First record of preying behaviour of Achelous spinimanus

IF 1.6 4区环境科学与生态学 Q3 ECOLOGY

Austral Ecology Pub Date : 2024-11-13 DOI:10.1111/aec.70008

Alexandre R. da Silva, Alexandre D. Kassuga

引用次数: 0

Abstract

Achelous spinimanus, a species of swimming crab found along the Western Atlantic from the USA to Brazil, inhabits coastal areas up to 90 m deep across various substrates. While these crabs are known to be omnivorous, the extent of their predatory behaviour remains unclear. This note documents the first record of A. spinimanus actively preying on live fish. In the observed interaction, the fish was still alive and moving its operculum and mouth while being eaten. The observation was made during a night dive at Ilha dos Porcos, Arraial do Cabo, Brazil, where a crab was seen preying on a live Malacoctenus zaluari. The behaviour suggests that A. spinimanus may employ sit-and-wait strategy, utilizing its strong chelipeds for capturing prey. Such records are crucial for understanding the trophic dynamics and ecological roles of marine species, emphasizing the importance of both scientific and citizen science contributions to biodiversity knowledge. This finding also underscores the importance of further research on the feeding and behavioural ecology of portunids.

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Achelous spinimanus捕食行为的首次记录

Achelous spinimanus 是一种游蟹，分布在从美国到巴西的西大西洋沿岸，栖息于水深达 90 米的沿海地区的各种底质上。虽然这些螃蟹是杂食性的，但其捕食行为的程度仍不清楚。本报告首次记录了 A. spinimanus 主动捕食活鱼的行为。在观察到的互动中，鱼仍然活着，并在被吃掉的同时活动着厣和嘴。这次观察是在巴西阿拉亚尔-杜卡博的波尔科斯岛（Ilha dos Porcos）的一次夜间潜水中进行的，当时看到一只螃蟹正在捕食一条活的马拉科腾鱼（Malacoctenus zaluari）。这种行为表明，A. spinimanus 可能采用坐等策略，利用其强壮的螯足捕捉猎物。这些记录对于了解海洋物种的营养动态和生态作用至关重要，强调了科学和公民科学对生物多样性知识贡献的重要性。这一发现也强调了进一步研究栉水母的摄食和行为生态学的重要性。

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

Austral Ecology 环境科学-生态学

CiteScore

2.90

自引率

6.70%

发文量

117

审稿时长

12-24 weeks

期刊介绍： Austral Ecology is the premier journal for basic and applied ecology in the Southern Hemisphere. As the official Journal of The Ecological Society of Australia (ESA), Austral Ecology addresses the commonality between ecosystems in Australia and many parts of southern Africa, South America, New Zealand and Oceania. For example many species in the unique biotas of these regions share common Gondwana ancestors. ESA''s aim is to publish innovative research to encourage the sharing of information and experiences that enrich the understanding of the ecology of the Southern Hemisphere. Austral Ecology involves an editorial board with representatives from Australia, South Africa, New Zealand, Brazil and Argentina. These representatives provide expert opinions, access to qualified reviewers and act as a focus for attracting a wide range of contributions from countries across the region. Austral Ecology publishes original papers describing experimental, observational or theoretical studies on terrestrial, marine or freshwater systems, which are considered without taxonomic bias. Special thematic issues are published regularly, including symposia on the ecology of estuaries and soft sediment habitats, freshwater systems and coral reef fish.