Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/45079
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Type: Journal article
Title: Living in a potentially toxic environment: comparisons of endofauna in two congeneric sponges from the Great Barrier Reef
Author: Skilleter, G.
Russell, B.
Degnan, B.
Garson, M.
Citation: Marine Ecology-Progress Series, 2005; 304:67-75
Publisher: Inter-research
Issue Date: 2005
ISSN: 0171-8630
1616-1599
Statement of
Responsibility: 
Greg A. Skilleter, Bayden D. Russell, Bernard M. Degnan, Mary J. Garson
Abstract: The abundance and community composition of the endofauna in 2 species of sponge, Haliclona sp. 1 and Haliclona sp. 2 (phylum Porifera: order Haplosclerida), were examined at different sites on the slope at Heron Island Reef, in the southern Great Barrier Reef, on 2 separate occasions. Both species of Haliclona occupy similar habitats on the reef slope and are often found living adjacent to each other, but the major groups of secondary metabolites and the gross external morphology in the 2 species of sponge are different. The 2 species of sponge supported significantly different endofaunal communities, with Haliclona sp. 2 supporting 3 to 4 times more individuals than Haliclona sp. 1. Fewer demersal zooplankton (copepods), nematodes and some peracarid crustaceans were found in Haliclona sp. 1 compared with Haliclona sp. 2. There were also differences in the numbers of spionid, nereidid and syllid polychaetes living in the 2 species of sponge. The only taxon that was more abundant in Haliclona sp. 1 than Haliclona sp. 2 was the spionid Polydorella prolifera, and this difference was only evident on 1 of the 2 occasions. The amount of free space (pores, channels, cavities) for a given weight of sponge was only 19% greater in Haliclona sp. 2 than in Haliclona sp. 1, suggesting other factors, such as the differences in the allelochemicals, may have a role in determining the numbers and types of animals living in these 2 species of sponge.
Keywords: Endofauna; Sponges; Haliclona; Coral reefs; Great Barrier Reef
Description: © Inter-Research 2005
RMID: 0020077533
DOI: 10.3354/meps304067
Appears in Collections:Earth and Environmental Sciences publications
Environment Institute publications

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