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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ftczechacademysc:oai:kramerius.lib.cas.cz:uuid:b3d428ce-939d-4f62-b2ed-a6043bfee2bf 2024-03-17T08:57:14+00:00 Sexual segregation of Echinorhynchus borealis von Linstow, 1901 (Acanthocephala) in the gut of burbot (Lota lota Linnaeus) Tuomainen, Arto Valtonen, E. Tellervo Benesh, Daniel P 1-5 electronic počítač zdroj https://kramerius.lib.cas.cz/view/uuid:b3d428ce-939d-4f62-b2ed-a6043bfee2bf https://doi.org/10.14411/fp.2015.061 unknown https://kramerius.lib.cas.cz/view/uuid:b3d428ce-939d-4f62-b2ed-a6043bfee2bf issn:1803-6465 doi:10.14411/fp.2015.061 policy:public poměr pohlaví sex ratio thorny-headed worms body size Echinorhynchidae Echinorhynchus cinctulus microhabitat niche spatial distribution 2 59 model:article ftczechacademysc https://doi.org/10.14411/fp.2015.061 2024-02-19T22:58:13Z 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. Arto Tuomainen, E. Tellervo Valtonen, Daniel P. Benesh. Obsahuje bibliografii Article in Journal/Newspaper Burbot Lota lota lota Czech Academy of Sciences: dKNAV Folia Parasitologica 62 |
institution |
Open Polar |
collection |
Czech Academy of Sciences: dKNAV |
op_collection_id |
ftczechacademysc |
language |
unknown |
topic |
poměr pohlaví sex ratio thorny-headed worms body size Echinorhynchidae Echinorhynchus cinctulus microhabitat niche spatial distribution 2 59 |
spellingShingle |
poměr pohlaví sex ratio thorny-headed worms body size Echinorhynchidae Echinorhynchus cinctulus microhabitat niche spatial distribution 2 59 Tuomainen, Arto Valtonen, E. Tellervo Benesh, Daniel P Sexual segregation of Echinorhynchus borealis von Linstow, 1901 (Acanthocephala) in the gut of burbot (Lota lota Linnaeus) |
topic_facet |
poměr pohlaví sex ratio thorny-headed worms body size Echinorhynchidae Echinorhynchus cinctulus microhabitat niche spatial distribution 2 59 |
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. Arto Tuomainen, E. Tellervo Valtonen, Daniel P. Benesh. Obsahuje bibliografii |
format |
Article in Journal/Newspaper |
author |
Tuomainen, Arto Valtonen, E. Tellervo Benesh, Daniel P |
author_facet |
Tuomainen, Arto Valtonen, E. Tellervo Benesh, Daniel P |
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) |
url |
https://kramerius.lib.cas.cz/view/uuid:b3d428ce-939d-4f62-b2ed-a6043bfee2bf https://doi.org/10.14411/fp.2015.061 |
op_coverage |
1-5 |
genre |
Burbot Lota lota lota |
genre_facet |
Burbot Lota lota lota |
op_relation |
https://kramerius.lib.cas.cz/view/uuid:b3d428ce-939d-4f62-b2ed-a6043bfee2bf issn:1803-6465 doi:10.14411/fp.2015.061 |
op_rights |
policy:public |
op_doi |
https://doi.org/10.14411/fp.2015.061 |
container_title |
Folia Parasitologica |
container_volume |
62 |
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1793766316302139392 |