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Taxonomy and ecology of British Spirorbidae (Polychaeta)
Knight-Jones, P.; Knight-Jones, E.W. (1977). Taxonomy and ecology of British Spirorbidae (Polychaeta). J. Mar. Biol. Ass. U.K. 57(2): 453-499.
In: Journal of the Marine Biological Association of the United Kingdom. Cambridge University Press/Marine Biological Association of the United Kingdom: Cambridge. ISSN 0025-3154, more
Peer reviewed article  

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    Polychaeta [WoRMS]; Spirorbinae Chamberlin, 1919 [WoRMS]; Marine

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  • Knight-Jones, P.
  • Knight-Jones, E.W.

    Eighteen spp are distinguished, 15 from Plymouth, including 6 Spirorbis. This gen, centred in the NE Atlantic, includes 2 sibling relationships, of S. spirorbis with S. rupestris, and S. corallinae with S. inornatus. The latter is abundant in western Britain, where it forms ecological races, one previously designated reptans, another here named himanthaliae. Spirorbis cuneatus has affinities with the Pacific subgenus Spirorbella. Spirorbis tridentatus was inadequately described which led to erroneous records of eg S. medius from Ireland. The holarctic and north temperate Circeis includes C. armoricana and C. spirillum, the latter distinguished by cross-striated collar setae. The former includes in Britain 2 ecological subspecies, here named paguri and fragilis. The northern Spirorbides vitrea is best placed in a subgenus of Paradexiospira. Paralaeospira malardi and Protolaeospira striata represent northern extensions of Southern Ocean genera. The pantropical Pileolaria militaris extends to Lundy and Lough Ine. Pileolaria rosepigmentata is a recent immigrant, established at Portsmouth. Pileolaria heteropoma is represented by populations which lack an opercular spine and are confined to deeper water. Pileolaria granulata has affinities with the nearactic genus Sinistrella. The widely distributed Janua pagenstecheri attains great abundance and diversity of habitat off Europe, suggesting a centre of origin here. Janua (Dexiospira) pseudocorrugata is abundant at Plymouth and extends to Lundy and Galway, whilst J. (D.) brasiliensis is another immigrant to Porsmouth, where it is associated with Sargassum muticum.

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