Seasonal dynamics of body size in calanoid copepods (Calanoida: Copepoda) from the stressed tropical coast of India, Chennai, Bay of Bengal

IF 1.7 4区环境科学与生态学 Q3 ECOLOGY

Aquatic Ecology Pub Date : 2023-11-14 DOI:10.1007/s10452-023-10075-1

Md. Anwar Nawaz, Kandhasamy Sivakumar, Gurunathan Baskar

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引用次数: 0

Abstract

Calanoid copepods have gained significant interest due to their rapid response to changes in environment. This study examined the seasonal variation in the size of calanoid copepods and their relationships to various environmental parameters in a tropical coast of India. Zooplankton samples were collected at Marina Beach, India, from January to December 2021. Ten calanoid species were selected based on their distribution to study the seasonal variation in the size, and the results showed a clear seasonal pattern, with smaller size of calanoid observed during summer months with high temperatures and larger sizes during the monsoon season associated with increased rainfall and nutrient availability. Negative correlations were observed between copepod size variation and temperature, while positive correlations were observed with dissolved oxygen, pH, salinity, and chlorophyll-a concentration. Acrocalanus gibber, Acrocalanus gracilis and Canthocalanus pauper showed changes that are more pronounced in body size (0.89–0.99, 1.12–1.23 mm and 1.41–1.52 mm, respectively) indicating species-specific responses to environmental fluctuations. These findings highlight the influence of environmental parameters in determining the size of calanoid copepods in tropical oceans. Moreover, this study contributes to our understanding of the ecological processes and global warming that determine copepod size variation in coastal ecosystems.

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印度钦奈、孟加拉湾受压热带海岸桡足类（桡足类：Copepoda）体型的季节性动态变化

桡足类因其对环境变化的快速反应而备受关注。本研究考察了印度热带海岸桡足类桡足类大小的季节性变化及其与各种环境参数的关系。研究人员于 2021 年 1 月至 12 月在印度滨海海滩采集浮游动物样本。研究结果表明，桡足类的大小有明显的季节性变化，夏季气温高时，桡足类的大小较小，而季风季节降雨量和营养物质增加时，桡足类的大小较大。桡足类的大小变化与温度呈负相关，而与溶解氧、pH 值、盐度和叶绿素-a 浓度呈正相关。Acrocalanus gibber、Acrocalanus gracilis 和 Canthocalanus pauper 的体型变化更为明显（分别为 0.89-0.99、1.12-1.23 毫米和 1.41-1.52 毫米），这表明物种对环境波动的反应具有特异性。这些发现凸显了环境参数对热带海洋桡足类体型的影响。此外，这项研究有助于我们了解决定沿海生态系统桡足类体型变化的生态过程和全球变暖。

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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.