スズメバチの女王が姿を消すと、その熱帯のコロニーでは激しい権力闘争が勃発する。しかし、新たな研究により、一部のメス蜂は争いを避け、コロニーの崩壊を防ぐために不可欠な作業を継続していることが明らかになった。
ユニバーシティ・カレッジ・ロンドンの研究チームは、パナマに生息する熱帯のアシナガバチ「Polistes canadensis」のコロニーを調査した。研究チームが確立されたコロニーから女王蜂を取り除くと、メス蜂たちの間で優位をめぐる攻撃的な争いが直ちに発生した。複数の蜂がトップの座を競い合ったことで、本来の社会秩序は急速に崩壊した。
A new field study shows that honey bees deprived of pollen become more aggressive and display signs of stress. Researchers simulated a pollen shortage over five weeks to examine the effects on bee behavior and health.
AIによるレポート
A hybrid population of honeybees in Southern California demonstrates natural resistance to Varroa mites, a major threat to bee colonies. Researchers at UC Riverside found these bees carry 68% fewer mites and require far less chemical treatment. The discovery, detailed in a new study, suggests early-life defenses in larvae may hold the key.
Buff-tailed bumblebees have demonstrated an ability to recognize rhythmic patterns, surprising scientists who thought it required a large brain. Researchers trained the insects to distinguish sequences of flashing lights and vibrations, akin to Morse code. The findings suggest even small-brained animals can process abstract rhythms.
AIによるレポート
A recent guide offers practical steps for beekeepers to spot and handle colony illnesses.
Scientists observed a rare tropical katydid changing color from bright pink to green over 11 days in Panama. The transformation helps the insect mimic young rainforest leaves that start pink before maturing green. Researchers describe it as a survival strategy rather than a mutation.
AIによるレポート
Researchers at the University of East Anglia have found that Seychelles warblers with closer social ties share more similar gut microbes, particularly anaerobic types spread through direct contact. The study on Cousin Island suggests social interactions drive this microbial exchange. Similar effects likely occur among humans living together.