Physiological properties and tailored feeds to support aquaculture of marbled crayfish in closed systems

Tönges, Sina; Masagounder, Karthik; Gutekunst, Julian; Lohbeck, Jasmin; Miller, AK; Böhl, Florian; Lyko, Frank

doi:10.1101/2020.02.25.964114

Cited by 5 publications

(4 citation statements)

References 44 publications

(42 reference statements)

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“…Its laboratory stocks as well as wild populations usually do not exceed 10 cm of total body length (~20 g). Larger size classes (e.g., up to 12–13 cm) can be found in wild populations [ 50 , 53 ], but the abundance of such size classes is typically low [ 54 , 55 , 56 , 57 ]. In our study, final weight rarely exceeded 5 g (~6 cm total body length) with the greatest values of 10 g, corresponding to ~7.5 cm total body length [ 58 ], achieved in the trial with the spiny-cheek crayfish.…”

Section: Discussionmentioning

confidence: 99%

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: Discussionmentioning

confidence: 99%

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

Kouba

Lipták

Kubec

et al. 2021

Biology

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“…Among all the EAAs, arginine content in red swamp crayfish seems maximum 3,21,30,31 , indicating a supposedly higher arginine demand in crayfish. The same is true for marbled crayfish Procambarus virginalis 32 . Arginine is perhaps the most limiting EAA in most crustacean diets and is required between 1.6-2.7% of diet 33 .…”

Section: Growth Response Of Crayfish To Biofloc Proteinmentioning

confidence: 68%

Recycling biofloc waste as novel protein source for crayfish with special reference to crayfish nutritional standards and growth trajectory

Lunda

Roy

Dvořák

et al. 2020

Sci Rep

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Screening of novel feedstuffs, that too for data-deficient (nutritionally) animals, is somewhat ambiguous or problematic. Through systematic meta-analyses, the present study formulated most up-to-date crayfish nutritional standards, against which a recyclable waste (biofloc biomass, BM) from intensive aquaculture systems was assessed as a novel protein source. Growth trajectory dependencies and thermal growth coefficient qualifying for good growth in crayfish (TGC 0.5–0.64 units) were benchmarked. Using these standards and a 7-week growth trial, BM's suitability as a novel protein source for red swamp crayfish Procambarus clarkii was evaluated through its graded inclusions in a commercial feed. Results suggest that BM can elevate growth at 33–66% inclusion in existing feed formulations. Beyond 66% inclusion, BM can deteriorate growth in crayfish due to high ash content (exceeding physiological limit > 14%), arginine deficiency (~ 14–20% lower than an optimum requirement), and insufficient non-protein energy: protein ratio (3.7 cal mg−1). Arginine is perhaps the most critical amino acid in dietary protein for crayfish, and deficient in BM. Although no critical bioaccumulation levels of heavy metals were breached by feeding 100% BM to crayfish, a mineral and heavy metal (Hg) stress seemed plausible. Crayfish raised solely on biofloc may not realize full growth potential.

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“…While appearing only recently, marbled crayfish is rapidly expanding and undoubtedly a very problematic species from the environmental point of view (Lipt ak et al 2017;Hossain et al 2018 and references therein). Despite this, its spreading stocks in non-native ranges are positively perceived as a cheap food and an attractive source of income (Andriantsoa et al 2020), with biological features that make this species a perfect invader (Jones et al 2009;Chucholl et al 2012) at the same time considered as ideal prerequisites for its controlled culture (Jurmalietis et al 2019;Toenges et al 2020), but see Vogt (2021). Recently, Madzivanzira et al (2020) summarized documented impacts of invasive crayfish species in Africa.…”

Section: Socio-economic Dimensionmentioning

confidence: 99%

The redclaw crayfish: A prominent aquaculture species with invasive potential in tropical and subtropical biodiversity hotspots

Haubrock

Oficialdegui²,

Zeng

et al. 2021

Reviews in Aquaculture

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The redclaw crayfish (Cherax quadricarinatus; hereafter redclaw), native to northern Australia and southern New Guinea, is among the largest freshwater decapods. It matures early and is considered highly prolific as females may lay over one thousand eggs in a single clutch. Despite generally preferring slow-moving streams in its native range, it has a wide environmental tolerance, making it capable of establishing populations when introduced to a wide range of other conditions and habitats. These biological and ecological features render it a highly suitable and popular species for aquaculture worldwide, being the second most important crayfish species economically (after the red swamp crayfish Procambarus clarkii). Adding to that, its unique coloration fuels demand and value among aquarium enthusiasts, making it attractive for the aquarium pet trade. Today, redclaw is widely translocated (67 countries/territories) and various established wild populations (22 countries) have been reported on every continent except Antarctica. Information on its potential or observed impacts, however, is sparse and often anecdotal. To address this gap, this comprehensive review compiles all available information on this species, covering its taxonomy and description, biology and ecology, native and non-native ranges accompanied with documented introduction pathways. Built upon these, we conducted biological and socio-economic classification and species distribution modelling. We reveal a lack of thorough impact assessments for this species despite sufficient indications of major observable impacts at local scales. We call attention to the importance of managing the use of this prominent introduced species in aquaculture and aquarium pet trade.

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Physiological properties and tailored feeds to support aquaculture of marbled crayfish in closed systems

Cited by 5 publications

References 44 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

Recycling biofloc waste as novel protein source for crayfish with special reference to crayfish nutritional standards and growth trajectory

The redclaw crayfish: A prominent aquaculture species with invasive potential in tropical and subtropical biodiversity hotspots

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