{"id":7065,"date":"2021-03-09T15:50:52","date_gmt":"2021-03-09T14:50:52","guid":{"rendered":"https:\/\/dev.asleman.org\/?post_type=60_secondes&p=7065"},"modified":"2021-03-09T15:50:52","modified_gmt":"2021-03-09T14:50:52","slug":"n74-le-chironome","status":"publish","type":"60_secondes","link":"https:\/\/asleman.org\/en\/60_secondes\/n74-le-chironome\/","title":{"rendered":"N\u00b074 The Chironome"},"content":{"rendered":"

It's here, the temperatures are rising, the sun is shining... the fine weather is coming! We're already imagining our evenings by the lake, with a little meal and cocktails...\ud835\uddf2\ud835\ude01 \ud835\uddf1\ud835\uddf2\ud835\ude00 \ud835\uddfa\ud835\uddfc\ud835\ude02\ud835\ude00\ud835\ude01\ud835\uddf6\ud835\uddfe\ud835\ude02\ud835\uddf2\ud835\ude00? <\/p>\n\n\n\n

And yes, while we love to enjoy the lake in spring and summer, many species of insects enjoy it too! But are they really mosquitoes, \ud835\uddf0\ud835\uddf2\ud835\ude00 \ud835\uddfd\ud835\uddf2\ud835\ude01\ud835\uddf6\ud835\ude01\ud835\uddf2\ud835\ude00 \ud835\uddef\ud835\uddf2\u0302\ud835\ude01\ud835\uddf2\ud835\ude00 \ud835\uddfe\ud835\ude02\ud835\uddf6 \ud835\ude03\ud835\uddfc\ud835\uddf9\ud835\uddf2\ud835\uddfb\ud835\ude01 \ud835\uddf2\ud835\uddfb \ud835\uddf4\ud835\uddff\ud835\uddfc\ud835\ude02\ud835\uddfd\ud835\uddf2\ud835\ude00 \ud835\uddee\ud835\ude02 \ud835\uddef\ud835\uddfc\ud835\uddff\ud835\uddf1 \ud835\uddf1\ud835\uddf2 \ud835\uddf9'\ud835\uddf2\ud835\uddee\ud835\ude02? <\/p>\n\n\n\n

\ud835\uddd8\ud835\uddf5 \ud835\uddfb\ud835\uddfc\ud835\uddfb, \ud835\uddf0\ud835\uddf2 \ud835\ude00\ud835\uddfc\ud835\uddfb\ud835\ude01 \ud835\uddf1\ud835\uddf2\ud835\ude00 \ud835\uddd6\ud835\uddf5\ud835\uddf6\ud835\uddff\ud835\uddfc\ud835\uddfb\ud835\uddfc\ud835\uddfa\ud835\uddf2\ud835\ude00! This family does indeed look a lot like mosquitoes, and belongs to the same order as them (Diptera, one of the most important insect orders). However, they are distinguished by \ud835\uddf9'\ud835\uddee\ud835\uddef\ud835\ude00\ud835\uddf2\ud835\uddfb\ud835\uddf0\ud835\uddf2 \ud835\uddf1'\ud835\uddfc\ud835\uddff\ud835\uddf4\ud835\uddee\ud835\uddfb\ud835\uddf2 \ud835\uddfd\ud835\uddf6\ud835\uddfe\ud835\ude02\ud835\uddf2\ud835\ude02\ud835\uddff (so they're harmless!) and \ud835\uddf9\ud835\uddee \ud835\uddfd\ud835\uddff\ud835\uddf2\u0301\ud835\ude00\ud835\uddf2\ud835\uddfb\ud835\uddf0\ud835\uddf2, \ud835\uddf0\ud835\uddf5\ud835\uddf2\ud835\ude07 \ud835\uddf9\ud835\uddf2 \ud835\uddfa\ud835\uddee\u0302\ud835\uddf9\ud835\uddf2, \ud835\uddf1'\ud835\uddee\ud835\uddfb\ud835\ude01\ud835\uddf2\ud835\uddfb\ud835\uddfb\ud835\uddf2\ud835\ude00 \ud835\uddf2\ud835\uddfb \ud835\uddf3\ud835\uddfc\ud835\uddff\ud835\uddfa\ud835\uddf2 \ud835\uddf1\ud835\uddf2 \ud835\uddfd\ud835\uddf2\ud835\ude01\ud835\uddf6\ud835\ude01\ud835\ude00 \ud835\uddfd\ud835\uddf9\ud835\ude02\ud835\uddfa\ud835\uddf2\ud835\uddee\ud835\ude02\ud835\ude05 which give them a fluffy appearance. <\/p>\n\n\n\n

During \ud835\uddfd\ud835\uddf2\u0301\ud835\uddff\ud835\uddf6\ud835\uddfc\ud835\uddf1\ud835\uddf2 \ud835\uddf1\ud835\uddf2 \ud835\uddff\ud835\uddf2\ud835\uddfd\ud835\uddff\ud835\uddfc\ud835\uddf1\ud835\ude02\ud835\uddf0\ud835\ude01\ud835\uddf6\ud835\uddfc\ud835\uddfb, the males fly in groups along the water's edge or above the trees. They are joined by females, whom they recognise thanks to the acoustic perception organs present on their famous feathers! The female then lays her eggs on the water. The newborn will first go through a larval stage before emerging as an adult. <\/p>\n\n\n\n

These include \ud835\uddf9\ud835\uddf2\ud835\ude00 \ud835\uddf9\ud835\uddee\ud835\uddff\ud835\ude03\ud835\uddf2\ud835\ude00 \ud835\uddf1\ud835\uddf2 \ud835\uddd6\ud835\uddf5\ud835\uddf6\ud835\uddff\ud835\uddfc\ud835\uddfb\ud835\uddfc\ud835\uddfa\ud835\uddf6\ud835\uddf1\ud835\uddf2\u0301\ud835\ude00 \ud835\uddf1\ud835\uddee\ud835\uddfb\ud835\ude00 \ud835\uddfd\ud835\uddff\ud835\uddf2\ud835\ude00\ud835\uddfe\ud835\ude02\ud835\uddf2 \ud835\ude01\ud835\uddfc\ud835\ude02\ud835\ude00 \ud835\uddfa\ud835\uddf6\ud835\uddf9\ud835\uddf6\ud835\uddf2\ud835\ude02\ud835\ude05 \ud835\uddee\ud835\uddfe\ud835\ude02\ud835\uddee\ud835\ude01\ud835\uddf6\ud835\uddfe\ud835\ude02\ud835\uddf2\ud835\ude00 \ud835\uddfc\ud835\ude02 \ud835\ude00\ud835\uddf2\ud835\uddfa\ud835\uddf6-\ud835\uddee\ud835\uddfe\ud835\ude02\ud835\uddee\ud835\ude01\ud835\uddf6\ud835\uddfe\ud835\ude02\ud835\uddf2\ud835\ude00. This includes rivers and lakes as well as tree cavities and sewers! Yuck! <\/p>\n\n\n\n

No! These species survive pollution very well and are therefore very important for ecosystems! \ud835\uddd6\ud835\uddf2 \ud835\ude00\ud835\uddfc\ud835\uddfb\ud835\ude01 \ud835\uddf4\ud835\uddf2\u0301\ud835\uddfb\ud835\uddf2\u0301\ud835\uddff\ud835\uddee\ud835\uddf9\ud835\uddf2\ud835\uddfa\ud835\uddf2\ud835\uddfb\ud835\ude01 \ud835\uddf9\ud835\uddf2\ud835\ude00 \ud835\uddfd\ud835\uddff\ud835\uddf2\ud835\uddfa\ud835\uddf6\ud835\uddf2\u0300\ud835\uddff\ud835\uddf2\ud835\ude00 \ud835\uddf2\ud835\ude00\ud835\uddfd\ud835\uddf2\u0300\ud835\uddf0\ud835\uddf2\ud835\ude00 \ud835\uddee\u0300 \ud835\uddff\ud835\uddf2\ud835\ude03\ud835\uddf2\ud835\uddfb\ud835\uddf6\ud835\uddff \ud835\uddee\ud835\uddfd\ud835\uddff\ud835\uddf2\u0300\ud835\ude00 \ud835\ude02\ud835\uddfb\ud835\uddf2 \ud835\uddfd\ud835\uddfc\ud835\uddf9\ud835\uddf9\ud835\ude02\ud835\ude01\ud835\uddf6\ud835\uddfc\ud835\uddfb \ud835\uddfc\ud835\uddff\ud835\uddf4\ud835\uddee\ud835\uddfb\ud835\uddf6\ud835\uddfe\ud835\ude02\ud835\uddf2 \ud835\uddf1\ud835\ude02\ud835\uddff\ud835\uddee\ud835\uddef\ud835\uddf9\ud835\uddf2, \ud835\uddf2\ud835\uddf9\ud835\uddf9\ud835\uddf2\ud835\ude00 \ud835\uddf0\ud835\uddfc\ud835\uddfb\ud835\ude01\ud835\uddff\ud835\uddf6\ud835\uddef\ud835\ude02\ud835\uddf2\ud835\uddfb\ud835\ude01 \ud835\uddee\ud835\uddf9\ud835\uddfc\ud835\uddff\ud835\ude00 \ud835\uddee\u0300 \ud835\uddf9\ud835\uddee \ud835\uddff\ud835\uddf2\u0301\ud835\ude00\ud835\uddf6\ud835\uddf9\ud835\uddf6\ud835\uddf2\ud835\uddfb\ud835\uddf0\ud835\uddf2 \ud835\uddf1\ud835\uddf2 \ud835\uddf9'\ud835\uddf2\u0301\ud835\uddf0\ud835\uddfc\ud835\ude00\ud835\ude06\ud835\ude00\ud835\ude01\ud835\uddf2\u0300\ud835\uddfa\ud835\uddf2. This is because their larvae dig small holes in the surface layers of sediment (the silt deposits at the bottom of the water), bringing oxygen and minerals to the surface. These minerals are necessary for the survival of many species! <\/p>\n\n\n\n

These species are also very useful because of their abundance: as they are found everywhere and in large numbers, they form the basis of an entire food chain: \ud835\uddf2\ud835\uddf9\ud835\uddf9\ud835\uddf2\ud835\ude00 \ud835\uddfd\ud835\uddf2\ud835\uddff\ud835\uddfa\ud835\uddf2\ud835\ude01\ud835\ude01\ud835\uddf2\ud835\uddfb\ud835\ude01 \ud835\uddf1\ud835\uddf2 \ud835\uddfb\ud835\uddfc\ud835\ude02\ud835\uddff\ud835\uddff\ud835\uddf6\ud835\uddff \ud835\uddf9\ud835\uddf2\ud835\ude00 \ud835\uddf1\ud835\uddf2\ud835\uddfb\ud835\ude01\ud835\ude00 \ud835\uddf1\ud835\uddf2\ud835\ude00 \ud835\uddf0\ud835\ude06\ud835\uddf0\ud835\uddf9\ud835\uddf6\ud835\ude00\ud835\ude01\ud835\uddf2\ud835\ude00... but also various fish (The Trout and the F\u00e9ra, for example) Tritons, predatory insects and birds! <\/p>\n\n\n\n

So these chironomids are rather nice, aren't they?<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

Information from Doris, Chironomidae<\/p>\n\n\n\n

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