約3800万年前の琥珀に閉じ込められたシロアリのオスとメスが、現代のシロアリと同じ様式で「求愛行動」をすることが、沖縄科学技術大学院大学の調査で分かった。シロアリのペアは相手が動けなくなっても同じ場所にとどまることも確認できた。絶滅した種の行動様式について時代を超えて分析できるのは稀少。生物の群れの行動の進化の過程や、協調行動の様式を調べる足がかりにしたいという。 |
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