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Proc Biol Sci. 2010 Jun 22;277(1689):1843-8. doi: 10.1098/rspb.2009.2248. Epub 2010 Feb 10.

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

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1
Department of Cell and Organism Biology, Lund University, Lund, Sweden. megsoc@gmail.com

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 light-shaft 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.

PMID:
20147327
PMCID:
PMC2871879
DOI:
10.1098/rspb.2009.2248
[Indexed for MEDLINE]
Free PMC Article
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