Size-dependent dispersal by Goniopora stokesi corals at Semporna, eastern Sabah, Malaysia
Free-living corals of Goniopora stokesi Milne Edwards & Haime, 1851 (Scleractinia: Poritidae) were observed at various sites during the Semporna Marine Ecological Expedition(SMEE 2010) in eastern Sabah, from 29 November to 18 December 2010. At two out of 63 sites, dense aggrega tions (75- 100%...
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my.ums.eprints.203962021-08-21T04:02:57Z https://eprints.ums.edu.my/id/eprint/20396/ Size-dependent dispersal by Goniopora stokesi corals at Semporna, eastern Sabah, Malaysia Bert W. Hoeksema Zarinah Waheed SH Aquaculture. Fisheries. Angling Free-living corals of Goniopora stokesi Milne Edwards & Haime, 1851 (Scleractinia: Poritidae) were observed at various sites during the Semporna Marine Ecological Expedition(SMEE 2010) in eastern Sabah, from 29 November to 18 December 2010. At two out of 63 sites, dense aggrega tions (75- 100% cover) with extended polyps had formed only on the sandy bottom of depressions (at 16-20 m depth). These corals could not leave, unlike scattered G. stokesi corals found on sandy slopes, which may migrate in downward direction (Hoeksema 1988). The largest coral patch (Fig. 1a) was c. 200 m2 (Denawan I.) and the other only c. 40 m2 (Larapan I.).Some colonies showed budding through the formation of polyp balls (Fig. 1b), which is a known trait in this species (Boschma 1923; Rosen and Taylor 1969). A few parent individuals had loose polyp balls around them, which had dropped and rolled to available space nearby. Most large specimens were dome-shaped with their dead, fl attened base on the sand or partly buried inside it (Fig. 1b). Only a few were found in upside-down position or laying on a side (Fig. 1c). The heavy weight and fl at underside of these large corals would likely hinder any further migration and may render them practically immobile. Our observations suggest that free-living G. stokesi corals can disperse easily when they are small and may eventually form dense fi elds when they are physically entrapped by the surrounding reef. 2011 Article PeerReviewed text en https://eprints.ums.edu.my/id/eprint/20396/1/Size%20dependent%20dispersal%20by%20Goniopora%20stokesi%20corals%20at%20Semporna.pdf text en https://eprints.ums.edu.my/id/eprint/20396/7/Size-dependent%20dispersal%20by%20Goniopora%20stokesi%20corals%20at%20Semporna%2C%20eastern%20Sabah%2C%20Malaysia.pdf Bert W. Hoeksema and Zarinah Waheed (2011) Size-dependent dispersal by Goniopora stokesi corals at Semporna, eastern Sabah, Malaysia. Galaxea, Journal of Coral Reef Studies, 13. pp. 9-10. |
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SH Aquaculture. Fisheries. Angling Bert W. Hoeksema Zarinah Waheed Size-dependent dispersal by Goniopora stokesi corals at Semporna, eastern Sabah, Malaysia |
description |
Free-living corals of Goniopora stokesi Milne Edwards &
Haime, 1851 (Scleractinia: Poritidae) were observed at various sites during the Semporna Marine Ecological Expedition(SMEE 2010) in eastern Sabah, from 29 November to 18 December 2010. At two out of 63 sites, dense aggrega tions (75- 100% cover) with extended polyps had formed only on the sandy bottom of depressions (at 16-20 m depth). These corals could not leave, unlike scattered G. stokesi corals found on sandy slopes, which may migrate in downward direction (Hoeksema 1988). The largest coral patch (Fig. 1a) was c. 200 m2 (Denawan I.) and the other only c. 40 m2
(Larapan I.).Some colonies showed budding through the formation of polyp balls (Fig. 1b), which is a known trait in this species (Boschma 1923; Rosen and Taylor 1969). A few parent individuals had loose polyp balls around them, which had dropped and rolled to available space nearby. Most large
specimens were dome-shaped with their dead, fl attened base
on the sand or partly buried inside it (Fig. 1b). Only a few
were found in upside-down position or laying on a side (Fig.
1c). The heavy weight and fl at underside of these large corals would likely hinder any further migration and may render them practically immobile. Our observations suggest that free-living G. stokesi corals can disperse easily when they are small and may eventually form dense fi elds when they are physically entrapped by the surrounding reef. |
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Article |
author |
Bert W. Hoeksema Zarinah Waheed |
author_facet |
Bert W. Hoeksema Zarinah Waheed |
author_sort |
Bert W. Hoeksema |
title |
Size-dependent dispersal by Goniopora stokesi corals at Semporna, eastern Sabah, Malaysia |
title_short |
Size-dependent dispersal by Goniopora stokesi corals at Semporna, eastern Sabah, Malaysia |
title_full |
Size-dependent dispersal by Goniopora stokesi corals at Semporna, eastern Sabah, Malaysia |
title_fullStr |
Size-dependent dispersal by Goniopora stokesi corals at Semporna, eastern Sabah, Malaysia |
title_full_unstemmed |
Size-dependent dispersal by Goniopora stokesi corals at Semporna, eastern Sabah, Malaysia |
title_sort |
size-dependent dispersal by goniopora stokesi corals at semporna, eastern sabah, malaysia |
publishDate |
2011 |
url |
https://eprints.ums.edu.my/id/eprint/20396/1/Size%20dependent%20dispersal%20by%20Goniopora%20stokesi%20corals%20at%20Semporna.pdf https://eprints.ums.edu.my/id/eprint/20396/7/Size-dependent%20dispersal%20by%20Goniopora%20stokesi%20corals%20at%20Semporna%2C%20eastern%20Sabah%2C%20Malaysia.pdf https://eprints.ums.edu.my/id/eprint/20396/ |
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1760229709266812928 |
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13.2014675 |