Infection levels of plerocercoids of the tapeworm Triaenophorus crassusand feeding strategy in two fish species from the ultra-oligotrophic Lake Achensee, Austria
Abstract Thus far, high burdens of Triaenophorus crassus plerocercoids have been reported only in old age groups of coregonid and salmonid fishes. Here we show heavy infection with T. crassus in young whitefish Coregonus lavaretus in the ultra-oligotrophic and regulated Achensee in Tyrol, Austria. P...
Published in: | Journal of Helminthology |
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Online Access: | http://dx.doi.org/10.1017/s0022149x14000777 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022149X14000777 |
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crcambridgeupr:10.1017/s0022149x14000777 2024-06-23T07:48:55+00:00 Infection levels of plerocercoids of the tapeworm Triaenophorus crassusand feeding strategy in two fish species from the ultra-oligotrophic Lake Achensee, Austria Schähle, Z. Medgyesy, N. Psenner, R. 2014 http://dx.doi.org/10.1017/s0022149x14000777 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022149X14000777 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Journal of Helminthology volume 90, issue 1, page 54-61 ISSN 0022-149X 1475-2697 journal-article 2014 crcambridgeupr https://doi.org/10.1017/s0022149x14000777 2024-06-05T04:04:07Z Abstract Thus far, high burdens of Triaenophorus crassus plerocercoids have been reported only in old age groups of coregonid and salmonid fishes. Here we show heavy infection with T. crassus in young whitefish Coregonus lavaretus in the ultra-oligotrophic and regulated Achensee in Tyrol, Austria. Prevalence of T. crassus on C. lavaretus was 100% in all age groups and abundance significantly increased with fish age. The mean annual accumulation of T. crassus was 5.2 parasites in 0- to 7-year-old C. lavaretus , and 2-year-old specimens already harboured a mean of 19.4 plerocercoids. In Arctic charr Salvelinus umbla , however, the prevalence of T. crassus was less than 16% and the majority of infected fish contained only one or two plerocercoids. Triaenophorus nodulosus was present neither in C. lavaretus nor in S. umbla . We assume that the heavy T. crassus infection in C. lavaretus is largely related to their zooplankton-dominated diet and to the characteristics of Achensee, while habitat choice and feeding strategy of the S. umbla population are seen to be the main reasons for their low burdens of T. crassus . Article in Journal/Newspaper Arctic charr Arctic Zooplankton Cambridge University Press Arctic Journal of Helminthology 90 1 54 61 |
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Open Polar |
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Cambridge University Press |
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crcambridgeupr |
language |
English |
description |
Abstract Thus far, high burdens of Triaenophorus crassus plerocercoids have been reported only in old age groups of coregonid and salmonid fishes. Here we show heavy infection with T. crassus in young whitefish Coregonus lavaretus in the ultra-oligotrophic and regulated Achensee in Tyrol, Austria. Prevalence of T. crassus on C. lavaretus was 100% in all age groups and abundance significantly increased with fish age. The mean annual accumulation of T. crassus was 5.2 parasites in 0- to 7-year-old C. lavaretus , and 2-year-old specimens already harboured a mean of 19.4 plerocercoids. In Arctic charr Salvelinus umbla , however, the prevalence of T. crassus was less than 16% and the majority of infected fish contained only one or two plerocercoids. Triaenophorus nodulosus was present neither in C. lavaretus nor in S. umbla . We assume that the heavy T. crassus infection in C. lavaretus is largely related to their zooplankton-dominated diet and to the characteristics of Achensee, while habitat choice and feeding strategy of the S. umbla population are seen to be the main reasons for their low burdens of T. crassus . |
format |
Article in Journal/Newspaper |
author |
Schähle, Z. Medgyesy, N. Psenner, R. |
spellingShingle |
Schähle, Z. Medgyesy, N. Psenner, R. Infection levels of plerocercoids of the tapeworm Triaenophorus crassusand feeding strategy in two fish species from the ultra-oligotrophic Lake Achensee, Austria |
author_facet |
Schähle, Z. Medgyesy, N. Psenner, R. |
author_sort |
Schähle, Z. |
title |
Infection levels of plerocercoids of the tapeworm Triaenophorus crassusand feeding strategy in two fish species from the ultra-oligotrophic Lake Achensee, Austria |
title_short |
Infection levels of plerocercoids of the tapeworm Triaenophorus crassusand feeding strategy in two fish species from the ultra-oligotrophic Lake Achensee, Austria |
title_full |
Infection levels of plerocercoids of the tapeworm Triaenophorus crassusand feeding strategy in two fish species from the ultra-oligotrophic Lake Achensee, Austria |
title_fullStr |
Infection levels of plerocercoids of the tapeworm Triaenophorus crassusand feeding strategy in two fish species from the ultra-oligotrophic Lake Achensee, Austria |
title_full_unstemmed |
Infection levels of plerocercoids of the tapeworm Triaenophorus crassusand feeding strategy in two fish species from the ultra-oligotrophic Lake Achensee, Austria |
title_sort |
infection levels of plerocercoids of the tapeworm triaenophorus crassusand feeding strategy in two fish species from the ultra-oligotrophic lake achensee, austria |
publisher |
Cambridge University Press (CUP) |
publishDate |
2014 |
url |
http://dx.doi.org/10.1017/s0022149x14000777 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022149X14000777 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic charr Arctic Zooplankton |
genre_facet |
Arctic charr Arctic Zooplankton |
op_source |
Journal of Helminthology volume 90, issue 1, page 54-61 ISSN 0022-149X 1475-2697 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s0022149x14000777 |
container_title |
Journal of Helminthology |
container_volume |
90 |
container_issue |
1 |
container_start_page |
54 |
op_container_end_page |
61 |
_version_ |
1802639233213530112 |