Determining the optimal developmental stages of Xenopus laevis for initiating exposures to chemicals for sensitively detecting their feminizing effects on gonadal differentiation

Li, Yuanyuan; Chen, Juan; Qin, Zhan-Fen

doi:10.1016/j.aquatox.2016.09.002

Cited by 14 publications

(2 citation statements)

References 53 publications

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“…Selenium is an essential micronutrient to all vertebrates but is toxic at higher concentrations and aquatic organisms are particularly vulnerable (Janz et al , 2010). Exposure to elevated selenium levels has been shown to result in developmental abnormalities and skeletal deformities in multiple fish species (Holm et al , 2005; Shi et al , 2018; Kupsco and Schlenk, 2016). Agricultural runoff over seleniferous soils and water discharge from industrial operations are the main sources of excessive selenium inputs in the SFBD (Lemly, 2004).…”

Section: Discussionmentioning

confidence: 99%

Integrating physiological data with the conservation and management of fishes: a meta-analytical review using the threatened green sturgeon (Acipenser medirostris)

Rodgers

Poletto

Isaza

et al. 2019

Conservation Physiology

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Reversing global declines in the abundance and diversity of fishes is dependent on science-based conservation solutions. A wealth of data exist on the ecophysiological constraints of many fishes, but much of this information is underutilized in recovery plans due to a lack of synthesis. Here, we used the imperiled green sturgeon (Acipenser medirostris) as an example of how a quantitative synthesis of physiological data can inform conservation plans, identify knowledge gaps and direct future research actions. We reviewed and extracted metadata from peer-reviewed papers on green sturgeon. A total of 105 publications were identified, spanning multiple disciplines, with the primary focus being conservation physiology (23.8%). A meta-analytical approach was chosen to summarize the mean effects of prominent stressors (elevated temperatures, salinity, low food availability and contaminants) on several physiological traits (growth, thermal tolerance, swimming performance and heat shock protein expression). All examined stressors significantly impaired green sturgeon growth, and additional stressor-specific costs were documented. These findings were then used to suggest several management actions, such as mitigating salt intrusion in nursery habitats and maintaining water temperatures within optimal ranges during peak spawning periods. Key data gaps were also identified; research efforts have been biased towards juvenile (38.1%) and adult (35.2%) life-history stages, and less data are available for early life-history stages (embryonic, 11.4%; yolk-sac larvae, 12.4%; and post yolk-sac larvae, 16.2%). Similarly, most data were collected from single-stressor studies (91.4%) and there is an urgent need to understand interactions among stressors as anthropogenic change is multi-variate and dynamic. Collectively, these findings provide an example of how meta-analytic reviews are a powerful tool to inform management actions, with the end goal of maximizing conservation gains from research efforts.

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Section: Discussionmentioning

confidence: 99%

Integrating physiological data with the conservation and management of fishes: a meta-analytical review using the threatened green sturgeon (Acipenser medirostris)

Rodgers

Poletto

Isaza

et al. 2019

Conservation Physiology

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show abstract

“…(WEN et al, 2018;WU et al, 2017;CUNHA et al, 2017;NIE et al, 2015). Esses novos microcontaminantes podem causar efeitos adversos em ecossistemas aquáticos, principalmente em espécies sensíveis, como peixes e anfíbios (LIU et al, 2018;NEGINTAJI et al, 2018;PORSERYD et al, 2017;VALCARCE et al, 2017;ABDEL-KHALEK, 2018;CUNHA et al, 2016;QIN, 2016;TAMSCHICK et al, 2016;GILBERT, 2012). As amostras ambientais são em sua maioria complexas e as substâncias de interesse estão normalmente em concentrações na ordem de μg.L -1 e ng.L -1 , tornando necessário o desenvolvimento de técnicas eficientes de análise (GLINEUR et al, 2018;CHORMEY et al, 2017;FERRERA;SANTANA;RODRÍGUEZ, 2013;GE et al, 2010).…”

Section: Introductionunclassified

Atividade estrogênica de desreguladores endócrinos em águas superficiais do município de Santa Maria Madalena, Sudeste do Brasil

Cunha

Muylaert²,

Nascimento

et al. 2021

Eng. Sanit. Ambient.

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RESUMO Nas últimas décadas se intensificou o lançamento, no meio hídrico, de contaminantes com capacidade de desregulação endócrina. Nesse contexto, a aplicação e o aprimoramento de métodos analíticos eficientes passam a ser cada vez mais requeridos para verificar os potenciais impactos dessas substâncias sobre os organismos a elas expostos. Bioensaios podem ser conduzidos para esse fim, como, por exemplo, o ensaio in vitro yeast estrogen screen (YES), que permite a detecção de compostos estrogênicos e citotóxicos. Este estudo, aplicando tal ensaio, investigou a atividade estrogênica das águas e seus potenciais riscos à biota aquática de dois corpos hídricos do município de Santa Maria Madalena, no estado do Rio de Janeiro, Sudeste do Brasil. Observou-se atividade estrogênica apenas no córrego São Domingos, com concentrações de equivalente estradiol (EQ-E2) de 23 e 10.4 ng.L−1 no período de estiagem e chuvoso, respectivamente. Os potenciais riscos desse nível de atividade estrogênica foram mensurados por meio de uma avaliação de risco, que revelou alto e médio risco nas estações seca e chuvosa, respectivamente. Cabe mencionar que, entre os corpos hídricos estudados, a área do córrego São Domingos é aquela com maior adensamento populacional e menor cobertura de coleta e tratamento de esgotos. O ensaio YES mostrou ser uma boa ferramenta para a detecção da presença de desreguladores endócrinos estrogênicos, que pode subsidiar o avanço do conhecimento de corpos hídricos e a formulação de legislação e regulamentações da área ambiental.

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Effects of the biocide methylisothiazolinone on Xenopus laevis wound healing and tail regeneration

et al. 2016

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Determining the optimal developmental stages of Xenopus laevis for initiating exposures to chemicals for sensitively detecting their feminizing effects on gonadal differentiation

Cited by 14 publications

References 53 publications

Integrating physiological data with the conservation and management of fishes: a meta-analytical review using the threatened green sturgeon (Acipenser medirostris)

Integrating physiological data with the conservation and management of fishes: a meta-analytical review using the threatened green sturgeon (Acipenser medirostris)

Atividade estrogênica de desreguladores endócrinos em águas superficiais do município de Santa Maria Madalena, Sudeste do Brasil

Effects of the biocide methylisothiazolinone on Xenopus laevis wound healing and tail regeneration

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