Perulernaea gamitanae (Copepoda: Lernaeidae) parasitizing tambaqui (Colossoma macropomum) (Characidae) and the hybrids tambacu and tambatinga, cultured in northern Brazil

The infestation rate in Colossoma macropomum, hybrid tambacu (C. macropomum x Piaractus mesopotamicus) and hybrid tambatinga (C. macropomum x Piaractus brachypomum) with Perulernaea gamitanae Thatcher and Paredes, 1985 from two fish farms in Amapá State, Brazil was studied. Lernaeid parasites (n=2887) were collected mainly on the tongue and the mouth cavity and also on cartilage of gill arches and filaments. Inflammation and fibrous nodules were observed on the attachment sites of the parasites. The infestation rate varied according to the fish farm and host. The prevalence of P. gamitanae was of 100% in hosts from one fish farm and was lower in the other fish farm. Higher intensity of P. gamitanae occurred in hybrids tambacu and tambatinga, but despite the high prevalence its intensity was moderate. This is the first report on epidemiology of P. gamitanae in cultured fishes from Brazilian Amazonia, and the occurrence of this crustacean parasite in two new hosts, the hybrids tambacu and tambatinga.

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First record of Neoechinorhynchus buttnerae (Eoacantocephala, Neochinorhynchidae) on Colossoma macropomum (Characidae) in a fish farm in Roraima, Brazil

Acta Amazonica ◽

10.1590/1809-4392201702411 ◽

2018 ◽

Vol 48 (1) ◽

pp. 42-45 ◽

Cited By ~ 7

Author(s):

Jeffson Nobre PEREIRA ◽

Germán Augusto Murrieta MOREY

Keyword(s):

Condition Factor ◽

First Record ◽

Fish Farm ◽

Fish Farms ◽

Colossoma Macropomum ◽

Relative Condition Factor ◽

Severe Infections ◽

Northern Brazil ◽

Positive Correlations ◽

First Time

ABSTRACT Severe infections by the acanthocephalan Neoechinorhynchus buttnerae were reported in Colossoma macropomum in fish farms in northern Brazil. The occurrence of the parasite is recorded for the first time in the state of Roraima, Brazil, along with its parasite indexes. Fifty C. macropomum from a fish farm were analyzed. We collected a total of 13474 individual parasites. Neoechinorhynchus buttnerae had a prevalence of 100%, and mean intensity and mean abundance of 269.48. Significant positive correlations were observed between fish standard length, weight and relative condition factor and the number of parasites. Our results showed evident loss of body mass in the parasitized fish. Fish farmers in Roraima should be advised to manage the infection of C. macropomum by N. buttnerae, as massive infections of this parasite can deteriorate the health of the fish.

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Parasitic infections in tambaqui from eight fish farms in Northern Brazil

Arquivo Brasileiro de Medicina Veterinária e Zootecnia ◽

10.1590/1678-4162-7592 ◽

2015 ◽

Vol 67 (4) ◽

pp. 1070-1076 ◽

Cited By ~ 11

Author(s):

M.K.R. Dias ◽

L.R. Neves ◽

R.G.B. Marinho ◽

M. Tavares-Dias

Keyword(s):

Water Quality ◽

Parasite Species ◽

Parasitic Infection ◽

Parasitic Infections ◽

Ichthyophthirius Multifiliis ◽

Fish Farms ◽

Colossoma Macropomum ◽

Northern Brazil

The aim of this study was to evaluate the parasites and parasite-host relationship in Colossoma macropomum from eight fish farms in Amapá State, Northern Brazil. A total of 12,242,559 parasites were recovered from hosts in the eight fish farms, and 87.4% of fish were infected by one or more parasite species, such as Ichthyophthirius multifiliis, Piscinoodinium pillulare, Trichodinasp. and Tetrahymena sp. (Protozoa), Anacanthorus spathulatus, Linguadactyloides brinkmanni, Mymarothecium boegeri and Notozothecium janauachensis (Monogenoidea), Procamallanus(Spirocamallanus) inopinatus (Nematoda) and Perulernaea gamitanae and Braga patagonica (Crustacea). Ichthyophthirius multifiliis presented dominance, but the greatest levels of parasitism were caused by I. multifiliis, P. pilulare, monogenoideans species and P. gamitanae, and all these parasites had an aggregate dispersion. The eight fish farms have differences in the parasitic infection levels, management and water quality, which are further discussed here.

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On Dactylogyridae (Monogenea) of four species of characid fishes from Brazil

Check List ◽

10.15560/5.2.351 ◽

2009 ◽

Vol 5 (2) ◽

pp. 351 ◽

Cited By ~ 12

Author(s):

Simone Chinicz Cohen ◽

Anna Kohn

Keyword(s):

Key Words ◽

Hydroelectric Station ◽

Freshwater Fishes ◽

Infection Prevalence ◽

Fish Farms ◽

Intensity Of Infection ◽

Colossoma Macropomum ◽

Piaractus Mesopotamicus ◽

Key Words Monogenea

Material collected from the fishes from the dams and fish farms of the Departamento Nacional de Obras contra as Secas (DNOCS) and from the tanks of the Itaipu Hydroelectric Station was examined in order to analyze the index and the infestation of Monogenea. Specimens of tambaqui (Colossoma macropomum), pacu (Piaractus mesopotamicus), pirapitinga (Piaractus brachypomus) and the hybrid tambacu (Colossoma macropomum X Piaractus mesopotamicus) were examined and five species of Monogenea were identified including: Mymarothecium viatorum Boeger, Piasecki & Sobecka, 2002, Mymarothecium boegeri Cohen & Kohn, 2005, Notozothecium euzeti Kritsky, Boeger & Jégu, 1996, Notozothecium januachensis Belmont-Jegu, Domingues & Martins, 2004 and Anacanthorus penilabiatus Boeger, Husak & Martins, 1995. Infection prevalence and intensity of infection and new data concerning Monogenea are presented. Key words: Monogenea, Parasites, Brazil, freshwater fishes.

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Integrative MicroRNAome Analysis of Skeletal Muscle of Colossoma Macropomum (Tambaqui), Piaractus Mesopotamicus (Pacu), and the Hybrid Tambacu, based on Next-generation Sequencing Data.

10.21203/rs.3.rs-51788/v1 ◽

2020 ◽

Author(s):

Bruno EA Fantinatti ◽

Erika S Perez ◽

Bruna TT Zanella ◽

Jéssica S Valente ◽

Tassiana G de Paula ◽

...

Keyword(s):

Skeletal Muscle ◽

Target Genes ◽

Good Choice ◽

Next Generation Sequencing Data ◽

Small Rna Sequencing ◽

Sequencing Data ◽

Fish Farms ◽

Colossoma Macropomum ◽

Piaractus Mesopotamicus ◽

Specific Regulation

Abstract Background: Colossoma macropomum (tambaqui) and Piaractus mesopotamicus (pacu) are good fish species for aquaculture. The tambacu, individuals originating from the induced hybridization of the female tambaqui with the male pacu, present rapid growth and robustness, characteristics which have made the tambacu a good choice for Brazilian fish farms. Here, we used small RNA sequencing to examine global miRNA expression in the genotypes pacu (PC), tambaqui (TQ), and hybrid tambacu (TC), (Juveniles, n=5 per genotype), in order to better understand the relationship between tambacu and its parental species, and also to clarify the mechanisms involved in tambacu muscle growth and maintenance based on miRNAs expression. Results: Regarding differentially expressed (DE) miRNAs between the three genotypes, we observed 8 upregulated and 7 downregulated miRNAs considering TC vs. PC; 14 miRNAs were upregulated and 10 were downregulated considering TC vs. TQ, and 15 miRNAs upregulated and 9 were downregulated considering PC vs. TQ. The majority of the miRNAs showed specific regulation for each genotype pair, and no miRNA were shared between the 3 genotype pairs, in both up- and down-regulated miRNAs. Considering only the miRNAs with validated target genes, we observed the miRNAs miR-144-3p, miR-138-5p, miR-206-3p, and miR-499-5p. GO enrichment analysis showed that the main target genes for these miRNAs were grouped in pathways related to oxygen homeostasis, blood vessel modulation, and oxidative metabolism.Conclusions: Our global miRNA analysis provided interesting DE miRNAs in the skeletal muscle of pacu, tambaqui, and the hybrid tambacu. In addition, in the hybrid tambacu, we identified some miRNAs controlling important molecular muscle markers that could be relevant for the farming maximization.

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Mollusk Shell Debris Accumulation in the Seabed Derived from Coastal Fish Farming

Journal of Marine Science and Engineering ◽

10.3390/jmse7100335 ◽

2019 ◽

Vol 7 (10) ◽

pp. 335 ◽

Cited By ~ 1

Author(s):

Pablo Sanchez-Jerez ◽

Lotte Krüger ◽

Nuria Casado-Coy ◽

Carlos Valle ◽

Carlos Sanz-Lazaro

Keyword(s):

Fish Farming ◽

Western Mediterranean ◽

Fish Farm ◽

The Other ◽

Fish Farms ◽

Debris Accumulation ◽

Zone Of Influence ◽

The One ◽

Underwater Camera

Fish farm facilities become colonized by biofouling, and in situ cleaning activities may increase the accumulation of biofouling, mostly shell-hash, on the sediment. However, there is a lack of knowledge about the effect of fish farming on this process. We evaluated the effect of fish farming on shell-hash accumulation on sediments in three fish farms in the Western Mediterranean in Spain. On the one hand, coverage of non-degraded shell on the seabed was estimated using an underwater camera attached to a frame of 1 × 1 m. On the other hand, superficial sediment samples were taken by a Van-Veen grab, and from a subsample, shell-hash was sorted at the laboratory, dried, and weighted. A significant increase of shells on sediment was detected under fish farms compared with the other treatments, with average values of 53 g kg-1, and 1.12% of cover. Shell-hash at zones close to the fish farm cages (Zone of Influence located between 40 to 60 m from the closest cage) did not show statistical differences compared to the reference zones, 300–500 m away from the concession limits, but the shell cover showed statistical differences. Fish farming activities produce a local increase in the sedimentation rate of shells under the cages. The derived ecological consequences of this accumulation need to be further studied.

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Diversity of metazoan parasites in Colossoma macropomum (Serrasalmidae) from the lower Jari River, a tributary of the Amazonas River in Brazil

Acta Amazonica ◽

10.1590/1809-4392201704371 ◽

2018 ◽

Vol 48 (3) ◽

pp. 211-216 ◽

Cited By ~ 2

Author(s):

Bianca Barata GONÇALVES ◽

Marcos Sidney Brito OLIVEIRA ◽

William Felix BORGES ◽

Gracienhe Gomes SANTOS ◽

Marcos TAVARES-DIAS

Keyword(s):

Body Weight ◽

Species Richness ◽

Diversity Index ◽

Parasite Community ◽

Dominance Index ◽

Metazoan Parasites ◽

Colossoma Macropomum ◽

High Prevalence ◽

Random Dispersion ◽

Northern Brazil

ABSTRACT This study investigated the diversity of metazoan parasites in Colossoma macropomum from the Jari River, in the eastern Amazon, northern Brazil. We collected a total of 4966 parasites from 34 fishes, including monogeneans (Anacanthorus spathulatus, Mymarothecium boegeri, Notozothecium janauachensis and Linguadactyloides brinkmanni), nematodes (Spectatus spectatus larvae, Contracaecum sp. larvae andProcamallanus (Spirocamallanus) inopinatus), digeneans (Cladorchiidae metacercariae), acanthocephalans (Neoechinorhynchus buttnerae), crustaceans (Ergasilus turucuyus, Argulus multicolor, Perulernaea gamitanae and Braga patagonica), mites and leeches. The dominance was of monogenean species, found in the gills of the hosts. The parasites exhibited high aggregate dispersion, except Contracaecum sp. and P. (S.) inopinatus, that showed uniform and random dispersion, respectively. The species richness of parasites varied from 1 to 9, the Brillouin diversity index from 0 to 1.52, evenness from 0 to 0.63 and the Berger-Parker dominance index from 0.39 to 1.00. Abundance of parasites was not influenced by host length, but there was significant correlation with host body weight in some cases. The parasite community was characterized by low species richness and moderate diversity, with a predominance of ectoparasites with high prevalence and abundance, as well as the presence of endoparasites in the larval stage.

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Integrative microRNAome analysis of skeletal muscle of Colossoma macropomum (tambaqui), Piaractus mesopotamicus (pacu), and the hybrid tambacu, based on next-generation sequencing data

BMC Genomics ◽

10.1186/s12864-021-07513-5 ◽

2021 ◽

Vol 22 (1) ◽

Author(s):

Bruno E. A. Fantinatti ◽

Erika S. Perez ◽

Bruna T. T. Zanella ◽

Jéssica S. Valente ◽

Tassiana G. de Paula ◽

...

Keyword(s):

Skeletal Muscle ◽

Target Genes ◽

Good Choice ◽

Next Generation Sequencing Data ◽

Small Rna Sequencing ◽

Sequencing Data ◽

Fish Farms ◽

Colossoma Macropomum ◽

Piaractus Mesopotamicus ◽

Specific Regulation

Abstract Background Colossoma macropomum (tambaqui) and Piaractus mesopotamicus (pacu) are good fish species for aquaculture. The tambacu, individuals originating from the induced hybridization of the female tambaqui with the male pacu, present rapid growth and robustness, characteristics which have made the tambacu a good choice for Brazilian fish farms. Here, we used small RNA sequencing to examine global miRNA expression in the genotypes pacu (PC), tambaqui (TQ), and hybrid tambacu (TC), (Juveniles, n = 5 per genotype), to better understand the relationship between tambacu and its parental species, and also to clarify the mechanisms involved in tambacu muscle growth and maintenance based on miRNAs expression. Results Regarding differentially expressed (DE) miRNAs between the three genotypes, we observed 8 upregulated and 7 downregulated miRNAs considering TC vs. PC; 14 miRNAs were upregulated and 10 were downregulated considering TC vs. TQ, and 15 miRNAs upregulated and 9 were downregulated considering PC vs. TQ. The majority of the miRNAs showed specific regulation for each genotype pair, and no miRNA were shared between the 3 genotype pairs, in both up- and down-regulated miRNAs. Considering only the miRNAs with validated target genes, we observed the miRNAs miR-144-3p, miR-138-5p, miR-206-3p, and miR-499-5p. GO enrichment analysis showed that the main target genes for these miRNAs were grouped in pathways related to oxygen homeostasis, blood vessel modulation, and oxidative metabolism. Conclusions Our global miRNA analysis provided interesting DE miRNAs in the skeletal muscle of pacu, tambaqui, and the hybrid tambacu. In addition, in the hybrid tambacu, we identified some miRNAs controlling important molecular muscle markers that could be relevant for the farming maximization.

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Development of a Hydropower Turbine Using Seawater from a Fish Farm

Processes ◽

10.3390/pr9020266 ◽

2021 ◽

Vol 9 (2) ◽

pp. 266

Author(s):

Md Rakibuzzaman ◽

Sang-Ho Suh ◽

Hyoung-Ho Kim ◽

Youngtae Ryu ◽

Kyung Yup Kim

Keyword(s):

Power Plants ◽

Guide Vane ◽

Cross Flow ◽

Synchronous Generator ◽

Fish Farm ◽

Hydropower Plant ◽

Fish Farms ◽

Data Simulation ◽

Small Hydropower ◽

Hydropower Plants

Discharge water from fish farms is a clean, renewable, and abundant energy source that has been used to obtain renewable energy via small hydropower plants. Small hydropower plants may be installed at offshore fish farms where suitable water is obtained throughout the year. It is necessary to meet the challenges of developing small hydropower systems, including sustainability and turbine efficiency. The main objective of this study was to investigate the possibility of constructing a small hydropower plant and develop 100 kW class propeller-type turbines in a fish farm with a permanent magnet synchronous generator (PMSG). The turbine was optimized using a computer simulation, and an experiment was conducted to obtain performance data. Simulation results were then validated with experimental results. Results revealed that streamlining the designed shape of the guide vane reduced the flow separation and improved the efficiency of the turbine. Optimizing the shape of the runner vane decreased the flow rate, reducing the water power and increasing the efficiency by about 5.57%. Also, results revealed that tubular or cross-flow turbines could be suitable for use in fish farm power plants, and the generator used should be waterproofed to avoid exposure to seawater.

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Growth of the tambaqui Colossoma macropomum (Cuvier) (Characiformes: Characidae): which is the best model?

Brazilian Journal of Biology ◽

10.1590/s1519-69842005000100017 ◽

2005 ◽

Vol 65 (1) ◽

pp. 129-139 ◽

Cited By ~ 9

Author(s):

M. A. H Penna ◽

M. A Villacorta-Corrêa ◽

T. Walter ◽

M. Petrere-JR

Keyword(s):

Growth Model ◽

Negative Correlation ◽

The Other ◽

Data Sources ◽

Von Bertalanffy ◽

Data Set ◽

Colossoma Macropomum ◽

Von Bertalanffy Model ◽

Estimated Parameters ◽

Schnute Model

In order to decide which is the best growth model for the tambaqui Colossoma macropomum Cuvier, 1818, we utilized 249 and 256 length-at-age ring readings in otholiths and scales respectively, for the same sample of individuals. The Schnute model was utilized and it is concluded that the Von Bertalanffy model is the most adequate for these data, because it proved highly stable for the data set, and only slightly sensitive to the initial values of the estimated parameters. The phi' values estimated from five different data sources presented a CV = 4.78%. The numerical discrepancies between these values are of not much concern due to the high negative correlation between k and L<FONT FACE=Symbol>¥</FONT> viz, so that when one of them increases, the other decreases and the final result in phi' remains nearly unchanged.

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Feasibility of Repurposing Offshore Decommissioned Gas Rigs into Fish Farms

10.2118/205446-ms ◽

2021 ◽

Author(s):

Saptarshi Pal ◽

Chengi Kuo

Keyword(s):

North Sea ◽

Net Present Value ◽

Cost Benefit Analysis ◽

Storage System ◽

Artificial Reef ◽

Cost Benefit ◽

Fish Farm ◽

Fish Feed ◽

Offshore Platforms ◽

Fish Farms

Abstract In the past 70 years the world has relied extensively for its energy needs based on hydrocarbons produced significantly offshore. In recent years many installations with fixed platforms and pipelines are reaching the end of their useful life and are required by law to be decommissioned and removed if an approved alternative use cannot be found. This process coincides with focus on decarbonization arising from global warming and climate change. The conventional way of decommissioning is to remove the structure and take it onshore for disposal. Such an activity costs around £28 million for smaller UKCS installations in the Southern North Sea. Possible alternative solutions include their use as a research-leisure complex and artificial reef. Such an approach would have less impact on the environment and it is therefore worthwhile to explore the feasibility of repurposing these decommissioned UKCS platforms. The paper begins by highlighting the background to UKCS offshore decommissioning and farming fish life-cycle. This is followed by a critical review of the three options of total and partial removals and leave-on-site. It is found that repurposing decommissioned platforms for aquaculture farm has not been given sufficient attention and thus offers scope for a project to explore the feasibility of such a solution. Existing offshore fish farming in various countries are examined before using a decision-making matrix to select the most suitable UKCS installation for conversion and this led to using a normally unattended gas platform for the case study. The focus for this paper is on design and operation of an unattended fish farm and its cost benefit analysis. The former covers fish cage selection, capacity calculation, fish handling procedures, fish feed characteristics, feed demand, designing feed logistics and storage system. The processing facilities are layout on two decks and power needs are generated using a hybrid system of diesel and Li-ion battery. The possibility of using renewable sources by connecting to wind energy grids was also considered. For the latter capital and operating expenditure, revenue generated and maintenance costs are estimated before performing net present value prediction of the profitability of the fish farm over 10 years with for example up to 8 cages and three discount rates. The main conclusions derived are: It is technically feasible to convert a decommissioned gas platform to a fish farm and the operation can be economic. However, liability transfer implications in a repurposed offshore decommissioned gas platforms to fish farms were not established to verify the project viability. The conversion of unattended offshore gas platforms in the UKCS to an automated offshore fish farm is a novel solution which has not been implemented in the North Sea before. The work will provide an economic and environmental friendly solution to decommissioning offshore platforms and provide with a possible profitable investment.

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