Fish predation on sympatric and allopatric prey—A case study of Ponto-Caspian gobies, European bullhead and amphipods

Błońska, Dagmara; Grabowska, Joanna; Kobak, Jarosław; Rachalewski, Michał; Bącela-Spychalska, Karolina

doi:10.1016/j.limno.2016.06.003

Cited by 11 publications

(21 citation statements)

References 51 publications

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“…The lower consumption of D. villosus compared to Gammarus roeselii by the turbot (Lota lota) was also observed by . A similar result was shown by Błońska et al (2015) villosus determined its survival under the pressure of these predator species (Błońska et al, 2016). The coarse and complex substratum (gravel, stones and zebra mussel colonies) also improved the survival of D. villosus compared to fine substrata and other gammarid species (Kinzler & Maier, 2006;Kobak, Jermacz & Płąchocki, 2014).…”

Section: Dikerogammarus Villosus As Preysupporting

confidence: 74%

“…Under experimental conditions, D. villosus, exhibited higher survival than other gammarids, including both native and invasive species, in the presence of diverse predators, such as the sympatric Ponto-Caspian gobies or the allopatric European bullhead and Amur sleeper Błońska et al, 2015;Błońska et al, 2016). The lower consumption of D. villosus compared to Gammarus roeselii by the turbot (Lota lota) was also observed by .…”

Section: Dikerogammarus Villosus As Preymentioning

confidence: 76%

“…These observations confirm that D. villosus is a comparatively poor food item for its potential predators, and is likely to be avoided in the presence of alternative prey species, which can make it relatively safe in the natural environment. Generally, amphipods are considered as one of the most important elements of the diet of many fish species , however experimental results (Kobak, Jermacz & Płąchocki, 2014;Błońska et al, 2015Błońska et al, , 2016) demonstrated that the role of D. villosus as food for the fish community could be significantly different than that of its native counterparts, often replaced by the alien species (Dick & Platvoet, 2000;Dick, Platvoet & Kelly, 2002;Beggel et al, 2016).…”

Section: Dikerogammarus Villosus As Preymentioning

confidence: 99%

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The Braveheart amphipod: A review of responses of invasive Dikerogammarus villosus to predation signals

Jermacz

Kobak

2018

Preprint

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Predator pressure is a fundamental force driving changes at all levels of the community structure. It may protect native ecosystems from alien species. Therefore, resistance to diverse predators resulting from a universal anti-predator strategy seems crucial for invasion success. We present a comprehensive review of the responses of an invasive amphipod Dikerogammarus villosus to sympatric and allopatric predator signals. We summarize diverse aspects of the gammarid anti-predator strategy, including predator identification, morphological and behavioral adaptations, effectiveness of shelter use and resistance to indirect predator effects. The response of D. villosus is independent of predator species (including totally allopatric taxa), which assures the high flexibility of its predator recognition system. It has harder exoskeleton and better capability of utilizing shelters compared to other gammarids, resulting in relatively high resistance to predators. Therefore, it can use predator kairomones as indirect food signals (sharing the diet with the predator) and follow the predator scent. This resistance may allow D. villosus to reduce the costs of its physiological responses to predators and sustain growth in their presence. This might facilitate the invasion success by increasing its competitive advantage.

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Section: Dikerogammarus Villosus As Preysupporting

confidence: 74%

Section: Dikerogammarus Villosus As Preymentioning

confidence: 76%

Section: Dikerogammarus Villosus As Preymentioning

confidence: 99%

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The Braveheart amphipod: A review of responses of invasive Dikerogammarus villosus to predation signals

Jermacz

Kobak

2018

Preprint

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“…Some differences between the test species were noted, for example the reduction in TBARS of D. villosus occurred independently of the type of predation risk (constant vs. periodic), whereas G. jazdzewskii showed such a response only when periodically stimulated by the predator cue. Dikerogammarus villosus exhibits one of the highest survival rates among gammarids when experimentally exposed to predators, indicating the effectiveness of its anti-predator defences [43][44][45] . Compared to G. jazdzewskii, D. villosus is more armoured, less active, efficiently uses hard substrata as shelters and is able to form aggregations efficiently reducing predation risk 44,46 .…”

Section: Discussionmentioning

confidence: 99%

Continuity of chronic predation risk determines changes in prey physiology

Jermacz

Kletkiewicz

Nowakowska

et al. 2020

Sci Rep

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Prey reconfigure their physiology to avoid costs of prolonged predator pressure. However, these changes might not occur under periodic predation risk, with repeating acute phases. To test the effect of predation risk continuity on changes in prey physiology, we exposed amphipods: Dikerogammarus villosus and Gammarus jazdzewskii to periodic and constant predation cue. After one week, we measured: cellular defence systems: total antioxidant status (TAS), heat shock proteins (Hsp70); intracellular damage marker: lipid peroxidation (TBARS); condition index: glycogen concentration. Predator presence reduced TAS level in G. jazdzewskii independent of its continuity and in D. villosus after periodic exposure. Amphipods showed downregulation of Hsp70 when exposed to periodic (D. villosus) or constant (G. jazdzewskii) predation risk. Exposure to predators reduced TBARS level in D. villosus (irrespective of the continuity) and G. jazdzewskii (periodic exposure). Glycogen concentration in both species was not affected by predator presence. Thus, the continuity of the predator cue shaped prey physiology reconfiguration, optimizing costs of physiological adjustments under challenging conditions. Nevertheless, the lack of negative consequences of the prolonged exposure to the predator cue, whether constant or periodic, shows that amphipods can thrive under chronic predation risk, which is a constant part of the wild environment.

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“…Accordingly, its physiological response is not as pronounced as that exhibited by species relying on their inducible defence mechanisms. On the other hand, G. jazdzewskii exposed to predation in a limited space has been experimentally demonstrated to have a lower survival rate than other gammarids, even in sheltered conditions (Kobak et al 2014;Błońska et al 2015Błońska et al , 2016Schmidt-Drewello et al 2016). Therefore, to reduce predation risk in natural conditions, G. jazdzewskii has to relocate immediately after the detection of a predator.…”

Section: Discussionmentioning

confidence: 99%

Experimental evidence for the adaptive response of aquatic invertebrates to chronic predation risk

et al. 2020

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As acute stress induced by predation risk can generate significant oxidative damage, prey organisms are forced to balance their defence reaction and the cost of activating the cellular defence system. Stress tolerance differs significantly among species; therefore predator pressure indirectly shapes the community structure. To test adaptation abilities of amphipod crustaceans (Dikerogammarus villosus and Gammarus jazdzewskii) we exposed them to acute (35 min.) and chronic (1 or 7 days) predation risk (the Eurasian perch). We measured respiration (related to metabolic rate), cellular defence systems (antioxidant enzyme (catalase) activity and heat shock protein (Hsp70) concentration), and the level of oxidative damage (thiobarbituric acid reactive substances (TBARS) concentration). Both amphipods increased their respiration rate in the presence of predation cues, irrespective of the duration of their pre-exposure to danger. This increase in D. villosus was initiated more quickly (immediately vs. after 10 min. of the test) and lasted for a longer time (20 vs. 10 min.) than in G. jazdzewskii. However, only G. jazdzewskii after a short exposure to predation risk exhibited an increase in its catalase activity, Hsp70 concentration and oxidative damage. No changes in these parameters were exhibited by D. villosus or after a chronic exposure of G. jazdzewskii to predation cues. Our results show that prey organisms are able to reconfigure their physiology to maintain increased metabolic rate under prolonged predator pressure and, at the same time, reduce oxidative damage as well as costs related to anti-oxidant defence.

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Fish predation on sympatric and allopatric prey—A case study of Ponto-Caspian gobies, European bullhead and amphipods

Cited by 11 publications

References 51 publications

The Braveheart amphipod: A review of responses of invasive Dikerogammarus villosus to predation signals

The Braveheart amphipod: A review of responses of invasive Dikerogammarus villosus to predation signals

Continuity of chronic predation risk determines changes in prey physiology

Experimental evidence for the adaptive response of aquatic invertebrates to chronic predation risk

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