Evidence of a predation event on a tagged Mediterranean spearfish (Tetrapturus belone; Pisces, Istiophoridae), inferred from pop-up satellite tagging data

IF 1.5 4区农林科学 Q3 FISHERIES

Aquatic Living Resources Pub Date : 2020-01-01 DOI:10.1051/alr/2020024

D. Malara, P. Battaglia, P. Consoli, Erika Arcadi, S. Canese, S. Greco, F. Andaloro, T. Romeo

引用次数: 1

Abstract

The Strait of Messina is located at the centre of the Mediterranean Sea and is considered a biodiversity hotspot and an obligatory seasonal passage for different pelagic species such as sharks, marine mammals, and billfishes. For the first time, in the Strait of Messina, our research group tagged a Mediterranean spearfish (Tetrapturus belone) using a pop-up satellite archival tag (PSAT). The observation of abiotic parameters (depth, light, and temperature) recorded by the PSAT confirmed that the tagged specimen was predated after about nine hours. The tag was then regurgitated 14 days after the tag deployment date. The analysis of collected data seems to indicate that the predator may be an ectothermic shark, most likely the bluntnose sixgill shark (Hexanchus griseus).

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有标记的地中海矛鱼(Tetrapturus belone;双鱼座，Istiophoridae)，从弹出式卫星标记数据推断

墨西拿海峡位于地中海的中心，被认为是生物多样性的热点，也是不同远洋物种(如鲨鱼、海洋哺乳动物和长嘴鱼)的强制性季节性通道。在墨西拿海峡，我们的研究小组首次使用弹出式卫星档案标签(PSAT)标记了一条地中海矛鱼(Tetrapturus belone)。PSAT记录的非生物参数(深度、光线和温度)的观察证实，标记的标本在大约9小时后提前发生。然后在标签部署日期14天后反吐标签。对收集数据的分析似乎表明，捕食者可能是一种变温鲨鱼，最有可能是钝鼻六鳃鲨(Hexanchus griseus)。

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

Aquatic Living Resources 农林科学-海洋与淡水生物学

CiteScore

2.30

自引率

0.00%

发文量

审稿时长

>24 weeks

期刊介绍： Aquatic Living Resources publishes original research papers, review articles and propective notes dealing with all exploited (i.e. fished or farmed) living resources in marine, brackish and freshwater environments. Priority is given to ecosystem-based approaches to the study of fishery and aquaculture social-ecological systems, including biological, ecological, economic and social dimensions. Research on the development of interdisciplinary methods and tools which can usefully support the design, implementation and evaluation of alternative management strategies for fisheries and/or aquaculture systems at different scales is particularly welcome by the journal. This includes the exploration of scenarios and strategies for the conservation of aquatic biodiversity and research relating to the development of integrated assessment approaches aimed at ensuring sustainable and high quality uses of aquatic living resources.

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