Diet and feeding strategies of round goby, Neogobius melanostomus (Pallas, 1814) from the invasion front in the Danube River tributaries (Bulgaria): ontogenetic shift and seasonal variation

Dashinov, Dimitriy; Uzunova, E.

doi:10.1016/j.limno.2020.125796

Cited by 16 publications

(13 citation statements)

References 43 publications

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“…Increases in Round Goby populations have led to declines to native fishes in other freshwater environments, most notably in several major European rivers (Danube River and River Rhine) and their tributaries. The continued dispersal and increase in abundance of Round Goby is expected to further increase competition with native fishes in those systems (Borcherding et al 2011 ; Cerwenka et al 2018 ; Dashinov and Uzunova 2020 ). In North America, Round Goby in the Great Lakes has also caused declines to numerous native benthic fishes (e.g.…”

Section: Discussionmentioning

confidence: 99%

Round Goby (Neogobius melanostomus) impacts on benthic fish communities in two tributaries of the Great Lakes

2022

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Numerous fish species in the Laurentian Great Lakes have been negatively impacted by the establishment of the invasive Round Goby (Neogobius melanostomus). However, limited understanding exists as to how Round Goby has impacted small-bodied native benthic fishes after its secondary invasion into tributaries of the Laurentian Great Lakes. To investigate Round Goby impacts on darter species (family Percidae) in tributary ecosystems, catch per unit area (CPUA) of native and non-native fishes from two riverine ecosystems in Southwestern Ontario (Ausable River, Big Otter Creek) were analyzed. Spatial analyses indicated Round Goby CPUA was highest proximate to the Great Lakes, with a sharp decline in CPUA at sites upstream from each lake (Round Goby CPUA approached zero after 18 and 14 km in the Ausable River and Big Otter Creek, respectively). There was some evidence of a negative relationship between the CPUA of Round Goby and several darter species along the tributary gradients, with moderately negative co-occurrence between Round Goby and Rainbow Darter in the Ausable River and Johnny Darter and Percidae species overall in Big Otter Creek. However, overwhelming evidence of negative associations between Round Goby and all darter species was not found. The negative relationship between the CPUA of Round Goby and some darter species was observed over similar time periods since establishment but greater spatial scales than in previous studies, and therefore has important implications for understanding the ecological impacts of Round Goby in tributary ecosystems.

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Section: Discussionmentioning

confidence: 99%

Round Goby (Neogobius melanostomus) impacts on benthic fish communities in two tributaries of the Great Lakes

2022

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“…The prevalence of chironomids in the round goby diet in the Stugna River can be explained by the fact that the macrozoobenthos in the sampled habitat did not have many dreissenids and other molluscs but, on the contrary, were dominated by chironomids that are presumed to be because of the soft substrate. Such a pattern was also observed in some tributaries of the Great Lakes and Danube River, which did not contain Dreissena sp., where the diet of round goby was dominated by chironomids (Dashinov & Uzunova, 2020; Phillips et al, 2003).…”

Section: Discussionmentioning

confidence: 99%

Dietary partitioning of six co‐occurring Ponto‐Caspian gobies in the Dnieper River basin

Didenko

Volikov

Kruzhylina

et al. 2022

Ecology of Freshwater Fish

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The diets and resource partitioning of six co‐occurring gobiids (Caucasian dwarf goby Knipowitschia caucasica; monkey goby, Neogobius fluviatilis; racer goby, Babka gymnotrachelus; round goby, Neogobius melanostomus; bighead goby, Ponticola kessleri; and western tubenose goby, Proterorhinus semilunaris) have been investigated in freshwater of the Dnieper River basin. The studied gobies were characterised by relatively similar generalised feeding strategies with the dominance of chironomid larvae in their diets, except Caucasian dwarf goby, the diet of which was dominated by copepods and cladocerans. The ontogenetic diet shift was clearly observed in all studied gobiids, except Caucasian dwarf gobies, adults of which had almost the same food spectrum as their juveniles. The highest diet overlaps were observed between monkey and racer gobies, and between monkey and round gobies. The lowest values of the diet overlap indices were recorded between Caucasian dwarf and round gobies, and between Caucasian dwarf and bighead gobies. Each studied goby species can be characterised by a unique set of features resulting in dietary partitioning such as consuming prey organisms inhabiting different microhabitats, different sizes, different spawning periods and ontogenetic diet shifts.

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“…Given that C. fluminea form extensive and dense clam beds that can harbour a substantial amount of empty shells (Caffrey et al, 2016), N. melanostomus will likely derive a greater facilitative interaction with mature C. fluminea beds than C. gobio. Indeed, a variety of studies have tentatively linked the successful establishment of N. melanostomus with parallel invasions of various Mollusca, including C. fluminea (Dashinov and Uzunova, 2020). Primarily, as large adult N. melanostomus can consume molluscs (Polačik et al, 2009;Coughlan et al, 2017;Dashinov and Uzunova, 2020), while juvenile N. melanostomus appear to benefit from Dreissena-driven benthification of their nursery environments (Olson and Janssen, 2017).…”

Section: Tablementioning

confidence: 99%

“…Indeed, a variety of studies have tentatively linked the successful establishment of N. melanostomus with parallel invasions of various Mollusca, including C. fluminea (Dashinov and Uzunova, 2020). Primarily, as large adult N. melanostomus can consume molluscs (Polačik et al, 2009;Coughlan et al, 2017;Dashinov and Uzunova, 2020), while juvenile N. melanostomus appear to benefit from Dreissena-driven benthification of their nursery environments (Olson and Janssen, 2017). Facilitative interactions among N. melanostomus and high densities of invasive bivalves may lead to a negative community level effect in terms of invasional meltdown.…”

Section: Tablementioning

confidence: 99%

When worlds collide: Invader-driven benthic habitat complexity alters predatory impacts of invasive and native predatory fishes

Coughlan

Dickey

Dick

et al. 2022

Science of The Total Environment

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Diet and feeding strategies of round goby, Neogobius melanostomus (Pallas, 1814) from the invasion front in the Danube River tributaries (Bulgaria): ontogenetic shift and seasonal variation

Cited by 16 publications

References 43 publications

Round Goby (Neogobius melanostomus) impacts on benthic fish communities in two tributaries of the Great Lakes

Round Goby (Neogobius melanostomus) impacts on benthic fish communities in two tributaries of the Great Lakes

Dietary partitioning of six co‐occurring Ponto‐Caspian gobies in the Dnieper River basin

When worlds collide: Invader-driven benthic habitat complexity alters predatory impacts of invasive and native predatory fishes

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