{"id":19589,"date":"2021-04-29T18:14:24","date_gmt":"2021-04-29T16:14:24","guid":{"rendered":"https:\/\/almanimal.com\/?p=19589"},"modified":"2021-04-29T18:14:58","modified_gmt":"2021-04-29T16:14:58","slug":"combien-dyeux-a-une-araignee","status":"publish","type":"post","link":"https:\/\/almanimal.com\/fr\/terrariums\/arthropodes\/combien-dyeux-a-une-araignee\/","title":{"rendered":"T'es-tu d\u00e9j\u00e0 demand\u00e9 combien d'yeux poss\u00e8de une araign\u00e9e ?"},"content":{"rendered":"<p><strong>Savez-vous combien d\u2019yeux poss\u00e8de une araign\u00e9e ?<\/strong> Nous vous disons que la grande majorit\u00e9 a <strong>4 paires d&#039;yeux <\/strong>(certaines de tailles diff\u00e9rentes), mais, \u00e9tonnamment, les araign\u00e9es <strong>Ils n\u2019ont pas une bonne vision. <\/strong>En fait, il existe des araign\u00e9es compl\u00e8tement aveugles. De toutes les esp\u00e8ces,<strong> sauter<\/strong> C&#039;est l&#039;une de celles qui ont la meilleure vision et l&#039;araign\u00e9e-loup est capable de chasser la nuit. <strong>Les yeux des araign\u00e9es ressemblent \u00e0 ceux des humains !<\/strong><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Combien d&#039;yeux a une araign\u00e9e : le mythe des araign\u00e9es<\/h2>\n\n\n\n<p>Selon une l\u00e9gende, <strong>Arachn\u00e9<\/strong> C&#039;\u00e9tait une tisserande qualifi\u00e9e qui a d\u00e9fi\u00e9 les <strong>d\u00e9esse Ath\u00e9na<\/strong> \u00e0 un concours visant \u00e0 d\u00e9terminer qui \u00e9tait le plus habile des deux au fil. Ath\u00e9na, d\u00e9esse de l&#039;artisanat, r\u00e9alisa une tapisserie comm\u00e9morant sa victoire sur Pos\u00e9idon, qui fut \u00e0 l&#039;origine de la fondation de la ville d&#039;Ath\u00e8nes (en l&#039;honneur de la d\u00e9esse). De son c\u00f4t\u00e9, <strong>Arachn\u00e9 repr\u00e9sentait les infid\u00e9lit\u00e9s des dieux<\/strong> en une fabuleuse tapisserie qui ne fit qu&#039;irriter Ath\u00e9na elle-m\u00eame. Furieuse, la d\u00e9esse finit par d\u00e9truire la tapisserie et le m\u00e9tier \u00e0 tisser d&#039;Arachn\u00e9, et frappa la jeune femme, qui se suicida. <\/p>\n\n\n\n<p>La tradition raconte qu&#039;Ath\u00e9na eut piti\u00e9 de la jeune femme et aspergea de jus d&#039;aconit la corde o\u00f9 elle s&#039;\u00e9tait pendue. <strong>La corde s&#039;est transform\u00e9e en toile d&#039;araign\u00e9e et Arachn\u00e9 a fini par se transformer en araign\u00e9e.<\/strong> Que ce mythe sur la cr\u00e9ation des araign\u00e9es soit vrai ou faux, la seule chose qui est s\u00fbre est que les araign\u00e9es ont de nombreux yeux, un corps couvert de poils et qu&#039;elles tissent magistralement des toiles qui attirent leurs proies. <\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Caract\u00e9ristiques des araign\u00e9es<\/h2>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1000\" height=\"720\" src=\"https:\/\/almanimal.com\/wp-content\/uploads\/2021\/04\/arana.jpg.jpg\" alt=\"Les araign\u00e9es tisseuses d&#039;orbes n&#039;ont pas une bonne vision.\" class=\"wp-image-19594\" srcset=\"https:\/\/almanimal.com\/wp-content\/uploads\/2021\/04\/arana.jpg.jpg 1000w, https:\/\/almanimal.com\/wp-content\/uploads\/2021\/04\/arana.jpg-300x216.jpg 300w, https:\/\/almanimal.com\/wp-content\/uploads\/2021\/04\/arana.jpg-768x553.jpg 768w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/><\/figure><\/div>\n\n\n\n<p>Aux araign\u00e9es<strong> Il ne faut pas les confondre avec les insectes,<\/strong> Eh bien, en r\u00e9alit\u00e9, ce sont des arthropodes et ils appartiennent \u00e0 la classe <em>arachnide.<\/em> Les araign\u00e9es <strong>Ils produisent de la soie, <\/strong>avec lesquels elles tissent leurs filets ou toiles qui servent \u00e0 attirer leurs proies, mais aussi \u00e0 couvrir leurs abris.<strong> ils ont du poison<\/strong> qu&#039;ils utilisent pour paralyser leurs proies, qu&#039;ils tuent lentement dans la toile en liqu\u00e9fiant leurs entrailles. <\/p>\n\n\n\n<p>Ces arthropodes sont <strong>pr\u00e9dateurs solitaires.<\/strong> Il existe des donn\u00e9es indiquant qu&#039;il existe certains <strong>46 500 esp\u00e8ces d&#039;araign\u00e9es, et combien d&#039;yeux poss\u00e8de une araign\u00e9e ?<\/strong> Tout d\u00e9pend de l&#039;esp\u00e8ce d&#039;araign\u00e9e, comme nous le verrons plus tard, mais nous vous disons que <strong>ils ne sont pas tous dangereux.<\/strong> De loin <a href=\"https:\/\/almanimal.com\/fr\/terrariums\/arthropodes\/peur-des-araignees-ou-arachnophobie\/\">peur des araign\u00e9es<\/a> qui peuvent \u00eatre obtenus, nous vous disons qu&#039;en r\u00e9alit\u00e9, seuls certains groupes de ces arthropodes sont v\u00e9ritablement dangereux pour les humains. <\/p>\n\n\n\n<p>La pr\u00e9sence d&#039;araign\u00e9es chez vous est-elle une bonne chose\u00a0? On vous le dit. <strong>Une araign\u00e9e est capable de manger environ 2 000 insectes <\/strong>un an, donc oui, dans une certaine mesure, ce n&#039;est pas grave si vous avez une araign\u00e9e chez vous. Cela peut aider \u00e0 vous d\u00e9barrasser des nuisibles g\u00eanants. <a href=\"https:\/\/almanimal.com\/fr\/curiosites\/combien-de-temps-vit-une-mouche\/\">mouches<\/a> et les moustiques, en particulier pendant la <strong>mois d&#039;\u00e9t\u00e9.<\/strong> Avez-vous encore peur d&#039;eux\u00a0? Beaucoup de gens ont tendance \u00e0 les chasser de chez eux sans les attaquer. <\/p>\n\n\n\n<h2 class=\"wp-block-heading\">D\u00e9crypter le nombre d&#039;yeux d&#039;une araign\u00e9e<\/h2>\n\n\n\n<p>Avant de parler de <strong>combien d&#039;yeux a une araign\u00e9e<\/strong> tu devrais savoir que <strong>certaines araign\u00e9es sont aveugles <\/strong>et beaucoup d&#039;autres n&#039;ont pas une vision parfaite. Certaines esp\u00e8ces d&#039;araign\u00e9es ont<strong> des yeux qui leur permettent seulement de distinguer la lumi\u00e8re et l&#039;obscurit\u00e9.<\/strong> Cependant, il existe des araign\u00e9es qui voient tr\u00e8s bien et c&#039;est un grand avantage pour elles, car cela leur permet de chasser tr\u00e8s efficacement.<\/p>\n\n\n\n<p>Mais.., <strong>Combien d&#039;yeux a alors une araign\u00e9e ?<\/strong> La grande majorit\u00e9 a<strong> 8 yeux,<\/strong> Trop nombreux ! Ces couples ne sont pas vraiment utiles \u00e0 toutes les araign\u00e9es. D&#039;autres sp\u00e9cimens ont<strong> 6 yeux et certains en ont moins, <\/strong>Mais toujours en nombre pair. Et s&#039;ils ont tant d&#039;yeux, pourquoi ne voient-ils pas bien ? Est-ce la faute d&#039;Arachn\u00e9 ? <\/p>\n\n\n\n<p>Vous devez savoir que certaines esp\u00e8ces d\u2019araign\u00e9es<strong> Ils vivent dans des grottes ou sous terre<\/strong>, ceux-ci, par exemple,<strong> ils n&#039;ont pas d&#039;yeux du tout ;<\/strong> Ces araign\u00e9es n&#039;ont pas besoin d&#039;yeux pour voir. De plus, celles qui poss\u00e8dent plusieurs yeux n&#039;ont pas non plus une excellente vision. Les araign\u00e9es \u00e0 \u0153il nu ont g\u00e9n\u00e9ralement une mauvaise vue et se fient uniquement au toucher et \u00e0 l&#039;odorat pour attraper leurs proies.<\/p>\n\n\n\n<p>Et nous revenons au mythe d&#039;Arachn\u00e9 et commen\u00e7ons \u00e0 nous demander : et si cette histoire \u00e9tait vraie ? Nous vous posons cette question car les araign\u00e9es, contrairement aux insectes, ont <strong>des yeux tr\u00e8s semblables \u00e0 ceux des \u00eatres humains.<\/strong> Les yeux des araign\u00e9es ont <strong>une seule lentille<\/strong> (Tout comme les humains). Cependant, les yeux des humains et des araign\u00e9es ne fonctionnent pas de la m\u00eame mani\u00e8re. Les yeux des arthropodes sont limit\u00e9s et remplissent des fonctions sp\u00e9cifiques.<\/p>\n\n\n\n<p>Si vous vous demandez<strong> combien d&#039;yeux a une araign\u00e9e<\/strong> Il faut savoir que m\u00eame si la grande majorit\u00e9 poss\u00e8de 8 yeux, certains sp\u00e9cimens <strong>Ils peuvent avoir jusqu&#039;\u00e0 12 yeux. <\/strong>Comme vous pouvez le constater, avoir de nombreux yeux ne garantit pas une vision parfaite. Cependant, pour d\u00e9tecter proies et dangers, les araign\u00e9es poss\u00e8dent un syst\u00e8me ultra-d\u00e9velopp\u00e9 qui leur permet de rester vigilantes. <\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Le cas des araign\u00e9es sauteuses<\/h3>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large\"><img decoding=\"async\" width=\"1000\" height=\"720\" src=\"https:\/\/almanimal.com\/wp-content\/uploads\/2021\/04\/ojos.jpg.jpg\" alt=\"Combien de paires d&#039;yeux poss\u00e8de une araign\u00e9e sauteuse\u00a0? Elle en a huit et poss\u00e8de une excellente vision.\" class=\"wp-image-19592\" srcset=\"https:\/\/almanimal.com\/wp-content\/uploads\/2021\/04\/ojos.jpg.jpg 1000w, https:\/\/almanimal.com\/wp-content\/uploads\/2021\/04\/ojos.jpg-300x216.jpg 300w, https:\/\/almanimal.com\/wp-content\/uploads\/2021\/04\/ojos.jpg-768x553.jpg 768w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/><\/figure><\/div>\n\n\n\n<p>Nous vous avons d\u00e9j\u00e0 dit qu&#039;en termes de nombre d&#039;yeux, toutes les araign\u00e9es n&#039;ont pas le m\u00eame nombre ni la m\u00eame vision. C&#039;est le cas des <a href=\"https:\/\/es.wikipedia.org\/wiki\/Salticidae\" target=\"_blank\" rel=\"noreferrer noopener\">araign\u00e9es sauteuses<\/a>, <strong>la plus grande famille d&#039;araign\u00e9es<\/strong> (13% de toutes les esp\u00e8ces d&#039;araign\u00e9es). Leur vision est l&#039;une des meilleures et leurs huit yeux<strong> laissez-les bien se d\u00e9placer, chasser <\/strong>et effectuent la parade nuptiale et l&#039;accouplement. Ces araign\u00e9es sont des sauteuses agiles, comme leur nom l&#039;indique, mais aussi tr\u00e8s silencieuses. Toutes les araign\u00e9es sauteuses<strong> Ils ont 4 paires d&#039;yeux, <\/strong>mais celui du milieu est plus grand que les autres.<\/p>\n\n\n\n<p>Comme la plupart des arachnides, cette esp\u00e8ce <strong>ne peut pas tourner la t\u00eate,<\/strong> leurs huit yeux leur permettent de voir tout ce qui les entoure. Chez les araign\u00e9es sauteuses, il y a<strong> 2 types d&#039;yeux : ocelles et secondaires.<\/strong> Les ocelles sont ceux qui sont <strong>toujours impatient<\/strong> Ce sont les yeux principaux\u00a0; ils peuvent former des images gr\u00e2ce \u00e0 eux (certains arachnides ne d\u00e9tectent que la lumi\u00e8re ou l&#039;obscurit\u00e9). Les ocelles peuvent bouger et permettent aux sauteurs de voir ce qui se trouve devant eux.<strong> distance de 5 et 10 centim\u00e8tres.<\/strong><\/p>\n\n\n\n<p>Les <strong>yeux secondaires<\/strong> Elles sont beaucoup plus petites, d\u00e9pourvues de muscles et de mobilit\u00e9, et leurs yeux permettent d&#039;\u00e9largir leur champ de vision. Donc oui, une araign\u00e9e sauteuse. <strong>a une vision \u00e0 360\u00ba. <\/strong>Ces yeux permettent \u00e0 l\u2019araign\u00e9e de percevoir la profondeur et de calculer les distances. <\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Araign\u00e9es-loups ou tarentules<\/h3>\n\n\n\n<p>Le <strong>Les araign\u00e9es-loups sont en fait appel\u00e9es lycosides,<\/strong> Eh bien, son nom vient de <em>lycos <\/em>qui signifie loup en grec. Ils se caract\u00e9risent par <strong>\u00eatre au sol et creuser des fissures <\/strong>pour traquer leurs proies (elles les d\u00e9tectent gr\u00e2ce aux vibrations du sol). Il existe de nombreuses esp\u00e8ces d&#039;araign\u00e9es-loups, mais\u2026<strong> Savez-vous combien d\u2019yeux poss\u00e8de une araign\u00e9e-loup ?<\/strong> Elle en poss\u00e8de \u00e9galement 8, comme la plupart des araign\u00e9es, mais la r\u00e9partition de celles-ci est assez particuli\u00e8re.<\/p>\n\n\n\n<p>Cette esp\u00e8ce a <strong>2 yeux tr\u00e8s grands et frontaux <\/strong>(ils ont donc une bonne vue). Si nous analysons un sp\u00e9cimen d&#039;araign\u00e9e-loup, nous constatons que <strong>Ses yeux sont plac\u00e9s comme s&#039;ils formaient une croix.<\/strong> Nous vous disons que leurs yeux sont capables de r\u00e9fl\u00e9chir la lumi\u00e8re, c&#039;est pourquoi ils chassent g\u00e9n\u00e9ralement la nuit. <\/p>","protected":false},"excerpt":{"rendered":"<p>Sais-tu combien d'yeux poss\u00e8de une araign\u00e9e ? La grande majorit\u00e9 d'entre elles ont 4 paires d'yeux, mais les tisserands n'ont g\u00e9n\u00e9ralement pas une bonne vision.<\/p>","protected":false},"author":20,"featured_media":19593,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1445],"tags":[1547,1646,1889,1890,1546,1468,2643,1516],"class_list":["post-19589","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-artropodos","tag-aracnidos","tag-aranas","tag-aranas-mortiferas","tag-aranas-venenosas","tag-artropodos","tag-curiosidades","tag-curiosidades-sobre-las-aranas","tag-terrarios"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>\u00bfAlguna vez te has preguntado cu\u00e1ntos ojos tiene una ara\u00f1a?<\/title>\n<meta name=\"description\" content=\"\u00bfSabes cu\u00e1ntos ojos tiene una ara\u00f1a? 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