30d0\u30c3\u30af\u30a2\u30c3\u30d7\uff01\u6388\u696d\u306e\u8cea\u3092\u9ad8\u3081\u3001\u6e96\u5099\u3092\u52b9\u7387\u5316\u3059\u308b\u305f\u3081\u306e\u9078\u308a\u3059\u3050\u308a\u306e\u6559\u6750\u3092\u7d39\u4ecb\u3057\u3066\u3044\u307e\u3059\u3002<\/li>\r\n \t<li><a href=\"https:\/\/www.youtube.com\/c\/kkuwako\">Youtube<\/a>\u2026\u79d1\u5b66\u5b9f\u9a13\u7b49\u306e\u52d5\u753b\u3092\u914d\u4fe1\u3057\u3066\u3044\u307e\u3059\u3002<\/li>\r\n \t<li><a href=\"https:\/\/music.youtube.com\/playlist?list=PLoK4ZvKN9S2NgpYIochcQs0aL-vrRB_Qw\">\u79d1\u5b66\u30e9\u30b8\u30aa<\/a>\u00a0\u2026\u79d1\u5b66\u30c8\u30d4\u30c3\u30af\u3092\u307b\u307c\u6bce\u65e5\u914d\u4fe1\u4e2d\uff01AI\u6280\u8853\u3092\u99c6\u4f7f\u3057\u3066\u4f5c\u6210\u3057\u305f\u300c\u8033\u3067\u697d\u3057\u3080\u79d1\u5b66\u300d\u3092\u304a\u5c4a\u3051\u3057\u307e\u3059\u3002<\/li>\r\n \t<li><a href=\"http:\/\/phys-edu.net\/wp\/?page_id=20940\">\u8b1b\u6f14<\/a>\u00a0\u2026\u5168\u56fd\u5404\u5730\u3067\u5b9f\u9a13\u8b1b\u7fd2\u4f1a\u30fb\u30b5\u30a4\u30a8\u30f3\u30b9\u30b7\u30e7\u30fc\u7b49\u3092\u884c\u3063\u3066\u3044\u307e\u3059\u3002<\/li>\r\n \t<li><a href=\"http:\/\/phys-edu.net\/wp\/?page_id=37\">About<\/a>\u00a0\u2026\u300c\u79d1\u5b66\u306e\u30cd\u30bf\u5e33\u300d\u306e\u30b3\u30f3\u30bb\u30d7\u30c8\u3084\u3001\u904b\u55b6\u8005\u3067\u3042\u308b\u6851\u5b50\u7814\u306e\u30d7\u30ed\u30d5\u30a3\u30fc\u30eb\u30fb\u60f3\u3044\u3092\u307e\u3068\u3081\u3066\u3044\u307e\u3059\u3002<\/li>\r\n \t<li><a href=\"https:\/\/phys-edu.net\/wp\/?page_id=188\">\u304a\u554f\u3044\u5408\u308f\u305b<\/a>\u00a0\u2026\u5b9f\u9a13\u6559\u5ba4\u306e\u3054\u4f9d\u983c\u3001\u57f7\u7b46\u30fb\u8b1b\u6f14\u306e\u76f8\u8ac7\u3001\u79d1\u5b66\u76e3\u4fee\u7b49\u306f\u3053\u3061\u3089\u306e\u30d5\u30a9\u30fc\u30e0\u304b\u3089\u304a\u5bc4\u305b\u304f\u3060\u3055\u3044\u3002<\/li>\r\n<\/ul>","protected":false},"excerpt":{"rendered":"<p>Soy Ken Kuwako, entrenador de ciencias. Cada d\u00eda es un nuevo experimento. Mientras caminaba por la calle, un l [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":38028,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_sitemap_exclude":false,"_sitemap_priority":"","_sitemap_frequency":"","sns_share_botton_hide":"","vkExUnit_sns_title":"","vkexunit_cta_each_option":"","_lightning_design_setting":{"layout":"default"},"footnotes":"","jetpack_post_was_ever_published":false},"categories":[1492],"tags":[],"class_list":["post-65320","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-science-es"],"jetpack_featured_media_url":"https:\/\/phys-edu.net\/wp\/wp-content\/uploads\/2021\/09\/0d2569a002f8c7cc7be386e684b99a3d.jpg","jetpack-related-posts":[{"id":65240,"url":"https:\/\/phys-edu.net\/wp\/?p=65240&lang=es","url_meta":{"origin":65320,"position":0},"title":"Ese grito de &#8220;\u00a1Ahhh!&#8221; escond\u00eda a un h\u00e9roe secreto: el misterio de la ara\u00f1a viajera","author":"\u6851\u5b50 \u7814","date":"2026\u5e747\u67089\u65e5","format":false,"excerpt":"Soy Ken Kuwako, Science Trainer. 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