Behavioural responses of Anodonta anatina and Unio pictorum to temperature and algal concentration

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2021-09-30 DOI:10.1093/mollus/eyab036

Charitos Zapitis, Maren Huck, Aradhana Mehra, Mark T Bulling, Andrew Ramsey

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Abstract

Using time-lapse photography in a laboratory setting, we exposed Anodonta anatina and Unio pictorum for 4 h to algal (Chlorella vulgaris) concentrations ranging from 0.5 to 20.0 mg ash-free dry mass l−1 and to three different temperatures (11 ± 1, 15 ± 1 and 19 ± 1 °C). We analysed the proportion of mussels in locomotion, duration of locomotory activities, posterior tip movement and valve opening behaviour. The proportion of mussels in locomotion was significantly higher for A. anatina and for A. anatina was significantly lower at 11 °C. For both species, the proportion of mussels in locomotion, the duration of locomotion and movement of the posterior tip decreased with increasing algal concentration. The locomotory duration was significantly shorter in U. pictorum. In both species, valve opening peaked at intermediate algal concentrations, with the deviation from the peak being more prominent in A. anatina. Finally, we recorded a contrasting locomotory strategy for the two species (A. anatina crawled on the sediment surface, whereas U. pictorum moved through the sediment) and identified potential density dependence in behavioural adaptation.

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鸭齿藻和画影藻对温度和藻类浓度的行为反应

在实验室环境下，利用延时摄影技术，我们将andonta anatina和Unio pictorum暴露在无灰分干质量为0.5至20.0 mg的普通小球藻(Chlorella vulgaris)浓度和3种不同温度(11±1、15±1和19±1℃)下4小时。我们分析了贻贝运动的比例，运动活动的持续时间，后尖端运动和阀门打开行为。在11°C时，白腹贻贝的运动比例显著高于白腹贻贝，而白腹贻贝的运动比例显著低于白腹贻贝。两种贻贝运动的比例、运动的持续时间和后尖端的运动都随着藻类浓度的增加而减少。图兰的运动时间明显较短。在这两个物种中，阀门开度在中等藻类浓度时达到峰值，与峰值的偏差在青尖藻中更为突出。最后，我们记录了两个物种的运动策略对比(a . anatina在沉积物表面爬行，而U. pictorum在沉积物中移动)，并确定了行为适应的潜在密度依赖性。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.