Age structure, condition and length increase of the topmouth gudgeon (Pseudorasbora parva Schlegel 1842) in non-native populations of small rivers of Poland

Monitoring studies of ichthyofauna, in particular non-indigenous species, are an important element of research on aquatic ecosystems. This information is essential for modelling population growth and predicting rates of expansion, quantifying ecological impacts and assessing the efficacy of removal...

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Main Authors: Czerniejewski Przemysław, Zatoń Kinga, Kasowska Natalia, Brysiewicz Adam
Format: Article
Language:English
Published: Sciendo 2019-03-01
Series:Journal of Water and Land Development
Subjects:
Online Access:http://www.degruyter.com/view/j/jwld.2019.40.issue-1/jwld-2019-0012/jwld-2019-0012.xml?format=INT
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spelling doaj-99ac2d7c84eb4cdfb8fdded4ef9feb9b2020-11-25T00:15:58ZengSciendoJournal of Water and Land Development2083-45352019-03-0140111311810.2478/jwld-2019-0012jwld-2019-0012Age structure, condition and length increase of the topmouth gudgeon (Pseudorasbora parva Schlegel 1842) in non-native populations of small rivers of PolandCzerniejewski Przemysław0Zatoń Kinga1Kasowska Natalia2Brysiewicz Adam3West Pomeranian University of Technology in Szczecin, Faculty of Food Sciences and Fisheries, Szczecin, PolandWest Pomeranian University of Technology in Szczecin, Faculty of Food Sciences and Fisheries, Szczecin, PolandWest Pomeranian University of Technology in Szczecin, Faculty of Food Sciences and Fisheries, Szczecin, PolandInstitute of Technology and Life Sciences, al. Hrabska 3, 05-090Raszyn, PolandMonitoring studies of ichthyofauna, in particular non-indigenous species, are an important element of research on aquatic ecosystems. This information is essential for modelling population growth and predicting rates of expansion, quantifying ecological impacts and assessing the efficacy of removal and control strategies. Actually, the most compelling fish invasion in Polish freshwaters is arguably the accidental introduction of the topmouth gudgeon (Pseudorasbora parva). Age and lengths structure, condition factor and growth rate of the invasive populations of the topmouth gudgeon from small Polish rivers was examined. The samples were collected from the rivers: Molnica (n = 41), Myśla (n = 21) and Wardynka (n = 101) soon after the invasion was recorded (2017). Estimated ages of topmouth gudgeon ranged from 1+ to 3+ for the Myśla River, from 1+ do 4+ for the Molnica River, and from 1+ to 5+ for the Wardynka River. The fish from the Molnica River was characterised by the lowest total and standard length (TL, SL), weight, and highest condition. The results of back-calculations and the parameters of von Bertalanffy’s growth equation revealed distinct disproportions in the standard length (mm) in individual age groups (Molnica River: Lt = 54.94 [1 – e−0.68885 (1 − 0.003404)], Myśla River: Lt = 55.39 [1 – e−0.74921 (1 – 0.030962)], Wardynka River: Lt = 66.33 [1 – e−0.69348 (1 – 0.369505)]). The introduction of the topmouth gudgeon occurred in the upper and medium sectors of small rivers, but in subsequent years the species migrated to new sites further downstream and this may have affected the native ichthyofauna.http://www.degruyter.com/view/j/jwld.2019.40.issue-1/jwld-2019-0012/jwld-2019-0012.xml?format=INTfishfish agefish conditionfish growthinvasive speciesPseudorasbora parvasmall river
collection DOAJ
language English
format Article
sources DOAJ
author Czerniejewski Przemysław
Zatoń Kinga
Kasowska Natalia
Brysiewicz Adam
spellingShingle Czerniejewski Przemysław
Zatoń Kinga
Kasowska Natalia
Brysiewicz Adam
Age structure, condition and length increase of the topmouth gudgeon (Pseudorasbora parva Schlegel 1842) in non-native populations of small rivers of Poland
Journal of Water and Land Development
fish
fish age
fish condition
fish growth
invasive species
Pseudorasbora parva
small river
author_facet Czerniejewski Przemysław
Zatoń Kinga
Kasowska Natalia
Brysiewicz Adam
author_sort Czerniejewski Przemysław
title Age structure, condition and length increase of the topmouth gudgeon (Pseudorasbora parva Schlegel 1842) in non-native populations of small rivers of Poland
title_short Age structure, condition and length increase of the topmouth gudgeon (Pseudorasbora parva Schlegel 1842) in non-native populations of small rivers of Poland
title_full Age structure, condition and length increase of the topmouth gudgeon (Pseudorasbora parva Schlegel 1842) in non-native populations of small rivers of Poland
title_fullStr Age structure, condition and length increase of the topmouth gudgeon (Pseudorasbora parva Schlegel 1842) in non-native populations of small rivers of Poland
title_full_unstemmed Age structure, condition and length increase of the topmouth gudgeon (Pseudorasbora parva Schlegel 1842) in non-native populations of small rivers of Poland
title_sort age structure, condition and length increase of the topmouth gudgeon (pseudorasbora parva schlegel 1842) in non-native populations of small rivers of poland
publisher Sciendo
series Journal of Water and Land Development
issn 2083-4535
publishDate 2019-03-01
description Monitoring studies of ichthyofauna, in particular non-indigenous species, are an important element of research on aquatic ecosystems. This information is essential for modelling population growth and predicting rates of expansion, quantifying ecological impacts and assessing the efficacy of removal and control strategies. Actually, the most compelling fish invasion in Polish freshwaters is arguably the accidental introduction of the topmouth gudgeon (Pseudorasbora parva). Age and lengths structure, condition factor and growth rate of the invasive populations of the topmouth gudgeon from small Polish rivers was examined. The samples were collected from the rivers: Molnica (n = 41), Myśla (n = 21) and Wardynka (n = 101) soon after the invasion was recorded (2017). Estimated ages of topmouth gudgeon ranged from 1+ to 3+ for the Myśla River, from 1+ do 4+ for the Molnica River, and from 1+ to 5+ for the Wardynka River. The fish from the Molnica River was characterised by the lowest total and standard length (TL, SL), weight, and highest condition. The results of back-calculations and the parameters of von Bertalanffy’s growth equation revealed distinct disproportions in the standard length (mm) in individual age groups (Molnica River: Lt = 54.94 [1 – e−0.68885 (1 − 0.003404)], Myśla River: Lt = 55.39 [1 – e−0.74921 (1 – 0.030962)], Wardynka River: Lt = 66.33 [1 – e−0.69348 (1 – 0.369505)]). The introduction of the topmouth gudgeon occurred in the upper and medium sectors of small rivers, but in subsequent years the species migrated to new sites further downstream and this may have affected the native ichthyofauna.
topic fish
fish age
fish condition
fish growth
invasive species
Pseudorasbora parva
small river
url http://www.degruyter.com/view/j/jwld.2019.40.issue-1/jwld-2019-0012/jwld-2019-0012.xml?format=INT
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