Invasive Ponto-Caspian gobies in the diet of piscivorous fish in a European lowland river

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081766%3A_____%2F17%3A00477821" target="_blank" >RIV/68081766:_____/17:00477821 - isvavai.cz</a>

Alternative codes found

RIV/00216224:14310/17:00107143

Result on the web

<a href="http://dx.doi.org/10.1127/fal/2017/1024" target="_blank" >http://dx.doi.org/10.1127/fal/2017/1024</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1127/fal/2017/1024" target="_blank" >10.1127/fal/2017/1024</a>

Result language

angličtina

Original language name

Invasive Ponto-Caspian gobies in the diet of piscivorous fish in a European lowland river

Original language description

Between 2012 and 2013, we estimated predation of non-native Ponto-Caspian gobies by native piscivores in a European mid-sized lowland river by analysing 268 digestive tracts from six native species: perch Perca fluviatilis, burbot Lota lota, European catfish Silurus glanis, pike Esox lucius, Volga zander Sander volgensis and European zander S. lucioperca. Species closely associated with the rip-rap bank had a higher proportion of gobies in their diet (burbot 66 % weight proportion [%m], ≥ 1+ perch 53 %m, ≤ 2+ European catfish 42 %m) than those feeding more in open water (pike 29 %m, Volga zander 4 %m) or those limited by gape size (gobiid remains never observed in 0+ perch or 0+ European zander). Young (≤ 2+) European catfish and ≥ 1+ perch showed positive selection for tubenose goby Proterorhinus semilunaris, while burbot and pike showed a preference for round goby Neogobius melanostomus, though the values may have been affected by the relatively low sample sizes. We estimate that predators consumed approximately 52 % of goby biomass over our study stretch each year (burbot 41 %, ≤ 2+ European catfish 5 %, pike 3 %, all other predatory species < 2 % each), confirming that gobies rapidly become an important component in the aquatic food web of invaded rivers, both by preying on aquatic invertebrates and as prey to native predators (particularly burbot). On the other hand, our data suggest that the long-term impact on European goby populations, at least in our study area, has been limited, as indicated by their ongoing spread.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10617 - Marine biology, freshwater biology, limnology

Project

<a href="/en/project/GBP505%2F12%2FG112" target="_blank" >GBP505/12/G112: ECIP - European Centre of Ichtyoparasitology</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2017

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Fundamental and Applied Limnology / Archiv für Hydrobiologie

ISSN

1863-9135

e-ISSN

—

Volume of the periodical

190

Issue of the periodical within the volume

2

Country of publishing house

DE - GERMANY

Number of pages

15

Pages from-to

157-171

UT code for WoS article

000407540900006

EID of the result in the Scopus database

2-s2.0-85021211020