Sexual segregation of Echinorhynchus borealis von Linstow, 1901 (Acanthocephala) in the gut of burbot (Lota lota Linnaeus)
Helminths often occupy defined niches in the gut of their definitive hosts. In the dioecious acanthocephalans, adult males and females usually have similar gut distributions, but sexual site segregation has been reported in at least some species. We studied the intestinal distribution of the acantho...
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ftjyvaeskylaenun:oai:jyx.jyu.fi:123456789/47670 2024-02-04T09:59:22+01:00 Sexual segregation of Echinorhynchus borealis von Linstow, 1901 (Acanthocephala) in the gut of burbot (Lota lota Linnaeus) Tuomainen, Arto Valtonen, Tellervo Benesh, Daniel 2015 0 application/pdf http://urn.fi/URN:NBN:fi:jyu-201511113632 eng eng Akademie Ved Ceske Republiky Folia Parasitologica 1803-6465 0 62 10.14411/fp.2015.061 Tuomainen, A., Valtonen, T., & Benesh, D. (2015). Sexual segregation of Echinorhynchus borealis von Linstow, 1901 (Acanthocephala) in the gut of burbot (Lota lota Linnaeus). Folia Parasitologica , 62 , Article 061. https://doi.org/10.14411/fp.2015.061 CONVID_25280938 TUTKAID_67714 URN:NBN:fi:jyu-201511113632 http://urn.fi/URN:NBN:fi:jyu-201511113632 © 2015 the Authors. Published by Akademie Ved Ceske Republiky. This is an Open Access article distributed under the terms of the Creative Commons Attribution License. openAccess http://creativecommons.org/licenses/by/4.0/ thorny-headed worms body size Echinorhynchidae Echinorhynchus cinctulus microhabitat niche sex ratio spatial distribution article http://purl.org/eprint/type/JournalArticle http://purl.org/coar/resource_type/c_2df8fbb1 publishedVersion A1 2015 ftjyvaeskylaenun 2024-01-11T00:03:49Z Helminths often occupy defined niches in the gut of their definitive hosts. In the dioecious acanthocephalans, adult males and females usually have similar gut distributions, but sexual site segregation has been reported in at least some species. We studied the intestinal distribution of the acanthocephalan Echinorhynchus borealis von Linstow, 1901 (syn. of E. cinctulus Porta, 1905) in its definitive host, burbot (Lota lota Linnaeus). Over 80% of female worms were found in the pyloric caeca, whereas the majority of males were in the anterior two-thirds of the intestine. This difference was relatively consistent between individual fish hosts. Worms from different parts of the gut did not differ in length, so site segregation was not obviously related to worm growth or age. We found proportionally more males in the caeca when a larger fraction of the females were found there, suggesting mating opportunities influence gut distribution. However, this result relied on a single parasite infrapopulation and is thus tentative. We discuss how mating strategies and/or sexual differences in life history might explain why males and females occupy different parts of the burbot gut. peerReviewed Article in Journal/Newspaper Burbot Lota lota lota JYX - Jyväskylä University Digital Archive Folia Parasitologica 62 |
institution |
Open Polar |
collection |
JYX - Jyväskylä University Digital Archive |
op_collection_id |
ftjyvaeskylaenun |
language |
English |
topic |
thorny-headed worms body size Echinorhynchidae Echinorhynchus cinctulus microhabitat niche sex ratio spatial distribution |
spellingShingle |
thorny-headed worms body size Echinorhynchidae Echinorhynchus cinctulus microhabitat niche sex ratio spatial distribution Tuomainen, Arto Valtonen, Tellervo Benesh, Daniel Sexual segregation of Echinorhynchus borealis von Linstow, 1901 (Acanthocephala) in the gut of burbot (Lota lota Linnaeus) |
topic_facet |
thorny-headed worms body size Echinorhynchidae Echinorhynchus cinctulus microhabitat niche sex ratio spatial distribution |
description |
Helminths often occupy defined niches in the gut of their definitive hosts. In the dioecious acanthocephalans, adult males and females usually have similar gut distributions, but sexual site segregation has been reported in at least some species. We studied the intestinal distribution of the acanthocephalan Echinorhynchus borealis von Linstow, 1901 (syn. of E. cinctulus Porta, 1905) in its definitive host, burbot (Lota lota Linnaeus). Over 80% of female worms were found in the pyloric caeca, whereas the majority of males were in the anterior two-thirds of the intestine. This difference was relatively consistent between individual fish hosts. Worms from different parts of the gut did not differ in length, so site segregation was not obviously related to worm growth or age. We found proportionally more males in the caeca when a larger fraction of the females were found there, suggesting mating opportunities influence gut distribution. However, this result relied on a single parasite infrapopulation and is thus tentative. We discuss how mating strategies and/or sexual differences in life history might explain why males and females occupy different parts of the burbot gut. peerReviewed |
format |
Article in Journal/Newspaper |
author |
Tuomainen, Arto Valtonen, Tellervo Benesh, Daniel |
author_facet |
Tuomainen, Arto Valtonen, Tellervo Benesh, Daniel |
author_sort |
Tuomainen, Arto |
title |
Sexual segregation of Echinorhynchus borealis von Linstow, 1901 (Acanthocephala) in the gut of burbot (Lota lota Linnaeus) |
title_short |
Sexual segregation of Echinorhynchus borealis von Linstow, 1901 (Acanthocephala) in the gut of burbot (Lota lota Linnaeus) |
title_full |
Sexual segregation of Echinorhynchus borealis von Linstow, 1901 (Acanthocephala) in the gut of burbot (Lota lota Linnaeus) |
title_fullStr |
Sexual segregation of Echinorhynchus borealis von Linstow, 1901 (Acanthocephala) in the gut of burbot (Lota lota Linnaeus) |
title_full_unstemmed |
Sexual segregation of Echinorhynchus borealis von Linstow, 1901 (Acanthocephala) in the gut of burbot (Lota lota Linnaeus) |
title_sort |
sexual segregation of echinorhynchus borealis von linstow, 1901 (acanthocephala) in the gut of burbot (lota lota linnaeus) |
publisher |
Akademie Ved Ceske Republiky |
publishDate |
2015 |
url |
http://urn.fi/URN:NBN:fi:jyu-201511113632 |
genre |
Burbot Lota lota lota |
genre_facet |
Burbot Lota lota lota |
op_relation |
Folia Parasitologica 1803-6465 0 62 10.14411/fp.2015.061 Tuomainen, A., Valtonen, T., & Benesh, D. (2015). Sexual segregation of Echinorhynchus borealis von Linstow, 1901 (Acanthocephala) in the gut of burbot (Lota lota Linnaeus). Folia Parasitologica , 62 , Article 061. https://doi.org/10.14411/fp.2015.061 CONVID_25280938 TUTKAID_67714 URN:NBN:fi:jyu-201511113632 http://urn.fi/URN:NBN:fi:jyu-201511113632 |
op_rights |
© 2015 the Authors. Published by Akademie Ved Ceske Republiky. This is an Open Access article distributed under the terms of the Creative Commons Attribution License. openAccess http://creativecommons.org/licenses/by/4.0/ |
container_title |
Folia Parasitologica |
container_volume |
62 |
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1789964161661272064 |