Pro-Inflammatory Cytokines in the Serum of Silver Catfish (<i>Rhamdia quelen</i>) Naturally Infected by<i>Clinostomum complanatum</i>: A Preliminary Study

Lima, Horácio Luis de; Stefani, Lenita M.; Pedron, Fabrício de Araújo; Baldissera, Matheus D.; Silva, Aleksandro S. Da

doi:10.1645/13-300.1

Cited by 12 publications

(3 citation statements)

References 8 publications

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“…Studies in several species of fish including rainbow trout, Oncorhynchus mykiss ; turbot, Psetta maxima ; goldfish, Carassius auratus ; and catfish, Bagre bagre , have shown that TNF‐α is an important macrophage activator considered to be a proxy indicator of innate immunological competence in both adults and larvae (Zou et al ; Lam et al ; De Lima et al ; Muñoz et al ). The assessment of TNF‐α concentration showed that larvae fed EE‐enriched nauplii had 929.3 ± 291.3 fg/mg, while the control larvae had 647.5 ± 303.4 fg/mg; however, the difference was nonsignificant because of the high dispersion of responses (Table ).…”

Section: Resultsmentioning

confidence: 99%

Survival and Growth Improvement of Palm Ruff, Seriolella violacea, Larvae Fed Artemia Nauplii Enriched with an Experimental Emulsion

González

Silva²,

Gajardo

et al. 2016

J World Aquaculture Soc

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The palm ruff, Seriolella violacea (Cojinoba), is a potential new species for Chilean aquaculture. To approach Cojinoba larviculture, an experimental Artemia enrichment emulsion, containing docosahexaenoic acid (DHA)/eicosapentaenoic acid (EPA) = 2.5, supplemented with vitamin E, astaxanthin, and β‐glucan, was evaluated in both Artemia and Cojinoba larvae, 30–50 d.a.h. This study tested an experimental enrichment emulsion versus a commercial emulsion, with an integral approach of multicompound emulsions. After 23 h enrichment, experimental emulsion (EE)‐enriched nauplii reached DHA and EPA concentrations of 23.8 and 18.7 mg/g dry weight (dwt), respectively, while in Cojinoba larvae they were 18.4 and 19.7 mg/g dwt. Control emulsion (CE)‐enriched nauplii exhibited lower DHA and EPA (6.1 and 7.7 mg/g dwt), while only DHA decreased in the control larvae (12.6 mg/g dwt). Vitamin E was higher in EE‐enriched nauplii (29.2 mg/100 g dwt) than in the control (8.4 mg/100 g dwt). Larvae fed EE‐enriched Artemia exhibited 8% increase in survival and 19% in growth compared with the control. Astaxanthin was detected only in larvae fed EE‐enriched nauplii. The tumor necrosis factor‐α concentration was not significantly different between larvae fed EE‐ and CE‐enriched nauplii. EE looks promising as an Artemia enrichment and experimental diet to assess palm ruff larval requirements, and has a positive impact on fish larvae performance.

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Section: Resultsmentioning

confidence: 99%

Survival and Growth Improvement of Palm Ruff, Seriolella violacea, Larvae Fed Artemia Nauplii Enriched with an Experimental Emulsion

González

Silva²,

Gajardo

et al. 2016

J World Aquaculture Soc

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“…In fish, inflammation is an important immune defense mechanism in response to tissue damage and infection [ 35 ]. Tissue damage and infection induce the activation and release of proinflammatory cytokines, such as IL-1β , IL-2 , IL-8, and TNF-α , which mediate the onset of innate immune response [ 36 , 37 ]. In this study, the mRNA expression levels of IL-1β , IL-2 , IL-8, and TNF-α were significantly upregulated in fish fed a diet containing 251.8 g/kg carbohydrate level.…”

Section: Discussionmentioning

confidence: 99%

Effects of Dietary Carbohydrate Levels on Growth Performance, Body Composition, Antioxidant Capacity, Immunity, and Liver Morphology in Oncorhynchus mykiss under Cage Culture with Flowing Freshwater

Zhao

Wei

Wang

et al. 2022

Aquaculture Nutrition

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The purpose of this study is to investigate the effects of dietary carbohydrate levels on growth performance, body composition, antioxidant capacity, immunity, and liver morphology in Oncorhynchus mykiss under cage culture with flowing freshwater. Fish (initial body weight 25.70 ± 0.24 g) were fed five isonitrogenous (420 g/kg protein) and isolipidic (150 g/kg lipid) diets containing 50.6, 102.1, 151.3, 200.9 and 251.8 g/kg carbohydrate levels, respectively. The results indicated that fish fed diets containing 50.6-200.9 g/kg carbohydrate showed significantly higher growth performance, feed utilization, and feed intake than those fed 251.8 g/kg dietary carbohydrate levels. Based on the analysis of the quadratic regression equation for weight gain rate, the appropriate dietary carbohydrate requirement of O. mykiss was estimated to be 126.2 g/kg. 251.8 g/kg carbohydrate level activated Nrf2-ARE signaling pathway, suppressed superoxide dismutase activity and total antioxidant capacity, and increased MDA content in the liver. Besides, fish fed a diet containing 251.8 g/kg carbohydrate showed a certain degree of hepatic sinus congestion and dilatation in the liver. Dietary 251.8 g/kg carbohydrate upregulated the mRNA transcription level of proinflammatory cytokines and downregulated the mRNA transcription level of lysozyme and complement 3. Whole-body compositions were not affected by dietary carbohydrate levels. In conclusion, 251.8 g/kg carbohydrate level suppressed the growth performance, antioxidant capacity and innate immunity, resulting in liver injury and inflammatory response of O. mykiss. A diet containing more than 200.9 g/kg carbohydrate is not efficiently utilized by O. mykiss under cage culture with flowing freshwater.

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“…The mean larval fluke size was, however, still lower, although the parasites were recovered from larger fish collected during late autumn, when the metacercariae were expected to be fully developed. A high proportion of underdeveloped parasites found in the additional sampling of round gobies implied that the development of B. polymorphus larvae in round gobies was limited by an immunological [ 48 ] or physiological [ 47 ] constraint rather than simply due to smaller host size.…”

Section: Discussionmentioning

confidence: 99%

Non-native gobies facilitate the transmission of Bucephalus polymorphus (Trematoda)

et al. 2015

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BackgroundIntroduced species can modify local host-parasite dynamics by amplifying parasite infection which can ‘spill-back’ to the native fauna, whether they are competent hosts for local parasites, or by acting as parasite sinks with ‘dilution’ of infection decreasing the parasite burden of native hosts. Recently infection by the trematode Bucephalus polymorphus has increased in several European rivers, being attributed to the introduction of intermediate host species from the Ponto-Caspian region. Using a combination of field and experimental data, we evaluated the competence of non-native and native fish as intermediate hosts for B. polymorphus and its role for parasite development in a definitive host.MethodsThe density of 0+ juvenile fish (the second intermediate hosts for B. polymorphus) was measured in the River Morava, Czech Republic and fish were screened for natural metacercariae infection. The stomach contents of predatory fish that are definitive hosts of B. polymorphus were examined to assess the importance of non-native gobies for parasite transmission. In semi-natural conditions, parasite establishment, initial survival, and maturity rates in experimentally infected definitive hosts pikeperch Sander lucioperca were measured in flukes recovered from native white bream Abramis bjoerkna and non-native tubenose goby Proterorhinus semilunaris and round goby Neogobius melanostomus. Adult fluke size and egg production was also measured to evaluate the potential effect of intermediate host species on parasite fitness.ResultsWe detected high natural infection parameters of B. polymorphus in native cyprinids and non-native gobies compared to data from the period prior to goby establishment. Both fish groups are consumed by predatory fish and represent a major component of the littoral fish community. Parasite establishment and adult size in definitive hosts was equivalent among the second intermediate host species, despite a lower size of metacercariae recovered from round gobies. However, development in the definitive host of flukes recovered from gobies was reduced, showing higher mortality, delayed maturity and lower egg production, in comparison with parasites from native hosts.ConclusionsSubstantial ‘spill-back’ of B. polymorphus due to higher transmission rates after establishment of non-native gobies was partially buffered by decreased fitness of B. polymorphus that underwent development in gobies.

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Pro-Inflammatory Cytokines in the Serum of Silver Catfish (Rhamdia quelen) Naturally Infected byClinostomum complanatum: A Preliminary Study

Cited by 12 publications

References 8 publications

Survival and Growth Improvement of Palm Ruff, Seriolella violacea, Larvae Fed Artemia Nauplii Enriched with an Experimental Emulsion

Survival and Growth Improvement of Palm Ruff, Seriolella violacea, Larvae Fed Artemia Nauplii Enriched with an Experimental Emulsion

Effects of Dietary Carbohydrate Levels on Growth Performance, Body Composition, Antioxidant Capacity, Immunity, and Liver Morphology in Oncorhynchus mykiss under Cage Culture with Flowing Freshwater

Non-native gobies facilitate the transmission of Bucephalus polymorphus (Trematoda)

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