The occurrence of trophically transmitted parasites is influenced by the trophic level and body size of the fish host

IF 1.6 3区 农林科学 Q3 FISHERIES Ecology of Freshwater Fish Pub Date : 2023-04-09 DOI:10.1111/eff.12720
Atsler Luana Lehun, João Otávio Santos Silva, Gabriela Michelan, Fernando Miranda Lansac-Tôha, Lidiany Doreto Cavalcanti, Ricardo Massato Takemoto
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Abstract

Endoparasites that are trophically transmitted are closely intertwined and constrained by the structure of the food chain. Each fish species can be used as an intermediate or definitive host; thus, the position it occupies in the food web and the body size can be determining factors for the presence of parasites and their transmission. Considering that fish can be parasitized by larval and adult stage endoparasites and that they are exposed to a wide variety of parasite species, we used a helminth dataset from 70 fish species and tested whether the total parasite richness, larval and adult, of fish from the upper Paraná River floodplain can be explained by body size and trophic level. For the trophic level, we observed an increasing trend in the richness of larval parasites. Regarding the richness of adult parasites and the total richness, we observed an increase as a function of the body size of the host. The tropic position and body size of the fish were good predictors, indicating that the position of the host in the trophic chain can influence and determine its life cycle.

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通过营养途径传播的寄生虫的发生受到鱼类宿主的营养水平和体型的影响
营养传播的内寄生虫紧密地交织在一起,并受到食物链结构的限制。每种鱼类都可作为中间或最终寄主;因此,它在食物网中的位置和体型可能是寄生虫存在及其传播的决定因素。考虑到鱼类可以被幼虫期和成虫期的内寄生虫寄生,并且它们暴露于各种各样的寄生虫,我们使用了来自70种鱼类的寄生虫数据,并测试了来自帕拉纳河上游泛滥平原的鱼类的幼虫和成虫的总寄生虫丰富度是否可以用身体大小和营养水平来解释。在营养水平上,我们观察到寄生虫幼虫的丰富度呈增加趋势。关于成虫的丰富度和总丰富度,我们观察到随寄主体型的增大而增加。鱼类的热带位置和体型是很好的预测因子,表明寄主在营养链中的位置可以影响和决定其生命周期。
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来源期刊
Ecology of Freshwater Fish
Ecology of Freshwater Fish 农林科学-海洋与淡水生物学
CiteScore
4.10
自引率
0.00%
发文量
45
审稿时长
12-24 weeks
期刊介绍: Ecology of Freshwater Fish publishes original contributions on all aspects of fish ecology in freshwater environments, including lakes, reservoirs, rivers, and streams. Manuscripts involving ecologically-oriented studies of behavior, conservation, development, genetics, life history, physiology, and host-parasite interactions are welcomed. Studies involving population ecology and community ecology are also of interest, as are evolutionary approaches including studies of population biology, evolutionary ecology, behavioral ecology, and historical ecology. Papers addressing the life stages of anadromous and catadromous species in estuaries and inshore coastal zones are considered if they contribute to the general understanding of freshwater fish ecology. Theoretical and modeling studies are suitable if they generate testable hypotheses, as are those with implications for fisheries. Manuscripts presenting analyses of published data are considered if they produce novel conclusions or syntheses. The journal publishes articles, fresh perspectives, and reviews and, occasionally, the proceedings of conferences and symposia.
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