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Egg development, hatching rhythm and moult patterns in Paralomis spinosissima (Decapoda: Anomura: Paguroidea: Lithodidae) from South Georgia waters (Southern Ocean)

Reid, W.D.K.; Watts, J.; Clarke, S.; Belchier, M.; Thatje, S.. 2007 Egg development, hatching rhythm and moult patterns in Paralomis spinosissima (Decapoda: Anomura: Paguroidea: Lithodidae) from South Georgia waters (Southern Ocean). Polar Biology, 30 (9). 1213-1218.

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Abstract/Summary

Larval release, hatching rhythms and moult patterns were examined in a captive population of the subantarctic lithodid, Paralomis spinosissima from the South Georgia and Shag Rocks region. Larvae hatched throughout the year with the majority of females starting to release larvae at the end of the austral summer and beginning of autumn. Larval release continued over a period of up to 9 weeks with high variability in the numbers that hatched each day. A similar seasonal pattern to hatching was evident in the moulting of females. Intermoult period for two adult females (CL = 63 and 85 mm) ranged from 894 to 1,120 days while an intermoult period for males was estimated to be in excess of 832 days. The results are consistent with other species of Paralomis and are discussed in relation to physiological and environmental adaptations to the cold-water conditions south of the Antarctic Convergence.

Item Type: Publication - Article
Programmes: BAS Programmes > Other
ISSN: 07224060
Additional Keywords: Crabs; Cold adaptation; Reproduction;
NORA Subject Terms: Biology and Microbiology
Ecology and Environment
Date made live: 03 Aug 2010 14:39
URI: http://nora.nerc.ac.uk/id/eprint/10212

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