The diet of the spiny-cheek crayfish Orconectes limosus in the Czech Republic

Vojkovská, Renata; Horká, Ivona; Ďuriš, Zdeněk

doi:10.2478/s11535-013-0189-y

Cited by 11 publications

(11 citation statements)

References 30 publications

(46 reference statements)

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“…The study lakes thus lacked native crayfish, but two non-native species, the red-swamp crayfish (Procambarus clarkia, Girard) and spiny-cheek crayfish (Orconectes limosus, Rafinesque), were present. Originating from North America, both species were successfully introduced in Europe since the late 19th century (Hobbs et al 1989) and detritus is an important food source for both (Gutierrez-Yurrita et al 1998;Vojkovska et al 2014).…”

Section: Study Sitesmentioning

confidence: 99%

Phenological response of a key ecosystem function to biological invasion

et al. 2016

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Although climate warming has been widely demonstrated to induce shifts in the timing of many biological events, the phenological consequences of other prominent global change drivers remain largely unknown. Here, we investigated the effects of biological invasions on the seasonality of leaf litter decomposition, a crucial freshwater ecosystem function. Decomposition rates were quantified in 18 temperate shallow lakes distributed along a gradient of crayfish invasion and a temperature-based model was constructed to predict yearly patterns of decomposition. We found that, through direct detritus consumption, omnivorous invasive crayfish accelerated decomposition rates up to fivefold in spring, enhancing temperature dependence of the process and shortening the period of major detritus availability in the ecosystem by up to 39 days (95% CI: 15-61). The fact that our estimates are an order of magnitude higher than any previously reported climate-driven phenological shifts indicates that some powerful drivers of phenological change have been largely overlooked.

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Section: Study Sitesmentioning

confidence: 99%

Phenological response of a key ecosystem function to biological invasion

et al. 2016

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“…Based on the only report describing the mandibles of troglobitic crayfish (Bouchard, ), the molar field is considerably reduced and undivided in the American species T. maclanei , which feeds mainly on detritus (Bouchard, ; Franz & Lee, ). Detritus is, however, one of the major food sources of epilimnic crayfish taxa (Bouchard, ; Vojkovská et al, ). The molar surface of T. maclanei is unique, consisting of 2–3 low caudal cusps and a small isolated tubercle distantly placed on a smooth cephalic region (Bouchard, : Figure 3k).…”

Section: Discussionmentioning

confidence: 99%

“…While the cardiac stomach is involved in fine physiological pulverizing of its contents via the use of digestive enzymes (Caine, ; Vogt, ), the mandibles are involved in the primary mechanical breakdown of food to smaller particles (Holdich & Reeve, ). These particles might be quite large, measuring up to 5 mm in length (Vojkovská, Horká, & Ďuriš, ). The mandibles are the most anterior of the six pairs of crayfish mouth appendages and lie immediately on either side of the oral opening, posterior to the epistome (Figure 1a).…”

Section: Introductionmentioning

confidence: 99%

“…Similarly, see, for example, Goddard () vs Nyström () for Pacifastacus leniusculus . F. rusticus and Faxonius propinquus are regarded primarily as predators (Roth et al, ; Taylor & Soucek, ), but Faxonius limosus has been stated as a plant feeder by Chybowski (), while Bouchard () generally recognized “ Orconectes species” (most of them now belonging to Faxonius ) as periphyton and detritus feeders; the latter is also evidenced from stomach content analyses by Vojkovská et al ().…”

Section: Introductionmentioning

confidence: 99%

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Comparative morphology of crayfish mandibles, with insight into their evolution

Vojkovská

Horká

Ďuriš

2020

Journal of Morphology

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Mandibles of representatives of the Holarctic crayfish families Astacidae, Cambaridae, and Cambaroididae were examined using SEM, and the results were analyzed in a phylogenetic framework. The intraspecific variability of the incisor process was found to be higher than its interspecific variability, mainly due to extensive abrasion of its ridge during intermolt periods. The plesiomorphic state of the crayfish mandibles highlights the dentate–crenate type of the incisor process and the extensive ribbed molar field with a multicuspidate caudal part, typical of the two parastacid crayfish examined for comparison. For Holarctic crayfish, the initial evolutionary type of the incisor is also the dentate–crenate one, but the molar field has a bowl‐shaped caudal part and reduced cephalic part, both of which have been shown, for example, for Cambaroides. Similar mandibles are also widely present in American cambarids, which further evolved a blade‐like incisor process (some Faxonius spp.) or a tricuspidate or double‐bladed caudal molar field (some Procambarus spp.). The molar field in Astacidae crayfish is subdivided and rugose. The results of the present study indicate that little phylogenetic information is conveyed by the mandible shape at the species or genus level. Evolutionary changes are indicated mainly on the level of the main crayfish families. Research highlights Mandible shape can be an additional characteristic to distinguish crayfish families and selected genera. Obvious differences exist in the molar process rather than in the incisor ridge.

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“…Both species strongly impact ecosystem functioning and native organisms through consumption (e.g. macroinvertebrates, fish, macrophytes; Correia & Anastácio, 2008; Vojkovská et al., 2014), disease transmission (Changeux, 2003), and ecological engineering, with P. clarkii displaying larger burrowing activity than F. limosus (Kouba et al., 2016). Veselý et al.…”

Section: Methodsmentioning

confidence: 99%

Patterns and determinants of phenotypic variability within two invasive crayfish species

2021

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Knowledge on the ecological determinants and evolutionary processes shaping intraspecific variability in the wild remains scarce. It is particularly needed in the context of biological invasions to fully understand the consequences of invasive species on the functioning of recipient ecosystems. Using geometric morphometrics, stable isotopes, and elemental composition analyses, we quantified phenotypic variability (morphological, trophic, and stoichiometric traits) within and among invasive populations of two crayfish species with distinct invasion histories over 23 gravel pit lakes in southwest France. We sampled 12 populations of the red swamp crayfish (Procambarus clarkii Girard, 1852) and 11 populations of the spiny‐cheek crayfish (Faxonius limosus Rafinesque, 1817). We aimed at unravelling the ecological determinants and the mechanisms (neutral or adaptive) underlying the phenotypic variability among invasive populations. We demonstrate that, for each group of traits, P. clarkii and F. limosus display contrasting patterns of variance distribution across three ecological scales (population, sex, individual). Then, we demonstrate that P. clarkii trait variation in body morphology and stoichiometry is associated with both ecological and historical determinants (i.e. predation pressure, intraspecific invasion, and invasion age), and morphological traits in F. limosus vary with ecological factors only (i.e. predation pressure and abundance of P. clarkii). Finally, we highlight that different combinations of neutral and adaptive processes shaped the phenotypic variability in the two species, with a higher contribution of adaptive processes in F. limosus. Overall, these results indicate that F. limosus has already gone through local adaptation in the meta‐population while this has not yet occurred for P. clarkii, which was introduced later. This highlights that these two invasive species might have contrasting effects across ecological scales. Our study emphasises that studying invasive species can provide great knowledge on intraspecific variability and its ecological determinants and evolutionary processes in the wild. Our results also stress the need to focus on intraspecific variability in the context of biological invasions as it can be substantial across wide geographic areas.

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The diet of the spiny-cheek crayfish Orconectes limosus in the Czech Republic

Cited by 11 publications

References 30 publications

Phenological response of a key ecosystem function to biological invasion

Phenological response of a key ecosystem function to biological invasion

Comparative morphology of crayfish mandibles, with insight into their evolution

Patterns and determinants of phenotypic variability within two invasive crayfish species

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