عندما تختفي ملكة الدبابير، تندلع صراعات عنيفة على السلطة داخل مستعمرتها الاستوائية. وتُظهر أبحاث جديدة أن بعض الإناث يتجنبن هذه النزاعات ويواصلن القيام بالمهام الأساسية للحيلولة دون انهيار المستعمرة.
درس باحثون في كلية لندن الجامعية مستعمرات من دبابير الورق الاستوائية، Polistes canadensis، في بنما. وقام الباحثون بإزالة الملكات من مجموعات مستقرة وراقبوا تنافساً عدوانياً فورياً بين الإناث للسيطرة. وسرعان ما انهار النظام الاجتماعي الطبيعي مع تنافس العديد من الدبابير على المركز القيادي.
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.
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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.
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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.
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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.