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首页> 外文期刊>Journal of Experimental Marine Biology and Ecology >Deciphering the known unknowns in the behavioural ecology of the intertidal gastropod Littorina littorea
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Deciphering the known unknowns in the behavioural ecology of the intertidal gastropod Littorina littorea

机译：解释潮间腹足纲小立陶宛的行为生态学中的已知未知数

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摘要

A considerable amount of attention has been devoted to understand the role of chemoreception in the behavioural ecology of gastropods. There is still, however, a limited amount of information related to their sensory ecology and their subsequent ability to navigate through topographically complex landscapes, such as intertidal rocky shores, despite the documented role of substrate spatial structure in the movement rates and directionality of gastropods. Responses to gravity and visual cues have been documented in a range of intertidal gastropods, but often led to contradictory conclusions. We examined the response of the gastropod Littorina littorea, a keystone grazer on most temperate intertidal ecosystems of the northern hemisphere, to substrate slope, topographic discontinuities and light using purpose-designed experimental set-ups under laboratory-controlled conditions. In contrast to previous results, we showed that L. littorea did not exhibit a strict geotactic behaviour. Instead, they were predominantly thigmotactic following an encounter with a topographic discontinuity, and we suggest that the observed seemingly negative geotactic responses are only a by-product of thigmotaxis, i.e. a thigmotactically-induced negative geotactic response. L. littorea also showed a strong preference for dark areas and shapes. Taken together, our results suggest that thigmotaxis and scototaxis are evolutionary advantageous to navigate through topographically complex and thermally stressful environments, and that the behavioural repertoire of gastropod may be much wider than previously thought.
机译：为了理解化学感受在腹足动物的行为生态学中的作用，人们投入了大量精力。然而，尽管有文献记载了底物空间结构在腹足动物的运动速度和方向性中的作用，但仍缺乏与它们的感官生态学及其随后在地形复杂地形（如潮间带岩岸）中导航有关的信息。潮间带腹足动物对重力和视觉提示的反应已有记录，但常常得出矛盾的结论。我们在实验室控制的条件下，使用了专门设计的实验装置，研究了北半球大多数温带潮间生态系统上的梯形食草动物腹足纲小食蛾对底物坡度，地形不连续性和光的响应。与以前的结果相反，我们表明L. littorea没有表现出严格的地理行为。取而代之的是，它们在遇到地形不连续性后主要是拟动力的，并且我们建议观察到的看似消极的地质反应只是拟动力的副产品，即拟动力诱发的消极地质反应。 L. littorea还表现出对深色区域和形状的强烈偏好。综上所述，我们的研究结果表明，轴心性和苏格兰性在进化过程中有利于在地形复杂且热应力环境中导航，腹足动物的行为范围可能比以前认为的要广泛得多。

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    《Journal of Experimental Marine Biology and Ecology》 |2020年第3期|151313.1-151313.8|共8页
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  • 作者单位

    Univ Lille Univ Littoral Cote dOpale Lab Oceanol & Geosci UMR 8187 LOG F-62930 Wimereux France;

    Univ Lille Univ Littoral Cote dOpale Lab Oceanol & Geosci UMR 8187 LOG CNRS F-62930 Wimereux France|Tokyo Univ Marine Sci & Technol Dept Marine Energy & Resource Minato Ku 4-5-7 Konan Tokyo 1088477 Japan|Rhodes Univ Dept Zool & Entomol ZA-6140 Grahamstown South Africa;

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  • 正文语种 eng
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  • 关键词

    Behaviour; Gastropods; Littorina littorea; Geotaxis; Scototaxis; Thigmotaxis;

    机译：行为;腹足动物;立陶宛立陶宛;地标;刻板性;趋轴性;

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