Extreme climate scenario and parasitism affect the Amazonian fish Colossoma macropomum

Costa, Jaqueline Custódio da; Val, Adalberto Luís

doi:10.1016/j.scitotenv.2020.138628

Cited by 21 publications

(22 citation statements)

References 47 publications

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“…Ishimatsu et al (2008) concluded that high pCO 2 decreased the total protein in blood of Antartic fish ( Pachycara brachycephalum ) when exposed to elevated pCO 2 1600 µatm. High total protein may suggest that the immune system of fish is improving (da Costa & Val, 2020).…”

Section: Discussionmentioning

confidence: 99%

Welfare of scaleless fish, Sagor catfish ( Hexanematichthys sagor ) juveniles under different carbon dioxide concentrations

Noor

Cob

et al. 2021

Aquaculture Research

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Increased acidification has shown to bring negative impacts on marine fish. Currently, fish with scales have been extensively investigated, whereas a few systematic studies have been carried out for investigating impacts of acidified environment towards the growth of scaleless fish. Thus, this research aimed to evaluate carbon dioxide, CO2‐induced acidification impacts towards the welfare (growth with health) of the commercially aquaculture scaleless fish, Sagor catfish (Hexanematichthys sagor) for 20 weeks. Fish specimens were exposed to control pCO2 (400 µatm), mild pCO2 (550 µatm) and high pCO2 (900 µatm). Growth were measured by feed conversion ratio (FCR) plus specific growth rate (SGR). The outcomes indicated that the significantly lowest SGR was flaunted in high pCO2 group supported with the significantly highest FCR indicating poor growth. Health parameters significantly showed the highest value of red blood cell, haematocrit, haemoglobin, white blood cell, thrombocyte, mean corpuscular volume and haemoglobin in control group while urea, cholesterol, aspartate aminotransferase, alanine aminotransferase, alkaline phosphatase, lactate dehydrogenase, serum cortisol plus glucose were significantly the lowest in control pCO2 with regard to mild and high pCO2 group. These findings can serve as important baseline data in formulating managements regarding the specific effects of acidification on scaleless fish.

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Section: Discussionmentioning

confidence: 99%

Welfare of scaleless fish, Sagor catfish ( Hexanematichthys sagor ) juveniles under different carbon dioxide concentrations

Noor

Cob

et al. 2021

Aquaculture Research

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“…The oxidative stress appears to play a major role in the pathogenesis and progression of many infectious diseases 18 . In our preliminary study 16 , we observed that the degree of parasitism by Monogenea in tambaqui ( Colossoma macropomum ), a highly commercialized species in the Amazon region, is differentially affected by the climate change scenario; fish kept in the extreme climate scenario show a significant increase in the level of parasitism, which is accompanied by an inflammatory response, as well as by overexpression of pro-inflammatory cytokines such as IL-1β and negative regulation of anti-inflammatory cytokine such as IL-10 . Taken together, the data suggest that the activation of inflammatory mechanisms seems to be an adaptive response of the species to try to deal with the increase in parasitism imposed by climate change, which evidences a key role of the genes that regulate inflammation.…”

Section: Introductionmentioning

confidence: 87%

“…Similar to several fish species cultivated worldwide, tambaqui are highly affected by monogenean infections and thus constitutes a good biological model for evaluating environment-parasite-host interaction. We previously demonstrated that climate change will favor the proliferation of monogeneans, especially in less-parasitized tambaqui, and promotes the activation of inflammatory mechanisms 16 . These results motivated us to perform this second study.…”

Section: Introductionmentioning

confidence: 99%

Climate change affects the parasitism rate and impairs the regulation of genes related to oxidative stress and ionoregulation of Colossoma macropomum

Costa

Souza

Castro

et al. 2021

Sci Rep

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Global climate change represents a critical threat to the environment since it influences organismic interactions, such as the host-parasite systems, mainly in ectotherms including fishes. Rising temperature and CO2 are predicted to affect this interaction other and critical physiological processes in fish. Herein, we investigated the effects of different periods of exposure to climate change scenarios and to two degrees of parasitism by monogeneans in the host-parasite interaction, as well as the antioxidant and ionoregulatory responses of tambaqui (Colossoma macropomum), an important species in South American fishing and aquaculture. We hypothesized that temperature and CO2 changes in combination with parasite infection would interfere with the host’s physiological processes that are related to oxidative stress and ionoregulation. We experimentally exposed C. macropomum to low and high levels of parasitism in the current and extreme climate scenarios (4.5 °C and 900 ppm CO2 above current levels) for periods of seven and thirty days and we use as analyzed factors; the exposure time, the climate scenario and parasitism level in a 2 × 2 × 2 factorial through a three-way ANOVA as being fish the experimental unit (n = 8). An analysis of gill enzymatic and gene expression profile was performed to assess physiological (SOD, GPx and Na+/K+-ATPase enzymes) and molecular (Nrf2, SOD1, HIF-1α and NKA α1a genes) responses. A clear difference in the parasitism levels of individuals exposed to the extreme climate scenario was observed with a rapid and aggressive increase that was higher after 7 days of exposure though showed a decrease after 30 days. The combination of exposure to the extreme climate change scenario and parasitism caused oxidative stress and osmoregulatory disturbance, which was observed through the analysis of gene expression (Nrf2, SOD1, HIF-1α and NKA α1a) and antioxidant and ionoregulatory enzymes (SOD, GPx and Na+/K+-ATPase) on the host, possibly linked to inflammatory processes caused by the high degree of parasitism. In the coming years, these conditions may result in losses of performance for this species, and as such will represent ecological damage and economical losses, and result in a possible vulnerability in relation to food security.

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“…O uso de aeradores como inovação tecnológica tem sido indicado por vários autores para garantir a sobrevivência financeira dos cultivos de tambaqui na Amazônia (COSTA et al2017;COSTA et al 2020;IZEL et al, 2013;, assim como a implantação do programa de melhoramento genético dos planteis e a possibilidade de uso de populações monosexos (feminização) para se tornar a atividade mais atrativa (ALMEIDA et al, 2016; REIS e ALMEIDA, 2018).…”

Section: Criação Em Viveiros Escavadosunclassified

Utilização De Alimentadores De Auto-Demanda: Uma Revisão E Potencial Uso Para Peixes Amazônicos

Mattos¹,

Saboia²,

Filho³

et al. 2021

Aquicultura Na Amazônia: Estudos Técnico-Científicos E Difusão De Tecnologias

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Direitos para esta edição cedidos à Atena Editora pelos autores. Todo o conteúdo deste livro está licenciado sob uma Licença de Atribuição Creative Commons. Atribuição-Não-Comercial-NãoDerivativos 4.0 Internacional (CC BY-NC-ND 4.0). O conteúdo dos artigos e seus dados em sua forma, correção e confiabilidade são de responsabilidade exclusiva dos autores, inclusive não representam necessariamente a posição oficial da Atena Editora. Permitido o download da obra e o compartilhamento desde que sejam atribuídos créditos aos autores, mas sem a possibilidade de alterá-la de nenhuma forma ou utilizá-la para fins comerciais. Todos os manuscritos foram previamente submetidos à avaliação cega pelos pares, membros do Conselho Editorial desta Editora, tendo sido aprovados para a publicação com base em critérios de neutralidade e imparcialidade acadêmica. A Atena Editora é comprometida em garantir a integridade editorial em todas as etapas do processo de publicação, evitando plágio, dados ou resultados fraudulentos e impedindo que interesses financeiros comprometam os padrões éticos da publicação. Situações suspeitas de má conduta científica serão investigadas sob o mais alto padrão de rigor acadêmico e ético.

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Extreme climate scenario and parasitism affect the Amazonian fish Colossoma macropomum

Cited by 21 publications

References 47 publications

Welfare of scaleless fish, Sagor catfish ( Hexanematichthys sagor ) juveniles under different carbon dioxide concentrations

Welfare of scaleless fish, Sagor catfish ( Hexanematichthys sagor ) juveniles under different carbon dioxide concentrations

Climate change affects the parasitism rate and impairs the regulation of genes related to oxidative stress and ionoregulation of Colossoma macropomum

Utilização De Alimentadores De Auto-Demanda: Uma Revisão E Potencial Uso Para Peixes Amazônicos

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