ミツバチにとって睡眠は軽い問題ではない(Sleep is No Light Matter for Bees)

ad

2024-11-12 カリフォルニア大学サンディエゴ校(UCSD)

カリフォルニア大学サンディエゴ校の研究者は、人工光がミツバチの概日リズムを乱し、睡眠時間を減少させることを発見しました。この影響は、ミツバチの重要な役割である受粉活動に悪影響を及ぼす可能性があります。研究では、通常の暗闇での睡眠をとる群と、継続的な人工光にさらされた群を比較し、後者では睡眠時間の減少と行動の変化が観察されました。この結果は、都市部での人工光がミツバチの健康と生態系に与える影響を示唆しています。

<関連情報>

ミツバチが人工光にさらされ続けると、睡眠リズムが変化し、睡眠が妨げられる Exposure to constant artificial light alters honey bee sleep rhythms and disrupts sleep

Ashley Y. Kim,Aura Velazquez,Belen Saavedra,Benjamin Smarr & James C. Nieh
Scientific Reports  Published:12 November 2024
DOI:https://doi.org/10.1038/s41598-024-73378-9

ミツバチにとって睡眠は軽い問題ではない(Sleep is No Light Matter for Bees)

Abstract

Artificial light at night (ALAN) changes animal behavior in multiple invertebrates and vertebrates and can result in decreased fitness. However, ALAN effects have not been studied in European honey bees (Apis mellifera), an important pollinator in which foragers show strong circadian rhythmicity. Colonies can be exposed to ALAN in swarm clusters, when bees cluster outside the nest on hot days and evenings, and, in limited cases, when they build nests in the open. We captured and maintained foragers in incubated cages and subjected them to constant light (LL), constant dark (DD), or 12 h light:12 h dark (LD) cycle, and observed them with infrared cameras. After 79 h, there was a significant interaction of treatment and time because LL bees slept less. In detail, the bees maintained a regular sleep pattern for three days but LL bees showed a shift on the fourth day. LL bees had the largest sleep differences from LD controls, with trends of lengthened periods and increased phase misalignment from both LD and DD bees. LL bees also experienced significantly more disturbances from their nestmates and preferred to sleep in the lower portion of the cages, which had significantly lower light intensity. These findings suggest that ALAN can disrupt the sleep of honey bee foragers, which has implications for their behavior and overall colony health.

生物環境工学
ad
ad
Follow
ad
タイトルとURLをコピーしました