{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,12,12]],"date-time":"2025-12-12T13:22:21Z","timestamp":1765545741991},"reference-count":35,"publisher":"Cambridge University Press (CUP)","issue":"6","license":[{"start":{"date-parts":[[2012,2,6]],"date-time":"2012-02-06T00:00:00Z","timestamp":1328486400000},"content-version":"unspecified","delay-in-days":0,"URL":"https:\/\/www.cambridge.org\/core\/terms"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Parasitology"],"published-print":{"date-parts":[[2012,5]]},"abstract":"<jats:title>SUMMARY<\/jats:title><jats:p>Branchiobdellidans or crayfish worms are clitellate annelids and ectosymbionts of freshwater crayfish. An investigation of branchiobdellidan infestation was undertaken in a population of endangered white-clawed crayfish (<jats:italic>Austropotamobius pallipes<\/jats:italic>) in the river Aire, UK. Thirty two percent of animals were infested either by the adult parasite or their cocoons (<jats:italic>n<\/jats:italic>=107). Parasite burden increased with host size, but did not differ with sex. Observations of crayfish gill tissue revealed a strong positive relationship between melanization of filaments and parasite prevalence and burden. Taxonomic identification revealed that 1 species of branchiobdellidan was present,<jats:italic>Branchiobdella astaci<\/jats:italic>. The first sequences were generated for this species and phylogenetically analysed alongside published sequences for 5 other branchiobdellidan species in Europe. The position of<jats:italic>B. astaci<\/jats:italic>within the genus<jats:italic>Branchiobdella<\/jats:italic>was confirmed, and it was found to cluster as a sister group to<jats:italic>B. parasita<\/jats:italic>.<\/jats:p>","DOI":"10.1017\/s003118201100240x","type":"journal-article","created":{"date-parts":[[2012,2,6]],"date-time":"2012-02-06T15:22:56Z","timestamp":1328541776000},"page":"774-780","source":"Crossref","is-referenced-by-count":14,"title":["Branchiobdellidan infestation on endangered white-clawed crayfish (<i>Austropotamobius pallipes<\/i>) in the UK"],"prefix":"10.1017","volume":"139","author":[{"given":"P. J.","family":"ROSEWARNE","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"R. J. G.","family":"MORTIMER","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"A. 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