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首页> 外文期刊>Estuarine Coastal and Shelf Science >Homing behaviour and individual identification of the pipefish Nerophis lumbriciformis (Pisces; Syngnathidae): a true intertidal resident?
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Homing behaviour and individual identification of the pipefish Nerophis lumbriciformis (Pisces; Syngnathidae): a true intertidal resident?

机译：the鱼Nerophis lumbriciformis（双鱼座； Syngnathidae）的归巢行为和个体识别：真正的潮间带居民吗？

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摘要

Syngnathids have been the focus of growing interest due to their peculiar reproductive biology and vulnerability to environmental degradation and overcollecting. In this study, near the south limit of the species' geographic distribution, a description of the homing behaviour of the worm pipefish, Nerophis lumbriciformis, based on the unique facial pigmentation patterns, is presented. Even though the amount of facial pigmentation was substantially higher in larger adult females, suggesting that it can be part of the secondary sexual repertoire of this sex role reversed species, this technique allowed for the positive identification of adult individuals (males and females) during at least 19 months. Recaptures showed that this pipefish shows a strong homing behaviour, with individuals being regularly captured within less than 2 m of the original identification event. The absence of horizontal migrations to adjacent areas and the observation of adults in the subtidal, together with the overall low number of recaptures (even though some individuals were cyclically resighted) highlighted the fact that the intertidal is not N. lumbriciformis' permanent residence. This observation also demonstrates that the estimation of the population size, important for conservation purposes, based solely on intertidal data can be misleading because captured individuals are only a fraction of a larger, mainly subtidal, population.
机译：由于Syngnathids独特的生殖生物学以及对环境退化和过度采集的脆弱性，它们已成为人们越来越关注的焦点。在这项研究中，在该物种地理分布的最南端附近，基于独特的面部色素沉着模式，描述了蠕形pipe鱼（Nerophis lumbriciformis）的归巢行为。即使面部较大的成年雌性的面部色素沉着量显着增加，表明它可能是这种性别角色反转物种的次要性组成部分的一部分，但该技术可以在成年期对成年个体（雄性和雌性）进行阳性鉴定。至少19个月。捕获结果显示，该pipe鱼表现出强烈的归巢行为，在原始识别事件的不到2 m内定期捕获个体。由于没有潮汐向邻近区域的水平迁移，而且在潮下带还没有观察到成虫，再捕的总体数量很少（即使周期性地对一些人进行了观察），这说明潮间带不是鲁氏猪笼草的永久居留地。该观察结果还表明，仅根据潮间数据，对保护目的重要的种群规模估计可能会产生误导，因为捕获的个体仅是较大的，主要是潮下种群的一小部分。

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