Photo-induced toxicity of anthracene in the Antarctic shallow water amphipod, Gondogeneia antarctica

Gomes, Vicente; Passos, M J A C R; Leme, Neusa Maria Paes; Santos, Thaís da Cruz Alves dos; Campos, Denise; Hasue, Fabio Matsu; Phan, Van Ngan

doi:10.1007/s00300-009-0600-y

Cited by 16 publications

(12 citation statements)

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“…They are very suitable as biological material for this kind of study for a number of reasons: they are highly abundant in the subtidal zone of west Antarctica and are of great importance in coastal food webs (RICHARDSON, 1975;DUARTE;MORENO, 1981;JAZDZEWSKI et al, 2001); they can be easily collected during low tides with a hand net; they are very resistant and feed well in captivity. Our research group selected them as bioindicator organisms for biomonitoring studies after a long series of trials with a great number of species, due to their sensibility and the constancy of their responses to variations in environmental factors (GOMES et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

Metabolic rates of the antarctic amphipod Gondogeneia antarctica at different temperatures and salinities

et al. 2013

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A B S T R A C TChanges in environmental factors may deeply affect the energy budget of Antarctic organisms as many of them are stenothermal and/or stenohaline ectotherms. In this context, the aim of this study is to contribute to knowledge on variations in the energy demand of the Antarctic amphipod, Gondogeneia antarctica as a function of temperature and salinity. Experiments were held at the Brazilian Antarctic Station "Comandante Ferraz", under controlled conditions. Animals collected at Admiralty Bay were acclimated to temperatures of 0°C; 2.5°C and 5°C and to salinities of 35, 30 and 25. Thirty measurements were made for each of the nine combinations of the three temperatures and three salinities, totalling 270 measurements. Metabolic rates were assessed by oxygen consumption and total nitrogenous ammonia excretion, in sealed respirometers. When acclimated to salinities 30 or 35, metabolic rates at 0°C and 2.5°C were very similar indicating a possible mechanism of metabolic compensation for temperature. At 5.0°C, however, metabolic rates were always higher. Lower salinities enhanced the effects of temperature on metabolism and ammonia excretion rates. The physiological adaptations of individuals of G. antarctica suggest adaptive mechanisms for energy saving, adjusted to an environment with stable conditions of temperature and salinity. Little is known about the joint effects of salinity and temperature and this study is an important contribution to the understanding of the mechanism of polar organisms in their adaptation to both factors. R E S U M OAlterações ambientais podem modificar a alocação de energia dos organismos, principalmente dos ectotermos estenotérmicos e/ou estenohalinos. Nesse contexto, este trabalho contribui com o conhecimento da demanda de energia do anfípode antártico Gondogeneia antarctica em função da temperatura e da salinidade. Experimentos foram realizados na Estação Antártica Brasileira "Comandante Ferraz", em condições laboratoriais controladas. Animais coletados na Baía do Almirantado foram aclimatados a temperaturas de 0°C; 2.5°C e 5°C e salinidades de 35, 30 and 25. Foram realizadas trinta medições para cada uma das nove combinações das três temperaturas com as três salinidades, totalizando 270 medições. As taxas metabólicas foram estimadas por meio do consumo de oxigênio e excreção de amônia, em câmaras respirométricas seladas. Quando aclimatados a salinidades 30 ou 35, as taxas metabólicas a 0°C e 2.5°C foram semelhantes indicando possível mecanismo de compensação térmica, nessa faixa de variação dos fatores. A 5.0°C, no entanto, as taxas metabólicas foram sempre mais elevadas. Baixas salinidades potencializaram os efeitos da temperatura no consumo de oxigênio e na excreção de produtos nitrogenados. Os resultados estão relacionados a mecanismos adaptativos para economia de energia em indivíduos G. antarctica, ajustados a um ambiente que tem condições estáveis de temperatura e de salinidade. Pouco se sabe sobre os efeitos conjugados da salinidade e temperatura nos organismos e...

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Section: Introductionmentioning

confidence: 99%

Metabolic rates of the antarctic amphipod Gondogeneia antarctica at different temperatures and salinities

et al. 2013

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“…After exposure to ANT (12 µg.L -1 ) in the dark for 24 h, 144 h of depuration were necessary for Lepomis macrochirus to survive the subsequent period of exposure to UVR (BOWLING et al, 1983). Amphipods exposed to 16 µg.L -1 for 24 h survived 23 days in contact with UVR after 120 h of depuration (GOMES et al, 2009). The high DIs in the group of fish maintained for 48 h in clean seawater may be related to the biotransformation of PAHs into potentially genotoxic intermediates such as ROS that interact with DNA promoting strand breaks in this molecule (VANZELLA et al, 2007).…”

Section: Discussionmentioning

confidence: 99%

Assessment of genotoxicity and depuration of anthracene in the juvenile coastal fish Trachinotus carolinus using the comet assay

et al. 2013

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A B S T R A C TIn the environment, anthracene is characterized as being persistent, bioaccumulative and toxic to aquatic organisms. Biotransformation of xenobiotic substances, such as anthracene, produces reactive oxygen species that may induce DNA strand breaks. The aim of the present study was to evaluate the DNA damage in juvenile T. carolinus exposed to different concentrations (8, 16 and 32 µg.L -1 ) of anthracene for 24 h in the dark then subsequently allowed to depurate in clean water for different periods of time (48, 96 or 144 h) using the comet assay. Our results show that anthracene is genotoxic to T. carolinus and that DNA damage was dose-and depuration/time-dependent. Anthracene genotoxicity was observed in all experimental concentrations. Depuration seemed to be more efficient in fish exposed to the lowest anthracene concentration and maintained in clean water for 96 h. R E S U M OAmbientalmente, o antraceno é considerado persistente, bioacumulativo e tóxico para organismos aquáticos. A biotransformação de substâncias xenobióticas, como o antraceno, produz espécies reativas de oxigênio que podem agir sobre o DNA. O objetivo deste trabalho foi avaliar o dano ao DNA em T. carolinus expostos a diferentes concentrações de antraceno (8, 16 e 32 µg.L -1 ) por 24 h no escuro e subsequentemente mantidos em água limpa para depuração por três diferentes períodos de tempo (48, 96 e 144 h) através de ensaio cometa. Os resultados obtidos demonstram que o antraceno é genotóxico para T. carolinus e o dano ao DNA foi dose-e tempo de depuração-dependente. A genotoxicidade do antraceno foi detectada nas três concentrações utilizadas. A depuração pareceu ser mais eficiente nos peixes expostos a menor concentração de antraceno e mantidos por 96 h em água limpa.

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“…Environmental monitoring of Antarctic regions occupied by signatory countries is an objective of the Antarctic Treatise (Santos et al, 2006;Phan et al, 2007;Gomes et al, 2009Gomes et al, , 2012. The Brazilian Antarctic Program has studied methods for environmental monitoring that assesses and mitigates impacts caused by the human presence to the environment and to the organisms that inhabit it (Martins et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

Biomonitoring of Genotoxicity of Shallow Waters Around the Brazilian Antarctic Station Comandante Ferraz (Eacf), Admiralty Bay, King George Island, Antarctica, Using Amphipod Crustaceans

Gomes¹,

Rocha²,

Passos³

et al. 2015

INCT-APA Annual Activity Report

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The comet assay was applied to the biomonitoring of genotoxicity in shallow waters around the Brazilian Antarctic Station "Comandante Ferraz" (EACF). Mean values of DNA damage to animals captured from shallow waters nearby the Fuel Tanks (FT) and Sewage Treatment Outflow (STO) were significantly higher than the values of the controls captured from shallow waters of Punta Plaza (PPL) and Yellow Point (YP), naturally undisturbed places far from the EACF.

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Photo-induced toxicity of anthracene in the Antarctic shallow water amphipod, Gondogeneia antarctica

Cited by 16 publications

References 65 publications

Metabolic rates of the antarctic amphipod Gondogeneia antarctica at different temperatures and salinities

Metabolic rates of the antarctic amphipod Gondogeneia antarctica at different temperatures and salinities

Assessment of genotoxicity and depuration of anthracene in the juvenile coastal fish Trachinotus carolinus using the comet assay

Biomonitoring of Genotoxicity of Shallow Waters Around the Brazilian Antarctic Station Comandante Ferraz (Eacf), Admiralty Bay, King George Island, Antarctica, Using Amphipod Crustaceans

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