{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,21]],"date-time":"2026-04-21T20:21:00Z","timestamp":1776802860260,"version":"3.51.2"},"reference-count":53,"publisher":"Cambridge University Press (CUP)","issue":"6","license":[{"start":{"date-parts":[[2024,5,9]],"date-time":"2024-05-09T00:00:00Z","timestamp":1715212800000},"content-version":"unspecified","delay-in-days":8,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":["cambridge.org"],"crossmark-restriction":true},"short-container-title":["Parasitology"],"published-print":{"date-parts":[[2024,5]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>Sculpins (coastrange and slimy) and sticklebacks (ninespine and threespine) are widely distributed fishes cohabiting 2 south-central Alaskan lakes (Aleknagik and Iliamna), and all these species are parasitized by cryptic diphyllobothriidean cestodes in the genus <jats:italic>Schistocephalus<\/jats:italic>. The goal of this investigation was to test for host-specific parasitic relationships between sculpins and sticklebacks based upon morphological traits (segment counts) and sequence variation across the NADH1 gene. A total of 446 plerocercoids was examined. Large, significant differences in mean segment counts were found between cestodes in sculpin (mean = 112; standard deviation [<jats:sc>s.d.<\/jats:sc>] = 15) and stickleback (mean = 86; <jats:sc>s.d.<\/jats:sc> = 9) hosts within and between lakes. Nucleotide sequence divergence between parasites from sculpin and stickleback hosts was 20.5%, and Bayesian phylogenetic analysis recovered 2 well-supported clades of cestodes reflecting intermediate host family (i.e. sculpin, Cottidae <jats:italic>vs<\/jats:italic> stickleback, Gasterosteidae)<jats:bold>.<\/jats:bold> Our findings point to the presence of a distinct lineage of cryptic <jats:italic>Schistocephalus<\/jats:italic> in sculpins from Aleknagik and Iliamna lakes that warrants further investigation to determine appropriate evolutionary and taxonomic recognition.<\/jats:p>","DOI":"10.1017\/s0031182024000593","type":"journal-article","created":{"date-parts":[[2024,5,9]],"date-time":"2024-05-09T01:15:40Z","timestamp":1715217340000},"page":"626-633","update-policy":"https:\/\/doi.org\/10.1017\/policypage","source":"Crossref","is-referenced-by-count":2,"title":["Distinct evolutionary lineages of <i>Schistocephalus<\/i> parasites infecting co-occurring sculpin and stickleback fishes in Alaska"],"prefix":"10.1017","volume":"151","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-6175-8777","authenticated-orcid":false,"given":"David C.","family":"Heins","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5697-2736","authenticated-orcid":false,"given":"Kristine N.","family":"Moody","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9313-9487","authenticated-orcid":false,"given":"Martin C.","family":"Arostegui","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Brian S.","family":"Harmon","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Michael 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