New Zealand Journal of Marine and Freshwater Research abstracts

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Effect of stage of larval development on the settlement of the abalone, Haliotis iris

GRAEME A. MOSS LENNARDJ.TONG

MAF Fisheries
Ministry of Agriculture and Fisheries
P. O. Box 297, Wellington, New Zealand

Abstract Larvae of the abalone, Haliotis iris, settle on Lithothamnion-cowered surfaces in preference to bare rock and acrylic surfaces. The number of rows of chitinised teeth in the radula was used to stage the larvae. Larvae with 3 or more rows of teeth will rapidly settle but larvae with 8 or more rows of teeth settle, stay, and survive up to 5 days in greater numbers than earlier stages. The behaviour of different stage larvae at settlement is described. These results are discussed in relation to hatchery production of juvenile abalone and the use of larvae to enhance natural populations of abalone.

Keywords Haliotis iris; larval development; settlement; Lithothamnion

New Zealand Journal of Marine and Freshwater Research, 1992, Vol. 26: The Royal Society of New Zealand 1992
Received 21 June 1991; accepted 15 October 1991

PDF file of entire paper: medium quality (411K); (scanned from paper original: notes about this process)

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