Invasive crayfish (Procambarus clarkii, Girard, 1852) in a managed brackish wetland (Sardinia, Italy): Controlling factors and effects on sedimentary organic matter

Palmas, F.; Podda, Cinzia; Frau, G; Cau, Al; Moccia, Davide; Peddio, Stefania; Solari, Paolo; Pusceddu, Antonio; Sabatini, Andrea

doi:10.1016/j.ecss.2019.106459

Cited by 7 publications

(2 citation statements)

References 69 publications

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“…In addition, benthos can improve microbial OM availability by converting large organic particles into smaller ones which are more easily utilized by microorganisms (Levin et al, 1997;Kristensen and Holmer, 2001;Kristensen et al, 2012). As described by Dadi et al (2017) and Palmas et al (2019), red swamp crayfish bioturbation can contribute to sediment resuspension, thereby increasing the microbial potential to utilize organic substrates. Accordingly, enhanced ORP conditions and increased microbial OM availability could be the main mechanism by which red swamp crayfish affected the microbial community structure in the sediment.…”

Section: Bacterial Community Structure and Functional Compositionmentioning

confidence: 99%

Organic matter degradation and bacterial communities in surface sediment influenced by Procambarus clarkia

Hou

Jia

et al. 2022

Front. Microbiol.

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To alleviate excessive organic matter (OM) accumulation in sediments and reduce the risk of endogenous water pollution and eutrophication in aquaculture ponds, an 84-day experiment investigated the effect of the red swamp crayfish Procambarus clarkii on the OM degradation and bacterial communities in sediments. The experiment established two groups, P. clarkia treatment and control (represented as PG and CG, respectively), with three replicates for each group. At the end of experiment, the total, light fraction, and heavy fraction organic matter concentrations in the sediment of the PG group were significantly lower than those of the CG group. Significantly higher oxidation–reduction potential (ORP) and more extensively degraded OM, indicated by fatty acids, were observed in the PG group. Compared to the CG group, the average OM removal efficiency induced by crayfish in the PG group was 15.24%. Using 16S ribosomal RNA (rRNA) high-throughput sequencing, we investigated the differences in benthic bacterial communities between the PG and CG groups. Linear discriminant analysis (LDA) effect size (LEfSe) analysis revealed that Nitrospirae, Nitrospira, Alphaproteobacteria, OLB14, Nitrospirales, Rhodobacterales, Rhizobiales, Micrococcales, Nitrospiraceae, Rhodobacteraceae, Nitrospira, Rhodobacter, Thermomonas, and Denitratisoma were significantly enriched in the PG group. Four significantly different functional groups related to OM degradation were determined between the PG and CG groups according to the functional annotation of procaryotic taxa (FAPROTAX) analysis. These four functional groups, aerobic chemoheterotrophy, manganese oxidation, dark iron oxidation, and dark sulfide oxidation, showed significantly higher relative abundances in the PG group. Overall, P. clarkia effectively increased the ORP values of sediments to provide favorable conditions for OM degradation and changed the composition and function of bacterial communities to improve bacterial abilities for OM decomposition, thereby promoting OM degradation in the sediment.

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Section: Bacterial Community Structure and Functional Compositionmentioning

confidence: 99%

Organic matter degradation and bacterial communities in surface sediment influenced by Procambarus clarkia

Hou

Jia

et al. 2022

Front. Microbiol.

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“…The red claw crayfish C. quadricarinatus is distinguished by its considerable size, swift growth rate, robust disease resistance, stronger adaptability, and significant economic value, making it an integral choice for integrated rice-crayfish farming since its introduction to China in 1992 [13,14,[17][18][19]. As typical benthic organisms, crayfish can influence aquatic ecosystems, playing a crucial role in biogeochemical cycles and altering benthic bacterial communities at the sediment-water interface [20][21][22][23][24][25]. Meanwhile, exogenous artificial nutrition input in the integrated rice-fish farming system can also have significant impacts on the agroecosystem.…”

Section: Introductionmentioning

confidence: 99%

Influences of the Integrated Rice-Crayfish Farming System with Different Stocking Densities on the Paddy Soil Microbiomes

Hou,

Jia,

Sun

et al. 2024

IJMS

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Integrated rice-fish farming has emerged as a novel agricultural production pattern to address global food security challenges. Aiming to determine the optimal, scientifically sound, and sustainable stocking density of red claw crayfish (Cherax quadricarinatus) in an integrated rice-crayfish farming system, we employed Illumina high-throughput 16S rRNA gene sequencing to evaluate the impact of different stocking densities of red claw crayfish on the composition, diversity, function, and co-occurrence network patterns of soil bacterial communities. The high stocking density of red claw crayfish reduced the diversity and evenness of the soil bacterial community during the mid-culture stage. Proteobacteria, Actinobacteria, and Chloroflexi emerged as the most prevalent phyla throughout the experimental period. Low stocking densities initially boosted the relative abundance of Actinobacteria in the paddy soil, while high densities did so during the middle and final stages. There were 90 distinct functional groups identified across all the paddy soil samples, with chemoheterotrophy and aerobic chemoheterotrophy being the most abundant. Low stocking densities initially favored these functional groups, whereas high densities enhanced their relative abundances in the later stages of cultivation. Medium stocking density of red claw crayfish led to a more complex bacterial community during the mid- and final culture stages. The experimental period showed significant correlations with soil bacterial communities, with total nitrogen (TN) and total phosphorus (TP) concentrations emerging as primary factors contributing to the alterations in soil bacterial communities. In summary, our findings demonstrated that integrated rice-crayfish farming significantly impacted the soil microbiomes and environmental factors at varying stocking densities. Our study contributed to theoretical insights into the profound impact of integrated rice-crayfish farming with various stocking densities on bacterial communities in paddy soils.

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Effects of the invasive red swamp crayfish (Procambarus clarkii) on eelgrass-dominated clearwater lakes: the role of bioturbation

Gao,

Yuan,

Zhang

et al. 2023

Hydrobiologia

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Invasive crayfish (Procambarus clarkii, Girard, 1852) in a managed brackish wetland (Sardinia, Italy): Controlling factors and effects on sedimentary organic matter

Cited by 7 publications

References 69 publications

Organic matter degradation and bacterial communities in surface sediment influenced by Procambarus clarkia

Organic matter degradation and bacterial communities in surface sediment influenced by Procambarus clarkia

Influences of the Integrated Rice-Crayfish Farming System with Different Stocking Densities on the Paddy Soil Microbiomes

Effects of the invasive red swamp crayfish (Procambarus clarkii) on eelgrass-dominated clearwater lakes: the role of bioturbation

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