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首页> 外文期刊>EcoHealth >Increased Parasitism of Limpets by a Trematode Metacercaria in Fisheries Management Areas of Central Chile: Effects on Host Growth and Reproduction: Management Areas and Parasitism
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Increased Parasitism of Limpets by a Trematode Metacercaria in Fisheries Management Areas of Central Chile: Effects on Host Growth and Reproduction: Management Areas and Parasitism

机译：智利中部渔业管理区的吸虫寄生虫增加了卷毛寄生虫：对寄主生长和繁殖的影响：管理区和寄生虫

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摘要

The rapid increase in body size and abundance of most species inside Management and Exploitations Areas for Benthic Resources (MEABRs) has led to the proposal of these areas as a good complement for achieving the conservation objectives of Marine Protected Areas (MPAs). However, when evaluating MEABRs and MPAs as conservation and/or management tools, their impact upon parasite populations has rarely been considered, despite the fact that epidemiological theory suggests an increased susceptibility to parasitism under high population abundance. We evaluated the effects of MEABRs on the parasite abundance of Proctoeces lintoni and its impact on the growth of the host limpet Fissurella crassa in central Chile. Parasitic magnitude was higher inside MEABRs than in Open-Access Areas, and parasitized limpets showed a greater shell length, muscular foot biomass, and gonadosomatic index compared to non-parasitized limpets of the same age. Our results suggest that the life cycle of P. lintoni and, consequently, its trophic links have been strengthened inside MEABRs. The increased growth rate could reduce the time required to reach the minimum catch size and increase the reproductive and muscular output of the host population. Thus, parasitism should be considered in the conservation and management of economically important mollusk hosts.
机译：底栖资源管理和开发区（MEABR）内大多数物种的体型迅速增加，大多数物种的数量迅速增加，因此提出了将这些地区作为实现海洋保护区（MPA）保护目标的良好补充的提议。但是，当评估MEABR和MPA作为保护和/或管理工具时，尽管流行病学理论表明在高种群数量下对寄生虫的敏感性增加，但很少考虑它们对寄生虫种群的影响。我们评估了MEABRs对亚麻变形杆菌的寄生虫丰度的影响及其对智利中部羽扇豆Fissurella crassa的生长的影响。与相同年龄的非寄生虫相比，MEABR内部的寄生虫数量级要比开放区域高，并且寄生虫的帽贝显示出更大的壳长，肌肉脚生物量和性腺机能指数。我们的研究结果表明，在MEABR内部加强了lintoni的生命周期及其营养联系。增长的增长率可以减少达到最小捕获量所需的时间，并增加寄主种群的生殖和肌肉产量。因此，在保护和管理重要的软体动物宿主时应考虑寄生。

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