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The role of vision for navigation in the crown-of-thorns seastar, Acanthaster planci

Title data

Sigl, Robert ; Steibl, Sebastian ; Laforsch, Christian:
The role of vision for navigation in the crown-of-thorns seastar, Acanthaster planci.
In: Scientific Reports. Vol. 6 (August 2016) . - No. 30834.
ISSN 2045-2322
DOI: https://doi.org/10.1038/srep30834

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Abstract in another language

Coral reefs all over the Indo-Pacific suffer from substantial damage caused by the crown-of-thorns seastar Acanthaster planci, a voracious predator that moves on and between reefs to seek out its coral prey. Chemoreception is thought to guide A. planci. As vision was recently introduced as another sense involved in seastar navigation, we investigated the potential role of vision for navigation in A. planci. We estimated the spatial resolution and visual field of the compound eye using histological sections and morphometric measurements. Field experiments in a semi-controlled environment revealed that vision in A. planci aids in finding reef structures at a distance of at least 5 m, whereas chemoreception seems to be effective only at very short distances. Hence, vision outweighs chemoreception at intermediate distances. A. planci might use vision to navigate between reef structures and to locate coral prey, therefore improving foraging efficiency, especially when multidirectional currents and omnipresent chemical cues on the reef hamper chemoreception.

Further data

Item Type: Article in a journal
Refereed: Yes
Additional notes: BAYCEER137280
Institutions of the University: Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Biology > Chair Animal Ecology I
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Biology > Chair Animal Ecology I > Chair Animal Ecology I - Univ.-Prof. Dr. Christian Laforsch
Research Institutions
Research Institutions > Research Centres
Research Institutions > Research Centres > Bayreuth Center of Ecology and Environmental Research- BayCEER
Faculties
Faculties > Faculty of Biology, Chemistry and Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Biology
Result of work at the UBT: Yes
DDC Subjects: 500 Science
Date Deposited: 12 Jan 2018 10:47
Last Modified: 06 Apr 2018 09:57
URI: https://eref.uni-bayreuth.de/id/eprint/41305