Pelagic occurrence and diet of invasive round goby Neogobius melanostomus (Actinopterygii, Gobiidae) juveniles in deep well-mixed European reservoirs.

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60077344%3A_____%2F16%3A00459622" target="_blank" >RIV/60077344:_____/16:00459622 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1007/s10750-015-2548-y" target="_blank" >http://dx.doi.org/10.1007/s10750-015-2548-y</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s10750-015-2548-y" target="_blank" >10.1007/s10750-015-2548-y</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Pelagic occurrence and diet of invasive round goby Neogobius melanostomus (Actinopterygii, Gobiidae) juveniles in deep well-mixed European reservoirs.

Popis výsledku v původním jazyce

Round goby is generally accepted to be a typical benthic dwelling fish species both in its native and invasive ranges. Nevertheless, mid-water night trawling in the Biesbosch reservoirs (The Netherlands) identified pelagic occurrence of invasive round goby juveniles, which is the first observation of pelagic utilization in Europe. Subsequent diet analysis revealed the presence of benthic and also pelagic zooplanktonic prey in the digestive tracts of investigated fish, which further confirmed active feeding in the pelagial. Round goby juveniles almost completely avoided the surface water layer and their maximum density always occurred below 6 m in all reservoirs. The observed size spectrum (8-58 mm standard length) included the largest pelagic round goby to ever be mentioned in the scientific literature. Our data also showed that round goby prevailed over other species soon after its invasion into the reservoirs, with native species disappearing from the fry community. This study documents the first evidence of the pelagic occurrence and feeding of round goby juveniles, and confirms the importance of pelagic habitats for early stages of this invasive species in European lentic systems.

Název v anglickém jazyce

Pelagic occurrence and diet of invasive round goby Neogobius melanostomus (Actinopterygii, Gobiidae) juveniles in deep well-mixed European reservoirs.

Popis výsledku anglicky

Round goby is generally accepted to be a typical benthic dwelling fish species both in its native and invasive ranges. Nevertheless, mid-water night trawling in the Biesbosch reservoirs (The Netherlands) identified pelagic occurrence of invasive round goby juveniles, which is the first observation of pelagic utilization in Europe. Subsequent diet analysis revealed the presence of benthic and also pelagic zooplanktonic prey in the digestive tracts of investigated fish, which further confirmed active feeding in the pelagial. Round goby juveniles almost completely avoided the surface water layer and their maximum density always occurred below 6 m in all reservoirs. The observed size spectrum (8-58 mm standard length) included the largest pelagic round goby to ever be mentioned in the scientific literature. Our data also showed that round goby prevailed over other species soon after its invasion into the reservoirs, with native species disappearing from the fry community. This study documents the first evidence of the pelagic occurrence and feeding of round goby juveniles, and confirms the importance of pelagic habitats for early stages of this invasive species in European lentic systems.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

EH - Ekologie – společenstva

OECD FORD obor

—

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2016

Kód důvěrnosti údajů

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

Název periodika

Hydrobiologia

ISSN

0018-8158

e-ISSN

—

Svazek periodika

768

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

13

Strana od-do

197-209

Kód UT WoS článku

000369001400014

EID výsledku v databázi Scopus

2-s2.0-84956692159