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Environmentally influenced variability in the morphology of Cinachyrella australiensis (Carter 1886) (Porifera: Spirophorida: Tetillidae)

McDonald, Justin I., Hooper, John N. A. and McGuinness, Keith A. (2002). Environmentally influenced variability in the morphology of Cinachyrella australiensis (Carter 1886) (Porifera: Spirophorida: Tetillidae). Marine and Freshwater Research,53(1):79-84.

Document type: Journal Article
Citation counts: Scopus Citation Count Cited 26 times in Scopus Article | Citations

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Title Environmentally influenced variability in the morphology of Cinachyrella australiensis (Carter 1886) (Porifera: Spirophorida: Tetillidae)
Author McDonald, Justin I.
Hooper, John N. A.
McGuinness, Keith A.
Journal Name Marine and Freshwater Research
Publication Date 2002
Volume Number 53
Issue Number 1
ISSN 1323-1650   (check CDU catalogue open catalogue search in new window)
Scopus ID 2-s2.0-0036170833
Start Page 79
End Page 84
Total Pages 6
Place of Publication Collingwood, Vic Australia
Publisher CSIRO Publishing
Field of Research 0602 - Ecology
HERDC Category C1 - Journal Article (DEST)
Abstract The influence of environmental variability on body form and tissue structure of Cinachyrella australiensis is reported for populations from three sites within Darwin Harbour, Northern Territory, Australia, that varied considerably in hydrological conditions. External morphology of these sponges differed among sites ranging from typical spherical shapes to flattened forms. A large proportion of dry weight consisted of inorganic matter, i.e. silica spicules, varying between 62.9% and 78.2%. Sites with highest water velocity and sediment size were significantly correlated with sponge populations having the greatest inorganic content and lowest organic cellular content and the thickest oxea. Thicker oxea may in part account for the higher structural content of sponges at these sites. There was no significant difference in oxea length among sites. It is concluded that sponges subjected to highly perturbed environs with large water flow and sedimentation regimes may devote more energy to spicule reinforcement relative to organic content. These robust sponges have the potential to make an important structural contribution to their habitats.
DOI http://dx.doi.org/10.1071/MF00153   (check subscription with CDU E-Gateway service for CDU Staff and Students  check subscription with CDU E-Gateway in new window)
 
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