An invasive species, Carassius gibelio, alters the native fish community through trophic niche competition

Özdilek, Şükran Yalçın; Partal, Nurbanu; Jones, Roger

doi:10.1007/s00027-019-0623-6

Cited by 10 publications

(5 citation statements)

References 58 publications

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“…In the Karamenderes River, the invasive species C. gibelio took place in the freshwater fish module and availed of a similar niche as native species do (Yalçın Özdilek, Partal, & Jones, 2019). According to previous research, B. oligolepis is more sensitive when competing with C. gibelio (Yalçın Özdilek & Jones, 2014).…”

Section: Discussionmentioning

confidence: 99%

“…Such novel habitats and/or communities for an invasive species might be used to assess the establishment of and the spreading risk of an alien species. C. gibelio was dispersed from the Bayramiç Reservoir to the lower sections of the Karamenderes River, and this altered the fish community structure (Yalçın Özdilek et al, 2019). The co‐occurrence network suggests that this species occurred with C. carpio in the Native Freshwater Fish Module, which means that this invasive species is established not only in the reservoir environment but also at various sites from the reservoir to the river mouth.…”

Section: Discussionmentioning

confidence: 99%

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How does a reservoir affect the fish assemblage structure in a Mediterranean River (Turkey)?

Özdilek

Partal

Mestav

2022

River Research & Apps

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Most rivers around the Mediterranean region, regardless of size, are interrupted by human induced barriers. Although various studies have been conducted to investigate the impacts of reservoirs on undisrupted freshwater biota, what kind of effects they exert on the distribution of freshwater fish assemblages with respect to the presence of invasive species remains to be answered. To attend to this research need, the Karamenderes River, which is disrupted by the Bayramiç Reservoir, was selected as the research site. Relying on the river continuum concept (RCC), we hypothesized that fish assemblages in a given river would demonstrate a gradual downstream change unless the river is interrupted by any reservoir. The ad hoc unweighted pair group method with arithmetic means (UPGMA) agglomerative hierarchical cluster analyses revealed 11 fish assemblages 100 km down the studied river, which is characterized by four environmental gradients. Besides, co-occurrence network analyses were performed to gain a better understanding of the constructs of the observed fish assemblages. The analyses yielded two distinct clusters along the river and showed that the Bayramiç Reservoir had no decisive part in the spatial clustering of these fish assemblages. The migratory species Anguilla anguilla was found only in and around the river mouth area. The co-occurrence network analyses indicated that the freshwater, estuarine and introduced species were observable in distinct groups. It is notable that the non-native Cyprinus carpio and invasive Carassius gibelio were determined in the native freshwater fish species module. The research evidenced that the reservoir had a triple effect, that is, a migration barrier to migratory fish species, a donor facilitating invasion, and a cause of homogenization of river fish assemblages along the river. The results suggest that the impact of the reservoir should be assessed in view of multiple nested model and fish passageways and controlling invasive species are two contradictory problems as far as the impacts of reservoirs are concerned. Therefore, river management should be performed in a way to allow the native migratory species to migrate freely while preventing the introduced species from moving upstream or downstream to preserve and promote rivers' heterogeneity.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

How does a reservoir affect the fish assemblage structure in a Mediterranean River (Turkey)?

Özdilek

Partal

Mestav

2022

River Research & Apps

Self Cite

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“…The concept of the isotopic niche was formalised later (Newsome et al, 2007), and further developments in statistical methods allowed the inference of characteristics of the isotopic niche width, comparisons between populations/communities and estimation of niche overlap (Jackson et al, 2011). Currently, the isotopic niche concept is frequently used to assess trophic niche overlap (Larocque et al, 2021) to evaluate the potential impact of introduced species on native communities (Pennock et al, 2021; Yalçın Özdilek et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

The introduced Arapaima gigas in the Bolivian Amazon: Trophic position and isotopic niche overlap with native species

Rejas

Oberdorff

Declerck

et al. 2023

Ecology of Freshwater Fish

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Non‐native fish species may generate major ecological impacts on native assemblages. This study aims to assess the potential impact of the introduced Arapaima gigas on native fish assemblages in two oxbow lakes of the Bolivian Amazon. Stable isotope data were used to determine trophic position (TP) and isotopic niche overlap, to evaluate potential predation and competition interactions, respectively. Results suggest that A. gigas is more an omnivore than a top predator, as often claimed. Arapaima gigas occupied an intermediate TP between detritivore/herbivore and piscivore fish species and showed broader isotopic niche compared to most native species analysed. The isotopic niche of A. gigas significantly overlapped with most native fish species in one lake (i.e. Lake Mentiroso), while there was low niche overlap in the second (i.e. Lake Miraflores). Given its omnivorous tendencies, the predation impact of A. gigas on other fish species is likely less than currently claimed and likely varies with the food web structure of the ecosystem. More precise data on resource availability and use are necessary to infer whether niche overlap will have negative impacts on native fish species through potential competitive interactions. Increasing our understanding on the processes generating impact of these introductions on resident communities through food web ecology will pave the way for better resource management and conservation efforts.

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“…Another major global threat to freshwater fish species is the wide expansion of nonnative species, especially in the Mediterranean region [4,22,23]. When such species establish self-sustaining populations, spread to new environments, and negatively interact with native species, they become invasive, leading to the decline of native fish populations, compromising the structure and dynamics of freshwater ecosystems [24], as they outcompete native species for habitat and resources [25,26]. In addition, the impacts of these pressures on freshwater fish species will be amplified by climate change and other interacting stressors present in the environment [27][28][29][30][31].…”

Section: Introductionmentioning

confidence: 99%

Swimming under Pressure: The Sub-Lethal Effects of a Pesticide on the Behaviour of Native and Non-Native Cypriniformes Fish

Leite,

Mameri,

Branco

et al. 2023

Fishes

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River ecosystems are exposed to a multitude of stressors, including increasing pesticide run-off driven by precipitation and irrigation. Pyrethroids are the fourth major group of insecticides in use worldwide and have extremely negative effects on aquatic fauna. In this study, we aimed to assess the effects of an acute 2 h sub-lethal exposure to different levels of the pyrethroid esfenvalerate on the swimming behaviour of two Cypriniformes species: the native Iberian barbel (Luciobarbus bocagei) and the non-native invasive bleak (Alburnus alburnus). The experimental set-up consisted of previous exposure to three esfenvalerate concentrations (control, 1.2 (low), and 2.0 (high) μg/L) before being stocked in a three-artificial-flume-channel mesocosm for behavioural trials through direct observation. Monitored behaviours included (i) routine activity, (ii) shoal cohesion, and iii) boldness. Significant differences in fish behaviour were detected for the native species (barbel), as individuals spent significantly more time holding position (i.e., resting) in the control (44.9%) than in the high esfenvalerate concentration (25.2%). Concordantly, control barbels were also found to perform more directional changes than the ones exposed to high esfenvalerate concentrations. Behavioural changes were also found for boldness, measured by the proportion of fish attempts to negotiate the upstream ramp, which were significantly higher in the control (37.4%) and in the high concentration (41.5%) compared to the low one (21.1%). Finally, regarding shoal cohesion of the barbel, it was tighter in the control (81.3%) than in the low- (70.5%) and high- (71.1%) esfenvalerate treatments. For the invasive bleak, there were no significant differences in any of the behavioural traits upon previous exposure to an increasing esfenvalerate concentration. This experimental study demonstrated that even short-term exposure to the pyrethroid esfenvalerate was sufficient to alter the behaviour of a native Cypriniformes fish species while not affecting the non-native species. This may confer greater competitive advantages to non-native fish species in the context of global changes.

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An invasive species, Carassius gibelio, alters the native fish community through trophic niche competition

Abstract: An invasive species, Carassius gibelio, alters the native fish community through trophic niche competition

Cited by 10 publications

References 58 publications

How does a reservoir affect the fish assemblage structure in a Mediterranean River (Turkey)?

How does a reservoir affect the fish assemblage structure in a Mediterranean River (Turkey)?

The introduced Arapaima gigas in the Bolivian Amazon: Trophic position and isotopic niche overlap with native species

Swimming under Pressure: The Sub-Lethal Effects of a Pesticide on the Behaviour of Native and Non-Native Cypriniformes Fish

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