{"id":15773,"date":"2020-03-16T18:17:20","date_gmt":"2020-03-16T16:17:20","guid":{"rendered":"https:\/\/biology4u.gr\/?p=15773"},"modified":"2026-04-11T18:28:21","modified_gmt":"2026-04-11T16:28:21","slug":"%cf%84%ce%b1-%ce%b7%ce%bb%ce%b5%ce%ba%cf%84%cf%81%ce%bf%cf%86%cf%8c%cf%81%ce%b1-%cf%87%ce%ad%ce%bb%ce%b9%ce%b1","status":"publish","type":"post","link":"https:\/\/biology4u.gr\/?p=15773","title":{"rendered":"\u03a4\u03b1 \u03b7\u03bb\u03b5\u03ba\u03c4\u03c1\u03bf\u03c6\u03cc\u03c1\u03b1 \u03c7\u03ad\u03bb\u03b9\u03b1 \u03ba\u03b9 \u03ad\u03bd\u03b1\u03c2 \u0393\u03b5\u03c1\u03bc\u03b1\u03bd\u03cc\u03c2 \u03b5\u03be\u03b5\u03c1\u03b5\u03c5\u03bd\u03b7\u03c4\u03ae\u03c2"},"content":{"rendered":"\n<p>\u03a3\u03ae\u03bc\u03b5\u03c1\u03b1 \u03b8\u03b1 \u03c3\u03b1\u03c2 \u03b4\u03b9\u03b7\u03b3\u03b7\u03b8\u03ce \u03ad\u03bd\u03b1 \u03c0\u03b5\u03c1\u03b9\u03c3\u03c4\u03b1\u03c4\u03b9\u03ba\u03cc \u03b1\u03c0\u03cc \u03c4\u03b7 \u03b6\u03c9\u03ae \u03b5\u03bd\u03cc\u03c2 \u03c3\u03b7\u03bc\u03b1\u03bd\u03c4\u03b9\u03ba\u03bf\u03cd \u03c0\u03bf\u03bb\u03c5\u03bc\u03b1\u03b8\u03bf\u03cd\u03c2 \u0393\u03b5\u03c1\u03bc\u03b1\u03bd\u03bf\u03cd \u03b5\u03be\u03b5\u03c1\u03b5\u03c5\u03bd\u03b7\u03c4\u03ae, \u03bf \u03bf\u03c0\u03bf\u03af\u03bf\u03c2 \u03bc\u03ac\u03bb\u03bb\u03bf\u03bd \u03ad\u03c7\u03b5\u03b9 \u03be\u03b5\u03c7\u03b1\u03c3\u03c4\u03b5\u03af, \u03c0\u03b1\u03c1\u03ac \u03c4\u03bf \u03cc\u03c4\u03b9 \u03c3\u03c4\u03b7\u03bd \u03b5\u03c0\u03bf\u03c7\u03ae \u03c4\u03bf\u03c5 \u03b1\u03bd\u03b1\u03b3\u03bd\u03c9\u03c1\u03b9\u03b6\u03cc\u03c4\u03b1\u03bd \u03c9\u03c2 \u03ad\u03bd\u03b1\u03c2 \u03b1\u03c0\u03cc \u03c4\u03bf\u03c5\u03c2 \u03b4\u03b9\u03b1\u03c3\u03b7\u03bc\u03cc\u03c4\u03b5\u03c1\u03bf\u03c5\u03c2 \u03b1\u03bd\u03b8\u03c1\u03ce\u03c0\u03bf\u03c5\u03c2, \u03ba\u03b1\u03b9 \u03c0\u03b1\u03c1\u03ac \u03c4\u03bf \u03cc\u03c4\u03b9 \u03b7 \u03c3\u03c5\u03bc\u03b2\u03bf\u03bb\u03ae \u03c4\u03bf\u03c5 \u03c3\u03c4\u03b7\u03bd \u03bf\u03b9\u03ba\u03bf\u03bb\u03bf\u03b3\u03af\u03b1, \u03c3\u03c4\u03b7 \u03b2\u03b9\u03bf\u03b3\u03b5\u03c9\u03b3\u03c1\u03b1\u03c6\u03af\u03b1, \u03c3\u03c4\u03b7 \u03bc\u03b5\u03c4\u03b5\u03c9\u03c1\u03bf\u03bb\u03bf\u03b3\u03af\u03b1 \u03ba\u03b1\u03b9 \u03c4\u03b7 \u03b3\u03b5\u03c9\u03c6\u03c5\u03c3\u03b9\u03ba\u03ae \u03b5\u03af\u03bd\u03b1\u03b9 \u03b1\u03bd\u03b1\u03bc\u03c6\u03b9\u03c3\u03b2\u03ae\u03c4\u03b7\u03c4\u03b7.<\/p>\n\n\n\n<p>\u039f \u03b5\u03be\u03b5\u03c1\u03b5\u03c5\u03bd\u03b7\u03c4\u03ae\u03c2 \u03bf\u03bd\u03bf\u03bc\u03b1\u03b6\u03cc\u03c4\u03b1\u03bd <strong>Alexander von Humboldt<\/strong> \u03ba\u03b1\u03b9 \u03c3\u03b1\u03bd \u03c3\u03ae\u03bc\u03b5\u03c1\u03b1 \u03c4\u03b7\u03bd 19\u03b7 \u039c\u03b1\u03c1\u03c4\u03af\u03bf\u03c5 \u03c4\u03bf\u03c5 1800, \u03ba\u03b1\u03b8\u0384 \u03bf\u03b4\u03cc\u03bd \u03c0\u03c1\u03bf\u03c2 \u03c4\u03bf\u03bd \u039f\u03c1\u03b9\u03bd\u03cc\u03ba\u03bf, \u03b1\u03bd\u03b5\u03ba\u03ac\u03bb\u03c5\u03c8\u03b5 \u03c3\u03c4\u03bf Calaboso, \u03bc\u03b9\u03b1 \u03c0\u03b5\u03c1\u03b9\u03bf\u03c7\u03ae \u03c0\u03bf\u03c5 \u03b1\u03bd\u03ae\u03ba\u03b5\u03b9 \u03c3\u03c4\u03b7 \u0392\u03b5\u03bd\u03b5\u03b6\u03bf\u03c5\u03ad\u03bb\u03b1, \u03b2\u03ac\u03bb\u03c4\u03bf\u03c5\u03c2 \u03c0\u03bf\u03c5 \u03ad\u03b2\u03c1\u03b9\u03b8\u03b1\u03bd \u03b1\u03c0\u03cc \u03b7\u03bb\u03b5\u03ba\u03c4\u03c1\u03bf\u03c6\u03cc\u03c1\u03b1 \u00ab\u03c7\u03ad\u03bb\u03b9\u03b1\u00bb*. \u03a4\u03bf \u03c4\u03b1\u03be\u03af\u03b4\u03b9 \u03c4\u03bf\u03c5 \u03c3\u03c4\u03b7 \u039d\u03cc\u03c4\u03b9\u03bf \u0391\u03bc\u03b5\u03c1\u03b9\u03ba\u03ae -\u03c0\u03bf\u03c5 \u03b1\u03c0\u03ad\u03c6\u03b5\u03c1\u03b5 \u03b4\u03b5\u03ba\u03ac\u03b4\u03b5\u03c2 \u03c3\u03b7\u03bc\u03b5\u03b9\u03c9\u03bc\u03b1\u03c4\u03ac\u03c1\u03b9\u03b1 \u03bc\u03b5 \u03bc\u03b5\u03c4\u03b5\u03c9\u03c1\u03bf\u03bb\u03bf\u03b3\u03b9\u03ba\u03ad\u03c2, \u03b3\u03b5\u03c9\u03b3\u03c1\u03b1\u03c6\u03b9\u03ba\u03ad\u03c2, \u03b3\u03b5\u03c9\u03bb\u03bf\u03b3\u03b9\u03ba\u03ad\u03c2 \u03c0\u03b1\u03c1\u03b1\u03c4\u03b7\u03c1\u03ae\u03c3\u03b5\u03b9\u03c2, \u03b1\u03bb\u03bb\u03ac \u03ba\u03b1\u03b9 60.000! \u03c0\u03b5\u03c1\u03af\u03c0\u03bf\u03c5 \u03b4\u03b5\u03af\u03b3\u03bc\u03b1\u03c4\u03b1 \u03c6\u03c5\u03c4\u03ce\u03bd &#8211; \u03c4\u03bf \u03b5\u03af\u03c7\u03b5 \u03be\u03b5\u03ba\u03b9\u03bd\u03ae\u03c3\u03b5\u03b9 \u03ad\u03bd\u03b1 \u03c7\u03c1\u03cc\u03bd\u03bf \u03c0\u03c1\u03b9\u03bd, \u03c0\u03b1\u03c1\u03b1\u03ba\u03b9\u03bd\u03bf\u03cd\u03bc\u03b5\u03bd\u03bf\u03c2 \u03b1\u03c0\u03cc \u03c4\u03b7\u03bd \u03b9\u03b4\u03ad\u03b1 \u03c4\u03bf\u03c5 \u03cc\u03c4\u03b9 \u03b7 \u03b5\u03c0\u03b9\u03c3\u03c4\u03ae\u03bc\u03b7 \u03b4\u03b5\u03bd \u03c0\u03c1\u03ad\u03c0\u03b5\u03b9 \u03ba\u03c5\u03c1\u03af\u03c9\u03c2 \u03bd\u03b1 \u03b1\u03bd\u03b1\u03b6\u03b7\u03c4\u03b5\u03af \u03ba\u03b1\u03b8\u03bf\u03bb\u03b9\u03ba\u03bf\u03cd\u03c2 \u03bd\u03cc\u03bc\u03bf\u03c5\u03c2 \u00ab<strong><em>\u03b1\u03bb\u03bb\u03ac \u03bd\u03b1 \u03b2\u03b9\u03ce\u03bd\u03b5\u03c4\u03b1\u03b9 \u03bc\u03ad\u03c3\u03b1 \u03b1\u03c0\u03cc \u03c4\u03bf \u03c3\u03c5\u03bd\u03b1\u03af\u03c3\u03b8\u03b7\u03bc\u03b1<\/em><\/strong>\u00bb.<br><\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"alignright size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"735\" src=\"https:\/\/biology4u.gr\/wp-content\/uploads\/2026\/04\/eels.webp\" alt=\"\" class=\"wp-image-15776\" style=\"aspect-ratio:0.6804891015417331;width:236px;height:auto\" srcset=\"https:\/\/biology4u.gr\/wp-content\/uploads\/2026\/04\/eels.webp 500w, https:\/\/biology4u.gr\/wp-content\/uploads\/2026\/04\/eels-204x300.webp 204w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/figure>\n<\/div>\n\n\n<p>\u03a3\u03c5\u03bd\u03b1\u03bd\u03c4\u03ce\u03bd\u03c4\u03b1\u03c2 \u03bb\u03bf\u03b9\u03c0\u03cc\u03bd \u03bf \u03ae\u03c1\u03c9\u03b1\u03c2 \u03bc\u03b1\u03c2 \u03c4\u03b1 \u03b7\u03bb\u03b5\u03ba\u03c4\u03c1\u03bf\u03c6\u03cc\u03c1\u03b1 \u00ab\u03c7\u03ad\u03bb\u03b9\u03b1\u00bb \u03b8\u03ad\u03bb\u03b7\u03c3\u03b5 \u03bd\u03b1 \u03c4\u03b1 \u03bc\u03b5\u03bb\u03b5\u03c4\u03ae\u03c3\u03b5\u03b9 \u03ba\u03b1\u03b9 \u03b3\u03b9\u03b1 \u03c4\u03bf \u03c3\u03ba\u03bf\u03c0\u03cc \u03b1\u03c5\u03c4\u03cc, \u03bf\u03b4\u03ae\u03b3\u03b7\u03c3\u03b5 \u03bc\u03b5 \u03c4\u03b7 \u03b2\u03bf\u03ae\u03b8\u03b5\u03b9\u03b1 \u03bd\u03c4\u03cc\u03c0\u03b9\u03c9\u03bd 30 \u03ac\u03b3\u03c1\u03b9\u03b1 \u03ac\u03bb\u03bf\u03b3\u03b1 \u03c3\u03b5 \u03ad\u03bd\u03b1\u03bd \u03b2\u03ac\u03bb\u03c4\u03bf \u03ce\u03c3\u03c4\u03b5 \u03bc\u03b5 \u03c4\u03b7\u03bd \u03b1\u03bd\u03b1\u03c4\u03b1\u03c1\u03b1\u03c7\u03ae \u03c0\u03bf\u03c5 \u03b8\u03b1 \u03c0\u03c1\u03bf\u03ba\u03b1\u03bb\u03bf\u03cd\u03c3\u03b1\u03bd, \u03bd\u03b1 \u03ad\u03ba\u03b1\u03bd\u03b1\u03bd \u03c4\u03b1 \u00ab\u03c7\u03ad\u03bb\u03b9\u03b1\u00bb \u03bd\u03b1 \u03b2\u03b3\u03bf\u03c5\u03bd \u03b1\u03c0\u03cc \u03c4\u03b7 \u03bb\u03ac\u03c3\u03c0\u03b7 \u03c4\u03bf\u03c5 \u03b2\u03ac\u03bb\u03c4\u03bf\u03c5 \u03ba\u03b1\u03b9 \u03bd\u03b1 \u03c4\u03b1 \u03c3\u03c5\u03bb\u03bb\u03ac\u03b2\u03bf\u03c5\u03bd.<br>\u03a4\u03bf \u03b1\u03c0\u03bf\u03c4\u03ad\u03bb\u03b5\u03c3\u03bc\u03b1 \u03ae\u03c4\u03b1\u03bd \u03b7 \u03c3\u03c5\u03bb\u03bb\u03bf\u03b3\u03ae \u03bc\u03b5\u03c1\u03b9\u03ba\u03ce\u03bd \u03b4\u03b5\u03b9\u03b3\u03bc\u03ac\u03c4\u03c9\u03bd \u03c0\u03bf\u03c5 \u03bf Humboldt \u03ba\u03b1\u03b9 \u03bf \u03b2\u03bf\u03b7\u03b8\u03cc\u03c2 \u03c4\u03bf\u03c5,<strong>Bonpland <\/strong>\u03bc\u03b5\u03bb\u03ad\u03c4\u03b7\u03c3\u03b1\u03bd \u2013 \u03c5\u03c0\u03bf\u03b2\u03ac\u03bb\u03bf\u03bd\u03c4\u03b1\u03c2 \u03c4\u03bf\u03bd \u03b5\u03b1\u03c5\u03c4\u03cc \u03c4\u03bf\u03c5\u03c2 \u03c3\u03b5 \u03b5\u03c0\u03ce\u03b4\u03c5\u03bd\u03b5\u03c2 \u03ba\u03b1\u03b9 \u03b4\u03c5\u03bd\u03b7\u03c4\u03b9\u03ba\u03ac \u03b5\u03c0\u03b9\u03ba\u03af\u03bd\u03b4\u03c5\u03bd\u03b5\u03c2 \u03b3\u03b9\u03b1 \u03c4\u03b7 \u03b6\u03c9\u03ae \u03c4\u03bf\u03c5\u03c2, \u03b7\u03bb\u03b5\u03ba\u03c4\u03c1\u03b9\u03ba\u03ad\u03c2 \u03b5\u03ba\u03ba\u03b5\u03bd\u03ce\u03c3\u03b5\u03b9\u03c2 \u2013 \u03b1\u03bb\u03bb\u03ac \u03ba\u03b1\u03b9 \u03bf \u03b8\u03ac\u03bd\u03b1\u03c4\u03bf\u03c2 \u03b4\u03cd\u03bf \u03b1\u03bb\u03cc\u03b3\u03c9\u03bd.<br>\u03a4\u03b7\u03bd \u03b5\u03bc\u03c0\u03b5\u03b9\u03c1\u03af\u03b1 \u03c4\u03bf\u03c5 \u03b1\u03c5\u03c4\u03ae \u03c0\u03b5\u03c1\u03b9\u03ad\u03b3\u03c1\u03b1\u03c8\u03b5 8 \u03c7\u03c1\u03cc\u03bd\u03b9\u03b1 \u03b1\u03c1\u03b3\u03cc\u03c4\u03b5\u03c1\u03b1 \u03c3\u03b5 \u03ad\u03bd\u03b1 \u03ac\u03c1\u03b8\u03c1\u03bf \u03c0\u03bf\u03c5 \u03b4\u03b7\u03bc\u03bf\u03c3\u03b9\u03b5\u03cd\u03b8\u03b7\u03ba\u03b5 \u03bc\u03b5 \u03c4\u03af\u03c4\u03bb\u03bf: <strong><em>Observation on the Electric Eel of the New World<\/em><\/strong>.<\/p>\n\n\n\n<p>\u0397 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\u03c4\u03bc\u03b7\u03bc\u03b1\u03c4\u03b9\u03ba\u03ac \u03b1\u03c0\u03cc \u03c4\u03bf 1845 \u03c9\u03c2 \u03c4\u03bf 1862 \u2013 \u03bf \u03b5\u03c0\u03b9\u03c3\u03c4\u03ae\u03bc\u03bf\u03bd\u03b1\u03c2\/\u03ba\u03b1\u03bb\u03bb\u03b9\u03c4\u03ad\u03c7\u03bd\u03b7\u03c2\/\u03b5\u03be\u03b5\u03c1\u03b5\u03c5\u03bd\u03b7\u03c4\u03ae\u03c2 \u03c0\u03b1\u03c1\u03ad\u03b8\u03b5\u03c3\u03b5 \u03bc\u03b9\u03b1 \u03b5\u03c0\u03b9\u03c3\u03c4\u03b7\u03bc\u03bf\u03bd\u03b9\u03ba\u03ae \u03ba\u03b1\u03b9 \u03ba\u03b1\u03bb\u03bb\u03b9\u03c4\u03b5\u03c7\u03bd\u03b9\u03ba\u03ae \u03b1\u03c6\u03ae\u03b3\u03b7\u03c3\u03b7 \u03c4\u03bf\u03c5 \u03ba\u03cc\u03c3\u03bc\u03bf\u03c5 \u03c3\u03c4\u03b7\u03bd \u03bf\u03c0\u03bf\u03af\u03b1 \u03b5\u03be\u03ad\u03b8\u03b5\u03c3\u03b5 \u03c0\u03c1\u03c9\u03c4\u03bf\u03c0\u03bf\u03c1\u03b9\u03b1\u03ba\u03ad\u03c2 \u03b3\u03b9\u03b1 \u03c4\u03b7\u03bd \u03b5\u03c0\u03bf\u03c7\u03ae \u03c4\u03bf\u03c5 \u03b1\u03c0\u03cc\u03c8\u03b5\u03b9\u03c2, \u03cc\u03c0\u03c9\u03c2 \u03c0.\u03c7. \u03cc\u03c4\u03b9 \u03b7 \u0393\u03b7, \u03b1\u03c0\u03bf\u03c4\u03b5\u03bb\u03b5\u03af \u03ad\u03bd\u03b1\u03bd \u03b5\u03bd\u03b9\u03b1\u03af\u03bf \u03bf\u03c1\u03b3\u03b1\u03bd\u03b9\u03c3\u03bc\u03cc, \u03cc\u03c4\u03b9 \u03b7 \u03ba\u03b1\u03c4\u03b1\u03c3\u03c4\u03c1\u03bf\u03c6\u03ae \u03c4\u03c9\u03bd \u03b4\u03b1\u03c3\u03ce\u03bd \u03b1\u03c0\u03cc \u03c4\u03b7\u03bd \u03b1\u03c3\u03c4\u03b9\u03ba\u03bf\u03c0\u03bf\u03af\u03b7\u03c3\u03b7 \u03b4\u03b9\u03b1\u03c4\u03b1\u03c1\u03ac\u03c3\u03c3\u03b5\u03b9 \u03c4\u03bf\u03bd \u03ba\u03cd\u03ba\u03bb\u03bf \u03c4\u03bf\u03c5 \u03bd\u03b5\u03c1\u03bf\u03cd \u03ba\u03b1\u03b9 \u03b5\u03b3\u03ba\u03c5\u03bc\u03bf\u03bd\u03b5\u03af \u03ba\u03b9\u03bd\u03b4\u03cd\u03bd\u03bf\u03c5\u03c2 \u03b3\u03b9\u03b1 \u03c4\u03bf \u03ba\u03bb\u03af\u03bc\u03b1 \u03ba.\u03ac.<br>\u03a4\u03bf \u03c0\u03bd\u03b5\u03cd\u03bc\u03b1 \u03c0\u03bf\u03c5 \u03b4\u03b9\u03b1\u03c0\u03b5\u03c1\u03bd\u03bf\u03cd\u03c3\u03b5 \u03c4\u03bf \u03bc\u03b5\u03b3\u03ac\u03bb\u03bf \u03b1\u03c5\u03c4\u03cc \u03ad\u03c1\u03b3\u03bf \u03b1\u03c0\u03bf\u03c4\u03c5\u03c0\u03ce\u03b8\u03b7\u03ba\u03b5 \u03c3\u03c4\u03b7\u03bd \u03b5\u03b9\u03c3\u03b1\u03b3\u03c9\u03b3\u03ae \u03c4\u03bf\u03c5, \u03c3\u03c4\u03b7\u03bd \u03bf\u03c0\u03bf\u03af\u03b1 \u03bf Humbold \u03ad\u03b3\u03c1\u03b1\u03c6\u03b5:<\/p>\n\n\n\n<p>\u00ab<strong><em>\u0391\u03c5\u03c4\u03ae \u03b7 \u03b5\u03c0\u03b9\u03c3\u03c4\u03ae\u03bc\u03b7 \u03c4\u03bf\u03c5 \u039a\u03cc\u03c3\u03bc\u03bf\u03c5 \u03b4\u03b5\u03bd \u03c0\u03c1\u03ad\u03c0\u03b5\u03b9, \u03c9\u03c3\u03c4\u03cc\u03c3\u03bf, \u03bd\u03b1 \u03b8\u03b5\u03c9\u03c1\u03b7\u03b8\u03b5\u03af \u03c9\u03c2 \u03bc\u03b9\u03b1 \u03b1\u03c0\u03bb\u03ae \u03b5\u03b3\u03ba\u03c5\u03ba\u03bb\u03bf\u03c0\u03b1\u03b9\u03b4\u03b9\u03ba\u03ae \u03c3\u03c5\u03b3\u03ba\u03ad\u03bd\u03c4\u03c1\u03c9\u03c3\u03b7 \u03c4\u03c9\u03bd 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\u03b4\u03b9\u03b1\u03c0\u03b5\u03c1\u03bd\u03bf\u03cd\u03bd \u03c4\u03bf \u03c3\u03cd\u03bc\u03c0\u03b1\u03bd<\/em><\/strong>\u00bb.<\/p>\n\n\n\n<p>\u03a4\u03bf \u03ad\u03c1\u03b3\u03bf \u03b1\u03c5\u03c4\u03cc, \u03ad\u03b4\u03c9\u03c3\u03b5 \u03b9\u03c3\u03c7\u03c5\u03c1\u03ae \u03ce\u03b8\u03b7\u03c3\u03b7 \u03c3\u03c4\u03b7\u03bd \u03b5\u03c0\u03b9\u03c3\u03c4\u03b7\u03bc\u03bf\u03bd\u03b9\u03ba\u03ae \u03ad\u03c1\u03b5\u03c5\u03bd\u03b1 \u03c4\u03b7\u03c2 \u03b5\u03c0\u03bf\u03c7\u03ae\u03c2 \u03c4\u03bf\u03c5 \u03ba\u03b1\u03b9 \u03b5\u03c0\u03b7\u03c1\u03ad\u03b1\u03c3\u03b5 \u03c0\u03bf\u03bb\u03bb\u03bf\u03cd\u03c2 \u03bd\u03b5\u03b1\u03c1\u03bf\u03cd\u03c2 \u03b5\u03c0\u03b9\u03c3\u03c4\u03ae\u03bc\u03bf\u03bd\u03b5\u03c2, \u03c3\u03c5\u03bc\u03c0\u03b5\u03c1\u03b9\u03bb\u03b1\u03bc\u03b2\u03b1\u03bd\u03bf\u03bc\u03ad\u03bd\u03bf\u03c5 \u03ba\u03b1\u03b9 \u03c4\u03bf\u03c5 \u03bd\u03b5\u03b1\u03c1\u03bf\u03cd <strong>\u039a\u03ac\u03c1\u03bf\u03bb\u03bf\u03c5 \u0394\u03b1\u03c1\u03b2\u03af\u03bd\u03bf\u03c5<\/strong>, \u03c0\u03bf\u03c5 \u03b5\u03af\u03c7\u03b5 \u03c7\u03b1\u03c1\u03b1\u03ba\u03c4\u03b7\u03c1\u03af\u03c3\u03b5\u03b9 \u03c4\u03bf\u03bd Humboldt \u03c9\u03c2 \u00ab<em>\u03c4\u03bf\u03bd \u03c3\u03c0\u03bf\u03c5\u03b4\u03b1\u03b9\u03cc\u03c4\u03b5\u03c1\u03bf \u03b5\u03c0\u03b9\u03c3\u03c4\u03ae\u03bc\u03bf\u03bd\u03b1 \u03b5\u03be\u03b5\u03c1\u03b5\u03c5\u03bd\u03b7\u03c4\u03ae \u03c0\u03bf\u03c5 \u03ad\u03b6\u03b7\u03c3\u03b5 \u03c0\u03bf\u03c4\u03ad<\/em>\u00bb. \u039a\u03b9 \u03bf <strong>Wallace<\/strong> \u03cc\u03bc\u03c9\u03c2, \u03c0\u03c1\u03b9\u03bd \u03b1\u03c0\u03bf\u03c4\u03bf\u03bb\u03bc\u03ae\u03c3\u03b5\u03b9 \u03c4\u03bf 1848 \u03c4\u03bf \u03bc\u03b1\u03ba\u03c1\u03cd \u03ba\u03b1\u03b9 \u03b5\u03c0\u03af\u03c0\u03bf\u03bd\u03bf \u03c4\u03b1\u03be\u03af\u03b4\u03b9 \u03c4\u03bf\u03c5 \u03c3\u03c4\u03b7 \u039d\u03cc\u03c4\u03b9\u03bf \u0391\u03bc\u03b5\u03c1\u03b9\u03ba\u03ae \u2013 \u03c0\u03c1\u03bf\u03ca\u03cc\u03bd \u03c4\u03bf\u03c5 \u03bf\u03c0\u03bf\u03af\u03bf\u03c5 \u03ae\u03c4\u03b1\u03bd \u03b7 \u03b1\u03bd\u03b5\u03be\u03ac\u03c1\u03c4\u03b7\u03c4\u03b1 \u03b1\u03c0\u03cc \u03c4\u03bf\u03bd \u0394\u03b1\u03c1\u03b2\u03af\u03bd\u03bf, \u03c3\u03cd\u03bb\u03bb\u03b7\u03c8\u03b7 \u03c4\u03b7\u03c2 \u03bc\u03b5\u03b3\u03b1\u03bb\u03b5\u03b9\u03ce\u03b4\u03bf\u03c5\u03c2 \u03b9\u03b4\u03ad\u03b1\u03c2 \u03c4\u03b7\u03c2 \u03a6\u03c5\u03c3\u03b9\u03ba\u03ae\u03c2 \u0395\u03c0\u03b9\u03bb\u03bf\u03b3\u03ae\u03c2 \u2013 \u03b5\u03af\u03c7\u03b5 \u03be\u03b5\u03ba\u03bf\u03ba\u03b1\u03bb\u03af\u03c3\u03b5\u03b9 \u03c4\u03bf \u03ad\u03c1\u03b3\u03bf \u03c4\u03bf\u03c5 Humbold.<\/p>\n\n\n\n<p>\u0393\u03b9\u03b1 \u03c4\u03bf \u03c4\u03ad\u03bb\u03bf\u03c2, \u03c0\u03b1\u03c1\u03b1\u03b8\u03ad\u03c4\u03c9 \u03bc\u03b9\u03b1 \u03b1\u03ba\u03bf\u03c5\u03b1\u03c1\u03ad\u03bb\u03b1 \u03c4\u03bf\u03c5 Humbold, \u03c3\u03c4\u03b7\u03bd \u03bf\u03c0\u03bf\u03af\u03b1 \u03c0\u03b1\u03c1\u03bf\u03c5\u03c3\u03b9\u03ac\u03b6\u03b5\u03c4\u03b1\u03b9 \u03b7 \u00ab<strong><em>\u0393\u03b5\u03c9\u03b3\u03c1\u03b1\u03c6\u03b9\u03ba\u03ae \u03ba\u03b1\u03c4\u03b1\u03bd\u03bf\u03bc\u03ae \u03c4\u03c9\u03bd \u03c6\u03c5\u03c4\u03ce\u03bd \u03c4\u03bf\u03c5 \u0399\u03c3\u03b7\u03bc\u03b5\u03c1\u03b9\u03bd\u03bf\u03cd<\/em><\/strong>\u00bb \u03bc\u03b5 \u03c0\u03b1\u03c1\u03ac\u03b8\u03b5\u03c3\u03b7 \u03c4\u03c9\u03bd \u03c3\u03c5\u03c3\u03c4\u03b7\u03bc\u03b1\u03c4\u03b9\u03ba\u03ce\u03bd \u03bf\u03bd\u03bf\u03bc\u03b1\u03c3\u03b9\u03ce\u03bd \u03c4\u03bf\u03c5\u03c2 \u03ba\u03b1\u03b9 \u03c3\u03c4\u03bf\u03bd \u03af\u03b4\u03b9\u03bf \u03c4\u03bf\u03bd \u03c0\u03af\u03bd\u03b1\u03ba\u03b1, \u03b1\u03bb\u03bb\u03ac \u03ba\u03b1\u03b9 \u03c3\u03c4\u03b1 \u03c5\u03c0\u03bf\u03bc\u03bd\u03ae\u03bc\u03b1\u03c4\u03b1, \u03b1\u03c1\u03b9\u03c3\u03c4\u03b5\u03c1\u03ac \u03ba\u03b1\u03b9 \u03b4\u03b5\u03be\u03b9\u03ac \u03c4\u03bf\u03c5.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"700\" height=\"445\" src=\"https:\/\/biology4u.gr\/wp-content\/uploads\/2026\/04\/humboldplantsandes.webp\" alt=\"\" class=\"wp-image-15778\" srcset=\"https:\/\/biology4u.gr\/wp-content\/uploads\/2026\/04\/humboldplantsandes.webp 700w, https:\/\/biology4u.gr\/wp-content\/uploads\/2026\/04\/humboldplantsandes-300x191.webp 300w, https:\/\/biology4u.gr\/wp-content\/uploads\/2026\/04\/humboldplantsandes-580x369.webp 580w\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" \/><\/figure>\n\n\n\n<p>\u0391\u03be\u03af\u03b6\u03b5\u03b9 \u03bd\u03b1 \u03b5\u03c0\u03b9\u03c3\u03b7\u03bc\u03ac\u03bd\u03bf\u03c5\u03bc\u03b5 \u03cc\u03c4\u03b9 \u03c3\u03c4\u03b7\u03bd \u0395\u03bb\u03bb\u03ac\u03b4\u03b1 \u03ad\u03c7\u03b5\u03b9 \u03b5\u03ba\u03b4\u03bf\u03b8\u03b5\u03af \u03b1\u03c0\u03cc \u03c4\u03b9\u03c2 \u03b5\u03ba\u03b4\u03cc\u03c3\u03b5\u03b9\u03c2 <strong>\u03a1\u03bf\u03c0\u03ae,<\/strong> \u03ad\u03bd\u03b1 \u03b2\u03b9\u03b2\u03bb\u03af\u03bf \u03bc\u03b5 \u03c4\u03af\u03c4\u03bb\u03bf: \u00ab<strong><em>\u0397 \u0395\u03c0\u03b9\u03bd\u03cc\u03b7\u03c3\u03b7 \u03c4\u03b7\u03c2 \u03a6\u03cd\u03c3\u03b7\u03c2 \u2013 \u039f \u039d\u03ad\u03bf\u03c2 \u039a\u03cc\u03c3\u03bc\u03bf\u03c2 \u03c4\u03bf\u03c5 \u0391\u03bb\u03b5\u03be\u03ac\u03bd\u03c4\u03b5\u03c1 \u03c6\u03bf\u03bd \u03a7\u03bf\u03cd\u03bc\u03c0\u03bf\u03bb\u03c4<\/em><\/strong>\u00bb \u03c0\u03bf\u03c5 \u03c4\u03bf \u03c3\u03c5\u03bd\u03ad\u03b3\u03c1\u03b1\u03c8\u03b5 \u03b7 \u0392\u03c1\u03b5\u03c4\u03b1\u03bd\u03af\u03b4\u03b1 \u03b9\u03c3\u03c4\u03bf\u03c1\u03b9\u03ba\u03cc\u03c2 \u03ba\u03b1\u03b9 \u03c3\u03c5\u03b3\u03b3\u03c1\u03b1\u03c6\u03ad\u03b1\u03c2 <strong>\u0386\u03bd\u03c4\u03c1\u03b5\u03b1 \u0393\u03bf\u03c5\u03bb\u03c6<\/strong>.<\/p>\n\n\n\n<p>\u03a4\u03bf \u03b2\u03b9\u03b2\u03bb\u03af\u03bf \u03ad\u03c7\u03b5\u03b9 \u03b1\u03c0\u03bf\u03c3\u03c0\u03ac\u03c3\u03b5\u03b9 \u03b4\u03b5\u03ba\u03ac\u03b4\u03b5\u03c2 \u03b4\u03b9\u03b5\u03b8\u03bd\u03ae \u03b2\u03c1\u03b1\u03b2\u03b5\u03af\u03b1, \u03b5\u03bd\u03ce \u03bf\u03b9 \u03a4\u03ac\u03b9\u03bc\u03c2 \u03c4\u03b7\u03c2 \u039d\u03ad\u03b1\u03c2 \u03a5\u03cc\u03c1\u03ba\u03b7\u03c2 \u03c4\u03bf \u03ad\u03c7\u03bf\u03c5\u03bd \u03c4\u03bf\u03c0\u03bf\u03b8\u03b5\u03c4\u03ae\u03c3\u03b5\u03b9 \u03b1\u03bd\u03ac\u03bc\u03b5\u03c3\u03b1 \u03c3\u03c4\u03b1 10 \u03ba\u03b1\u03bb\u03cd\u03c4\u03b5\u03c1\u03b1 \u03b2\u03b9\u03b2\u03bb\u03af\u03b1 \u03c4\u03b7\u03c2 \u03c7\u03c1\u03bf\u03bd\u03b9\u03ac\u03c2.<\/p>\n\n\n\n<p>*<em>\u03a4\u03b1 \u03b7\u03bb\u03b5\u03ba\u03c4\u03c1\u03bf\u03c6\u03cc\u03c1\u03b1 \u00ab\u03c7\u03ad\u03bb\u03b9\u03b1\u00bb, \u03c3\u03c4\u03b7\u03bd \u03c0\u03c1\u03b1\u03b3\u03bc\u03b1\u03c4\u03b9\u03ba\u03cc\u03c4\u03b7\u03c4\u03b1 \u03b5\u03af\u03bd\u03b1\u03b9 <\/em><strong><em>\u03c4\u03b5\u03bb\u03b5\u03cc\u03c3\u03c4\u03b5\u03bf\u03b9<\/em><\/strong><em> \u03c0\u03bf\u03c5 \u03b1\u03bd\u03ae\u03ba\u03bf\u03c5\u03bd \u03c3\u03c4\u03b7\u03bd \u03c4\u03ac\u03be\u03b7 \u03c4\u03c9\u03bd <\/em><strong><em>Gymnotiformes<\/em><\/strong><em>.<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u03a3\u03ae\u03bc\u03b5\u03c1\u03b1 \u03b8\u03b1 \u03c3\u03b1\u03c2 \u03b4\u03b9\u03b7\u03b3\u03b7\u03b8\u03ce \u03ad\u03bd\u03b1 \u03c0\u03b5\u03c1\u03b9\u03c3\u03c4\u03b1\u03c4\u03b9\u03ba\u03cc \u03b1\u03c0\u03cc \u03c4\u03b7 \u03b6\u03c9\u03ae \u03b5\u03bd\u03cc\u03c2 \u03c3\u03b7\u03bc\u03b1\u03bd\u03c4\u03b9\u03ba\u03bf\u03cd \u03c0\u03bf\u03bb\u03c5\u03bc\u03b1\u03b8\u03bf\u03cd\u03c2 \u0393\u03b5\u03c1\u03bc\u03b1\u03bd\u03bf\u03cd \u03b5\u03be\u03b5\u03c1\u03b5\u03c5\u03bd\u03b7\u03c4\u03ae, \u03bf \u03bf\u03c0\u03bf\u03af\u03bf\u03c2 \u03bc\u03ac\u03bb\u03bb\u03bf\u03bd \u03ad\u03c7\u03b5\u03b9 \u03be\u03b5\u03c7\u03b1\u03c3\u03c4\u03b5\u03af, \u03c0\u03b1\u03c1\u03ac \u03c4\u03bf \u03cc\u03c4\u03b9 \u03c3\u03c4\u03b7\u03bd \u03b5\u03c0\u03bf\u03c7\u03ae \u03c4\u03bf\u03c5 \u03b1\u03bd\u03b1\u03b3\u03bd\u03c9\u03c1\u03b9\u03b6\u03cc\u03c4\u03b1\u03bd \u03c9\u03c2 \u03ad\u03bd\u03b1\u03c2 \u03b1\u03c0\u03cc \u03c4\u03bf\u03c5\u03c2 \u03b4\u03b9\u03b1\u03c3\u03b7\u03bc\u03cc\u03c4\u03b5\u03c1\u03bf\u03c5\u03c2 \u03b1\u03bd\u03b8\u03c1\u03ce\u03c0\u03bf\u03c5\u03c2, \u03ba\u03b1\u03b9 \u03c0\u03b1\u03c1\u03ac \u03c4\u03bf \u03cc\u03c4\u03b9 \u03b7 \u03c3\u03c5\u03bc\u03b2\u03bf\u03bb\u03ae \u03c4\u03bf\u03c5 \u03c3\u03c4\u03b7\u03bd \u03bf\u03b9\u03ba\u03bf\u03bb\u03bf\u03b3\u03af\u03b1, \u03c3\u03c4\u03b7 \u03b2\u03b9\u03bf\u03b3\u03b5\u03c9\u03b3\u03c1\u03b1\u03c6\u03af\u03b1, \u03c3\u03c4\u03b7 \u03bc\u03b5\u03c4\u03b5\u03c9\u03c1\u03bf\u03bb\u03bf\u03b3\u03af\u03b1 \u03ba\u03b1\u03b9 \u03c4\u03b7 \u03b3\u03b5\u03c9\u03c6\u03c5\u03c3\u03b9\u03ba\u03ae \u03b5\u03af\u03bd\u03b1\u03b9 \u03b1\u03bd\u03b1\u03bc\u03c6\u03b9\u03c3\u03b2\u03ae\u03c4\u03b7\u03c4\u03b7. \u039f \u03b5\u03be\u03b5\u03c1\u03b5\u03c5\u03bd\u03b7\u03c4\u03ae\u03c2 \u03bf\u03bd\u03bf\u03bc\u03b1\u03b6\u03cc\u03c4\u03b1\u03bd Alexander von&#8230;<\/p>\n","protected":false},"author":1,"featured_media":15775,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_wp_rev_ctl_limit":""},"categories":[15],"tags":[118],"class_list":["post-15773","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-15","tag-118"],"_links":{"self":[{"href":"https:\/\/biology4u.gr\/index.php?rest_route=\/wp\/v2\/posts\/15773","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/biology4u.gr\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/biology4u.gr\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/biology4u.gr\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/biology4u.gr\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=15773"}],"version-history":[{"count":2,"href":"https:\/\/biology4u.gr\/index.php?rest_route=\/wp\/v2\/posts\/15773\/revisions"}],"predecessor-version":[{"id":15780,"href":"https:\/\/biology4u.gr\/index.php?rest_route=\/wp\/v2\/posts\/15773\/revisions\/15780"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/biology4u.gr\/index.php?rest_route=\/wp\/v2\/media\/15775"}],"wp:attachment":[{"href":"https:\/\/biology4u.gr\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=15773"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/biology4u.gr\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=15773"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/biology4u.gr\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=15773"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}