Publikation:

Polarized light detection in bumblebees varies with light intensity and is mediated by both the ocelli and compound eyes

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Datum

2024

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Araújo, Priscila
Belušič, Gregor
Ilić, Marko
Pfeiffer, Keram
Baird, Emily

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Biology Letters. Royal Society of London. 2024, 20(9), 20240299. ISSN 1744-9561. eISSN 1744-957X. Verfügbar unter: doi: 10.1098/rsbl.2024.0299

Zusammenfassung

Like many insects, bumblebees use polarized light (PL) to orient and navigate. The celestial PL pattern is strongest when the sun is close to the horizon, during the dim light of dawn and dusk. In the dim light, the sensitivity of the compound eyes may not be sufficient for detecting PL or landmarks, and it has previously been hypothesized that bumblebees rely on PL from their more sensitive ocelli to navigate at dawn and dusk. Here, we tested this hypothesis using a combination of electrophysiological and behavioural tests. Specifically, we investigate whether bumblebee ocelli can detect PL and explore how the PL contribution from the ocelli and compound eyes is affected by light intensity. We find that bumblebee ocelli do indeed have PL sensitivity and that PL information can be used to guide behaviour in dim light. In bright light, however, both the compound eyes and ocelli are important for the detection of PL. Our results support the hypothesis that bumblebees use PL information from the ocelli at the low light levels that occur around dawn and dusk, and this may support their ability to forage during these periods.

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Fachgebiet (DDC)
570 Biowissenschaften, Biologie

Schlagwörter

dorsal rim area, dim light, vision, navigation, celestial cue

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ISO 690ARAÚJO, Priscila, Gregor BELUŠIČ, Marko ILIĆ, James J. FOSTER, Keram PFEIFFER, Emily BAIRD, 2024. Polarized light detection in bumblebees varies with light intensity and is mediated by both the ocelli and compound eyes. In: Biology Letters. Royal Society of London. 2024, 20(9), 20240299. ISSN 1744-9561. eISSN 1744-957X. Verfügbar unter: doi: 10.1098/rsbl.2024.0299
BibTex
@article{Araujo2024-09Polar-71353,
  year={2024},
  doi={10.1098/rsbl.2024.0299},
  title={Polarized light detection in bumblebees varies with light intensity and is mediated by both the ocelli and compound eyes},
  number={9},
  volume={20},
  issn={1744-9561},
  journal={Biology Letters},
  author={Araújo, Priscila and Belušič, Gregor and Ilić, Marko and Foster, James J. and Pfeiffer, Keram and Baird, Emily},
  note={Article Number: 20240299}
}
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