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Patterns of spatial distribution and behaviour of fish on a rocky intertidal platform at high tide

机译：潮汐岩石平台上鱼类的空间分布和行为模式

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摘要

We describe the patterns of spatial distribution and behaviour of an intertidal fish assemblage on a rocky intertidal platform in the south of Portugal during high tide. Data were collected by surveying a number of predefined transects and focal observations of individual fish. Several interspecific differences, in both zonation and substratum, were found at high tide that were not apparent in observations of pools at low tide. Parablennius sanguinolentus occurred mainly on boulders at the high intertidal, Lipophrys pholis and Coryphoblennius galerita were especially abundant in the upper intertidal. L. canevae and L. trigloides were most abundant in the low intertidal, with L. canevae being restricted to that level. Gobius cobitis used all shore levels, including a significant presence in the subtidal. Species typically considered subtidal, like P. pilicornis and P. gattorugine, were found also in the intertidal at high tide. In the case of P. gattorugine both juveniles and even large adults moved up with the tide, reaching the highest shore levels. C. galerita seemed to be restricted to the vicinity of its low-tide shelters, around crevices and pools, while large specimens of L. pholis and G. cobitis were subject to larger displacements, up and down with the tide. Apart from the benthic component, the fish assemblage is enriched at high tide by a large number of fish, mainly juveniles of pelagic and bentho-pelagic species, meaning that the rocky intertidal may play a nursery role for several non-resident fish species.
机译：我们描述了涨潮期间葡萄牙南部岩石潮间平台上潮间鱼类种群的空间分布和行为模式。通过调查许多预定的样条和单个鱼的聚焦观察来收集数据。在涨潮时发现了几个种间差异，包括在分区和底层，在低潮时观察不到。 Parablennius sanguinolentus主要发生在潮间带高处的巨石上，Lipophrys pholis和Coryphoblennius galerita在潮间带上层特别丰富。低潮间带中L. canevae和L. trigloides含量最高，而L. canevae仅限于该水平。戈比乌斯性结肠炎使用了所有海岸，包括在潮下带大量存在。在潮汐时潮间带，也发现了通常被认为是潮下的物种，例如角膜疟原虫和盖特古霉素。就P. gattorugine而言，无论是少年还是大人都随潮而上，达到了最高的岸上水位。 C. galerita似乎仅限于其低潮庇护所附近，缝隙和水池周围，而大型的L. pholis和G. cobitis标本则随着潮汐而上下移动较大。除底栖生物外，大潮时丰富了鱼类群，主要是浮游和底栖浮游鱼类的幼体，这意味着潮间带岩石可能对几种非定居鱼类起育苗作用。

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