Piscivorous eels in Lake Constance : can they influence year class strength of perch?
Research on predator-prey relationships in the littoral zone of Lake Constance showed that eels (Anguilla anguilla (L.)) were the most numerous piscivorous predators in the shallow water zones up to 3-metres depth in 1992. From July on fish was the most important component of the diet of eels. Perch...
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ftubkonstanz:oai:kops.uni-konstanz.de:123456789/8558 2024-02-11T09:55:32+01:00 Piscivorous eels in Lake Constance : can they influence year class strength of perch? Radke, Robert J. Eckmann, Reiner 1996 application/pdf http://nbn-resolving.de/urn:nbn:de:bsz:352-opus-39777 eng eng http://nbn-resolving.de/urn:nbn:de:bsz:352-opus-39777 273514512 http://creativecommons.org/licenses/by-nc-nd/2.0/ Annales Zoologici Fennici. 1996, 33, pp. 489-494 ddc:570 doc-type:article doc-type:Text 1996 ftubkonstanz 2024-01-21T23:55:57Z Research on predator-prey relationships in the littoral zone of Lake Constance showed that eels (Anguilla anguilla (L.)) were the most numerous piscivorous predators in the shallow water zones up to 3-metres depth in 1992. From July on fish was the most important component of the diet of eels. Perch (Ferca fluviatilis L.), burbot (Lota Iota (L.)) and bream (Abramis brama (L.)) were the most frequently consumed fish. As 61% of all identifiable fish the eels had consumed were perch, an attempt was made to estimate the impact of eel predation on the young-of-the-year (y-o-y) of the perch population. Consumption by the total eel population never exceeded the amount of perch fry consumed by adult, cannibalistic perch estimated in other studies, but it seems possible that eel predation could have an adverse influence on weak year classes. Further reoligotrophication of the lake might lead to even higher fish consumption by the eels due to declining benthic production and consequent increased predation pressure. published published Article in Journal/Newspaper Anguilla anguilla Burbot lota KOPS - The Institutional Repository of the University of Konstanz Brama ENVELOPE(-58.467,-58.467,-62.208,-62.208) |
institution |
Open Polar |
collection |
KOPS - The Institutional Repository of the University of Konstanz |
op_collection_id |
ftubkonstanz |
language |
English |
topic |
ddc:570 |
spellingShingle |
ddc:570 Radke, Robert J. Eckmann, Reiner Piscivorous eels in Lake Constance : can they influence year class strength of perch? |
topic_facet |
ddc:570 |
description |
Research on predator-prey relationships in the littoral zone of Lake Constance showed that eels (Anguilla anguilla (L.)) were the most numerous piscivorous predators in the shallow water zones up to 3-metres depth in 1992. From July on fish was the most important component of the diet of eels. Perch (Ferca fluviatilis L.), burbot (Lota Iota (L.)) and bream (Abramis brama (L.)) were the most frequently consumed fish. As 61% of all identifiable fish the eels had consumed were perch, an attempt was made to estimate the impact of eel predation on the young-of-the-year (y-o-y) of the perch population. Consumption by the total eel population never exceeded the amount of perch fry consumed by adult, cannibalistic perch estimated in other studies, but it seems possible that eel predation could have an adverse influence on weak year classes. Further reoligotrophication of the lake might lead to even higher fish consumption by the eels due to declining benthic production and consequent increased predation pressure. published published |
format |
Article in Journal/Newspaper |
author |
Radke, Robert J. Eckmann, Reiner |
author_facet |
Radke, Robert J. Eckmann, Reiner |
author_sort |
Radke, Robert J. |
title |
Piscivorous eels in Lake Constance : can they influence year class strength of perch? |
title_short |
Piscivorous eels in Lake Constance : can they influence year class strength of perch? |
title_full |
Piscivorous eels in Lake Constance : can they influence year class strength of perch? |
title_fullStr |
Piscivorous eels in Lake Constance : can they influence year class strength of perch? |
title_full_unstemmed |
Piscivorous eels in Lake Constance : can they influence year class strength of perch? |
title_sort |
piscivorous eels in lake constance : can they influence year class strength of perch? |
publishDate |
1996 |
url |
http://nbn-resolving.de/urn:nbn:de:bsz:352-opus-39777 |
long_lat |
ENVELOPE(-58.467,-58.467,-62.208,-62.208) |
geographic |
Brama |
geographic_facet |
Brama |
genre |
Anguilla anguilla Burbot lota |
genre_facet |
Anguilla anguilla Burbot lota |
op_source |
Annales Zoologici Fennici. 1996, 33, pp. 489-494 |
op_relation |
http://nbn-resolving.de/urn:nbn:de:bsz:352-opus-39777 273514512 |
op_rights |
http://creativecommons.org/licenses/by-nc-nd/2.0/ |
_version_ |
1790597138376294400 |