Diet overlap between juvenile flatfish and the invasive round goby in the central Baltic Sea

Ustups, Didzis; Bergström, Ulf; Florin, Ann‐Britt; Kruze, E.; Zilniece, D.; Elferts, Didzis; Knospina, E.; Uzars, D.

doi:10.1016/j.seares.2015.06.021

Cited by 43 publications

(30 citation statements)

References 26 publications

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“…Fish are only consumed by larger individuals, whereas fish eggs and juveniles have a rather low contribution to round goby diet (e.g. Vašek et al 2014;Ustups et al 2016;Wiegleb et al 2018;Hempel et al 2019). However, round goby predation on eggs might generally be underestimated (Lutz et al 2020).…”

Section: With Possiblementioning

confidence: 99%

Habitat utilization and feeding ecology of small round goby in a shallow brackish lagoon

Henseler

Kotterba²,

Bonsdorff

et al. 2020

Mar. Biodivers.

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We examined small-scale distribution and feeding ecology of a non-native fish species, round goby (Neogobius melanostomus (Pallas, 1814)), in different habitats of a coastal lagoon situated in the south-western Baltic Sea. First observations of round goby in this lagoon were reported in 2011, 3 years before the current study was conducted, and information on this species’ basic ecology in different habitats is limited. We found that mainly juvenile round gobies are non-randomly distributed between habitats and that abundances potentially correlate positively with vegetation density and thus structural complexity of the environment. Abundances were highest in shallower, more densely vegetated habitats indicating that these areas might act as a refuge for small round gobies by possibly offering decreased predation risk and better feeding resources. Round goby diet composition was distinct for several length classes suggesting an ontogenetic diet shift concerning crustacean prey taxa between small (≤ 50 mm total length, feeding mainly on zooplankton) and medium individuals (51–100 mm, feeding mainly on benthic crustaceans) and another diet shift of increasing molluscivory with increasing body size across all length classes. Differences in round goby diet between habitats within the smallest length class might potentially be related to prey availability in the environment, which would point to an opportunistic feeding strategy. Here, we offer new insights into the basic ecology of round goby in littoral habitats, providing a better understanding of the ecological role of this invasive species in its non-native range, which might help to assess potential consequences for native fauna and ecosystems.

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Section: With Possiblementioning

confidence: 99%

Habitat utilization and feeding ecology of small round goby in a shallow brackish lagoon

Henseler

Kotterba²,

Bonsdorff

et al. 2020

Mar. Biodivers.

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“…By virtue of adults spawning at cold temperatures (2-5°C), pelagic larvae benefit from reduced competition with other species (Jeffries and Terceiro, 1985). After metamorphosis, however, inter-and intraspecific competition among juvenile winter flounder may be greatly enhanced (Karlson et al, 2007;Nissling et al, 2007;Złoch and Sapota, 2010;Ustups et al, 2016). For example, juvenile winter flounder are often confined to specific depth ranges, have relatively low mobility, and possess more ob-vious habitat requirements than pelagic fish (Bailey, 1994).…”

mentioning

confidence: 99%

Feeding habits and dietary overlap of age-0 winter flounder (Pseudopleuronectes americanus) and summer flounder (Paralichthys dentatus) in southern New England tidal rivers

Taylor¹,

Gervasi²

2017

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“…However, since the diet of the round goby has been shown to vary both seasonally and between size groups (e.g. Skora & Rzeznik, 2001;Rakauskas et al, 2008Rakauskas et al, , 2013Brandner et al, 2013b;Ustups et al, 2015), future parasitological studies should investigate both seasonal and size-related differences in the infection rates of the round goby in the Baltic Sea.…”

Section: Discussionmentioning

confidence: 99%

Infection rates and prevalence of metazoan parasites of the non-native round goby (Neogobius melanostomus) in the Baltic Sea

et al. 2016

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Studies in the Baltic Sea have identified over 30 parasite taxa infecting the invasive round goby (Neogobius melanostomus (Pallas, 1814). In this study, we aimed at comparing parasite assemblages and infection rates (prevalence and intensity) in different populations across the invasive range in the Baltic Sea (Denmark, Lithuania, Estonia and Finland). Infection rates were 56-60% across all locations except Lithuania (28%). However, the parasite assemblages in the sampled populations were dissimilar, each location having unique parasites. In addition, many of the parasites were generalists commonly infecting native fish species. Based on the results of this study and those previously conducted in the Baltic Sea, the round goby has not retained parasites from its area of origin, but instead has been successively colonized by native generalist parasites. Although variable, overall parasite richness is still quite low around the Baltic compared to the native areas (34 vs 71 taxa, respectively). Also, prevalence and mean infection intensities in the Baltic Sea are significantly lower than in the native areas. Therefore, the invasion success of the round goby in the Baltic Sea can at least partly be attributed to enemy release, in this case shedding a significant proportion of their native parasite load.

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Diet overlap between juvenile flatfish and the invasive round goby in the central Baltic Sea

Cited by 43 publications

References 26 publications

Habitat utilization and feeding ecology of small round goby in a shallow brackish lagoon

Habitat utilization and feeding ecology of small round goby in a shallow brackish lagoon

Feeding habits and dietary overlap of age-0 winter flounder (Pseudopleuronectes americanus) and summer flounder (Paralichthys dentatus) in southern New England tidal rivers

Infection rates and prevalence of metazoan parasites of the non-native round goby (Neogobius melanostomus) in the Baltic Sea

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