{"id":1107,"date":"2016-06-18T15:07:56","date_gmt":"2016-06-18T15:07:56","guid":{"rendered":"http:\/\/www.abbevillelariviere.fr\/?p=1107"},"modified":"2016-06-18T15:07:56","modified_gmt":"2016-06-18T15:07:56","slug":"lephemere","status":"publish","type":"post","link":"https:\/\/www.abbevillelariviere.fr\/?p=1107","title":{"rendered":"L’\u00e9ph\u00e9m\u00e8re"},"content":{"rendered":"

Voici un dr\u00f4le d’insecte. On l’appelle aussi “mouche de mai”.
\nSa bouche est si petite qu’il ne se nourrit pas.
\nDeux ou trois longs filaments sont reli\u00e9s \u00e0 son corps pour stabiliser son vol.
\nLa larve (na\u00efade) est aquatique, elle poss\u00e8de des branchies. Elle subit dix \u00e0 vingt mues avant de devenir adulte et de sortir de l’eau.<\/p>\n

\"ephem-1_0858\"<\/a><\/p>\n

Les \u00e9ph\u00e9m\u00e8res ne vivent que quelques heures hors de l’eau, pendant lesquelles ils s’accouplent. Le m\u00e2le meurt tout de suite apr\u00e8s ; la femelle a le temps de pondre des centaines d’\u0153ufs \u00e0 la surface de l’eau, qui couleront pour se poser sur le fond.
\n\"ephemere-3\"<\/a>
\n\"ephemere-4\"<\/a>
\n\"ephemere7\"<\/a><\/p>\n

Ils sont consid\u00e9r\u00e9s comme des insectes \u00e0 caract\u00e8re primitif. Ils sont apparus il y a 280 \u00e0 350 millions d’ann\u00e9es (au Carbonif\u00e8re), ce qui en fait les plus anciens insectes ail\u00e9s encore vivants.
\n\"ephem-2_0859\"<\/a><\/p>\n

Leur population en France a fortement r\u00e9gress\u00e9 depuis 50 ans, suite \u00e0 la d\u00e9gradation de la qualit\u00e9 de l’eau et \u00e0 la pollution g\u00e9n\u00e9rale de l’environnement (pesticides).<\/p>\n","protected":false},"excerpt":{"rendered":"

Voici un dr\u00f4le d’insecte. On l’appelle aussi “mouche de mai”. Sa bouche est si petite qu’il ne se nourrit pas. Deux ou trois longs filaments sont reli\u00e9s \u00e0 son corps 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