Behavioral and demographic responses of the predatory rotifer Asplanchna sieboldii (Leydig, 1854) fed prey (Plationus patulus (Müller, 1786)) previously exposed to cadmium and microplastics

IF 1.7 4区环境科学与生态学 Q3 ECOLOGY Aquatic Ecology Pub Date : 2023-09-23 DOI:10.1007/s10452-023-10061-7

José Antonio Hernández-Lucero, S. S. S. Sarma, S. Nandini

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Abstract

We quantified the feeding behavior (encounter, attack, capture and ingestion) and demographic parameters (survival and reproduction) of the predatory rotifer Asplanchna sieboldii fed on the prey Plationus patulus previously exposed to microplastics (MPs), Cd or their combination. As compared to controls, capture and ingestion rates of P. patulus by A. sieboldii decreased by 71 and 61%, respectively, with prey previously exposed to mixed MPs and Cd treatment. Life table data showed that the predator died earlier in controls than when fed on prey exposed to both Cd and microplastics. Regardless of the prey treatment, the offspring production by A. sieboldii increased as the available prey numbers increased (from 1 to 4 ind. ml⁻¹). Compared to controls, the fecundity rate of the predator decreased when contaminated prey was offered as food.

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捕食性轮虫 Asplanchna sieboldii（Leydig，1854 年）对先前暴露于镉和微塑料的猎物 Plationus patulus（Müller，1786 年）的行为和数量反应

我们量化了掠食性轮虫 Asplanchna sieboldii 在捕食先前暴露于微塑料（MPs）、镉或它们的组合的猎物 Plationus patulus 时的捕食行为（遭遇、攻击、捕获和摄食）和人口参数（存活和繁殖）。与对照组相比，A. sieboldii捕获先前暴露于微塑料和镉混合处理的猎物时，其捕获率和摄食率分别下降了71%和61%。生命表数据显示，与同时暴露于镉和微塑料的猎物相比，对照组的捕食者死亡更早。无论对哪种猎物进行处理，随着可用猎物数量的增加（从 1 到 4 ind. ml-1），A. sieboldii 的后代产量也在增加。与对照组相比，当提供受污染的猎物作为食物时，捕食者的繁殖率下降。

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来源期刊

Aquatic Ecology 环境科学-海洋与淡水生物学

CiteScore

3.90

自引率

0.00%

发文量

审稿时长

3 months

期刊介绍： Aquatic Ecology publishes timely, peer-reviewed original papers relating to the ecology of fresh, brackish, estuarine and marine environments. Papers on fundamental and applied novel research in both the field and the laboratory, including descriptive or experimental studies, will be included in the journal. Preference will be given to studies that address timely and current topics and are integrative and critical in approach. We discourage papers that describe presence and abundance of aquatic biota in local habitats as well as papers that are pure systematic. The journal provides a forum for the aquatic ecologist - limnologist and oceanologist alike- to discuss ecological issues related to processes and structures at different integration levels from individuals to populations, to communities and entire ecosystems.