{"id":3062,"date":"2023-03-10T15:08:54","date_gmt":"2023-03-10T14:08:54","guid":{"rendered":"https:\/\/captaindarwin.org\/?p=3062"},"modified":"2023-06-14T11:13:27","modified_gmt":"2023-06-14T09:13:27","slug":"du-mollusque-sur-lestran","status":"publish","type":"post","link":"https:\/\/captaindarwin.org\/fr\/2023\/03\/10\/du-mollusque-sur-lestran\/","title":{"rendered":"Du mollusque sur l&rsquo;estran"},"content":{"rendered":"<p>[et_pb_section fb_built=\u00a0\u00bb1&Prime; disabled_on=\u00a0\u00bbon|off|off\u00a0\u00bb admin_label=\u00a0\u00bbHeader Blog DESKTOP\u00a0\u00bb _builder_version=\u00a0\u00bb4.16&Prime; background_image=\u00a0\u00bbhttps:\/\/captaindarwin.org\/wp-content\/uploads\/2021\/11\/Background_20211126.jpg\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_row _builder_version=\u00a0\u00bb4.19.5&Prime; global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_column type=\u00a0\u00bb4_4&Prime; _builder_version=\u00a0\u00bb4.16&Prime; global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_image src=\u00a0\u00bbhttps:\/\/captaindarwin.org\/wp-content\/uploads\/2022\/01\/BlogDarwin.png\u00a0\u00bb align=\u00a0\u00bbcenter\u00a0\u00bb _builder_version=\u00a0\u00bb4.19.5&Prime; max_width=\u00a0\u00bb40%\u00a0\u00bb custom_margin=\u00a0\u00bb-90px||-20px||false|false\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][\/et_pb_image][\/et_pb_column][\/et_pb_row][\/et_pb_section][et_pb_section fb_built=\u00a0\u00bb1&Prime; disabled_on=\u00a0\u00bboff|on|on\u00a0\u00bb admin_label=\u00a0\u00bbHeader Blog PHONE\u00a0\u00bb _builder_version=\u00a0\u00bb4.16&Prime; background_image=\u00a0\u00bbhttps:\/\/captaindarwin.org\/wp-content\/uploads\/2021\/11\/Background_20211126.jpg\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_row _builder_version=\u00a0\u00bb4.16&Prime; global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_column type=\u00a0\u00bb4_4&Prime; _builder_version=\u00a0\u00bb4.16&Prime; global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_image src=\u00a0\u00bbhttps:\/\/captaindarwin.org\/wp-content\/uploads\/2022\/01\/BlogDarwin.png\u00a0\u00bb align=\u00a0\u00bbcenter\u00a0\u00bb _builder_version=\u00a0\u00bb4.16&Prime; max_width=\u00a0\u00bb80%\u00a0\u00bb custom_margin=\u00a0\u00bb0px||-10px||false|false\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][\/et_pb_image][\/et_pb_column][\/et_pb_row][\/et_pb_section][et_pb_section fb_built=\u00a0\u00bb1&Prime; admin_label=\u00a0\u00bbTexte\u00a0\u00bb _builder_version=\u00a0\u00bb4.16&Prime; global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_row _builder_version=\u00a0\u00bb4.16&Prime; global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_column type=\u00a0\u00bb4_4&Prime; _builder_version=\u00a0\u00bb4.16&Prime; global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_post_title author=\u00a0\u00bboff\u00a0\u00bb comments=\u00a0\u00bboff\u00a0\u00bb featured_image=\u00a0\u00bboff\u00a0\u00bb _builder_version=\u00a0\u00bb4.19.5&Prime; title_text_color=\u00a0\u00bb#777777&Prime; title_font_size=\u00a0\u00bb35px\u00a0\u00bb title_letter_spacing=\u00a0\u00bb1px\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][\/et_pb_post_title][et_pb_text _builder_version=\u00a0\u00bb4.19.5&Prime; text_orientation=\u00a0\u00bbjustified\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb]<\/p>\n<p><strong>Le Mollusque sous toute ses coutures<\/strong><\/p>\n<p>Les \u00e9l\u00e8ves de 5<sup>\u00e8me<\/sup> du coll\u00e8ge du Porzou \u00e0 Concarneau sont all\u00e9s \u00e0 la p\u00eache aux mollusques en ce d\u00e9but de mois de mars. Ils sortent sous un ciel gris et un temps mena\u00e7ant. Mais la chance est de notre c\u00f4t\u00e9 il semblerait ! Pas une goutte d\u2019eau n\u2019est tomb\u00e9e. Nous allons du c\u00f4t\u00e9 de la Anse de Kersaux pour faire nos observations \u00e0 mar\u00e9e basse. Nathalie Delliou de l\u2019association Esprit Nat\u2019ure anime cette sortie et l\u2019alimente de nombreuses anecdotes qui captivent l\u2019attention des \u00e9l\u00e8ves.<\/p>\n<p>Une pr\u00e9sentation du groupe des Mollusques est faite \u00e0 l&rsquo;\u00e9cole. Nous nous penchons sur 3 classes que l\u2019on va rencontrer sur l\u2019estran : les Bivalves, les Gast\u00e9ropodes ainsi que les C\u00e9phalopodes (que l\u2019on esp\u00e8re mais ne sommes pas s\u00fbr d\u2019observer). Une premi\u00e8re question est lanc\u00e9e : qu\u2019est-ce qui lie les animaux appartenant au groupe des Mollusques ? Des r\u00e9ponses ici et l\u00e0 sont propos\u00e9es : \u00ab ils ont un corps mou \u00bb, \u00ab ils ont pas de muscle \u00bb, \u00ab ils ont une coquille \u00bb\u2026 Effectivement, nous dit Nath, le mot mollusque tire sa racine du latin <em>mollis<\/em> qui veut dire mou. Mais attention, il a bel et bien un muscle, qui est dans son pieds pour les Gast\u00e9ropodes mais qui peut \u00e9galement \u00eatre r\u00e9parti autre part comme chez les coquilles St-Jacques. Ce que l&rsquo;on nomme la noix de St-Jacques est en fait un muscle qui lui sert \u00e0 fermer et ouvrir sa coquille. Et d\u2019ailleurs, puisqu&rsquo;on en parle, saviez-vous qu\u2019elles ont environ 200 yeux ? Enfin, ce ne sont pas r\u00e9ellement des yeux, plus des miroirs qui permettent de r\u00e9fl\u00e9chir la lumi\u00e8re et d\u2019\u00eatre alert\u00e9 lorsqu\u2019un pr\u00e9dateur approche. Nathalie nous donne d\u2019autres d\u00e9tails int\u00e9ressants sur la morphologie, la respiration ou encore l\u2019alimentation des Mollusques de l\u2019estran Breton. Les Gast\u00e9ropodes par exemple, ont une langue r\u00e2peuse appel\u00e9e radula qui sert aux brouteurs. Elle leur permet de gratter, r\u00e2per, d\u00e9coller ou d\u00e9chirer la nourriture accroch\u00e9e au substrat.<\/p>\n<p>Nous finissons cette pr\u00e9sentation par un d\u00e9fil\u00e9 d\u2019esp\u00e8ces montr\u00e9es aux \u00e9l\u00e8ves pour voir s\u2019ils en connaissent certaines. Et \u00e0 notre surprise, sans m\u00eame un guide d\u2019identification en main, ils reconnaissent les bigorneaux, les littorines, les monodontes et les nasses.<\/p>\n<p>[\/et_pb_text][et_pb_image src=\u00a0\u00bbhttps:\/\/captaindarwin.org\/wp-content\/uploads\/2023\/03\/st-jacque_morpho-e1678446623543.jpg\u00a0\u00bb title_text=\u00a0\u00bbst-jacque_morpho\u00a0\u00bb align=\u00a0\u00bbcenter\u00a0\u00bb admin_label=\u00a0\u00bbImage Paysage\u00a0\u00bb _builder_version=\u00a0\u00bb4.19.5&Prime; width=\u00a0\u00bb72%\u00a0\u00bb width_tablet=\u00a0\u00bb\u00a0\u00bb width_phone=\u00a0\u00bb100%\u00a0\u00bb width_last_edited=\u00a0\u00bbon|phone\u00a0\u00bb custom_margin=\u00a0\u00bb||6px|||\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][\/et_pb_image][et_pb_text admin_label=\u00a0\u00bbTexte\u00a0\u00bb _builder_version=\u00a0\u00bb4.19.5&Prime; text_orientation=\u00a0\u00bbjustified\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb]<\/p>\n<p style=\"text-align: center;\"><i>Les 200 yeux de la Coquille St-Jacques et la morphologie d&rsquo;une moule<\/i><\/p>\n<p>[\/et_pb_text][et_pb_text _builder_version=\u00a0\u00bb4.19.5&Prime; text_orientation=\u00a0\u00bbjustified\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb]<\/p>\n<p>\u00c9quip\u00e9s d\u2019\u00e9puisettes, de bacs transparents et de bottes de pluie, nous partons dans la Anse vaseuse de Kersaux avec en t\u00eate un objectif : r\u00e9colter le plus de Bivalves et de Gast\u00e9ropodes diff\u00e9rents pour ensuite revenir en classe et les identifier. L\u2019activit\u00e9 est lanc\u00e9e apr\u00e8s un rappel des consignes par Nathalie : on fait attention aux esp\u00e8ces que l\u2019on r\u00e9colte pour ne pas trop les stresser, elle seront rel\u00e2ch\u00e9es apr\u00e8s qu&rsquo;on les ait observ\u00e9es et surtout, si l\u2019on veut d\u00e9placer un rocher pour voir ce qui se trouve dessous, on remet en place la roche. Car en effet, l\u2019habitat qui se trouve sous le rocher peut mettre jusqu\u2019\u00e0 3 ans \u00e0 se reconstituer \u00e0 l\u2019identique si l&rsquo;on ne remet pas d\u00e9licatement la roche en place. Nathalie nous explique \u00e9galement qu\u2019il y a diff\u00e9rents types d\u2019habitats pour les esp\u00e8ces que l\u2019on cherche : les blocs, les marres, les creux des roches et le dessous des pierres. Elle propose en premier lieu d\u2019aller chercher des Troques, ce Gast\u00e9ropode qui vit sur la roche ou dans les flaques dont les motifs en bandes serr\u00e9es ravissent les yeux. Chaque groupe part de son c\u00f4t\u00e9 et finit par r\u00e9colter toutes les esp\u00e8ces qu\u2019il trouve sur son passage.<\/p>\n<p>[\/et_pb_text][et_pb_image src=\u00a0\u00bbhttps:\/\/captaindarwin.org\/wp-content\/uploads\/2023\/03\/identification-e1678446648703.jpg\u00a0\u00bb title_text=\u00a0\u00bbidentification\u00a0\u00bb align=\u00a0\u00bbcenter\u00a0\u00bb admin_label=\u00a0\u00bbImage Paysage\u00a0\u00bb _builder_version=\u00a0\u00bb4.19.5&Prime; width=\u00a0\u00bb72%\u00a0\u00bb width_tablet=\u00a0\u00bb\u00a0\u00bb width_phone=\u00a0\u00bb100%\u00a0\u00bb width_last_edited=\u00a0\u00bbon|phone\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][\/et_pb_image][et_pb_text admin_label=\u00a0\u00bbTexte\u00a0\u00bb _builder_version=\u00a0\u00bb4.19.5&Prime; text_orientation=\u00a0\u00bbjustified\u00a0\u00bb min_height=\u00a0\u00bb20.8px\u00a0\u00bb custom_margin=\u00a0\u00bb-13px|||||\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb]<\/p>\n<p style=\"text-align: center;\"><em>La p\u00eache du jour\u00a0\u00a0<\/em><\/p>\n<p>[\/et_pb_text][et_pb_text _builder_version=\u00a0\u00bb4.19.5&Prime; text_orientation=\u00a0\u00bbjustified\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb]<\/p>\n<p>Apr\u00e8s une dizaine de minute \u00e0 arpenter l\u2019estran, les bacs sont d\u00e9j\u00e0 bien remplis. Un groupe a r\u00e9ussi \u00e0 attraper une crevette dans son filet. Mais elle est vite rel\u00e2ch\u00e9e, ca ne fait pas parti des habitant de l\u2019estran que l\u2019on recherche. Nathalie nous repr\u00e9cise un d\u00e9tail important. L\u2019ouverture par laquelle sort la t\u00eate des Gast\u00e9ropodes indique s\u2019ils sont herbivores ou carnivores. En effet, une ouverture ovale prolong\u00e9e par un petit canal comme chez la Nasse r\u00e9ticul\u00e9e, nous indique que l\u2019esp\u00e8ce est carnivore, alors qu\u2019une ouverture ronde accompagn\u00e9e d\u2019un trou central est caract\u00e9ristique des esp\u00e8ces herbivores comme la Troque monodonte. La Nasse est d\u2019ailleurs \u00e9quip\u00e9e d\u2019une radula \u00e9paisse et puissante qui lui permet d\u2019arracher la chair de sa proie par lambeaux entier. Autre d\u00e9tail important, elle consomme des animaux morts et peut sentir leur odeur \u00e0 20 voir 30 m\u00e8tres de distance !<\/p>\n<p>[\/et_pb_text][et_pb_image src=\u00a0\u00bbhttps:\/\/captaindarwin.org\/wp-content\/uploads\/2023\/03\/WhatsApp-Image-2023-03-09-at-15.13.41.jpeg\u00a0\u00bb title_text=\u00a0\u00bbWhatsApp Image 2023-03-09 at 15.13.41&Prime; align=\u00a0\u00bbcenter\u00a0\u00bb _builder_version=\u00a0\u00bb4.19.5&Prime; width=\u00a0\u00bb57%\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][\/et_pb_image][et_pb_text admin_label=\u00a0\u00bbTexte\u00a0\u00bb _builder_version=\u00a0\u00bb4.19.5&Prime; text_orientation=\u00a0\u00bbjustified\u00a0\u00bb custom_margin=\u00a0\u00bb-10px||38px|||\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb custom_padding=\u00a0\u00bb||15px|||\u00a0\u00bb]<\/p>\n<p style=\"text-align: center;\"><i>Une hu\u00eetres, une coques et quelques littorines<\/i><\/p>\n<p>[\/et_pb_text][et_pb_text _builder_version=\u00a0\u00bb4.19.5&Prime; text_orientation=\u00a0\u00bbjustified\u00a0\u00bb custom_margin=\u00a0\u00bb-17px|||||\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb]<\/p>\n<p>On observe plusieurs berniques sur les rochers, appel\u00e9e Patelle communes. Nathalie nous explique que les patelles adaptent la marge de leur coquille pour \u00e9pouser la forme du rocher sur lequel elles s\u2019\u00e9tablissent. Mais ca ne les emp\u00eache pas de se d\u00e9placer ! Elles peuvent parcourir de bonnes distances pour trouver de la nourriture et revenir exactement au m\u00eame endroit gr\u00e2ce \u00e0 la substance chimique qu\u2019elles laissent sur leur passage ! Eh oui, \u00e0 l\u2019image du petit poucet, elles pars\u00e8ment leur route de traces qui leur permettent de retourner chez elles sans se perdre.\u00a0<\/p>\n<p>En ce 8 mars, le coefficient de mar\u00e9e est de 85, ce qui nous donne la possibilit\u00e9 d&rsquo;aller de l&rsquo;autre c\u00f4t\u00e9 de la anse sans se mouiller les pieds. Mais c\u2019est sans compter la vase ! Certaines bottes restent coinc\u00e9es dans plus de dix centim\u00e8tres de sable et on se retrouve \u00e0 devoir tirer d\u2019affaire une \u00e9l\u00e8ve dont le pieds est bloqu\u00e9.<\/p>\n<p>Sur l&rsquo;autre bord on retrouve Nathalie qui a un objectif en t\u00eate, trouver un Li\u00e8vre de mer sous un rocher. Elle s\u2019affaire \u00e0 soulever toutes les roches que l\u2019on croise pendant que les \u00e9l\u00e8ves continuent d\u2019inspecter les marres \u00e0 la recherche de nouveaux sp\u00e9cimens. Le Li\u00e8vre de mer est un Gast\u00e9ropode assez singulier puisque sa coquille est \u00e0 l\u2019int\u00e9rieur de son corps, elle n\u2019est donc pas visible. Lorsqu\u2019il est d\u00e9rang\u00e9 ou qu\u2019il se retrouve face \u00e0 un pr\u00e9dateur, il secr\u00e8te une substance violette qui perturbe les organes olfactifs du pr\u00e9dateur en simulant de la nourriture, comme un leurre. C&rsquo;est un animal un peu \u00e0 la marge du groupe des Gast\u00e9ropodes, qu&rsquo;il aurait \u00e9t\u00e9 int\u00e9ressant d&rsquo;observer. Malheureusement, malgr\u00e9 une bonne quarantaine de roches soulev\u00e9es, nous n\u2019en trouvons aucun. On repart donc en classe, les bacs transparents remplis d\u2019esp\u00e8ces que l\u2019on va observer en classe.<\/p>\n<p>[\/et_pb_text][et_pb_image src=\u00a0\u00bbhttps:\/\/captaindarwin.org\/wp-content\/uploads\/2023\/03\/espece-en-main-e1678454437881.jpg\u00a0\u00bb title_text=\u00a0\u00bbespece en main\u00a0\u00bb align=\u00a0\u00bbcenter\u00a0\u00bb admin_label=\u00a0\u00bbImage Paysage\u00a0\u00bb _builder_version=\u00a0\u00bb4.19.5&Prime; width=\u00a0\u00bb79%\u00a0\u00bb width_tablet=\u00a0\u00bb\u00a0\u00bb width_phone=\u00a0\u00bb100%\u00a0\u00bb width_last_edited=\u00a0\u00bbon|phone\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][\/et_pb_image][et_pb_text admin_label=\u00a0\u00bbTexte\u00a0\u00bb _builder_version=\u00a0\u00bb4.19.5&Prime; text_orientation=\u00a0\u00bbjustified\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb]<\/p>\n<p style=\"text-align: center;\"><i>Une blennie dans la main de Nathalie &#8211; \u00e0 la recherche de la crevette attrap\u00e9e dans un filet &#8211; observation de l&rsquo;ouverture des Gast\u00e9ropodes<\/i><\/p>\n<p>[\/et_pb_text][et_pb_text _builder_version=\u00a0\u00bb4.19.5&Prime; text_orientation=\u00a0\u00bbjustified\u00a0\u00bb custom_margin=\u00a0\u00bb||-32px|||\u00a0\u00bb custom_padding=\u00a0\u00bb||0px|||\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][\/et_pb_text][et_pb_text _builder_version=\u00a0\u00bb4.19.5&Prime; text_orientation=\u00a0\u00bbjustified\u00a0\u00bb custom_padding=\u00a0\u00bb||0px|||\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb]<\/p>\n<p>De retour sur les paillasses de la salle de SVT, chaque groupe est charg\u00e9 de s\u00e9parer dans un m\u00eame bac les esp\u00e8ces appartenant \u00e0 la classe des Gast\u00e9ropodes et celles appartenant \u00e0 la classe des Bivalves. Plut\u00f4t simple comme distinction : les bivalves sont compos\u00e9es de deux valves \/ coquilles, alors que les Gast\u00e9ropodes ont g\u00e9n\u00e9ralement une seule coquille plus ou moins spiral\u00e9e. Le deuxi\u00e8me exercice est un peu plus complexe. Il s\u2019agit d\u2019identifier \u00e0 quelle esp\u00e8ce appartient chaque individu. \u00c0 l\u2019aide d\u2019un guide d\u2019identification, les \u00e9l\u00e8ves s\u2019essaient \u00e0 nommer ce qu\u2019ils ont sous les yeux. Nathalie pendant ce temps-l\u00e0, diss\u00e8que une des berniques trouv\u00e9es pour en extraire la radula. Elle nous montre ensuite au microscope cette fameuse langue (la radula) qui est connue pour avoir des dents faites du mat\u00e9riau le plus r\u00e9sistant au monde : la goethite. Les \u00e9l\u00e8ves passent \u00e0 tour de r\u00f4le leur \u0153il dans l\u2019oculaire du microscope pour l\u2019observer et peuvent voir apparaitre sur cette bande fine des rang\u00e9es ordonn\u00e9es de 3 dents coll\u00e9es.\u00a0<\/p>\n<p>[\/et_pb_text][et_pb_image src=\u00a0\u00bbhttps:\/\/captaindarwin.org\/wp-content\/uploads\/2023\/03\/WhatsApp-Image-2023-03-09-at-15.13.38-e1678457490203.jpeg\u00a0\u00bb title_text=\u00a0\u00bbWhatsApp Image 2023-03-09 at 15.13.38&Prime; align=\u00a0\u00bbcenter\u00a0\u00bb admin_label=\u00a0\u00bbImage Paysage\u00a0\u00bb _builder_version=\u00a0\u00bb4.19.5&Prime; width=\u00a0\u00bb40%\u00a0\u00bb width_tablet=\u00a0\u00bb\u00a0\u00bb width_phone=\u00a0\u00bb100%\u00a0\u00bb width_last_edited=\u00a0\u00bbon|phone\u00a0\u00bb min_height=\u00a0\u00bb100px\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][\/et_pb_image][et_pb_text admin_label=\u00a0\u00bbTexte\u00a0\u00bb _builder_version=\u00a0\u00bb4.19.5&Prime; text_orientation=\u00a0\u00bbjustified\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb]<\/p>\n<p style=\"text-align: center;\"><i>La radula dans l&rsquo;oculaire du microscope.<\/i><\/p>\n<p>[\/et_pb_text][et_pb_text _builder_version=\u00a0\u00bb4.19.5&Prime; text_orientation=\u00a0\u00bbjustified\u00a0\u00bb custom_margin=\u00a0\u00bb-16px||-59px|||\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb]<\/p>\n<p>Un temps est ensuite allou\u00e9 \u00e0 la restitution des identifications. Chaque groupe pr\u00e9sente ses trouvailles, et compl\u00e8te la liste au tableau. 10 gast\u00e9ropodes ont \u00e9t\u00e9 trouv\u00e9s, contre 6 bivalves. On a des Gibulles ombiliqu\u00e9, mage, une Cr\u00e9pidule, des Bigorneau, des pourpres mais \u00e9galement des restes de St-Jacques, d\u2019hu\u00eetres ou encore de couteau&#8230; Cette sortie a \u00e9t\u00e9 riche, les \u00e9l\u00e8ves ont pu appr\u00e9hender sous un \u0153il nouveau la biodiversit\u00e9 qui se trouve \u00e0 5 minutes \u00e0 pied de leur \u00e9tablissement, et nous esp\u00e9rons qu\u2019ils ont appr\u00e9ci\u00e9s ce moment en dehors de leur salle de classe !<\/p>\n<p>Nous nous disons au revoir et \u00e0 bient\u00f4t pour a visio avec Victor ! Au programme, une comparaison avec le poulpe du Cap Vert est pr\u00e9vue.<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>[\/et_pb_text][et_pb_text admin_label=\u00a0\u00bbTexte\u00a0\u00bb _builder_version=\u00a0\u00bb4.19.5&Prime; text_orientation=\u00a0\u00bbjustified\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb]<\/p>\n<p><em>R\u00e9daction : Sacha, service civique en charge de la coordination du programme p\u00e9dagogiques de l\u2019association Captain Darwin.<\/em><\/p>\n<p>[\/et_pb_text][et_pb_image src=\u00a0\u00bbhttps:\/\/captaindarwin.org\/wp-content\/uploads\/2022\/12\/lol4-scaled.jpg\u00a0\u00bb align=\u00a0\u00bbcenter\u00a0\u00bb _builder_version=\u00a0\u00bb4.16&Prime; width=\u00a0\u00bb29%\u00a0\u00bb max_width=\u00a0\u00bb29%\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][\/et_pb_image][et_pb_button button_url=\u00a0\u00bbhttps:\/\/www.captaindarwin.org\/fr\/#blog\u00a0\u00bb button_text=\u00a0\u00bbRetour \u00e0 la page d&rsquo;accueil\u00a0\u00bb button_alignment=\u00a0\u00bbcenter\u00a0\u00bb admin_label=\u00a0\u00bbRetour \u00e0 la page d&rsquo;accueil\u00a0\u00bb _builder_version=\u00a0\u00bb4.16&Prime; custom_button=\u00a0\u00bbon\u00a0\u00bb button_text_size=\u00a0\u00bb12px\u00a0\u00bb button_text_color=\u00a0\u00bb#ffffff\u00a0\u00bb button_bg_color=\u00a0\u00bb#f4454b\u00a0\u00bb button_border_width=\u00a0\u00bb0px\u00a0\u00bb background_layout=\u00a0\u00bbdark\u00a0\u00bb custom_margin=\u00a0\u00bb40px||40px||false|false\u00a0\u00bb custom_css_main_element=\u00a0\u00bbfont-family: %22futura-pt%22,sans-serif;||letter-spacing: 1px;\u00a0\u00bb locked=\u00a0\u00bboff\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][\/et_pb_button][\/et_pb_column][\/et_pb_row][\/et_pb_section][et_pb_section fb_built=\u00a0\u00bb1&Prime; disabled_on=\u00a0\u00bbon|off|off\u00a0\u00bb admin_label=\u00a0\u00bbSUPPORT DESKTOP\u00a0\u00bb module_id=\u00a0\u00bbsupport\u00a0\u00bb _builder_version=\u00a0\u00bb4.16&Prime; background_image=\u00a0\u00bbhttps:\/\/captaindarwin.org\/wp-content\/uploads\/2020\/02\/Support_Background-1.jpg\u00a0\u00bb saved_tabs=\u00a0\u00bball\u00a0\u00bb locked=\u00a0\u00bboff\u00a0\u00bb collapsed=\u00a0\u00bboff\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_row admin_label=\u00a0\u00bbSupport\u00a0\u00bb _builder_version=\u00a0\u00bb4.16&Prime; global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_column type=\u00a0\u00bb4_4&Prime; _builder_version=\u00a0\u00bb4.16&Prime; global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_text admin_label=\u00a0\u00bbSupport\u00a0\u00bb _builder_version=\u00a0\u00bb4.16&Prime; global_colors_info=\u00a0\u00bb{}\u00a0\u00bb]<\/p>\n<h2 style=\"text-align: center;\">SOUTENIR <img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/captaindarwin.org\/wp-content\/uploads\/2020\/02\/Support.png\" alt=\"\" width=\"35\" height=\"35\" \/><\/h2>\n<p>[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row column_structure=\u00a0\u00bb1_3,1_3,1_3&Prime; _builder_version=\u00a0\u00bb4.16&Prime; custom_margin=\u00a0\u00bb20px||||false|false\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_column type=\u00a0\u00bb1_3&Prime; _builder_version=\u00a0\u00bb4.16&Prime; global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_image src=\u00a0\u00bbhttps:\/\/captaindarwin.org\/wp-content\/uploads\/2020\/02\/YouTube.png\u00a0\u00bb align=\u00a0\u00bbcenter\u00a0\u00bb admin_label=\u00a0\u00bbYouTube\u00a0\u00bb _builder_version=\u00a0\u00bb4.16&Prime; height=\u00a0\u00bb25px\u00a0\u00bb custom_padding=\u00a0\u00bb7px||||false|false\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][\/et_pb_image][\/et_pb_column][et_pb_column type=\u00a0\u00bb1_3&Prime; _builder_version=\u00a0\u00bb4.16&Prime; global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_image src=\u00a0\u00bbhttps:\/\/captaindarwin.org\/wp-content\/uploads\/2020\/02\/Patreon.png\u00a0\u00bb align=\u00a0\u00bbcenter\u00a0\u00bb admin_label=\u00a0\u00bbPatreon\u00a0\u00bb _builder_version=\u00a0\u00bb4.16&Prime; height=\u00a0\u00bb40px\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][\/et_pb_image][\/et_pb_column][et_pb_column type=\u00a0\u00bb1_3&Prime; _builder_version=\u00a0\u00bb4.16&Prime; global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_image src=\u00a0\u00bbhttps:\/\/captaindarwin.org\/wp-content\/uploads\/2020\/02\/Mail.png\u00a0\u00bb align=\u00a0\u00bbcenter\u00a0\u00bb admin_label=\u00a0\u00bbEmail\u00a0\u00bb _builder_version=\u00a0\u00bb4.16&Prime; height=\u00a0\u00bb35px\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][\/et_pb_image][\/et_pb_column][\/et_pb_row][et_pb_row column_structure=\u00a0\u00bb1_3,1_3,1_3&Prime; _builder_version=\u00a0\u00bb4.16&Prime; custom_margin=\u00a0\u00bb-40px||100px||false|false\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_column type=\u00a0\u00bb1_3&Prime; _builder_version=\u00a0\u00bb4.16&Prime; global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_text _builder_version=\u00a0\u00bb4.16&Prime; custom_margin=\u00a0\u00bb15px||15px||false|false\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb]<\/p>\n<h5 style=\"text-align: center;\">Suivez mes aventures<br \/>\nen vid\u00e9o, avec un nouvel<br \/>\n\u00e9pisode toutes les 2 semaines.<\/h5>\n<p>[\/et_pb_text][et_pb_button button_url=\u00a0\u00bbhttps:\/\/www.youtube.com\/channel\/UCOCQdm7XlO8eBSw2gpK_9cw\/\u00a0\u00bb button_text=\u00a0\u00bbS&rsquo;ABONNER\u00a0\u00bb button_alignment=\u00a0\u00bbcenter\u00a0\u00bb admin_label=\u00a0\u00bbSubscribe\u00a0\u00bb _builder_version=\u00a0\u00bb4.16&Prime; 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global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_column type=\u00a0\u00bb4_4&Prime; _builder_version=\u00a0\u00bb4.16&Prime; global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_text admin_label=\u00a0\u00bbSupport\u00a0\u00bb _builder_version=\u00a0\u00bb4.16&Prime; global_colors_info=\u00a0\u00bb{}\u00a0\u00bb]<\/p>\n<h2 style=\"text-align: center;\">SOUTENIR <img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/captaindarwin.org\/wp-content\/uploads\/2020\/02\/Support.png\" alt=\"\" width=\"35\" height=\"35\" \/><\/h2>\n<p>[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row column_structure=\u00a0\u00bb1_3,1_3,1_3&Prime; _builder_version=\u00a0\u00bb4.16&Prime; custom_margin=\u00a0\u00bb20px||||false|false\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_column type=\u00a0\u00bb1_3&Prime; _builder_version=\u00a0\u00bb4.16&Prime; global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_image src=\u00a0\u00bbhttps:\/\/captaindarwin.org\/wp-content\/uploads\/2020\/02\/YouTube.png\u00a0\u00bb align=\u00a0\u00bbcenter\u00a0\u00bb admin_label=\u00a0\u00bbYouTube\u00a0\u00bb _builder_version=\u00a0\u00bb4.16&Prime; height=\u00a0\u00bb25px\u00a0\u00bb custom_padding=\u00a0\u00bb7px||||false|false\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][\/et_pb_image][et_pb_text _builder_version=\u00a0\u00bb4.16&Prime; custom_margin=\u00a0\u00bb15px||15px||false|false\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb]<\/p>\n<h5 style=\"text-align: center;\">Suivez mes aventures<br \/>\nen vid\u00e9o, avec un nouvel<br \/>\n\u00e9pisode toutes les 2 semaines.<\/h5>\n<p>[\/et_pb_text][et_pb_button button_url=\u00a0\u00bbhttps:\/\/www.youtube.com\/channel\/UCOCQdm7XlO8eBSw2gpK_9cw\/\u00a0\u00bb button_text=\u00a0\u00bbS&rsquo;ABONNER\u00a0\u00bb button_alignment=\u00a0\u00bbcenter\u00a0\u00bb admin_label=\u00a0\u00bbSubscribe\u00a0\u00bb _builder_version=\u00a0\u00bb4.16&Prime; custom_button=\u00a0\u00bbon\u00a0\u00bb button_text_size=\u00a0\u00bb12px\u00a0\u00bb button_text_color=\u00a0\u00bb#ffffff\u00a0\u00bb button_bg_color=\u00a0\u00bbrgba(0,0,0,0)\u00a0\u00bb button_border_width=\u00a0\u00bb1px\u00a0\u00bb button_border_color=\u00a0\u00bb#ffffff\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][\/et_pb_button][\/et_pb_column][et_pb_column type=\u00a0\u00bb1_3&Prime; _builder_version=\u00a0\u00bb4.16&Prime; global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_image src=\u00a0\u00bbhttps:\/\/captaindarwin.org\/wp-content\/uploads\/2020\/02\/Patreon.png\u00a0\u00bb align=\u00a0\u00bbcenter\u00a0\u00bb admin_label=\u00a0\u00bbPatreon\u00a0\u00bb _builder_version=\u00a0\u00bb4.16&Prime; height=\u00a0\u00bb40px\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][\/et_pb_image][et_pb_text _builder_version=\u00a0\u00bb4.16&Prime; custom_margin=\u00a0\u00bb15px||15px||false|false\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb]<\/p>\n<h5 style=\"text-align: center;\">Vous pouvez participer<br \/>\nfinanci\u00e8rement au projet en donnant<br \/>\nquelques euros chaque mois.<\/h5>\n<p>[\/et_pb_text][et_pb_button button_url=\u00a0\u00bbhttp:\/\/www.patreon.com\/captaindarwin\u00a0\u00bb button_text=\u00a0\u00bbFAIRE UN DON\u00a0\u00bb button_alignment=\u00a0\u00bbcenter\u00a0\u00bb admin_label=\u00a0\u00bbBecome a Patron\u00a0\u00bb _builder_version=\u00a0\u00bb4.16&Prime; custom_button=\u00a0\u00bbon\u00a0\u00bb button_text_size=\u00a0\u00bb12px\u00a0\u00bb button_text_color=\u00a0\u00bb#ffffff\u00a0\u00bb button_bg_color=\u00a0\u00bbrgba(0,0,0,0)\u00a0\u00bb button_border_width=\u00a0\u00bb1px\u00a0\u00bb button_border_color=\u00a0\u00bb#ffffff\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][\/et_pb_button][\/et_pb_column][et_pb_column type=\u00a0\u00bb1_3&Prime; _builder_version=\u00a0\u00bb4.16&Prime; global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][et_pb_image src=\u00a0\u00bbhttps:\/\/captaindarwin.org\/wp-content\/uploads\/2020\/02\/Mail.png\u00a0\u00bb align=\u00a0\u00bbcenter\u00a0\u00bb admin_label=\u00a0\u00bbEmail\u00a0\u00bb _builder_version=\u00a0\u00bb4.16&Prime; height=\u00a0\u00bb35px\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][\/et_pb_image][et_pb_text _builder_version=\u00a0\u00bb4.16&Prime; custom_margin=\u00a0\u00bb15px||15px||false|false\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb]<\/p>\n<h5 style=\"text-align: center;\">N&rsquo;h\u00e9sitez pas \u00e0 me contacter<br \/>\npar mail si vous avez<br \/>\ndes questions !<\/h5>\n<p>[\/et_pb_text][et_pb_button button_url=\u00a0\u00bbmailto:hello@captaindarwin.org\u00a0\u00bb button_text=\u00a0\u00bbDIRE BONJOUR !\u00a0\u00bb button_alignment=\u00a0\u00bbcenter\u00a0\u00bb admin_label=\u00a0\u00bbSay Hello\u00a0\u00bb _builder_version=\u00a0\u00bb4.16&Prime; custom_button=\u00a0\u00bbon\u00a0\u00bb button_text_size=\u00a0\u00bb12px\u00a0\u00bb button_text_color=\u00a0\u00bb#ffffff\u00a0\u00bb button_bg_color=\u00a0\u00bbrgba(0,0,0,0)\u00a0\u00bb button_border_width=\u00a0\u00bb1px\u00a0\u00bb button_border_color=\u00a0\u00bb#ffffff\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][\/et_pb_button][\/et_pb_column][\/et_pb_row][\/et_pb_section]<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Le Mollusque sous toute ses coutures Les \u00e9l\u00e8ves de 5\u00e8me du coll\u00e8ge du Porzou \u00e0 Concarneau sont all\u00e9s \u00e0 la p\u00eache aux mollusques en ce d\u00e9but de mois de mars. Ils sortent sous un ciel gris et un temps mena\u00e7ant. Mais la chance est de notre c\u00f4t\u00e9 il semblerait ! Pas une goutte d\u2019eau n\u2019est [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":3070,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"on","_et_pb_old_content":"","_et_gb_content_width":"","footnotes":""},"categories":[21],"tags":[],"class_list":["post-3062","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-pedagogie"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.6 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Du mollusque sur l&#039;estran - Captain Darwin<\/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:\/\/captaindarwin.org\/fr\/2023\/03\/10\/du-mollusque-sur-lestran\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Du mollusque sur l&#039;estran - Captain Darwin\" \/>\n<meta property=\"og:description\" content=\"Le Mollusque sous toute ses coutures Les \u00e9l\u00e8ves de 5\u00e8me du coll\u00e8ge du Porzou \u00e0 Concarneau sont all\u00e9s \u00e0 la p\u00eache aux mollusques en ce d\u00e9but de mois de mars. Ils sortent sous un ciel gris et un temps mena\u00e7ant. Mais la chance est de notre c\u00f4t\u00e9 il semblerait ! 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