入侵蓝蟹(Callinectes sapidus)对马尼拉蛤(Ruditapes philippinarum)的摄食策略:对水产养殖的启示

IF 2.6 3区 地球科学 Q1 MARINE & FRESHWATER BIOLOGY
Marco Boschiero, Chiara Facca, Francesco Cavraro, Matilde Tonolli, Stefano Malavasi, Piero Franzoi
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引用次数: 0

摘要

马尼拉蛤(Ruditapes philipparum)已成为北亚得里亚海泻湖的重要水产养殖资源。近年来,入侵的蓝蟹(Callinectes sapidus)迅速蔓延,已成为蛤蜊养殖的主要威胁。通过两个对照实验,研究了蓝蟹对蛤蜊种子(15-30 mm)、商品蛤蜊(30-40 mm)和较大个体(40 mm)的摄食策略。第一个实验在24小时内评估摄食率,而第二个实验通过焦点采样和视频记录来分析处理行为。结果表明,小蛤被捕食的频率更高,雄性比雌性更活跃。“粉碎”打开技术主要用于较小的蛤蜊,而更耗时的“Dactyl”打开技术用于较大的猎物。这些发现强调了种子蛤的脆弱性,并强调了迫切需要采取管理措施来减少养殖环境中蓝蟹的捕食。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Feeding strategies of the invasive blue crab (Callinectes sapidus) on manila clam (Ruditapes philippinarum): Implications for aquaculture

Feeding strategies of the invasive blue crab (Callinectes sapidus) on manila clam (Ruditapes philippinarum): Implications for aquaculture
The Manila clam (Ruditapes philippinarum) has become a key aquaculture resource in the Northern Adriatic lagoons. In recent years, the rapid spread of the invasive blue crab (Callinectes sapidus) has emerged as a major threat to clam farming. This study investigated blue crab feeding strategies on clam seed (15–30 mm), marketable clams (30–40 mm), and larger individuals (>40 mm) through two controlled laboratory experiments. The first experiment assessed feeding rates over a 24-h period, while the second analyzed handling behaviour using focal sampling and video recording. Results show that small clams were more frequently consumed, with males preying more actively than females. The 'Crushing' opening technique was predominantly used on smaller clams, while the more time-consuming 'Dactyl' opening technique was used for larger prey. These findings highlight the vulnerability of seed clams and underline the urgent need for management measures to mitigate predation by blue crabs in aquaculture settings.
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来源期刊
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.
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