Contamination, parasitism and condition of Anguilla anguilla in three Italian stocks
In conjunction with habitat loss and overfishing, pollution and parasitism are believed to be relevant causes of collapse of Anguilla, as these can affect eel swimming ability and the development of gonads and embryos. The present study investigated Persistent Organic Pollutant (POP) concentrations,...
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Online Access: | http://hdl.handle.net/11392/1721528 https://doi.org/10.1007/s10646-012-1006-0 |
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ftunivferrarair:oai:sfera.unife.it:11392/1721528 2024-09-09T19:00:34+00:00 Contamination, parasitism and condition of Anguilla anguilla in three Italian stocks S. Quadroni S. Galassi F. Capoccioni E. Ciccotti G. A. De Leo R. Bettinetti GRANDI, Gilberto S., Quadroni S., Galassi F., Capoccioni E., Ciccotti Grandi, Gilberto G. A., De Leo R., Bettinetti 2013 STAMPA http://hdl.handle.net/11392/1721528 https://doi.org/10.1007/s10646-012-1006-0 eng eng info:eu-repo/semantics/altIdentifier/wos/000312659600010 volume:22 issue:1 firstpage:94 lastpage:108 journal:ECOTOXICOLOGY http://hdl.handle.net/11392/1721528 doi:10.1007/s10646-012-1006-0 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84871608774 Anguilla anguilla POP bioaccumulation Parasitism Lipid content Gonad alteration Ecological and sanitary risk info:eu-repo/semantics/article 2013 ftunivferrarair https://doi.org/10.1007/s10646-012-1006-0 2024-06-19T13:34:53Z In conjunction with habitat loss and overfishing, pollution and parasitism are believed to be relevant causes of collapse of Anguilla, as these can affect eel swimming ability and the development of gonads and embryos. The present study investigated Persistent Organic Pollutant (POP) concentrations, infection levels of Anguillicoloides crassus, lipid content and gonad abnormalities in eels sampled in 2007–2008 in three Italian water bodies (Caprolace Lake, Lesina Lagoon and Tevere River) that vary in salinity, trophic condition, contamination level and fishing pressure. Our analysis revealed that low-to-moderate levels of contamination and parasitism were not associated with gonad abnormalities in Caprolace Lake and Lesina Lagoon. On the contrary, POP concentrations and abundances of swim bladder nematodes were remarkably high in eels from the heavily urbanized Tevere River and were associated with significant gonad and swim bladder alterations. Contamination and infestation levels were so high to potentially impair spawner successful migration and reproduction. POP concentrations in Tevere eels also exceeded levels considered safe for food consumption. Though marginally contaminated, eels from the oligotrophic Caprolace Lake were in critical health condition: their lipid reserve was so low as to be considered insufficient to sustain the energetic costs of the transoceanic migration. Lesina eel stock was the only one displaying relatively good quality but here spawner abundance is likely limited by overfishing. Our results suggest that multiple stressors may potentially affect eel reproductive success. More definitive studies are needed to assess whether health effects caused by these multiple stressors are additive, compensatory or synergistic. Article in Journal/Newspaper Anguilla anguilla Università degli Studi di Ferrara: CINECA IRIS Ecotoxicology 22 1 94 108 |
institution |
Open Polar |
collection |
Università degli Studi di Ferrara: CINECA IRIS |
op_collection_id |
ftunivferrarair |
language |
English |
topic |
Anguilla anguilla POP bioaccumulation Parasitism Lipid content Gonad alteration Ecological and sanitary risk |
spellingShingle |
Anguilla anguilla POP bioaccumulation Parasitism Lipid content Gonad alteration Ecological and sanitary risk S. Quadroni S. Galassi F. Capoccioni E. Ciccotti G. A. De Leo R. Bettinetti GRANDI, Gilberto Contamination, parasitism and condition of Anguilla anguilla in three Italian stocks |
topic_facet |
Anguilla anguilla POP bioaccumulation Parasitism Lipid content Gonad alteration Ecological and sanitary risk |
description |
In conjunction with habitat loss and overfishing, pollution and parasitism are believed to be relevant causes of collapse of Anguilla, as these can affect eel swimming ability and the development of gonads and embryos. The present study investigated Persistent Organic Pollutant (POP) concentrations, infection levels of Anguillicoloides crassus, lipid content and gonad abnormalities in eels sampled in 2007–2008 in three Italian water bodies (Caprolace Lake, Lesina Lagoon and Tevere River) that vary in salinity, trophic condition, contamination level and fishing pressure. Our analysis revealed that low-to-moderate levels of contamination and parasitism were not associated with gonad abnormalities in Caprolace Lake and Lesina Lagoon. On the contrary, POP concentrations and abundances of swim bladder nematodes were remarkably high in eels from the heavily urbanized Tevere River and were associated with significant gonad and swim bladder alterations. Contamination and infestation levels were so high to potentially impair spawner successful migration and reproduction. POP concentrations in Tevere eels also exceeded levels considered safe for food consumption. Though marginally contaminated, eels from the oligotrophic Caprolace Lake were in critical health condition: their lipid reserve was so low as to be considered insufficient to sustain the energetic costs of the transoceanic migration. Lesina eel stock was the only one displaying relatively good quality but here spawner abundance is likely limited by overfishing. Our results suggest that multiple stressors may potentially affect eel reproductive success. More definitive studies are needed to assess whether health effects caused by these multiple stressors are additive, compensatory or synergistic. |
author2 |
S., Quadroni S., Galassi F., Capoccioni E., Ciccotti Grandi, Gilberto G. A., De Leo R., Bettinetti |
format |
Article in Journal/Newspaper |
author |
S. Quadroni S. Galassi F. Capoccioni E. Ciccotti G. A. De Leo R. Bettinetti GRANDI, Gilberto |
author_facet |
S. Quadroni S. Galassi F. Capoccioni E. Ciccotti G. A. De Leo R. Bettinetti GRANDI, Gilberto |
author_sort |
S. Quadroni |
title |
Contamination, parasitism and condition of Anguilla anguilla in three Italian stocks |
title_short |
Contamination, parasitism and condition of Anguilla anguilla in three Italian stocks |
title_full |
Contamination, parasitism and condition of Anguilla anguilla in three Italian stocks |
title_fullStr |
Contamination, parasitism and condition of Anguilla anguilla in three Italian stocks |
title_full_unstemmed |
Contamination, parasitism and condition of Anguilla anguilla in three Italian stocks |
title_sort |
contamination, parasitism and condition of anguilla anguilla in three italian stocks |
publishDate |
2013 |
url |
http://hdl.handle.net/11392/1721528 https://doi.org/10.1007/s10646-012-1006-0 |
genre |
Anguilla anguilla |
genre_facet |
Anguilla anguilla |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/000312659600010 volume:22 issue:1 firstpage:94 lastpage:108 journal:ECOTOXICOLOGY http://hdl.handle.net/11392/1721528 doi:10.1007/s10646-012-1006-0 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84871608774 |
op_doi |
https://doi.org/10.1007/s10646-012-1006-0 |
container_title |
Ecotoxicology |
container_volume |
22 |
container_issue |
1 |
container_start_page |
94 |
op_container_end_page |
108 |
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1809940466649530368 |