. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 102 103 104 105 106 107 108 109 sperm/ml 100 80 5? ~ 60 o ra 40 |S1 1 20. Platygyra sinensis 102 103 10" 105 106 107 108 109 sperm/ml Figure 2. Sperm dilution series tor Mmiiipura tlixiuilti on two different nights (a. b), and for Favites pentagonu (c) and Plutvxyrti w«iviw\ (d). Each series was run independently on separate nights. Values represent mean and ranges from three replicate vials. were released, samples of seawater were taken from the surface adjacent to the buoys, and from the surface mid- way between them.
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 102 103 104 105 106 107 108 109 sperm/ml 100 80 5? ~ 60 o ra 40 |S1 1 20. Platygyra sinensis 102 103 10" 105 106 107 108 109 sperm/ml Figure 2. Sperm dilution series tor Mmiiipura tlixiuilti on two different nights (a. b), and for Favites pentagonu (c) and Plutvxyrti w«iviw\ (d). Each series was run independently on separate nights. Values represent mean and ranges from three replicate vials. were released, samples of seawater were taken from the surface adjacent to the buoys, and from the surface mid- way between them. The water samples were collected in 1 liter plastic bottles and transferred within 30 min to the laboratory where they were mixed with laboratory- spawned eggs in the manner described for the sperm di- lutions. Although the field water samples occasionally contained some eggs, these were removed prior to mixing. In an attempt to track patches of sperm near the surface during the hours after spawning, drogues ("X" vanes floating in the top 15 cm of the water column) were de- ployed above areas of actively spawning corals. Although these drogues track the near surface layer under calm conditions, they are not reliable indicators of water move- ment in the first few millimeters once wind speeds exceed . As weather conditions during most spawning periods v calm, with occasional slight breezes, the drogues t to increase the chances of finding patches of x-rm concentration. The drogues were tracked i ,. and samples were taken both ad- jacent to (\\ md between the drogues at 30-60 minute inter'.; During spawn '•••itata at Magnetic Island in 1989, natural (//; /ation rates were examined by means of a series e neuston net tows made between drogues. In au, ion. dip samples were taken from any visible slicks of coral spawn that were encoun- tered. Sampling with tows or dips was concurrent with the water sampling described above. The resulting eggs and embryos were subseq
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
