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首页> 外文期刊>Limnologica >Additive multiple predator effects of two specialist paradiaptomid copepods towards larval mosquitoes
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Additive multiple predator effects of two specialist paradiaptomid copepods towards larval mosquitoes

机译：两位专业巴拉迪癌桡足曲面向幼虫蚊子的添加剂多捕食者效应

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摘要

Interactions between multiple predators can profoundly affect prey risk, with implications for prey population stability and ecosystem functioning. In austral temporary wetlands, arid-area adapted specialist copepods are key predators for much of the hydroperiod. Limited autoecological information relating to species interactions negates understandings of trophic dynamics in these systems. In the present study, we examined multiple predator effects of two key predatory paradiaptomid copepods which often coexist in austral temporary wetlands, Lovenula raynerae Suarez-Morales, Wasserman and Dalu 2015 and Paradiaptomus lamellatus Sars, 1985. Predation rates towards larval mosquito prey across different water depths were quantified. Using a comparative functional response approach, individual L. raynerae exhibited significantly higher feeding rates than P. lamellatus, characterised by higher attack rates, shorter handling times and higher maximum feeding rates. Increasing water depth tended to negatively affect prey consumption, particularly for L. raynerae. Interspecific multiple predator consumption combined additively, and thus prey risks were well-predicted from consumption rates by individual paradiaptomid copepod species, irrespective of water depth. Our results suggest that increasing copepod predator diversity in austral temporary wetland ecosystems additively heightens prey risk across different water volumes, and may help to regulate disease vector mosquito populations. Therefore, the numerical extent, phenology and diversity of predator hatching events during the hydroperiod may substantially mediate interaction strengths in these ecosystems.
机译：多个捕食者之间的相互作用可以深刻地影响猛禽风险，对猎物群稳定性和生态系统运行的影响。在澳大利亚临时湿地，干旱地区适应的专家桡足类是大部分氢超期的关键捕食者。有限的自体生态信息与物种相互作用有关否定了这些系统中的营养动态的谅解。在本研究中，我们检查了两种关键掠夺性帕拉扎蛋白蛋白酶的多种捕食者效应，通常在澳累湿地湿地，Lovenula Raynerae Suarez-Morales，Wasserman和Dalu 2015和Paradiaptomus Lamellatus Sars，1985年。在不同水域的幼虫蚊子捕食率达到捕食率深度量化。使用比较功能响应方法，单独的L. Raynerae表现出比P. Lamellatus显着更高的饲料率，其特征在于较高的攻击率，较短的处理时间和更高的最大馈电率。增加水深倾向于对猎物消费产生负面影响，特别是对于L. Raynerae。无特异性多种捕食者消费加剧地相结合，因此无论水深如何，各个巴拉达癌桡足类药物的消费率都会受到良好的风险。我们的研究结果表明，澳洲临时湿地生态系统中增加了Copepod捕食者多样性，在不同的水量上增加了猛禽风险，并可能有助于调节疾病矢量蚊帐。因此，在氢化体期间的捕食者孵化事件的数值，候选和多样性可以基本上介导这些生态系统中的相互作用。

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