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8 January 2018 Cosmopolitan polychaetes – fact or fiction? Personal and historical perspectives
Pat Hutchings, Elena Kupriyanova
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In the biogeographical and taxonomical literature before the 1980s there was a wide perception that widespread, often referred to as ‘cosmopolitan’, species were very common among polychaetes. Here we discuss the origins of this perception, how it became challenged, and our current understanding of marine annelid distributions today. We comment on the presence of widely distributed species in the deep sea and on artificially extended ranges of invasive species that have been dispersed by anthropogenic means. We also suggest the measures needed to revolve the status of species with reported cosmopolitan distributions and stress the value of museum collections and vouchers to be associated with DNA sequences in resolving species distributions.

© CSIRO 2018
Pat Hutchings and Elena Kupriyanova "Cosmopolitan polychaetes – fact or fiction? Personal and historical perspectives," Invertebrate Systematics 32(1), 1-9, (8 January 2018).
Received: 6 April 2017; Accepted: 1 June 2017; Published: 8 January 2018
deep sea
Hydroides elegans
Hydroides norvegica
invasive species
marine annelids
Marphysa sanquinea
Owenia fusiformis
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