New Zealand Journal of Marine and Freshwater Research abstracts

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LARVAL DEVELOPMENT IN LUNELLA SMARAGDA (GASTROPODA: TURBINIDAE)

K. R. Grange*

Department of Zoology, University of Auckland, Private Bag, Auckland, New Zealand

Abstract Larvae of Lunella smaragda (Gmelin) are described from laboratory spawnings and plankton hauls. The short-lived planktotrophic larvae were able to be reared up to the stage of torsion, but no further. The larvae are like those described for other turbinid species, although previous descriptions are somewhat inadequate. Fertilisation is external; the young hatch 24 h later as green trochophores and change into veligers after a further 24 h. Torsion begins 70 h after fertilisation, and settlement probably occurs shortly after, within 4 d of fertilisation.

N.Z. Journal of Marine and Freshwater Research 10 (3) : 517-25. Sept. 1976
Received 22 October 1975

PDF file of entire paper: medium quality (563K); (scanned from paper original: notes about this process)

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