Visual pigment in the lens eyes of the box ra jellyfish Chiropsella bronzie

Megan O'Connor*, Anders Garm, Justin N. Marshall, Nathan S. Hart, Peter Ekström, Charlotta Skogh, Dan Eric Nilsson

*Corresponding author for this work

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Box jellyfish (Cubomedusae) possess a unique visual system comprising 24 eyes of four morphological types. Moreover, box jellyfish display several visually guided behaviours, including obstacle avoidance and lightshaft attractance. It is largely unknown what kind of visual information box jellyfish use for carrying out these behaviours. Brightness contrast is almost certainly involved, but it is also possible that box jellyfish extract colour information from their surroundings. The possible presence of colour vision in box jellyfish has previously been investigated using behavioural, electrophysiological and immunohistochemical methods. However, the results from these studies are to some degree conflicting and inconclusive. Here, we present results from an investigation into the visual system of the box jellyfish Chiropsella bronzie, using microspectrophotometry and immunohistochemistry. Our results strongly indicate that only one type of visual pigment is present in the upper and lower lens eyes with a peak absorbance of approximately 510 nm. Additionally, the visual pigment appears to undergo bleaching, similar to that of vertebrate visual pigments.

Original languageEnglish
Pages (from-to)1843-1848
Number of pages6
JournalProceedings of the Royal Society B: Biological Sciences
Volume277
Issue number1689
DOIs
Publication statusPublished - 22 Jun 2010
Externally publishedYes

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