Ultrastructure of the mature spermatozoon of Eubothrium rugosum (Batsch, 1786) with a re-assessment of the spermatozoon ultrastructure of Eubothrium crassum (Bloch, 1779) (Cestoda: Bothriocephalidea)
Abstract The ultrastructure of the mature spermatozoon of the bothriocephalidean tapeworm Eubothrium rugosum, a parasite of the burbot, Lota lota (L.), was studied by transmission electron microscopy for the first time. In addition, spermatozoon ultrastructure of Eubothrium crassum has been re-asses...
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Walter de Gruyter GmbH
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crdegruyter:10.2478/s11687-010-0040-9 2023-05-15T15:47:18+02:00 Ultrastructure of the mature spermatozoon of Eubothrium rugosum (Batsch, 1786) with a re-assessment of the spermatozoon ultrastructure of Eubothrium crassum (Bloch, 1779) (Cestoda: Bothriocephalidea) Bruňanská, M. Fagerholm, H.-P. Nebesářová, J. Kostič, B. 2010 http://dx.doi.org/10.2478/s11687-010-0040-9 https://content.sciendo.com/view/journals/helm/47/4/article-p257.xml http://link.springer.com/content/pdf/10.2478/s11687-010-0040-9.pdf https://www.sciendo.com/pdf/10.2478/s11687-010-0040-9 en eng Walter de Gruyter GmbH http://creativecommons.org/licenses/by-nc-nd/3.0/ CC-BY-NC-ND Helminthologia volume 47, issue 4, page 257-263 ISSN 1336-9083 0440-6605 Animal Science and Zoology Parasitology journal-article 2010 crdegruyter https://doi.org/10.2478/s11687-010-0040-9 2022-07-08T14:12:01Z Abstract The ultrastructure of the mature spermatozoon of the bothriocephalidean tapeworm Eubothrium rugosum, a parasite of the burbot, Lota lota (L.), was studied by transmission electron microscopy for the first time. In addition, spermatozoon ultrastructure of Eubothrium crassum has been re-assessed. New is the finding, that the mature spermatozoa of both species of the genus Eubothrium exhibit essentially the same general morphology. They are filiform cells tapering at both extremities, and they possess the two axonemes with 9+“1” pattern of Trepaxonemata, attachment zones, a nucleus, cortical microtubules (CMs), electron-dense granules, and a single crested body. Structural polymorphism of the CBs has been found within the two Eubothrium species for the first time. The anterior ring of electron-dense tubular structures surrounding a single axoneme marks the border between the two defined regions, region I and region II of the spermatozoon. This unique feature has only been observed in the Bothriocephalidea. The anuclear axoneme region II of Eubothrium spermatozoa fluently verges into a nuclear region III. The posterior part of the spermatozoon contains one-axoneme, few CMs and a posterior extremity of the nucleus that subsequently disappears. The posterior extremity of the male gametes of the genus Eubothrium exhibits elements of a disorganized axoneme which characterize also spermatozoa of the family Triaenophoridae. Discussed are interspecific similarities and differences between the spermatozoa of the two Eubothrium species as well as between these and other Eucestoda. Article in Journal/Newspaper Burbot Lota lota lota De Gruyter (via Crossref) Helminthologia 47 4 257 263 |
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English |
topic |
Animal Science and Zoology Parasitology |
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Animal Science and Zoology Parasitology Bruňanská, M. Fagerholm, H.-P. Nebesářová, J. Kostič, B. Ultrastructure of the mature spermatozoon of Eubothrium rugosum (Batsch, 1786) with a re-assessment of the spermatozoon ultrastructure of Eubothrium crassum (Bloch, 1779) (Cestoda: Bothriocephalidea) |
topic_facet |
Animal Science and Zoology Parasitology |
description |
Abstract The ultrastructure of the mature spermatozoon of the bothriocephalidean tapeworm Eubothrium rugosum, a parasite of the burbot, Lota lota (L.), was studied by transmission electron microscopy for the first time. In addition, spermatozoon ultrastructure of Eubothrium crassum has been re-assessed. New is the finding, that the mature spermatozoa of both species of the genus Eubothrium exhibit essentially the same general morphology. They are filiform cells tapering at both extremities, and they possess the two axonemes with 9+“1” pattern of Trepaxonemata, attachment zones, a nucleus, cortical microtubules (CMs), electron-dense granules, and a single crested body. Structural polymorphism of the CBs has been found within the two Eubothrium species for the first time. The anterior ring of electron-dense tubular structures surrounding a single axoneme marks the border between the two defined regions, region I and region II of the spermatozoon. This unique feature has only been observed in the Bothriocephalidea. The anuclear axoneme region II of Eubothrium spermatozoa fluently verges into a nuclear region III. The posterior part of the spermatozoon contains one-axoneme, few CMs and a posterior extremity of the nucleus that subsequently disappears. The posterior extremity of the male gametes of the genus Eubothrium exhibits elements of a disorganized axoneme which characterize also spermatozoa of the family Triaenophoridae. Discussed are interspecific similarities and differences between the spermatozoa of the two Eubothrium species as well as between these and other Eucestoda. |
format |
Article in Journal/Newspaper |
author |
Bruňanská, M. Fagerholm, H.-P. Nebesářová, J. Kostič, B. |
author_facet |
Bruňanská, M. Fagerholm, H.-P. Nebesářová, J. Kostič, B. |
author_sort |
Bruňanská, M. |
title |
Ultrastructure of the mature spermatozoon of Eubothrium rugosum (Batsch, 1786) with a re-assessment of the spermatozoon ultrastructure of Eubothrium crassum (Bloch, 1779) (Cestoda: Bothriocephalidea) |
title_short |
Ultrastructure of the mature spermatozoon of Eubothrium rugosum (Batsch, 1786) with a re-assessment of the spermatozoon ultrastructure of Eubothrium crassum (Bloch, 1779) (Cestoda: Bothriocephalidea) |
title_full |
Ultrastructure of the mature spermatozoon of Eubothrium rugosum (Batsch, 1786) with a re-assessment of the spermatozoon ultrastructure of Eubothrium crassum (Bloch, 1779) (Cestoda: Bothriocephalidea) |
title_fullStr |
Ultrastructure of the mature spermatozoon of Eubothrium rugosum (Batsch, 1786) with a re-assessment of the spermatozoon ultrastructure of Eubothrium crassum (Bloch, 1779) (Cestoda: Bothriocephalidea) |
title_full_unstemmed |
Ultrastructure of the mature spermatozoon of Eubothrium rugosum (Batsch, 1786) with a re-assessment of the spermatozoon ultrastructure of Eubothrium crassum (Bloch, 1779) (Cestoda: Bothriocephalidea) |
title_sort |
ultrastructure of the mature spermatozoon of eubothrium rugosum (batsch, 1786) with a re-assessment of the spermatozoon ultrastructure of eubothrium crassum (bloch, 1779) (cestoda: bothriocephalidea) |
publisher |
Walter de Gruyter GmbH |
publishDate |
2010 |
url |
http://dx.doi.org/10.2478/s11687-010-0040-9 https://content.sciendo.com/view/journals/helm/47/4/article-p257.xml http://link.springer.com/content/pdf/10.2478/s11687-010-0040-9.pdf https://www.sciendo.com/pdf/10.2478/s11687-010-0040-9 |
genre |
Burbot Lota lota lota |
genre_facet |
Burbot Lota lota lota |
op_source |
Helminthologia volume 47, issue 4, page 257-263 ISSN 1336-9083 0440-6605 |
op_rights |
http://creativecommons.org/licenses/by-nc-nd/3.0/ |
op_rightsnorm |
CC-BY-NC-ND |
op_doi |
https://doi.org/10.2478/s11687-010-0040-9 |
container_title |
Helminthologia |
container_volume |
47 |
container_issue |
4 |
container_start_page |
257 |
op_container_end_page |
263 |
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1766382083089891328 |