Comparative feeding ecology of invasive Ponto-Caspian gobies

Brandner, Joerg; Auerswald, K.; Cerwenka, Alexander F.; Schliewen, Ulrich K.; Geist, Juergen

doi:10.1007/s10750-012-1349-9

Cited by 93 publications

(127 citation statements)

References 73 publications

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“…Thus, in the Middle Danube, competition between bighead and round goby for food does not seem to be a factor that might affect the success of these two highly invasive species of fish in colonizing new habitats. Similar conclusions have been derived for the Upper Danube (Brandner et al, 2013) and the Lower Rhine, though in the latter, juvenile round goby were found to compete on food resources with juvenile bighead goby in spring (Borcherding et al, 2013). Success of invasive organisms is often considered to result from their capability to exploit available ecological niches (Brown, 1989;Williamson, 1996).…”

Section: Table IVsupporting

confidence: 56%

“…Nevertheless, recently, two comprehensive studies on the diet of invasive gobies have been published. The first is from the Lower Rhine (Borcherding et al, 2013), and the second from the Upper Danube (Brandner et al, 2013). Thus, to complement the picture, a detailed taxonomic analysis of the diet spectrum of bighead goby and round goby from the Middle Danube, including seasonal changes in its composition, was undertaken in this study.…”

Section: Introductionmentioning

confidence: 99%

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Do invasive bighead gobyNeogobius kessleriand round gobyN. melanostomus(Teleostei, Gobiidae) compete for food?

Števove

Kováč

2013

Knowl. Managt. Aquatic Ecosyst.

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Key-words: biological invasions, diet composition, feeding strategy, diet competition, DanubeBighead goby (Neogobius kessleri) and round goby (Neogobius melanostomus) have been invading new non-native areas about two decades successfully. In this study, diet spectrum, seasonal variation, feeding strategy and diet overlap between these two invasive species were assessed. Materials were collected from the Danube at Bratislava by fishing rods and/or electrofishing. The diet spectrum of both species was diverse: a total of 46 food types in bighead goby and 51food types in round goby were observed. Dikerogammarus sp., chironomid larvae and Corophium sp. were the most predominant food types in bighead goby, whereas in round goby, chironomid larvae, Corophium sp., bryozoans and Cladocera predominated. The diet varied over seasons. In the Slovak part of the Danube, bighead goby and round goby have adapted to local food resources, consuming diverse food from small to large items, both with soft and/or hard body. This enhances the capability of these invasive species to spread successfully. It appears that even if both exploit similar food resources, their proportional content differs. Further differences between these gobies were also found in their food behaviour and feeding strategy. Both species tend to be specialists where possible, but round goby demonstrates higher flexibility towards general feeding strategy. RÉSUMÉLes gobies invasifs de Kessler Neogobius kessleri et le gobie à tâches noires N. melanostomus (Teleostei, Gobiidae) sont-ils en compétition pour la nourriture ? le gobie de Kessler et le gobie à tâches noires se sont adaptés à des ressources alimentaires locales, consommant une nourriture variée allant de petites à de grandes proies, à corps mou et/ou dur. Cela augmente la capacité de ces espèces envahissantes à se propager avec succès. Il semble que même si les deux espèces exploitent des ressources alimentaires similaires, leurs proportions diffèrent. D'autres différences entre ces gobies ont également été trouvées dans leur comportement alimentaire et leur stratégie d'alimentation. Les deux espèces ont tendance à être des spécialistes lorsque cela est possible, mais le gobie à tâches noires démontre une plus grande flexibilité allant vers une stratégie alimentaire plus généraliste. Mots

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Section: Table IVsupporting

confidence: 56%

Section: Introductionmentioning

confidence: 99%

Do invasive bighead gobyNeogobius kessleriand round gobyN. melanostomus(Teleostei, Gobiidae) compete for food?

Števove

Kováč

2013

Knowl. Managt. Aquatic Ecosyst.

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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%

“…The great invasion success of the species has partly been explained by its pronounced phenotypic plasticity in terms of life-history traits (MacInnis & Corkum, 2000;Gutowsky & Fox, 2012;Brandner et al, 2013a), feeding habits (Brandner et al, 2013b) as well as tolerance of different salinity regimes (Karsiotis et al, 2012; see review by Kornis et al, 2012). Many researchers have also suggested the lack of natural enemies as a major contributing factor (Sapota & Skora, 2005;Kvach & Skóra, 2006;Kvach & Stepien, 2008;Gendron et al, 2012).…”

Section: Introductionmentioning

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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“…We used two predator species: the Ponto-Caspian racer goby Babka gymnotrachelus (Kessler, 1857), sympatric to the selected amphipods, expanding its range in Europe together with them and including them in their diet (Kakareko et al, 2005;Brandner et al, 2013), as well as the red piranha Pygocentrus nattereri, a species with no common evolutionary history with the tested amphipods. Therefore, we could test gammarid responses to familiar predators as well as to those they meet for the first time.…”

Section: Origin and Maintenance Of Animalsmentioning

confidence: 99%

Predator diet, origin or both? Factors determining responses of omnivorous amphipods to predation cues

Jermacz

Dzierżyńska‐Białończyk

Kobak

2016

Hydrobiologia

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Detection of chemical cues of predators and food resources is a key for the behaviour of many species in aquatic ecosystems. We checked whether predator origin and diet, containing potential food and/ or alarm signals, affect the behaviour of omnivorous prey partly sharing their diet with a top predator. We conducted y-maze experiments to study the responses of invasive omnivorous and cannibalistic amphipods (Dikerogammarus villosus and Pontogammarus robustoides) to chemical cues of fish predators, injured amphipods and chironomid larvae (common amphipod food). As the predators, we used the goby Babka gymnotrachelus (sympatric with the amphipods) and piranha Pygocentrus nattereri (allopatric to the amphipods). The fish were either starved or fed amphipods or chironomids. D. villosus preferred predators fed chironomids and conspecifics as well as crushed conspecifics and chironomids, but avoided both hungry predators. Thus, D. villosus may perceive the presence of a top predator as an indication of both food resource and predation risk. P. robustoides avoided predators fed both amphipods (particularly conspecifics) and their alarm substances. The responses of both species depended more on the predator diet than on its species, which is likely to facilitate the recognition of allopatric predators and survival in newly invaded areas.

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Comparative feeding ecology of invasive Ponto-Caspian gobies

Cited by 93 publications

References 73 publications

Do invasive bighead gobyNeogobius kessleriand round gobyN. melanostomus(Teleostei, Gobiidae) compete for food?

Do invasive bighead gobyNeogobius kessleriand round gobyN. melanostomus(Teleostei, Gobiidae) compete for food?

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

Predator diet, origin or both? Factors determining responses of omnivorous amphipods to predation cues

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