Facial Recognition in a Group-Living Cichlid Fish

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Kohda_0-407188.pdf
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2015
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Kohda, Masanori
Hotta, Takashi
Kosaka, Naoya
Karino, Kenji
Tanaka, Hirokazu
Taniyama, Masami
Takeyama, Tomohiro
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PLoS ONE. 2015, 10(11), e0142552. eISSN 1932-6203. Available under: doi: 10.1371/journal.pone.0142552
Zusammenfassung

The theoretical underpinnings of the mechanisms of sociality, e.g. territoriality, hierarchy, and reciprocity, are based on assumptions of individual recognition. While behavioural evidence suggests individual recognition is widespread, the cues that animals use to recognise individuals are established in only a handful of systems. Here, we use digital models to demonstrate that facial features are the visual cue used for individual recognition in the social fish Neolamprologus pulcher. Focal fish were exposed to digital images showing four different combinations of familiar and unfamiliar face and body colorations. Focal fish attended to digital models with unfamiliar faces longer and from a further distance to the model than to models with familiar faces. These results strongly suggest that fish can distinguish individuals accurately using facial colour patterns. Our observations also suggest that fish are able to rapidly (≤ 0.5 sec) discriminate between familiar and unfamiliar individuals, a speed of recognition comparable to primates including humans.

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570 Biowissenschaften, Biologie
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ISO 690KOHDA, Masanori, Alex JORDAN, Takashi HOTTA, Naoya KOSAKA, Kenji KARINO, Hirokazu TANAKA, Masami TANIYAMA, Tomohiro TAKEYAMA, 2015. Facial Recognition in a Group-Living Cichlid Fish. In: PLoS ONE. 2015, 10(11), e0142552. eISSN 1932-6203. Available under: doi: 10.1371/journal.pone.0142552
BibTex
@article{Kohda2015-11-25Facia-38868,
  year={2015},
  doi={10.1371/journal.pone.0142552},
  title={Facial Recognition in a Group-Living Cichlid Fish},
  number={11},
  volume={10},
  journal={PLoS ONE},
  author={Kohda, Masanori and Jordan, Alex and Hotta, Takashi and Kosaka, Naoya and Karino, Kenji and Tanaka, Hirokazu and Taniyama, Masami and Takeyama, Tomohiro},
  note={Article Number: e0142552}
}
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