Abstract
IN a paper discussing the distribution of Chthamalus stellatus in British waters, H. B. Moore and J. A. Kitching1 attempted to link up the distribution of this barnacle with that of Atlantic water. Recently, Kitching2 suggests that air temperature may be the limiting factor, abandoning to some extent the Atlantic water theory, but adding “although from the known facts the latter is equally possible”. Southward3 has recently recorded the general occurrence of Chthamalus in the Isle of Man, and he too points out that there appears to be some correlation between air temperature and the distribution of the species. In the map of Moore and Kitching, Chthamalus is unrecorded between Howth and Belfast Lough and given as absent from the east coast of Antrim but as present at Portstewart on the north coast. It was also recorded as absent from the Isle of Man.
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References
Moore and Kitching, J. Mar. Biol. Assoc., 23 521 (1939).
Kitching, Nature, 165, 820 (1950).
Southward, Nature, 165 408 (1950).
MacDonald, Ann. Mag. Nat. Hist., (11), 7 (1941).
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WILLIAMS, G. Distribution of Chthamalus stellatus on the Shores of North-East Ireland. Nature 166, 311 (1950). https://doi.org/10.1038/166311a0
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DOI: https://doi.org/10.1038/166311a0
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