Agonistic interactions and dominance establishment in three crayfish species non-native to Europe

Fořt, Martin; Hossain, Shakhawate; Kouba, Antonín; Buřič, Miloš; Kozák, Pavel

doi:10.1016/j.limno.2018.11.003

Cited by 11 publications

(6 citation statements)

References 69 publications

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“…Importantly, the presence of superior species in terms of growth in the mixed stock resulted in a greater injury rate of smaller counterparts and vice versa. These results are partially supported by previous studies, which showed that, in general, the marbled crayfish is less aggressive than other invasive species, such as the signal crayfish or the common yabby [75], but it may compete with the red swamp crayfish in equal-sized pairings [76,77]. We consider the mere weight contribution of missing and/or regeneration claws to the total weight presented, of secondary importance in the context of this study, and instead highlight the importance of the magnitude of different interspecific growth rates in the evaluated species.…”

Section: Incidence Of Missing And/or Regenerating Clawssupporting

confidence: 85%

Survival, Growth, and Reproduction: Comparison of Marbled Crayfish with Four Prominent Crayfish Invaders

Kouba

Lipták

Kubec

et al. 2021

Biology

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Biological invasions are increasingly recognized ecological and economic threats to biodiversity and are projected to increase in the future. Introduced freshwater crayfish in particular are protruding invaders, exerting tremendous impacts on native biodiversity and ecosystem functioning, as exemplified by the North American spiny-cheek, signal and red swamp crayfish as well as the Australian common yabby. The marbled crayfish is among the most outstanding freshwater crayfish invaders due to its parthenogenetic reproduction combined with early maturation and high fecundity. As their introduced ranges expand, their sympatric populations become more frequent. The question of which species and under what circumstances will dominate in their introduced communities is of great interest to biodiversity conservation as it can offer valuable insights for understanding and prioritization of management efforts. In order to examine which of the aforementioned species may be more successful as an invader, we conducted a set of independent trials evaluating survival, growth, claw injury, and reproduction using single-species stocks (intraspecific interactions) and mixed stocks (interspecific interactions) of marbled crayfish vs. other crayfish invaders since the onset of exogenous feeding. In both single and mixed stocks, red swamp crayfish and yabby grew faster than marbled crayfish, while marbled crayfish were superior to both spiny-cheek and signal crayfish in terms of growth. With the exception of signal crayfish, the faster-growing species consistently reached a higher survival rate. The faster-growing species tended to negatively impair smaller counterparts by greater claw injury, delayed maturation, and reduced fecundity. Only marbled crayfish laid eggs as early as 14 weeks in this study, which is earlier than previously reported in the literature. Thus, the success of marbled crayfish among invasive crayfish is significantly driven by relatively fast growth as well as an early and frequent reproduction. These results shed light on how interactions between invasive populations can unfold when their expansion ranges overlap in the wild, thereby contributing to the knowledge base on the complex population dynamics between existing and emerging invasive species.

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Section: Incidence Of Missing And/or Regenerating Clawssupporting

confidence: 85%

Survival, Growth, and Reproduction: Comparison of Marbled Crayfish with Four Prominent Crayfish Invaders

Kouba

Lipták

Kubec

et al. 2021

Biology

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“…Conversely, Fořt et al (2019) found fights were more frequent and of longer duration in intraspecific contests staged between size and sex-matched C. destructor, P. leniusculus and Procambarus virginalis than interspecific contests between these three species. The contrasting effects presented here in contests between conspecifics and heterospecifics indicate that the outcomes of interspecific contests cannot be predicted as accurately as the outcomes of intraspecific contests.…”

Section: Discussionmentioning

confidence: 69%

“…leniusculus (Söderbäck 1991). Conversely, Fořt et al (2019) found fights were more frequent and of longer duration in intraspecific contests staged between size and sex‐matched C . destructor , P .…”

Section: Discussionmentioning

confidence: 91%

“…Hence, the dominance of C. destructor over Euastacus species is not consistent across all studies. Aggressive asymmetries in the fighting dynamics employed by different species of crayfish can translate to the competitive dominance of one species over another (Fořt et al, 2019;Hudina et al, 2016). The fighting strategies employed by C. destructor were observed to be more aggressive than those used by E. spinifer and this was also noted by Hazlett et al, (2007).…”

Section: Discussionmentioning

confidence: 93%

“…destructor over Euastacus species is not consistent across all studies. Aggressive asymmetries in the fighting dynamics employed by different species of crayfish can translate to the competitive dominance of one species over another (Fořt et al, 2019; Hudina et al, 2016). The fighting strategies employed by C .…”

Section: Discussionmentioning

confidence: 99%

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Does habitat complexity and prior residency influence aggression between invasive and native freshwater crayfish?

2022

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Aggressive encounters between invasive and native species are considered a key threat associated with the spread of invasive species. Extrinsic factors such as habitat complexity can profoundly influence the outcome of aggressive interactions between conspecifics, and this may also be the case in invasive‐native species interactions. This study used invasive and native freshwater crayfish species in Australia as a model system to investigate the influence of habitat complexity on aggression in both intraspecific and interspecific contests. Paired contests between the native Euastacus spinifer and the invasive Cherax destructor were conducted in the laboratory under high and low habitat complexity conditions. Furthermore, the influence of prior residency was examined, with one individual assigned the resident and the other as the intruder. In intraspecific contests, the number of interactions and aggression score were significantly reduced under high complexity conditions; however, complexity had no effect on the time spent interacting and contest outcome. Instead, the two crayfish species differed in terms of time spent interacting. In interspecific contests, complexity had no effect on any of the aggression metrics. Alarmingly, however, we demonstrate that when C. destructor was a resident the likelihood that E. spinifer won a contest fell to a mere 8% compared to 31% when E. spinifer was resident. This study suggests that while habitat complexity plays a role in shaping aggressive behaviour in intraspecific interactions, invasive species are competitively dominant if they are already established i.e. resident in a location and even as intruders. Therefore, preserving habitat complexity in freshwater systems may not be sufficient to sustain populations of native species, and other measures that mitigate the potential for range overlap between the species would also be needed to prevent the further spread of invasive species such as C. destructor within freshwater ecosystems.

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Socializing in experimental streams: crayfish groups exposed to cues, refuges, and day-night conditions

Crowley

Greene

Peter

et al. 2020

J Ethol

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Agonistic interactions and dominance establishment in three crayfish species non-native to Europe

Cited by 11 publications

References 69 publications

Survival, Growth, and Reproduction: Comparison of Marbled Crayfish with Four Prominent Crayfish Invaders

Survival, Growth, and Reproduction: Comparison of Marbled Crayfish with Four Prominent Crayfish Invaders

Does habitat complexity and prior residency influence aggression between invasive and native freshwater crayfish?

Socializing in experimental streams: crayfish groups exposed to cues, refuges, and day-night conditions

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