Estimation of production and long‐term changes in the population of European eel Anguilla anguilla (L.) in an Irish lake
Abstract Monitoring of yellow‐phase and silver‐phase Anguilla anguilla during their continental life history is necessary for evaluation of stock recovery measures. Eel population data for an Irish lake (Lough Sheelin) were compiled for the period 1993–2014. Catch data from 2009 to 2014 provided min...
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crwiley:10.1111/eff.12304 2024-06-23T07:45:31+00:00 Estimation of production and long‐term changes in the population of European eel Anguilla anguilla (L.) in an Irish lake MacNamara, Ruairí McCarthy, T. Kieran Barry, James National University of Ireland, Galway 2016 http://dx.doi.org/10.1111/eff.12304 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Feff.12304 https://onlinelibrary.wiley.com/doi/pdf/10.1111/eff.12304 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Ecology of Freshwater Fish volume 26, issue 4, page 602-608 ISSN 0906-6691 1600-0633 journal-article 2016 crwiley https://doi.org/10.1111/eff.12304 2024-06-04T06:45:42Z Abstract Monitoring of yellow‐phase and silver‐phase Anguilla anguilla during their continental life history is necessary for evaluation of stock recovery measures. Eel population data for an Irish lake (Lough Sheelin) were compiled for the period 1993–2014. Catch data from 2009 to 2014 provided minimum estimates of recent silver eel production ranging annually from 0.79 to 1.84 kg/ha. Long‐term changes in yellow eel abundance and silver eel size structure were assessed as part of a fishery monitoring programme. Yellow eel catch per unit effort ( CPUE ) in the lake (from longline surveys) was considerably higher in the 1990s (52.2–62.1 eels/100 hooks) than 2002–2008 (1.9–15.8 eels/100 hooks). Conversely, during 1993–2014, the mean size of silver eels migrating from the lake increased significantly ( p < .001), from 659 mm to 838 mm. The results suggest that in the absence of direct yellow eel abundance data, interannual variation in silver eel size structure may be a useful monitoring tool for local eel stocks as part of Eel Management Plans ( EMP 's). Article in Journal/Newspaper Anguilla anguilla Wiley Online Library Ecology of Freshwater Fish 26 4 602 608 |
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Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract Monitoring of yellow‐phase and silver‐phase Anguilla anguilla during their continental life history is necessary for evaluation of stock recovery measures. Eel population data for an Irish lake (Lough Sheelin) were compiled for the period 1993–2014. Catch data from 2009 to 2014 provided minimum estimates of recent silver eel production ranging annually from 0.79 to 1.84 kg/ha. Long‐term changes in yellow eel abundance and silver eel size structure were assessed as part of a fishery monitoring programme. Yellow eel catch per unit effort ( CPUE ) in the lake (from longline surveys) was considerably higher in the 1990s (52.2–62.1 eels/100 hooks) than 2002–2008 (1.9–15.8 eels/100 hooks). Conversely, during 1993–2014, the mean size of silver eels migrating from the lake increased significantly ( p < .001), from 659 mm to 838 mm. The results suggest that in the absence of direct yellow eel abundance data, interannual variation in silver eel size structure may be a useful monitoring tool for local eel stocks as part of Eel Management Plans ( EMP 's). |
author2 |
National University of Ireland, Galway |
format |
Article in Journal/Newspaper |
author |
MacNamara, Ruairí McCarthy, T. Kieran Barry, James |
spellingShingle |
MacNamara, Ruairí McCarthy, T. Kieran Barry, James Estimation of production and long‐term changes in the population of European eel Anguilla anguilla (L.) in an Irish lake |
author_facet |
MacNamara, Ruairí McCarthy, T. Kieran Barry, James |
author_sort |
MacNamara, Ruairí |
title |
Estimation of production and long‐term changes in the population of European eel Anguilla anguilla (L.) in an Irish lake |
title_short |
Estimation of production and long‐term changes in the population of European eel Anguilla anguilla (L.) in an Irish lake |
title_full |
Estimation of production and long‐term changes in the population of European eel Anguilla anguilla (L.) in an Irish lake |
title_fullStr |
Estimation of production and long‐term changes in the population of European eel Anguilla anguilla (L.) in an Irish lake |
title_full_unstemmed |
Estimation of production and long‐term changes in the population of European eel Anguilla anguilla (L.) in an Irish lake |
title_sort |
estimation of production and long‐term changes in the population of european eel anguilla anguilla (l.) in an irish lake |
publisher |
Wiley |
publishDate |
2016 |
url |
http://dx.doi.org/10.1111/eff.12304 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Feff.12304 https://onlinelibrary.wiley.com/doi/pdf/10.1111/eff.12304 |
genre |
Anguilla anguilla |
genre_facet |
Anguilla anguilla |
op_source |
Ecology of Freshwater Fish volume 26, issue 4, page 602-608 ISSN 0906-6691 1600-0633 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/eff.12304 |
container_title |
Ecology of Freshwater Fish |
container_volume |
26 |
container_issue |
4 |
container_start_page |
602 |
op_container_end_page |
608 |
_version_ |
1802640442333855744 |