{"id":1905,"date":"2024-03-25T01:02:11","date_gmt":"2024-03-25T01:02:11","guid":{"rendered":"https:\/\/www.chilefauna.cl\/?p=1905"},"modified":"2024-03-25T01:16:59","modified_gmt":"2024-03-25T01:16:59","slug":"appendicularia-de-chile","status":"publish","type":"post","link":"https:\/\/www.chilefauna.cl\/index.php\/appendicularia-de-chile\/","title":{"rendered":"Appendicularia de Chile"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Phylum&nbsp;<strong><a href=\"https:\/\/www.chilefauna.cl\/index.php\/chordata-de-chile\/\">Chordata<\/a><\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Investigador(es) a cargo:&nbsp;<\/strong>Sergio Palma<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Citar como:&nbsp;<\/strong>Palma, S.<em>&nbsp;Appendicularia de Chile<\/em>. ChileFauna. Recuperado el [inserte fecha de consulta] de [URL]<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u2014<\/p>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\"><strong><strong>Appendicularia<\/strong><\/strong>&nbsp;Fol, 1872<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">La clase Appendicularia pertenece al phylum Chordata, subphylum Tunicata, y comprende organismos zooplanct\u00f3nicos que en estado adulto conservan la notocorda. A nivel mundial se conoce alrededor de 70 especies en todos los oc\u00e9anos. El cuerpo est\u00e1 constituido por el tronco de forma ovalada (1-5 mm de longitud) y la cola que es 2 a 3 veces m\u00e1s larga que el cuerpo. La cola tiene un cord\u00f3n nervioso y varias bandas musculares que generan corrientes de agua que dirigen y concentran los alimentos hacia la boca. Esta \u00faltima se abre a la cavidad far\u00edngea, con dos aberturas branquiales que terminan en dos espir\u00e1culos. Estos organismos tienen el sistema de filtraci\u00f3n m\u00e1s especializado de los herb\u00edvoros planct\u00f3nicos y se alimentan de bacterias, part\u00edculas peque\u00f1as de fitoplancton (pico- y nanoplancton &lt;200 \u00b5m) y carbono org\u00e1nico particulado. La alimentaci\u00f3n se realiza a trav\u00e9s de una compleja estructura filtrante de mucopolisac\u00e1ridos denominada \u201ccasa\u201d en cuyo interior viven y secretan en intervalos de 2 a 4 h. Cuando la disponibilidad tr\u00f3fica es abundante, el sistema de filtraci\u00f3n se obstruye por fecas y restos org\u00e1nicos (detritos) y se elimina, pudiendo generar hasta 15 casas diarias. Las casas eliminadas son ricas en materia org\u00e1nica y de alto valor energ\u00e9tico para otros zooplancteres, como cop\u00e9podos, euf\u00e1usidos, y larvas de peces, crust\u00e1ceos y poliquetos. Las apendicularias son hermafroditas, a excepci\u00f3n de <em>Oikopleura (Vexillaria) dioica<\/em>, y sus g\u00f3nadas ocupan una parte importante del tronco y liberan los gametos al medio ambiente.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Por su alimentaci\u00f3n herb\u00edvora, las apendicularias se distribuyen en aguas superficiales c\u00e1lidas y templadas de todos los oc\u00e9anos, pero hay escasas especies en aguas profundas (&lt;1.000 m). Son abundantes en ecosistemas de surgencia de alta productividad biol\u00f3gica, como el Sistema de la Corriente de Humboldt, donde pueden ser parte de la dieta de peces pel\u00e1gicos peque\u00f1os de importancia econ\u00f3mica, como sardina (<em>Clupea (Strangomera) bentincki<\/em>), sardina espa\u00f1ola (<em>Sardinops sagax<\/em>) y anchoveta (<em>Engraulis ringens<\/em>).<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u2014<\/p>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\"><strong><strong>Appendicularia<\/strong>&nbsp;de Chile<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">En aguas chilenas estos organismos han sido escasamente estudiados a pesar de su importancia en los ciclos tr\u00f3ficos asociados al fitoplancton. Su identificaci\u00f3n espec\u00edfica y distribuci\u00f3n geogr\u00e1fica se ha realizado solo en la zona norte, entre Arica (18\u00ba23\u2019S) y Coquimbo (31\u00ba00\u2019S) y hasta 100 millas de la costa, donde se identificaron 15 especies de las familias Fritillaridae y Oikopleuridae, siendo <em>Oikopleura (Coecaria) longicauda <\/em>la especie predominante, por sus caracter\u00edsticas euritermas y eurihalinas.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>N\u00famero de taxones en Chile:\u00a0<\/strong>15 (especies v\u00e1lidas)<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Orden <strong>Copelata <\/strong>Haeckel, 1866<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Familia <strong><a href=\"https:\/\/www.chilefauna.cl\/index.php\/fritillariidae-de-chile\/\">Fritillariidae<\/a><\/strong> Lohmann, 1915 | <strong>7 taxones<\/strong><\/li>\n\n\n\n<li>Familia <strong><a href=\"https:\/\/www.chilefauna.cl\/index.php\/oikopleuridae-de-chile\/\">Oikopleuridae<\/a><\/strong> Lohmann, 1896 | <strong>8 taxones<\/strong><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u2014<\/p>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\"><strong>Referencias<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Aravena, G. &amp; S. Palma. (2002). <\/strong>Taxonomic identification of appendicularians collected in the epipelagic waters off northern Chile (Tunicata, Appendicularia). <em>Revista Chilena de Historia Natural<\/em>, <em>75<\/em>:307-325.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Grunewald, A., R. Qui\u00f1ones &amp; S. N\u00fa\u00f1ez. (1998).<\/strong> Distribuci\u00f3n espacial y flujos de materia asociados a apendicularias (Chordata, Tunicata) en la zona centro-sur de Chile. <em>Gayana Oceanolog\u00eda<\/em> (Chile), <em>6<\/em>:11-23.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Palma, S. &amp; K. Kaiser. (1993). <\/strong><em>Plancton marino de aguas chilenas<\/em>. Ediciones Universitarias de Valpara\u00edso, Valpara\u00edso, 151 pp<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Phylum&nbsp;Chordata Investigador(es) a cargo:&nbsp;Sergio Palma Citar como:&nbsp;Palma, S.&nbsp;Appendicularia de Chile. ChileFauna. Recuperado el [inserte fecha de consulta] de [URL] \u2014 Appendicularia&nbsp;Fol, 1872 La clase Appendicularia pertenece al phylum Chordata, subphylum Tunicata, y comprende organismos zooplanct\u00f3nicos que en estado adulto conservan la notocorda. A nivel mundial se conoce alrededor de 70 especies en todos los oc\u00e9anos. &hellip;<\/p>\n<p class=\"read-more\"> <a class=\"\" href=\"https:\/\/www.chilefauna.cl\/index.php\/appendicularia-de-chile\/\"> <span class=\"screen-reader-text\">Appendicularia de Chile<\/span> Leer m\u00e1s \u00bb<\/a><\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","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":"set","footnotes":""},"categories":[8],"tags":[],"class_list":["post-1905","post","type-post","status-publish","format-standard","hentry","category-especies"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Appendicularia de Chile - ChileFauna<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.chilefauna.cl\/index.php\/appendicularia-de-chile\/\" \/>\n<meta property=\"og:locale\" content=\"es_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Appendicularia de Chile - ChileFauna\" \/>\n<meta property=\"og:description\" content=\"Phylum&nbsp;Chordata Investigador(es) a cargo:&nbsp;Sergio Palma Citar como:&nbsp;Palma, S.&nbsp;Appendicularia de Chile. ChileFauna. Recuperado el [inserte fecha de consulta] de [URL] \u2014 Appendicularia&nbsp;Fol, 1872 La clase Appendicularia pertenece al phylum Chordata, subphylum Tunicata, y comprende organismos zooplanct\u00f3nicos que en estado adulto conservan la notocorda. 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