Larval development of Grimothea gregaria (Fabricius, 1793) (Decapoda: Munididae) in coastal waters of the Falkland Islands

IF 2.6 3区地球科学 Q1 MARINE & FRESHWATER BIOLOGY

Estuarine Coastal and Shelf Science Pub Date : 2025-05-09 DOI:10.1016/j.ecss.2025.109351

Rebecca Piontek , Alexander Arkhipkin , Tobias Büring

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引用次数: 0

Abstract

This study investigates the larval development of Grimothea gregaria (Fabricius 1793), an abundant decapod species in the Falkland Islands' coastal and shelf waters. Sampling occurred from August 2020 to January 2022 at 5m depths of east Falkland, utilizing bongo nets for planktonic collection. Six distinct larval stages were distinguished: Prezoea (P), four Zoea stages (Z), and Megalopea. Our research adds an early zoea stage and introduces a simplified identification guide based on anatomical development and temporal occurrence. Notably, this study reveals significant overlapping bloom periods between stages, with stage P and Z5 presenting the longest durations. The findings analysed temperature and chlorophyll a influence, on larval development stages, providing insights into their ecological role and potential significance. The results indicate rapid ontogenetic development in correlation to temperature and chlorophyll a variations, highlighting the necessity for continued research on the G. gregaria's impact on marine ecosystems and its potential as a fishery resource. Given its role as a widely consumed species across multiple trophic levels, any shifts in its population dynamics due to climate change could have cascading effects throughout the southwestern Atlantic ecosystem.

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福克兰群岛近岸海域灰鼠蛾幼虫发育（十足目：灰鼠科）

本文研究了福克兰群岛沿海和陆架水域丰富的十足类植物Grimothea gregaria （fabicius 1793）的幼虫发育情况。取样于2020年8月至2022年1月在福克兰东部5米深处进行，利用bongo网进行浮游生物收集。鉴定出6个不同的幼虫阶段：前虫期(P)、4个虫期(Z)和大虫期（Megalopea）。我们的研究增加了早期动物阶段，并引入了基于解剖发育和时间发生的简化识别指南。值得注意的是，本研究发现不同花期有明显的重叠，其中P期和Z5期持续时间最长。研究结果分析了温度和叶绿素a对幼虫发育阶段的影响，为它们的生态作用和潜在意义提供了见解。结果表明，与温度和叶绿素a变化相关的个体发育迅速，强调了继续研究G. gregaria对海洋生态系统的影响及其作为渔业资源的潜力的必要性。鉴于其作为一种被广泛消费的物种在多个营养水平上的作用，气候变化导致的任何种群动态变化都可能在整个西南大西洋生态系统中产生级联效应。

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

Estuarine Coastal and Shelf Science 地学-海洋学

CiteScore

5.60

自引率

7.10%

发文量

374

审稿时长

9 months

期刊介绍： Estuarine, Coastal and Shelf Science is an international multidisciplinary journal devoted to the analysis of saline water phenomena ranging from the outer edge of the continental shelf to the upper limits of the tidal zone. The journal provides a unique forum, unifying the multidisciplinary approaches to the study of the oceanography of estuaries, coastal zones, and continental shelf seas. It features original research papers, review papers and short communications treating such disciplines as zoology, botany, geology, sedimentology, physical oceanography.