Morphological observations on three baltic species of Corynosoma lühe, 1905 (acanthocephala, polymorphidae)
<jats:p>Necropsies of Baltic grey (Halichoerus grypus) and ringed seals (Pusa hispida) presented a rare opportunity to study their acanthocephalan fauna. Both species hosted adults of three species of the genus Corynosoma Lühe, 1904, namely C. magdaleni Montreuil, 1958, C. semerme (Forsell, 19...
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ftunivcam:oai:www.repository.cam.ac.uk:1810/292357 2024-01-14T10:10:08+01:00 Morphological observations on three baltic species of Corynosoma lühe, 1905 (acanthocephala, polymorphidae) Leidenberger, S Boström, S Wayland, MT 2019 application/pdf https://www.repository.cam.ac.uk/handle/1810/292357 https://doi.org/10.17863/CAM.39507 eng eng Museum National D'Histoire Naturelle http://dx.doi.org/10.5852/ejt.2019.514 European Journal of Taxonomy https://www.repository.cam.ac.uk/handle/1810/292357 doi:10.17863/CAM.39507 Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ Baltic Sea grey seals ringed seals SEM thorny-headed worms Article 2019 ftunivcam https://doi.org/10.17863/CAM.39507 2023-12-21T23:29:50Z <jats:p>Necropsies of Baltic grey (Halichoerus grypus) and ringed seals (Pusa hispida) presented a rare opportunity to study their acanthocephalan fauna. Both species hosted adults of three species of the genus Corynosoma Lühe, 1904, namely C. magdaleni Montreuil, 1958, C. semerme (Forsell, 1904) Lühe 1911 and C. strumosum (Rudolphi, 1802) Lühe 1904. A comparative morphological analysis of these three species of Corynosoma, combining both light and scanning electron microscopy, was performed for the first time. Sexual dimorphism in the size and shape of the trunk was observed in both C. magdaleni and C. semerme, but there was insufficient material to investigate this phenomenon in C. strumosum. Genital spines were not observed in any of the female acanthocephalans. Three possible explanations for the presence of genital spines in some females, but not others are (i) cryptic speciation, (ii) phenotypic variation and (iii) loss by extraction or shearing when the copulatory cap is released. Copulatory caps were observed on female C. semerme. The size and morphology showed considerable variability and all caps were strongly autofluoresecent.</jats:p> Article in Journal/Newspaper Pusa hispida Apollo - University of Cambridge Repository Montreuil ENVELOPE(166.183,166.183,-73.067,-73.067) |
institution |
Open Polar |
collection |
Apollo - University of Cambridge Repository |
op_collection_id |
ftunivcam |
language |
English |
topic |
Baltic Sea grey seals ringed seals SEM thorny-headed worms |
spellingShingle |
Baltic Sea grey seals ringed seals SEM thorny-headed worms Leidenberger, S Boström, S Wayland, MT Morphological observations on three baltic species of Corynosoma lühe, 1905 (acanthocephala, polymorphidae) |
topic_facet |
Baltic Sea grey seals ringed seals SEM thorny-headed worms |
description |
<jats:p>Necropsies of Baltic grey (Halichoerus grypus) and ringed seals (Pusa hispida) presented a rare opportunity to study their acanthocephalan fauna. Both species hosted adults of three species of the genus Corynosoma Lühe, 1904, namely C. magdaleni Montreuil, 1958, C. semerme (Forsell, 1904) Lühe 1911 and C. strumosum (Rudolphi, 1802) Lühe 1904. A comparative morphological analysis of these three species of Corynosoma, combining both light and scanning electron microscopy, was performed for the first time. Sexual dimorphism in the size and shape of the trunk was observed in both C. magdaleni and C. semerme, but there was insufficient material to investigate this phenomenon in C. strumosum. Genital spines were not observed in any of the female acanthocephalans. Three possible explanations for the presence of genital spines in some females, but not others are (i) cryptic speciation, (ii) phenotypic variation and (iii) loss by extraction or shearing when the copulatory cap is released. Copulatory caps were observed on female C. semerme. The size and morphology showed considerable variability and all caps were strongly autofluoresecent.</jats:p> |
format |
Article in Journal/Newspaper |
author |
Leidenberger, S Boström, S Wayland, MT |
author_facet |
Leidenberger, S Boström, S Wayland, MT |
author_sort |
Leidenberger, S |
title |
Morphological observations on three baltic species of Corynosoma lühe, 1905 (acanthocephala, polymorphidae) |
title_short |
Morphological observations on three baltic species of Corynosoma lühe, 1905 (acanthocephala, polymorphidae) |
title_full |
Morphological observations on three baltic species of Corynosoma lühe, 1905 (acanthocephala, polymorphidae) |
title_fullStr |
Morphological observations on three baltic species of Corynosoma lühe, 1905 (acanthocephala, polymorphidae) |
title_full_unstemmed |
Morphological observations on three baltic species of Corynosoma lühe, 1905 (acanthocephala, polymorphidae) |
title_sort |
morphological observations on three baltic species of corynosoma lühe, 1905 (acanthocephala, polymorphidae) |
publisher |
Museum National D'Histoire Naturelle |
publishDate |
2019 |
url |
https://www.repository.cam.ac.uk/handle/1810/292357 https://doi.org/10.17863/CAM.39507 |
long_lat |
ENVELOPE(166.183,166.183,-73.067,-73.067) |
geographic |
Montreuil |
geographic_facet |
Montreuil |
genre |
Pusa hispida |
genre_facet |
Pusa hispida |
op_relation |
https://www.repository.cam.ac.uk/handle/1810/292357 doi:10.17863/CAM.39507 |
op_rights |
Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.17863/CAM.39507 |
_version_ |
1788064756340359168 |