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Irregular recruitment of the echinoid Echinocyamus pusillus and its implications for biological traits analysis

Warwick, R.M. and Pearce, B. (2020) Irregular recruitment of the echinoid Echinocyamus pusillus and its implications for biological traits analysis. Journal of the Marine Biological Association of the United Kingdom . pp. 1-5.

Link to Published Version: https://doi.org/10.1017/S0025315420000934
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Abstract

Size-frequency analysis of the echinoid Echinocyamus pusillus from six offshore areas in the southern North Sea and eastern English Channel reveal five distinct cohorts, suggesting a lifespan of five years. In all six individual areas one or more year-groups are absent, due to the unsuccessful recruitment of planktonic larvae to the seabed in some years, giving a false impression of a shorter lifespan. A relatively long lifespan and planktotrophic larval development are remarkable for such a small species, which reaches a maximum test length of 7.3 mm in the area, such traits being more typical of large-sized macrobenthic species. The feeding mode is akin to that of many meiobenthic taxa. The architecture of the test confers exceptional strength and resilience to mechanical perturbation.

Item Type: Journal Article
Publisher: Cambridge University Press
Copyright: © 2020 Marine Biological Association of the United Kingdom
URI: http://researchrepository.murdoch.edu.au/id/eprint/58712
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