Regulation of infrapopulations of Cryptocotyle lingua on cod
To study the infection dynamics of metacercariae of the digenean Cryptocotyle lingua , wild living Atlantic cod, Gadus morhua , were caged for 18 months close to the shore. Here they were exposed to naturally occurring transmission stages of the parasite. First, both the abundance and the variance t...
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Language: | English |
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Cambridge University Press (CUP)
1997
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Online Access: | http://dx.doi.org/10.1017/s0031182096008335 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0031182096008335 |
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crcambridgeupr:10.1017/s0031182096008335 2024-05-12T08:00:56+00:00 Regulation of infrapopulations of Cryptocotyle lingua on cod LYSNE, D. A. HEMMINGSEN, W. SKORPING, A. 1997 http://dx.doi.org/10.1017/s0031182096008335 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0031182096008335 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Parasitology volume 114, issue 2, page 145-150 ISSN 0031-1820 1469-8161 Infectious Diseases Animal Science and Zoology Parasitology journal-article 1997 crcambridgeupr https://doi.org/10.1017/s0031182096008335 2024-04-18T06:54:37Z To study the infection dynamics of metacercariae of the digenean Cryptocotyle lingua , wild living Atlantic cod, Gadus morhua , were caged for 18 months close to the shore. Here they were exposed to naturally occurring transmission stages of the parasite. First, both the abundance and the variance to mean ratio of metacercariae increased, but during the second half of the study the abundance levelled out, and the variance to mean ratio showed a significant decrease. Host mortality was negligible throughout the study. Based on the relationship between pigment spots and metacercariae observed by skin digestion, there was no indication of density-dependent parasite mortality. We conclude that the infrapopulations of metacercariae on the caged cod probably were regulated by density-dependent host responses acting against the cercariae. Article in Journal/Newspaper atlantic cod Gadus morhua Cambridge University Press Parasitology 114 2 145 150 |
institution |
Open Polar |
collection |
Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
topic |
Infectious Diseases Animal Science and Zoology Parasitology |
spellingShingle |
Infectious Diseases Animal Science and Zoology Parasitology LYSNE, D. A. HEMMINGSEN, W. SKORPING, A. Regulation of infrapopulations of Cryptocotyle lingua on cod |
topic_facet |
Infectious Diseases Animal Science and Zoology Parasitology |
description |
To study the infection dynamics of metacercariae of the digenean Cryptocotyle lingua , wild living Atlantic cod, Gadus morhua , were caged for 18 months close to the shore. Here they were exposed to naturally occurring transmission stages of the parasite. First, both the abundance and the variance to mean ratio of metacercariae increased, but during the second half of the study the abundance levelled out, and the variance to mean ratio showed a significant decrease. Host mortality was negligible throughout the study. Based on the relationship between pigment spots and metacercariae observed by skin digestion, there was no indication of density-dependent parasite mortality. We conclude that the infrapopulations of metacercariae on the caged cod probably were regulated by density-dependent host responses acting against the cercariae. |
format |
Article in Journal/Newspaper |
author |
LYSNE, D. A. HEMMINGSEN, W. SKORPING, A. |
author_facet |
LYSNE, D. A. HEMMINGSEN, W. SKORPING, A. |
author_sort |
LYSNE, D. A. |
title |
Regulation of infrapopulations of Cryptocotyle lingua on cod |
title_short |
Regulation of infrapopulations of Cryptocotyle lingua on cod |
title_full |
Regulation of infrapopulations of Cryptocotyle lingua on cod |
title_fullStr |
Regulation of infrapopulations of Cryptocotyle lingua on cod |
title_full_unstemmed |
Regulation of infrapopulations of Cryptocotyle lingua on cod |
title_sort |
regulation of infrapopulations of cryptocotyle lingua on cod |
publisher |
Cambridge University Press (CUP) |
publishDate |
1997 |
url |
http://dx.doi.org/10.1017/s0031182096008335 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0031182096008335 |
genre |
atlantic cod Gadus morhua |
genre_facet |
atlantic cod Gadus morhua |
op_source |
Parasitology volume 114, issue 2, page 145-150 ISSN 0031-1820 1469-8161 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s0031182096008335 |
container_title |
Parasitology |
container_volume |
114 |
container_issue |
2 |
container_start_page |
145 |
op_container_end_page |
150 |
_version_ |
1798842997442347008 |