Feeding strategies of the pelagic stingray (Pteroplatytrygon violacea) in the western Mediterranean Sea

IF 3 3区环境科学与生态学 Q2 ENVIRONMENTAL SCIENCES

Marine environmental research Pub Date : 2024-07-23 DOI:10.1016/j.marenvres.2024.106651

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引用次数: 0

Abstract

Elasmobranchs play crucial roles as predators in marine ecosystems. Understanding their trophic strategies and interactions is necessary for comprehending food web dynamics and developing ecosystem-based management strategies. Although, feeding strategies can change depending on several factors, including fluctuations in prey availability throughout the year. In this study, we investigated the trophic ecology of the pelagic stingray, Pteroplatytrygon violacea, the only stingray inhabiting the pelagic environment in the western Mediterranean Sea. We found significant temporal differences in diet composition, mostly consuming pelagic zooplankton in spring, whereas benthopelagic teleosts in autumn. After contrasting different studies, P. violacea appears to have a generalist and opportunistic diet consisting of a broad spectrum of pelagic and benthopelagic species, and trophic plasticity in response to environmental fluctuations. Our findings suggest that P. violacea can present different feeding strategies, mainly pelagic, with a relatively low trophic position for a mesopredator compared to other batoids.

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地中海西部中上层黄貂鱼（Pteroplatytrygon violacea）的进食策略。

脂鳃亚纲动物在海洋生态系统中扮演着捕食者的重要角色。了解它们的营养策略和相互作用对于理解食物网动态和制定基于生态系统的管理策略非常必要。然而，摄食策略会因多种因素而改变，包括全年猎物供应量的波动。在这项研究中，我们调查了中上层黄貂鱼（Pteroplatytrygon violacea）的营养生态学，这是唯一一种栖息在地中海西部中上层环境中的黄貂鱼。我们发现，黄貂鱼的食物组成存在明显的时间差异，春季主要摄食浮游浮游动物，而秋季则主要摄食底栖长鳍鱼类。通过对比不同的研究结果，我们发现暴鲤鱼似乎是一种机会主义的通食性鱼类，其食物包括广泛的浮游和底栖物种，并具有营养可塑性以应对环境波动。我们的研究结果表明，暴鲤鱼可以采取不同的摄食策略，主要以浮游生物为主，与其他蝠鲼相比，其营养级相对较低。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Marine environmental research 环境科学-毒理学

CiteScore

5.90

自引率

3.00%

发文量

217

审稿时长

46 days

期刊介绍： Marine Environmental Research publishes original research papers on chemical, physical, and biological interactions in the oceans and coastal waters. The journal serves as a forum for new information on biology, chemistry, and toxicology and syntheses that advance understanding of marine environmental processes. Submission of multidisciplinary studies is encouraged. Studies that utilize experimental approaches to clarify the roles of anthropogenic and natural causes of changes in marine ecosystems are especially welcome, as are those studies that represent new developments of a theoretical or conceptual aspect of marine science. All papers published in this journal are reviewed by qualified peers prior to acceptance and publication. Examples of topics considered to be appropriate for the journal include, but are not limited to, the following: – The extent, persistence, and consequences of change and the recovery from such change in natural marine systems – The biochemical, physiological, and ecological consequences of contaminants to marine organisms and ecosystems – The biogeochemistry of naturally occurring and anthropogenic substances – Models that describe and predict the above processes – Monitoring studies, to the extent that their results provide new information on functional processes – Methodological papers describing improved quantitative techniques for the marine sciences.