Abstract Feeding behavior of marine bivalves is largely regulated by the interactive effects of various intrinsic biological factors and extrinsic ecological factors. Therefore, an integrated multivariate approach was applied to explore a deeper knowledge about the feeding biology of the green mussel (Perna viridis), collected from the south-east coastal regions of the Bay of Bengal in Bangladesh, by interlinking among ecological factors, seasonal plankton dynamics, reproductive traits and plankton ingestion data. The correlation test, multivariate approaches and cluster analysis displayed that both the water parameters and ingested gut plankton abundance and their compositions were predominantly influenced by the seasonality and ecological factors of the environment. The selectivity indices analysis confirmed that green mussels preferentially ingested on the selective taxa of plankton. The multivariate analyses revealed that plankton ingestion by green mussels was not discriminated by their sexual dimorphism, however, it displayed an enhancement during their gonad development and maturation stages confirming that P. viridis espouses opportunistic patterns to build up their gonads by utilizing energy from the ingested planktons available in the water column. The correlation outcomes consistently demonstrated that the quantitative ingestion of plankton was positively correlated with the gonadosomatic index value of the green mussels. Although, green mussels predominantly ingested the Coscinodiscophyceae (20–60% of total ingestion), they also selectively ingested an increased amount of Bacillariophyceae, Fragillariophyceae, Dinophyceae and zooplankton during their gonad development and maturation stages to meet the special and unique metabolic requirements of crucial gametogenesis stages. Taken together all datasets, principal component analysis (PCA) was applied: the first two principal components showed that seasonality and reproductive cycle explained >47% of the variability. In both cases, PCA analysis revealed that the multiplex scenario of selective ingestion of P. viridis on different plankton taxa were predominantly interlinked with the seasonality, ecological drivers, and plankton biomass and their community structure in the water column depending on the metabolic energy requirement during their crucial gametogenesis stages. Finally, the outcomes from these broad datasets provide a better understanding about the selective feeding behavior of P. viridis, which is essential to maintain the sustainability of the ecosystems as well as to improve the growth and productivity of the existing production systems of this important species.

中文翻译：

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孟加拉湾东南海岸绿贻贝（Perna viridis）的生态生理因素、季节性浮游生物动态和选择性摄食行为之间的多方面联系

摘要 海洋双壳类的摄食行为在很大程度上受各种内在生物因素和外在生态因素的相互作用影响。因此，应用综合多元方法，通过生态因素、季节性浮游生物之间的相互联系，更深入地了解从孟加拉国孟加拉湾东南沿海地区收集的绿贻贝 (Perna viridis) 的摄食生物学知识。动力学、生殖特性和浮游生​​物摄入数据。相关性测试、多变量方法和聚类分析表明，水参数和摄入的肠道浮游生物丰度及其组成主要受环境的季节性和生态因素的影响。选择性指数分析证实，绿贻贝优先摄取浮游生物的选择性分类群。多变量分析表明，绿贻贝对浮游生物的摄取不受其性别二态性的区分，然而，它在性腺发育和成熟阶段表现出增强，证实了绿贻贝通过利用摄取的能量来建立其性腺的机会主义模式水柱中可利用的浮游生物。相关结果一致表明，浮游生物的定量摄入与绿贻贝的性腺指数值呈正相关。虽然，绿贻贝主要摄取 Coscinodiscophyceae（总摄取量的 20-60%），但它们也选择性摄取增加的 Bacillariophyceae，Fragillariophyceae、Dinophyceae 和浮游动物在其性腺发育和成熟阶段，以满足关键配子发生阶段的特殊和独特的代谢需求。将所有数据集放在一起，应用主成分分析 (PCA)：前两个主成分表明季节性和生殖周期解释了 > 47% 的变异性。在这两种情况下，PCA 分析表明，在不同浮游生物分类群上选择性摄取绿藻的多重情景主要与季节性、生态驱动因素和浮游生物生物量及其在水体中的群落结构相互关联，这取决于期间的代谢能量需求。它们关键的配子发生阶段。最后，