A successful non-native predator, round goby, in the Baltic Sea: generalist feeding strategy, diverse diet and high prey consumption

Nurkse, Kristiina; Kotta, Jonne; Orav‐Kotta, Helen; Ojaveer, Henn

doi:10.1007/s10750-016-2795-6

Cited by 43 publications

(27 citation statements)

References 59 publications

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“…For instance, species can be dominant when they invade an ecosystem, especially when they are not predated but able to forage efficiently in their new environment. This is the case of the invasive round goby, which has a generalist diet, high consumption rates but faces limited predation by native predators in the Baltic Sea (Nurkse, Kotta, Orav‐Kotta, & Ojaveer, 2016). Such patterns of dominance are also shown by small pelagic fish species dominating in highly productive upwelling ecosystems where they thrive and represent huge abundances (Cury, 2000).…”

Section: Discussionmentioning

confidence: 99%

Trait‐based food web model reveals the underlying mechanisms of biodiversity–ecosystem functioning relationships

Maureaud

Andersen

Zhang

et al. 2020

Journal of Animal Ecology

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1. The concept of biodiversity-ecosystem functioning (BEF) has been studied over the last three decades using experiments, theoretical models and more recently S U PP O RTI N G I N FO R M ATI O N Additional supporting information may be found online in the Supporting Information section. How to cite this article: Maureaud A, Andersen KH, Zhang L, Lindegren M. Trait-based food web model reveals the underlying mechanisms of biodiversity-ecosystem functioning relationships.

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Section: Discussionmentioning

confidence: 99%

Trait‐based food web model reveals the underlying mechanisms of biodiversity–ecosystem functioning relationships

Maureaud

Andersen

Zhang

et al. 2020

Journal of Animal Ecology

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“…Although, the habitats of these two novel species do not yet overlap, the invasion front of the round goby moves fast. In the invaded area the round goby can deplete local benthic invertebrate communities in a very short time 39 and thereby further increase consumer control in food webs. Despite that mud crab prompted a severe reduction of the biomass of one invertebrate prey species only, the associated ecosystem effects were dramatic.…”

Section: Discussionmentioning

confidence: 99%

Novel crab predator causes marine ecosystem regime shift

Kotta

Wernberg

Jänes

et al. 2018

Sci Rep

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The escalating spread of invasive species increases the risk of disrupting the pathways of energy flow through native ecosystems, modify the relative importance of resource (‘bottom-up’) and consumer (‘top-down’) control in food webs and thereby govern biomass production at different trophic levels. The current lack of understanding of interaction cascades triggered by non-indigenous species underscores the need for more basic exploratory research to assess the degree to which novel species regulate bottom-up and/or top down control. Novel predators are expected to produce the strongest effects by decimating consumers, and leading to the blooms of primary producers. Here we show how the arrival of the invasive crab Rhithropanopeus harrisii into the Baltic Sea – a bottom-up controlled ecosystem where no equivalent predators ever existed – appeared to trigger not only strong top-down control resulting in a decline in richness and biomass of benthic invertebrates, but also an increase in pelagic nutrients and phytoplankton biomass. Thus, the addition of a novel interaction – crab predation – to an ecosystem has a potential to reduce the relative importance of bottom-up regulation, relax benthic-pelagic coupling and reallocate large amounts of nutrients from benthic to pelagic processes, resulting in a regime shift to a degraded ecosystem state.

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“…Accordingly, round gobies show a preference for structurally more complex habitats, such as macrophytes and cobbles, over open sand areas in laboratory studies (Bauer et al 2007;Duncan et al 2011). Round gobies are mostly described as generalists with an opportunistic feeding strategy adapting their diet flexibly to prey availability in the environment (Borcherding et al 2013;Brandner et al 2013;Nurkse et al 2016). They prey mainly on benthic macroinvertebrates including crustaceans (e.g.…”

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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A successful non-native predator, round goby, in the Baltic Sea: generalist feeding strategy, diverse diet and high prey consumption

Cited by 43 publications

References 59 publications

Trait‐based food web model reveals the underlying mechanisms of biodiversity–ecosystem functioning relationships

Trait‐based food web model reveals the underlying mechanisms of biodiversity–ecosystem functioning relationships

Novel crab predator causes marine ecosystem regime shift

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

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