Beetle bioluminescence outshines extant aerial predators

Beetle bioluminescence outshines extant aerial predators
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甲虫的生物发光能力超过了现存的空中捕食者

DOI:
10.1098/rspb.2022.0821
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发表时间:
2022
期刊:
Proceedings of the Royal Society B: Biological Sciences
影响因子:
--
通讯作者:
Bybee, Seth M.
Bybee, Seth M.
中科院分区:
--
文献类型:
--
作者:
Powell, Gareth S.;Saxton, Natalie A.;Pacheco, Yelena M.;Stanger-Hall, Kathrin F.;Martin, Gavin J.;Kusy, Dominik;Felipe Lima Da Silveira, Luiz;Bocak, Ladislav;Branham, Marc A.;Bybee, Seth M.

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我们对生物发光的时间和起源知之甚少,特别是作为一种躲避捕食者的策略。然而,了解其起源的时间可以帮助阐明这种生态重要信号的演变。使用萤火虫,一个普遍的生物发光组,生物发光主要功能作为警戒和性信号,我们探索这个信号的起源,在他们潜在的捕食者的背景下。使用基因组规模的数据集进行发散时间估计,提供了一个强大的估计萤火虫生物发光的起源作为一个陆地和空中信号。我们的结果恢复了陆生甲虫生物发光的起源在141.17(122.63-161.17)Ma和133.18 Ma的萤火虫气生发光(117.86-152.47)Ma,使用以Lambridae为重点的大型数据集;陆地生物发光年龄为148.03(130.12-166.80)Ma,空气生物发光年龄为104.97(99.00-120.90)Ma。这些年龄早于所有已知的现存空中捕食者(即蝙蝠和鸟类)的起源,并支持更古老的陆地捕食者(猎蝽、青蛙、地面甲虫、蜥蜴、蛇、狩猎蜘蛛和收割者)作为陆地生物发光的驱动者甲虫。这些年龄也支持这样的假设,即性信号可能是空中萤火虫这种信号的原始功能。
We understand very little about the timing and origins of bioluminescence, particularly as a predator avoidance strategy. Understanding the timing of its origins, however, can help elucidate the evolution of this ecologically important signal. Using fireflies, a prevalent bioluminescent group where bioluminescence primarily functions as aposematic and sexual signals, we explore the origins of this signal in the context of their potential predators. Divergence time estimations were performed using genomic-scale datasets providing a robust estimate for the origin of firefly bioluminescence as both a terrestrial and as an aerial signal. Our results recover the origin of terrestrial beetle bioluminescence at 141.17 (122.63–161.17) Ma and firefly aerial bioluminescence at 133.18 (117.86–152.47) Ma using a large dataset focused on Lampyridae; and terrestrial bioluminescence at 148.03 (130.12–166.80) Ma, with the age of aerial bioluminescence at 104.97 (99.00–120.90) Ma using a complementary Elateroidea dataset. These ages pre-date the origins of all known extant aerial predators (i.e. bats and birds) and support much older terrestrial predators (assassin bugs, frogs, ground beetles, lizards, snakes, hunting spiders and harvestmen) as the drivers of terrestrial bioluminescence in beetles. These ages also support the hypothesis that sexual signalling was probably the original function of this signal in aerial fireflies.
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DOI: --
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