Phototactic behavior in Daphnia magna Straus as an indicator of toxicants in the aquatic environment

Martins, José; Soares, Marcello; Saker, Martin L.; Oliva-Teles, Luís; Vasconcelos, Vı́tor

doi:10.1016/j.ecoenv.2006.11.003

Cited by 34 publications

(41 citation statements)

References 12 publications

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“…The experimental volume was intentionally set at a small scale to presumably minimize physico-chemical differences across the water column. Nevertheless, our experiment was within the volume range used in many previous studies addressing zooplankton behaviors and phytoplankton-zooplankton interactions (Martins et al 2007;Ren et al 2009;Artells et al 2013).…”

Section: Experimental Designmentioning

confidence: 99%

The effect of habitat orientation on grazing rate of Ceriodaphnia quadrangula: a microcosm study

Sun¹,

Pan²

2016

fal

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Although the effects of habitat size and shape on ecological processes have been well studied, the importance of habitat orientation (i.e., the geometrical feature of habitat placement that describes how a habitat is placed in space) has been largely overlooked for decades. Here, we varied the orientation of cuboid chambers (with correspondingly small, medium and large sides as the chamber base) in a microcosm experiment involving a phytoplankton-zooplankton (Chlorella pyrenoidosa-Ceriodaphnia quadrangula) system at two volume scales (64 mL and 512 mL) to determine the effect of habitat orientation on the swimming activity and grazing rate of C. quadrangula. At a given chamber volume, the grazers spent more time in swimming vertically and swam slower (particularly in the horizontal direction) in the tall (small-based) chamber compared with the short (large-based) ones. Moreover, grazing rates of C. quadrangula were significantly lower in the tall chambers than short ones regardless of experimental time, consistent with the positive relationship between average swimming velocity and grazing rate. Our data indicate that habitat orientation may affect animal activity and foraging success, and we therefore suggest that habitat orientation deserves much more attention in future studies.

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Section: Experimental Designmentioning

confidence: 99%

The effect of habitat orientation on grazing rate of Ceriodaphnia quadrangula: a microcosm study

Sun¹,

Pan²

2016

fal

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“…A bioatividade destes corantes também pode, em alguns casos, agregar valores aos produtos por apresentaram, por exemplo, atividades anti-inflamatórias, antimicróbicas, antioxidantes e anticânceres (KITTAKOOP et al, 1999;XIAO;ZHONG, 2007;KUWAHARA et al, 2009;ZHOU et al, 2012;ANANTHARAMAN et al, 2014;SILVA et al, 2014 (CROSS et al, 1972;KITTAKOOP et al, 1999;UNAGUL et al, 2005;PRATHUMPAI et al, 2007), e possui bioatividade antimalárica e antioxidante (KITTAKOOP et al, 1999); entretanto, dados toxicológicos e ecotoxicológicos são escassos ou inexistentes. (MARTINS et al, 2007;SCHOLZ et al, 2008;SCHOLZ et al, 2013).…”

Section: Corantes Sintéticos E Naturaisunclassified

“…Diversos estudos ecotoxicológicos realizados em daphnídeos aplicam avaliações de imobilidade, reprodução, comportamento e análises fisiológicas (MARTINS et al, 2007;REN et al, 2009;PESTANA et al, 2010;NOSS et al, 2013;OKAMOTO et al, 2014;BARATA et al, 2016). A seguir, apresentaremos brevemente os ensaios selecionados para a realização deste trabalho.…”

Section: Biomarcadores Bioquímicosunclassified

“…Condições ambientais desfavoráveis podem causar um declínio nos custos metabólicos de daphnídeos, analisados pela quantificação da taxa respiratória dos organismos (MICHELS et al, 2000;MARTINS et al, 2007;REN et al, 2009;BAHRNDORFF et al, 2015;HANSEN;ROSLEV, 2016;HÄDER;ERZINGER, 2017). Estas alterações no consumo de oxigênio são associadas a alterações na alocação energética que causam prejuízo a outras funções fisiológicas, como crescimento, reprodução e desenvolvimento (CHOPELET et al, 2008;PESTANA et al, 2010;PESTANA et al, 2013;BARATA et al, 2016).…”

Section: Biomarcadores De Custo Metabólico E Comportamentounclassified

“…Também são verificados desvios no característico padrão de natação, na fototaxia e na busca por alimentos (MICHELS et al, 2000;MARTINS et al, 2007;REN et al, 2009;BAHRNDORFF et al, 2015;HANSEN;ROSLEV, 2016;HÄDER;ERZINGER, 2017). A fototaxia extremamente positiva da D. magna é modulada por fatores como escassez de alimento, presença de pistas químicas de predadores e xenobióticos (MICHELS et al, 2000;BURKS et al, 2002;PESTANA et al, 2010), e esta resposta facilita a detecção de estresses induzidos por xenobióticos.…”

Section: Biomarcadores De Custo Metabólico E Comportamentounclassified

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Aquatic monitoring is an essential part of battling the rising ecological crisis. Classical methods involving extensive sampling and sensor measurements are precise, however, time and money consuming. For these reasons, they are unsuitable for long-term continuous data collection. With the increasing water pollution, there is a need to monitor the environment in new, more efficient ways over a long period of time. Project Robocoenosis introduces a novel concept of autonomous, long-term aquatic monitoring with the use of biohybrids. By linking technological parts with living organisms, a more well-balanced information on the state of the environment can be obtained. This will be done by using organisms such as mussels and Daphnia as live biosensors and combining them with low-power robotics. The autonomous biohybrid entity will use Microbial Fuel Cells (MFC) as a natural power source through electricity harvesting. The fields of operation are focused on various Austrian lakes including the lakes Lake Hallstatt and Lake Millstatt in the Alpine Region as well as Lake Neusiedler.

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Phototactic behavior in Daphnia magna Straus as an indicator of toxicants in the aquatic environment

Cited by 34 publications

References 12 publications

The effect of habitat orientation on grazing rate of Ceriodaphnia quadrangula: a microcosm study

The effect of habitat orientation on grazing rate of Ceriodaphnia quadrangula: a microcosm study

Avaliação ecogenotoxicológica de corante natural extraído de micro-organismo

The Use of Robots in Aquatic Biomonitoring with Special Focus on Biohybrid Entities

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