Artificial light impairs local attraction to females in male glow-worms.
Artificial light impairs local attraction to females in male glow-worms.
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DOI：
10.1242/jeb.245760
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发表时间：
2023-06-01
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影响因子：
--
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夜间人工照明（ALAN）对昆虫的负面影响越来越被认识到，并被认为是昆虫数量下降的一个可能原因。然而，支持ALAN对昆虫影响的行为机制仍不清楚。ALAN干扰了雌性萤火虫用来吸引雄性萤火虫的生物发光信号，从而扰乱了繁殖。为了确定支持这种ALAN效应的行为机制，我们量化了白色照明对y形迷宫中雄性到达雌性模仿LED的能力的影响。我们表明，随着照明强度的增加，男性达到模仿女性的LED的比例下降。更亮的照明也增加了雄性到达雌性模仿LED所需的时间。这是雄性花更多时间的结果：(1)在y形迷宫的中央臂；（二）将头缩在头罩下面。当光照消失时，这些效应会迅速逆转，这表明雄性萤火虫厌恶白光。我们的研究结果表明，ALAN不仅阻止了雄性萤火虫接近雌性萤火虫，而且还增加了它们接近雌性萤火虫的时间，以及它们躲避光照的时间。这表明ALAN对雄性萤火虫的影响超出了之前在野外实验中观察到的范围，并提出了ALAN对其他在野外实验中未被发现的昆虫物种具有类似行为影响的可能性。在较亮的照明下，较少的雄性萤火虫到达y形迷宫中模仿雌性萤火虫的LED，这需要更长的时间，部分原因是它们把头缩回头罩下的时间更长。
The negative effects of artificial lighting at night (ALAN) on insects are increasingly recognised and have been postulated as one possible cause of declines in insect populations. Yet, the behavioural mechanisms underpinning ALAN effects on insects remain unclear. ALAN interferes with the bioluminescent signal female glow-worms use to attract males, disrupting reproduction. To determine the behavioural mechanisms that underpin this effect of ALAN, we quantified the effect of white illumination on males' ability to reach a female-mimicking LED within a Y-maze. We show that as the intensity of illumination increases, the proportion of males reaching the female-mimicking LED declines. Brighter illumination also increases the time taken by males to reach the female-mimicking LED. This is a consequence of males spending more time: (i) in the central arm of the Y-maze; and (ii) with their head retracted beneath their head shield. These effects reverse rapidly when illumination is removed, suggesting that male glow-worms are averse to white light. Our results show that ALAN not only prevents male glow-worms from reaching females, but also increases the time they take to reach females and the time they spend avoiding exposure to light. This demonstrates that the impacts of ALAN on male glow-worms extend beyond those previously observed in field experiments, and raises the possibility that ALAN has similar behavioural impacts on other insect species that remain undetected in field experiments. Under brighter illumination, fewer glow-worm males reach a female-mimicking LED in a Y-maze, taking longer to do so, partly because they retract their head beneath their head-shield for longer.
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影响因子：
11.6
作者：
Davies TW;Bennie J;Inger R;de Ibarra NH;Gaston KJ
通讯作者：
Gaston KJ
影响因子：
13.6
作者：
Boyes DH;Evans DM;Fox R;Parsons MS;Pocock MJO
通讯作者：
Pocock MJO
影响因子：
2.8
作者：
Booth, D;Stewart, AJA;Osorio, D
通讯作者：
Osorio, D
影响因子：
3.3
作者：
De Cock, R
通讯作者：
De Cock, R
影响因子：
2.2
作者：
LALL, AB
通讯作者：
LALL, AB