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首页> 外文期刊>ICES Journal of Marine Science >Determining the safety range of electrical pulses for two benthic invertebrates: brown shrimp (Crangon crangon L.) and ragworm (Alitta virens S.)
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Determining the safety range of electrical pulses for two benthic invertebrates: brown shrimp (Crangon crangon L.) and ragworm (Alitta virens S.)

机译：确定两种底栖无脊椎动物的电脉冲的安全范围：棕色虾（Crangon crangon L.）和虫（Alitta virens S.）

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摘要

Pulse trawling is currently the most promising alternative for conventional beam trawls targeting sole and shrimp, meeting both the fisher's aspirations and the need for more environmentally friendly fishing techniques. Before electrotrawling can be further developed and implemented on a wider scale, however, more information is needed about the effects of electrical pulses on marine organisms. The organisms used in the present experiments were brown shrimp (Crangon crangon L.) and king ragworm (Alita virens S.) as model species for crustaceans and polychaetes, respectively. These animals were exposed to a homogeneously distributed electrical field with varying values of the following parameters: frequency (5 -200 Hz), electrical field strength (150 - 200 V m~(-1)), pulse polarity, pulse shape, pulse duration (0.25 -1 ms), and exposure time (1 - 5 s). The goal of this study was to determine the range of safe pulses and thereby also to evaluate the effect of the pulses already being used on commercial electro-trawls. Behaviour during and shortly after exposure, 14-d mortality rates, and gross and histological examination were used to evaluate possible effects. The vast majority of shrimp demonstrated a tail flip response when exposed to electric pulses depending on the frequency, whereas ragworm demonstrated a squirming reaction, independent of the frequency. No significant increase in mortality or injuries was encountered for either species within the range of pulse parameters tested. Examination of the hepatopancreas of shrimp exposed to 200 V m~(-1) revealed a significantly higher severity of an intranuclear baculoform virus infection. These data reveal a lack of irreversible lesions in ragworm and shrimp as a direct consequence of exposure to electric pulses administered in the laboratory. Despite these promising results, other indirect effects cannot be ruled out and further research hence is warranted.
机译：脉冲拖网捕捞目前是针对底和虾的传统拖网拖网的最有前途的替代方案，既满足了渔民的愿望，又满足了对更环保的捕鱼技术的需求。然而，在进一步发展和大规模实施电拖网捕捞之前，需要更多有关电脉冲对海洋生物的影响的信息。在本实验中使用的生物分别是作为甲壳类和多毛类动物的模型物种的棕色虾（Crangon crangon L.）和国王虫（Alita virens S.）。将这些动物暴露于具有以下参数值变化的均匀分布的电场中：频率（5 -200 Hz），电场强度（150-200 V m〜（-1）），脉冲极性，脉冲形状，脉冲持续时间（0.25 -1毫秒）和曝光时间（1-5 s）。这项研究的目的是确定安全脉冲的范围，从而评估已经用于商用电拖网的脉冲的影响。暴露期间和暴露后不久的行为，14 d死亡率以及肉眼和组织学检查均用于评估可能的影响。当暴露于电脉冲时，绝大多数虾表现出甩尾反应，具体取决于频率，而，虫表现出蠕动反应，而与频率无关。在所测试的脉冲参数范围内，两种物种的死亡率或伤害均未显着增加。对虾暴露于200 V m〜（-1）的肝胰脏进行检查，发现其核内杆状病毒感染的严重性明显更高。这些数据表明，由于暴露于实验室中施加的电脉冲的直接结果是，虫和虾中缺乏不可逆的病变。尽管取得了这些令人鼓舞的结果，但不能排除其他间接影响，因此有必要进行进一步的研究。

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  • 来源
    《ICES Journal of Marine Science》 |2015年第3期|973-980|共8页
  • 作者

    Maarten Soetaert; Koen Chiers; Luc Duchateau; Hans Polet; Bart Verschueren; Annemie Decostere;

  • 作者单位

    Department of Pathology, Bacteriology and Poultry Diseases, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, Merelbeke B-9820, Belgium,Department of Morphology, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, Merelbeke B-9820, Belgium;

    Department of Pathology, Bacteriology and Poultry Diseases, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, Merelbeke B-9820, Belgium;

    Department of Comparative Physiology and Biometry, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, Merelbeke B-9820, Belgium;

    Institute for Agricultural and Fisheries Research (ILVO), Animal Sciences - Fisheries, Ankerstraat 1, Oostende B-8400, Belgium;

    Institute for Agricultural and Fisheries Research (ILVO), Animal Sciences - Fisheries, Ankerstraat 1, Oostende B-8400, Belgium;

    Department of Morphology, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, Merelbeke B-9820, Belgium;

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  • 正文语种 eng
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  • 关键词

    benthic invertebrates; effects; electrical pulses; electrotrawling; histology; injuries; pulse trawling; survival;

    机译：底栖无脊椎动物;效果;电脉冲电拖网;组织学伤害;脉冲拖网生存;

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