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

Created 23/06/2025

Updated 23/06/2025

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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). To describe the vertical distribution of Lissoclinum patella and investigate limitations by predators and photactic behaviour on larval dispersal. Fish predators: Pomacentrus popei (=P. moluccensis), Glyphidodontops rollandi, G. talboti, P. lepidogenys, Abudefduf valgiensis, a black damselfish and a yellow wrasse (the only nonpomacentrid fish observed).

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Additional Info

Field Value
Title Larval dispersal of the ascidian, Lissoclinum patella at Davies Reef, Great Barrier Reef
Language eng
Licence Not Specified
Landing Page https://data.gov.au/data/en/dataset/b0ac4fd8-4238-4ca1-86eb-64e70e207885
Contact Point
Australian Ocean Data Network
reception@aims.gov.au
Reference Period 20/11/2017
Geospatial Coverage
Map data © OpenStreetMap contributors
{
  "coordinates": [
    147.64167,
    -18.825
  ],
  "type": "Point"
}
Data Portal data.gov.au

Data Source

This dataset was originally found on data.gov.au "Larval dispersal of the ascidian, Lissoclinum patella at Davies Reef, Great Barrier Reef". Please visit the source to access the original metadata of the dataset:
https://data.gov.au/data/dataset/larval-dispersal-of-the-ascidian-lissoclinum-patella-at-davies-reef-great-barrier-reef1