Baltic cod endohelminths reflect recent ecological changes
Abstract We suggest helminthological investigations of cod as a supplement to traditional biological and hydrographical methods for elucidation of ecological changes in the Baltic Sea. It is under discussion if oxygen deficit or seal abundance should explain the present critical situation of Baltic...
Published in: | Journal of Helminthology |
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Language: | English |
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Cambridge University Press (CUP)
2020
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Online Access: | http://dx.doi.org/10.1017/s0022149x20000176 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022149X20000176 |
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crcambridgeupr:10.1017/s0022149x20000176 2024-05-19T07:40:35+00:00 Baltic cod endohelminths reflect recent ecological changes Setyawan, A.C. Jensen, H.M. Kania, P.W. Buchmann, K. 2020 http://dx.doi.org/10.1017/s0022149x20000176 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022149X20000176 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Journal of Helminthology volume 94 ISSN 0022-149X 1475-2697 journal-article 2020 crcambridgeupr https://doi.org/10.1017/s0022149x20000176 2024-05-02T06:50:49Z Abstract We suggest helminthological investigations of cod as a supplement to traditional biological and hydrographical methods for elucidation of ecological changes in the Baltic Sea. It is under discussion if oxygen deficit or seal abundance should explain the present critical situation of Baltic cod. A comparative investigation of endoparasitic helminths in Baltic cod ( Gadus morhua ), captured in the same marine habitat with an interval of 35 years (1983/2018) recorded 11 species of helminths comprising trematodes ( Hemiurus luehei , Podocotyle atomon , Lepidapedon elongatum ), nematodes ( Contracaecum osculatum , Hysterothylacium aduncum , Capillaria gracilis , Cucullanus cirratus ), cestodes ( Bothriocephalus sp.) and acanthocephalans ( Echinorhynchus gadi , Pomphorhynchus laevis , Corynosoma semerme ). Significant prevalence and intensity increases were recorded for third-stage larvae of the nematode C. osculatum (liver location) and larvae of C. semerme (encapsulated in viscera). Both parasite species use grey seal as their final host, indicating the recent expansion of the Baltic seal population. A lower E. gadi intensity and an increased prevalence of L. elongatum of small cod (31–40 cm body length) suggest a lowered intake of amphipods (intermediate host) and elevated ingestion of polychaetes, respectively, but no significant changes were seen for other helminths. Article in Journal/Newspaper Gadus morhua Cambridge University Press Journal of Helminthology 94 |
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Open Polar |
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Cambridge University Press |
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crcambridgeupr |
language |
English |
description |
Abstract We suggest helminthological investigations of cod as a supplement to traditional biological and hydrographical methods for elucidation of ecological changes in the Baltic Sea. It is under discussion if oxygen deficit or seal abundance should explain the present critical situation of Baltic cod. A comparative investigation of endoparasitic helminths in Baltic cod ( Gadus morhua ), captured in the same marine habitat with an interval of 35 years (1983/2018) recorded 11 species of helminths comprising trematodes ( Hemiurus luehei , Podocotyle atomon , Lepidapedon elongatum ), nematodes ( Contracaecum osculatum , Hysterothylacium aduncum , Capillaria gracilis , Cucullanus cirratus ), cestodes ( Bothriocephalus sp.) and acanthocephalans ( Echinorhynchus gadi , Pomphorhynchus laevis , Corynosoma semerme ). Significant prevalence and intensity increases were recorded for third-stage larvae of the nematode C. osculatum (liver location) and larvae of C. semerme (encapsulated in viscera). Both parasite species use grey seal as their final host, indicating the recent expansion of the Baltic seal population. A lower E. gadi intensity and an increased prevalence of L. elongatum of small cod (31–40 cm body length) suggest a lowered intake of amphipods (intermediate host) and elevated ingestion of polychaetes, respectively, but no significant changes were seen for other helminths. |
format |
Article in Journal/Newspaper |
author |
Setyawan, A.C. Jensen, H.M. Kania, P.W. Buchmann, K. |
spellingShingle |
Setyawan, A.C. Jensen, H.M. Kania, P.W. Buchmann, K. Baltic cod endohelminths reflect recent ecological changes |
author_facet |
Setyawan, A.C. Jensen, H.M. Kania, P.W. Buchmann, K. |
author_sort |
Setyawan, A.C. |
title |
Baltic cod endohelminths reflect recent ecological changes |
title_short |
Baltic cod endohelminths reflect recent ecological changes |
title_full |
Baltic cod endohelminths reflect recent ecological changes |
title_fullStr |
Baltic cod endohelminths reflect recent ecological changes |
title_full_unstemmed |
Baltic cod endohelminths reflect recent ecological changes |
title_sort |
baltic cod endohelminths reflect recent ecological changes |
publisher |
Cambridge University Press (CUP) |
publishDate |
2020 |
url |
http://dx.doi.org/10.1017/s0022149x20000176 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022149X20000176 |
genre |
Gadus morhua |
genre_facet |
Gadus morhua |
op_source |
Journal of Helminthology volume 94 ISSN 0022-149X 1475-2697 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s0022149x20000176 |
container_title |
Journal of Helminthology |
container_volume |
94 |
_version_ |
1799480174728708096 |