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Citation
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HERO ID
7571290
Reference Type
Journal Article
Title
Ontogenetic variations in the diet of two invasive gobies, Neogobius melanostomus (Pallas, 1814) and Ponticola kessleri (Guenther, 1861), from the middle Danube (Slovakia) with notice on their potential impact on benthic invertebrate communities
Author(s)
Stevove, B; Kovac, V
Year
2016
Is Peer Reviewed?
1
Journal
Science of the Total Environment
ISSN:
0048-9697
EISSN:
1879-1026
Volume
557
Page Numbers
510-519
Language
English
DOI
10.1016/j.scitotenv.2016.03.048
URL
https://search.proquest.com/scholarly-journals/ontogenetic-variations-diet-two-invasive-gobies/docview/1787969834/se-2?accountid=171501
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Abstract
In this study, ontogenetic variations in diet of invasive bighead goby Ponticola kessleri and round goby Neogobius melanostomus from the middle Danube were analysed. Index of stomach fullness, Fulton's condition factor, index of food importance, frequency of occurrence, biomass, electivity, and proportions of invasive organisms in their diet were examined. Changes in the diet during ontogeny of both species emphasise the differences in their trophic niches. Our results combined with literary data suggest that bighead goby may threaten small native benthic fish species as a predator (especially in the invasion front), whereas round goby can potentially impact native fish species of all ontogenetic phases by competing for food. Round goby appear to have strong impact on bivalves, especially in the invasion front. High consumption of invasive organisms by bighead goby may help the native macroinvertebrate community. Thus, in contrast to round goby, bighead goby does not seem to be a hot candidate for being a nuisance invader.
Keywords
Environment Abstracts; Biological invasions; Ponto-Caspian gobies; Feeding ecology; Native communities; Invasion front; Neogobius melanostomus; Bivalves; Biomass; Slovakia, Danube R.; Predators; Ponticola kessleri; Slovakia; Invertebrates; Invertebrata; Invasions; ENA 21:Wildlife
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