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A detailed investigation of the visual system and visual ecology of the Barrier Reef anemonefish, Amphiprion akindynos.


ABSTRACT: Vision plays a major role in the life of most teleosts, and is assumingly well adapted to each species ecology and behaviour. Using a multidisciplinary approach, we scrutinised several aspects of the visual system and ecology of the Great Barrier Reef anemonefish, Amphiprion akindynos, including its orange with white patterning, retinal anatomy and molecular biology, its symbiosis with anemones and sequential hermaphroditism. Amphiprion akindynos possesses spectrally distinct visual pigments and opsins: one rod opsin, RH1 (498?nm), and five cone opsins, SWS1 (370?nm), SWS2B (408?nm), RH2B (498?nm), RH2A (520?nm), and LWS (554?nm). Cones were arranged in a regular mosaic with each single cone surrounded by four double cones. Double cones mainly expressed RH2B (53%) in one member and RH2A (46%) in the other, matching the prevailing light. Single cones expressed SWS1 (89%), which may serve to detect zooplankton, conspecifics and the host anemone. Moreover, a segregated small fraction of single cones coexpressed SWS1 with SWS2B (11%). This novel visual specialisation falls within the region of highest acuity and is suggested to increase the chromatic contrast of Amphiprion akindynos colour patterns, which might improve detection of conspecifics.

SUBMITTER: Stieb SM 

PROVIDER: S-EPMC6848076 | BioStudies | 2019-01-01

SECONDARY ACCESSION(S): 10.18637/jss.v034.i02

REPOSITORIES: biostudies

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