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首页> 外文期刊>Estuarine Coastal and Shelf Science >Behavioural adaptations in talitrids from two Atlantic beaches
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Behavioural adaptations in talitrids from two Atlantic beaches

机译：来自两个大西洋海滩的talitrids的行为适应

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摘要

The aim of the present study was to test sun orientation and rhythmic activity of two sandhopper populations from two Atlantic macro-tidal beaches. A population from Le Verger beach (orientated to 346°, Ille et Vilaine, Brittany, France) and a population from Damgan (orientated to 195°, Morbihan, Brittany, France), were tested on the beach under clear sky discriminating for landscape vision. For both populations locomotor activity rhythm was recorded in the laboratory. The two beaches differed for climatic features, tidal range and for human use. Both talitrid populations resulted very well orientated toward the shoreline, and both used solar position and landscape vision to orient. However the multiple regression analysis of orientation with climatic features showed a different use of local cues by the two populations and a slight influence of tidal regime (ebbing and rising tide), in spite of the supralittoral zonation of sandhoppers. In the laboratory they showed a well defined rhythmic behaviour as well as a bimodal rhythmicity, explained as a tidal one. These results are a new brick in the complex picture of orientation and rhythm studies on sandy beach invertebrates.
机译：本研究的目的是测试来自两个大西洋大潮滩的两个沙蝉种群的太阳方向和节律活动。在晴朗的天空下，在沙滩上测试了来自勒韦格（Le Verger）海滩的人群（方向为346°，法国布列塔尼的Ille et Vilaine）和来自丹甘的人群（方向为195°，法国布列塔尼，莫比汉），以区分景观。在实验室中记录了这两种人群的运动活动节律。这两个海滩在气候特征，潮差和人类使用方面有所不同。两种滑石种群都很好地朝向海岸线，并且都使用了太阳位置和景观视觉来进行定向。然而，尽管沙漏有沿上带状分布，但对具有气候特征的方位进行的多元回归分析表明，这两种种群对当地线索的使用不同，并且对潮汐制度（退潮和涨潮）的影响很小。在实验室中，他们表现出良好的节律行为和双峰节律，被解释为潮汐。这些结果是在沙滩无脊椎动物定向和节奏研究的复杂图景中的一块新砖。

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