墨西哥下加利福尼亚马格达莱纳湾主要浮游动物群(双足目、桡足目和十足目)丰度和非捕食性死亡率的时间变化

IF 1.2 4区 生物学 Q3 MARINE & FRESHWATER BIOLOGY Journal of Crustacean Biology Pub Date : 2023-10-27 DOI:10.1093/jcbiol/ruad056
Emilio Alejandro Alemany-Rodríguez, Sergio Hernández-Trujillo, Yadian Israel La Rosa-Izquierdo
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引用次数: 0

摘要

摘要在海洋生态研究中,对浮游动物死亡流行率的估计越来越有必要。本文旨在确定墨西哥Magdalena湾历史上最丰富的三种浮游动物类群(桡足类、十足类和双足类)的活/死个体的相对比例。在2015-2018年期间,每月记录小潮丰度数据和环境变率。样品用中性红色染色以区分活的和死的个体。桡足类是最丰富的类群,并且在研究期间表现出显著的年变化。受之前的暖期和2015 - 2016年El Niño事件的影响,2015年报告了所有三个分类群的最低丰度和最高记录的直立死亡率;El Niño期间的站立死亡率是其他观察的两倍。在分析的一些环境变量(盐度、温度)与桡足类和十足类直立死亡增加之间发现了显著的相关性。我们发现,在分析的年份之间,以及所涉及的分类类群之间(桡足类17%,十足类21%),活/死生物的百分比存在差异,这强调了在浮游动物生态学研究中纳入死亡率分析的重要性。
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Temporal variability of abundance and non-predation mortality of some major groups of crustacean zooplankton (Diplostraca, Copepoda, and Decapoda) in Magdalena Bay, Baja California, Mexico
Abstract Estimates of the prevalence of dead zooplankton are increasingly necessary in marine ecological studies. We aimed to identify the relative proportions of live/dead individuals of three of the historically most abundant taxa of zooplankton in Magdalena Bay, Mexico: copepods, decapods, and diplostracans. Abundance data and environmental variability were recorded monthly at neap tides during 2015–2018. Samples were stained with neutral red to distinguish living from dead individuals. Copepods were the most abundant group and showed a significant annual variability in their abundance during the study period. Influenced by a preceding warm spell and the El Niño event of 2015–2016, the lowest abundances and the highest recorded standing mortalities of all three taxa were reported in 2015; standing mortality during El Niño was double that otherwise observed. A significant correlation was found between some of the environmental variables analyzed (salinity, temperature) and increased standing mortalities in copepods and decapods. We found differences between the percentages of live/dead organisms between the years analyzed and also between the taxonomic groups involved (copepods 17%, decapods 21%), which underlines the importance of including mortality analyses in ecological studies of zooplankton.
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来源期刊
Journal of Crustacean Biology
Journal of Crustacean Biology 生物-海洋与淡水生物学
CiteScore
2.10
自引率
9.10%
发文量
66
审稿时长
6-12 weeks
期刊介绍: The Journal of Crustacean Biology is the official journal of The Crustacean Society, publishing peer-reviewed research on all aspects of crustacean biology and other marine arthropods. Papers are published in English only, but abstracts or summaries in French, German, Portuguese, or Spanish may be added when appropriate.
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