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Larval dispersal of the ascidian, Lissoclinum patella at Davies Reef, Great Barrier Reef

Created 24/06/2017

Updated 09/10/2017

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Eight 30 m transects were made at Davies Reef and 139 Lissoclinum patella colonies from the intertidal to 25 m depth were recorded.

Depth (5, 10, 15, 20 m), total swimming time (s), and the fate (eaten by fish; captured by coral polyps or zoanthids, settled, lost) of observed larvae (n=133) were recorded.

Two experiments were conducted on the reef. To examine the maximum potential swimming time, a clear plastic box was placed on the bottom and examined every 10 mins: if a larvae was moving and had not everted its adhesive papillae it was deemed as 'swimming' (3 replicates of 10 larvae). Secondly, to examine the phototactic response (phototaxis), a 0.5 m long black chamber with a clear window at one end was placed on the bottom and larvae injected into it through a port (clear or dark): settlement distance was measured (cm) after 2 h (3 replicates of 20 larvae).

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Title Larval dispersal of the ascidian, Lissoclinum patella at Davies Reef, Great Barrier Reef
Language English
Licence Other
Landing Page https://devweb.dga.links.com.au/data/dataset/a72b96a7-c191-40c4-b14c-fd3cb503c468
Contact Point
Australian Institute of Marine Science
adc@aims.gov.au
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Map data © OpenStreetMap contributors
Data Portal Data.gov.au