Investigation on Ephemeral Occurrence of Echiuran Listriolobus brevirostris in Japan

Authors:Elliot Walters

Abstract


The current report of the primarily Indo-West Pacific echiuran Listriolobus brevirostris appears to be a further example. It was collected among benthos samples (voucher specimens) from northeastern Osaka Bay between 1999 and 2001, or recorded in the field between 1995 and 2002, as an echiuran new to Japanese waters, and has remained uncollected since 2003. The report of L. brevirostris from Osaka Bay may be the first reliable indication of an invasive introduction of an exotic echiuran species to Japan. Taxonomic and biological accounts of the population are given below, and the causes of ephemerality of the Osaka Bay population briefly considered.

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References


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