Record Details

Acropora aspera coral fecundity in reef slope and reef flat habitats in Heron Island (Southern Great Barrier Reef, Capricorn Bunker)

CSIRO RDS Repository

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Title Acropora aspera coral fecundity in reef slope and reef flat habitats in Heron Island (Southern Great Barrier Reef, Capricorn Bunker)
 
Creator Morane Le Nohaic
 
Subject Conservation and biodiversity
Marine and estuarine ecology (incl. marine ichthyology)
 
Description The dataset contains information of Acropora aspera coral fecundity in reef flat and reef slope habitats. All data originates from Heron Island corals in the southern Great Barrier Reef (Capricorn Bunker).
In November 2021, a total of 40x colonies of Acropora aspera were checked for presence of eggs, tagged, and sampled on the reef flat (<1m depth) and the reef slope (~5m depth) of Heron Island. For each site (x2 sites, distanced by >100m), the sampling was proceeded in the following way:
- 10x colonies were tagged on the reef flat and 10x colonies were tagged on the reef slope
- 1x fragment was collected from each tagged colony and preserved in 5% formalin and seawater (total of 40x fragments)
The fixed samples were then decalcified in 3-10% hydrochloric acid. For each decalcified sample, 30 polyps were randomly selected and inspected for presence/absence of eggs to estimate percentages of reproductive polyps within a branch. Among the polyps inspected for each sample, a minimum of 10 gravid polyps were dissected under the microscope to identify, count, and measure ovaries, spermaries, and eggs. Scaled pictures of each polyp were taken with a camera for measurements. For size measurements, the width and length of each element are recorded. Measurements were performed with ImageJ.

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Publisher CSIRO
 
Contributor Peter Mumby
Christopher Doropoulos
Selina Ward
 
Date 2023-08-29
 
Type —
 
Format —
 
Identifier csiro:60098
 
Language —
 
Coverage —
 
Rights —