conWrmed the monophyletic grouping of the Nacellidae exclusively species with teleplanic larvae capable of long dis-limpets relative to the sister taxon Patellidae. The Nacelli-dae classiWcation was Wrst proposed in 1975 by Golikov and Starobogatov (1975), but was not widely accepted until Lindberg...
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| Format: | Text |
| Language: | English |
| Published: |
2004
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| Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.551.4546 http://www.biol.canterbury.ac.nz/merg/publications/pdfs/Goldstien S et al 2005.pdf |
| Summary: | conWrmed the monophyletic grouping of the Nacellidae exclusively species with teleplanic larvae capable of long dis-limpets relative to the sister taxon Patellidae. The Nacelli-dae classiWcation was Wrst proposed in 1975 by Golikov and Starobogatov (1975), but was not widely accepted until Lindberg and Hickman (1986) conWrmed the familial split through shell microstructure analysis. New Zealand species of Cellana represent the southern most limits of the genus range (Powell, 1973) and are geo-graphically placed between two potential sources of species immigrants: the tropics and the sub-Antarctics. Two spe-cies, Cellana ornata and Cellana radians, are distributed around the entire coastline of New Zealand. Cellana Xava and Cellana denticulata are restricted to the north east coast while Cellana strigilis redimiculum is restricted to the south tance dispersal and do not include limpet taxa (Fleming, 1979). Based on laboratory investigations of larval longevity of the sister taxon Patella (Branch, 1981), nacellids are thought to have restricted dispersal potential, not conducive to oceanic transport. A lecithotrophic period of 7–11 days fol-lows the free spawning of gametes and a non-feeding trocho-phore stage of 1–2 days. This short period of larval dispersal and the homing behaviour of the adults suggest low levels of continental interchange and high endemism for the genus. Eocene fossil deposits from Oregon, USA (Lindberg and Hickman, 1986) have been used for calibration of the mini-mum separation time between Nacella and Cellana (Kouf- |
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