New Zealand Journal of Marine and Freshwater Research abstracts

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ECOLOGY OF DILOMA NOVAEZELANDIAE AT PORTOBELLO, NEW ZEALAND

Sheila J. Logan*

Portobello Marine Laboratory, University of Otago, P.O. Box 8, Portobello, New Zealand

Abstract The greatest population density of D. novaezelandiae occurred between 0.8 m and 1.4 m above Chart Datum. The trochid was found to prefer a hard, substratum to a. soft substratum, and there was a positive correlation of organic content of the sediment with density of D. novaezelandiae. As the population density decreased towards low water the individual shell size increased. Size: weight relationships were calculated and the results showed that dry flesh weight and dry shell weight were both proportional to the cube of the shell diameter.

NZ. Journal of Marine and Freshwater Research 10 (4) : 699-714. Dec. 1976
Received 30 April 1975; revision received 30 March. 1976.

PDF file of entire paper: medium quality (998K); (scanned from paper original: notes about this process)

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