How predator and parasite size interact to determine consumption of infectious stages
How predator and parasite size interact to determine consumption of infectious stages
复制标题
捕食者和寄生虫的大小如何相互作用来确定感染阶段的消耗
DOI：
10.1007/s00442-021-05010-w
复制
发表时间：
2021
期刊：
影响因子：
2.7
通讯作者：
Johnson, Pieter T.
中科院分区：
文献类型：
--
作者：
McDevitt-Galles, Travis;Carpenter, Sara A.;Koprivnikar, Janet;Johnson, Pieter T.
寄生虫是生态群落中的重要参与者，可以塑造群落结构，影响生态系统能量流动。然而，除了对宿主的影响外，寄生虫还可以作为捕食者的重要猎物来源。在环境中消耗感染阶段的捕食者可以从营养丰富的猎物项目中受益，同时减少向下游宿主的传播，突显了这种相互作用的广泛重要性。然而，不太清楚的是，寄生虫和捕食者的具体特征增加了消费的可能性。在这里，我们确定了捕食者和寄生虫的形态特征的什么组合(S)导致了寄生虫的高消耗。我们用不同的觅食策略和形态将五种吸虫(吸虫)分类群的感染阶段(尾蚴)暴露给水生昆虫捕食者。在所测试的19种捕食者-寄生虫组合中，平均而言，短尾蝇科的蜻蜓捕食者是尾蚴最有效的捕食者，它们消耗了13%至55%的已注射尾虫。大体尾蚴对捕食的平均易感性最高，捕食率为37-48%。捕食者头部宽度和尾部大小之间的交互作用强烈影响捕食概率：小体捕食者是最有效的捕食者，特别是对较大的尾部寄生虫。因此，捕食寄生虫的可能性很大程度上取决于捕食者和寄生虫之间的相对大小。我们的研究有助于建立对自由生活的寄生虫的捕食在很大程度上遵循更广泛的捕食者-猎物框架。这将有助于识别哪些捕食者和寄生虫组合可能具有高消耗性相互作用，从而潜在地减少寄生虫在自然种群中的传播。
Parasites are important players in ecological communities that can shape community structure and influence ecosystem energy flow. Yet beyond their effects on hosts, parasites can also function as an important prey resource for predators. Predators that consume infectious stages in the environment can benefit from a nutrient-rich prey item while concurrently reducing transmission to downstream hosts, highlighting the broad importance of this interaction. Less clear, however, are the specific characteristics of parasites and predators that increase the likelihood of consumption. Here, we determine what combination(s) of predator and parasite morphological traits lead to high parasite consumption. We exposed the infectious stages (cercariae) of five trematode (fluke) taxa to aquatic insect predators with varying foraging strategies and morphologies. Across the 19 predator—parasite combinations tested, damselfly predators in the family Coenagrionidae were, on average, the most effective predators of cercariae, consuming between 13 and 55% of administered cercariae. Large-bodied cercariae ofRibeiroia ondatraehad the highest average vulnerability to predation, with 37–48% of cercariae consumed. The interaction between predator head width and cercariae tail size strongly influenced the probability of consumption: small-bodied predators were the most effective consumers, particularly for larger tailed parasites. Thus, the likelihood of parasite consumption depended strongly on the relative size between predator and parasite. Our study helps establish that predation on free-living parasites largely follows a broader predator–prey framework. This will help to identify which predator and parasite combinations will likely have high consumptive interactions, potentially reducing parasite transmission in natural populations.
登录
查看更多内容
吸虫尾蚴宿主寻找行为的生理分析：传播成功的适应
影响因子：
2.4
作者：
W. Haas
通讯作者：
W. Haas
影响因子：
2.6
作者：
Hopkins, Skylar R.;Wyderko, Jennie A.;Sheehy, Robert R.;Belden, Lisa K.;Wojdak, Jeremy M.
通讯作者：
Wojdak, Jeremy M.
自由生活的寄生虫感染阶段在被捕食的风险下促进浮游动物的丰度
影响因子：
2.7
作者：
Ben Schultz;J. Koprivnikar
通讯作者：
J. Koprivnikar
具有多个个体发生生态位转变的捕食者的种群增长和自上而下控制猎物的潜力有限
DOI：
10.1086/670614
发表时间：
2013
期刊：
The American Naturalist
影响因子：
--
作者：
A. van Leeuwen;Magnus Huss;A. Gårdmark;M. Casini;F. Vitale;J. Hjelm;L. Persson;A. D. de Roos
通讯作者：
A. D. de Roos
线虫螺旋虫的生活史 Stunkard 1923 吸虫纲：来自锦龟的螺旋虫科。
影响因子：
1.3
作者：
C. G. Goodchild;D. Kirk
通讯作者：
D. Kirk