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首页> 外文期刊>Marine biology >Castrating effects of trematode larvae on the reproductive success of a highly parasitized population of Crepipatella dilatata (Caenogastropoda) in Argentina
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Castrating effects of trematode larvae on the reproductive success of a highly parasitized population of Crepipatella dilatata (Caenogastropoda) in Argentina

机译：蠕虫幼虫对阿根廷高度寄生的Crepipatella dilatata（Caenogastropoda）种群繁殖成功的割效应

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摘要

Crepipatella dilatata (Calyptraeidae) is a common intertidal or shallow subtidal protandric hermaphroditic gastropod. Intertidal snails from Puerto Madryn, Chubut, Argentina (42°46'37"S, 64°54'51" W), showed a high prevalence, up to 46 %, of a castrating larval microphallid trematode. Reproductive success was studied during a 2-year period from September 2007 to August 2009, and the results were compared to those from an unparasitized subtidal sample. Brooding females and males were never found infected. The proportion of brooding females was higher in months with a higher prevalence of infection. The number of brooding females in the intertidal sample was higher than in the subtidal sample. Generalized linear models were utilized to determine the effects of parasitism on the reproductive success of the host population. Anticipated reproduction in smaller females in the intertidal sample, increased reproductive success in months with higher prevalence, and unparasitized males are interpreted as fitness responses to ensure host population survival when the prevalence of trematode infection is high.
机译：Crepipatella dilatata（Calyptraeidae）是常见的潮间带或浅潮下原生两性腹足纲。来自阿根廷丘布特的马德林港的潮间蜗牛（42°46'37“ S，64°54'51” W）表现出很高的流行率，高达46％的a割幼虫微孔线虫。在2007年9月至2009年8月的2年中研究了生殖的成功，并将结果与​​未寄生化的潮间带样本进行了比较。从未发现育雏的雌性和雄性。感染率较高的月份中，育雏女性的比例更高。潮间样本中的雌性育雏数量高于潮下样本。利用广义线性模型来确定寄生对宿主种群繁殖成功的影响。潮间带样本中较小雌性的预期繁殖，流行率较高的月份中的繁殖成功率增加，以及未寄生虫的雄性被解释为适应性反应，以确保在吸虫感染率较高时确保宿主种群存活。

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  • 来源
    《Marine biology》 |2012年第10期|p.2259-2267|共9页
  • 作者

    Carmen Gilardoni; Cristian Ituarte; Florencia Cremonte;

  • 作者单位

    Centre Nacional Patagonico (CONICET), Boulevard Brown 2915, U9120ACD Puerto Madryn, Chubut, Argentina;

    Division Zoologfa Invertebrados, Museo Argentino de Ciencias Naturales, Av. Angel Gallardo 470, C1405DJR Buenos Aires,Argentina;

    Centre Nacional Patagonico (CONICET), Boulevard Brown 2915, U9120ACD Puerto Madryn, Chubut, Argentina;

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