Bioturbation by the razor clam (Sinonovacula constricta) on the microbial community and enzymatic activities in the sediment of an ecological aquaculture wastewater treatment system

Lukwambe, Betina; Yang, Wen; Zheng, Yuqi; Nicholaus, Regan; Zhu, Jun; Zheng, Zhichao

doi:10.1016/j.scitotenv.2018.06.251

Cited by 57 publications

(27 citation statements)

References 56 publications

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“…For example, bivalves transfer energy from the primary producers (phytoplankton) to the higher trophic level (predators) (Newel, ). In addition, the undigested organic and inorganic materials in their faeces and pseudofaeces are deposited to the sedimental surface, which are essential for the establishment of a suitable microenvironment for the growth of bacteria and protist (Lukwambe et al, ; Newel, ). Moreover, bivalves accumulate heavy metals and organic pollutants in their bodies, which help control water pollution (Al‐Madfa, Abdel‐Moati, & Al‐Gimaly, ; Burns & Smith, ; Dame, ; Lukwambe et al, ; Newel, ).…”

Section: Introductionmentioning

confidence: 99%

“…The meat of S. constricta possesses high levels of n − 3 long‐chain polyunsaturated fatty acids, especially docosahexaenoic acid, which accounts for about 10% of the total fatty acids (Ran, Chen, et al, ; Ran, Li, et al, ). Moreover, S. constricta can drill a depth of 20 cm, changing the benthic oxygen environment, which is conducive to the aquatic ecology (Lukwambe et al, ). Importantly, compared with other marine benthic bivalves, S. constricta grows rapidly and can reach the market sizes within 3 months when the farming conditions are appropriate (Ran, Chen, et al, ).…”

Section: Introductionmentioning

confidence: 99%

“…sedimental surface, which are essential for the establishment of a suitable microenvironment for the growth of bacteria and protist (Lukwambe et al, 2018;Newel, 2004). Moreover, bivalves accumulate heavy metals and organic pollutants in their bodies, which help control water pollution (Al-Madfa, Abdel-Moati, & Al-Gimaly, 1998;Burns & Smith, 1981;Dame, 2016;Lukwambe et al, 2018;Newel, 2004).…”

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confidence: 99%

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Chromosome‐level genome assembly of the razor clam Sinonovacula constricta (Lamarck, 1818)

Ran

Yan

et al. 2019

Molecular Ecology Resources

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Bivalves, a highly diverse and the most evolutionarily successful class of invertebrates native to aquatic habitats, provide valuable molecular resources for understanding the evolutionary adaptation and aquatic ecology. Here, we reported a high‐quality chromosome‐level genome assembly of the razor clam Sinonovacula constricta using Pacific Bioscience single‐molecule real‐time sequencing, Illumina paired‐end sequencing, 10X Genomics linked‐reads and Hi‐C reads. The genome size was 1,220.85 Mb, containing scaffold N50 of 65.93 Mb and contig N50 of 976.94 Kb. A total of 899 complete (91.92%) and seven partial (0.72%) matches of the 978 metazoa Benchmarking Universal Single‐Copy Orthologs were determined in this genome assembly. And Hi‐C scaffolding of the genome resulted in 19 pseudochromosomes. A total of 28,594 protein‐coding genes were predicted in the S. constricta genome, of which 25,413 genes (88.88%) were functionally annotated. In addition, 39.79% of the assembled genome was composed of repetitive sequences, and 4,372 noncoding RNAs were identified. The enrichment analyses of the significantly expanded and contracted genes suggested an evolutionary adaptation of S. constricta to highly stressful living environments. In summary, the genomic resources generated in this work not only provide a valuable reference genome for investigating the molecular mechanisms of S. constricta biological functions and evolutionary adaptation, but also facilitate its genetic improvement and disease treatment. Meanwhile, the obtained genome greatly improves our understanding of the genetics of molluscs and their comparative evolution.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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confidence: 99%

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Chromosome‐level genome assembly of the razor clam Sinonovacula constricta (Lamarck, 1818)

Ran

Yan

et al. 2019

Molecular Ecology Resources

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“…For instance, bioturbating clams (e.g. blood clam Tegillarca granosa, Venus clam, razor clam) can re move N and P accumulated in the sediment and water as they rework the sediment through feeding and burrowing activities (Newell 2004, Lukwambe et al 2018. In this study, T. granosa significantly influenced the contents, distribution, and bioavailable P fractions within the sediments and the amounts of P in the overlying water (Figs.…”

Section: Discussionmentioning

confidence: 70%

“…burrowing, ingestion, and digestion, can reduce the amount of accumulated OM in the sediment ). In addition, the transformation of Org-P to Inorg-P under enhanced microbial and alkaline phosphatase activities in the sediments can result in a decrease of Org-P fractions (Li et al 2013, Lukwambe et al 2018.…”

Section: Discussionmentioning

confidence: 99%

Nutrient cycling in ecological aquaculture wastewater treatment systems: vertical distribution of benthic phosphorus fractions due to bioturbation activity by Tegillarca granosa

Nicholaus¹,

Lukwambe²,

Lai³

et al. 2019

Aquacult. Environ. Interact.

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Fractionation of sediment phosphorus (P) was conducted to examine the distribution and bioavailability of P fractions in a blood clam Tegillarca granosa-based ecological aquaculture wastewater treatment system. In a laboratory experiment, either a low or high density of clams, or no clams (control), were added to a polypropylene chamber containing aquaculture wastewater and an 8 cm sediment layer. Distribution and bioavailability of inorganic P (Inorg-P) -which included exchangeable P (Ex-P), metal oxide-bound P (NaOH-P), calcium-bound P (HCl-P), redoxsensitive P (BD-P), and detrital P (De-P) -and organic P (Org-P) in the sediment were investigated after 30 d using a sequential extraction procedure (SEDEX). Results showed that T. granosa bioturbation activities markedly changed the contents of P fractions, especially Ex-P, NaOH-P, BD-P, and Org-P (p < 0.05). Total Inorg-P varied from 1.83 to 6.75 µmol g −1 , with an average of 4.29 ± 1.37 µmol g −1 among the 3 groups. Org-P ranged from 5.01 to 9.76 µmol g −1 and accounted for 22 to 41% of total P (TP). Despite some variation in contents at different depths, the average proportions of P fractions to TP were, in ascending order, Ex-P, BD-P, NaOH-P, HCl-P, De-P, and Org-P. Inorg-P had the highest proportions (73.83%) of TP. Bioavailable P (Ex-P, NaOH-P, and BD-P) proportions were 61, 58.23, and 44.44%, respectively, relative to the control. The variant contents of the P fractions were most probably due to enhanced organic matter consumption and mineralization, metal oxide dissolutions, and the increased bioavailable P in the bioturbated sediment. This study suggests that T. granosa can modify the concentrations, distribution, and bioavailability of sedimentary P, as well as reduce Org-P. Our study further advances the knowledge on P cycling and provides theoretical assistance for monitoring P in aquatic environments.

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Bellamya aeruginosa (Reeve) regulates bacterial community features in sediment harbouring different submerged macrophytes under different nutrient levels

Chang

et al. 2021

Aquat Sci

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Bioturbation by the razor clam (Sinonovacula constricta) on the microbial community and enzymatic activities in the sediment of an ecological aquaculture wastewater treatment system

Cited by 57 publications

References 56 publications

Chromosome‐level genome assembly of the razor clam Sinonovacula constricta (Lamarck, 1818)

Chromosome‐level genome assembly of the razor clam Sinonovacula constricta (Lamarck, 1818)

Nutrient cycling in ecological aquaculture wastewater treatment systems: vertical distribution of benthic phosphorus fractions due to bioturbation activity by Tegillarca granosa

Bellamya aeruginosa (Reeve) regulates bacterial community features in sediment harbouring different submerged macrophytes under different nutrient levels

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