深入研究地中海东部土耳其南部入侵河豚的生物学、营养生态学和可捕捉性

IF 0.8 4区 生物学 Q4 MARINE & FRESHWATER BIOLOGY
Hasan Ersönmez, Caner Enver Özyurt, Sinan Mavruk, T. Yıldız, Aylin Ulman
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引用次数: 0

摘要

银颊蟾鱼(Lagocephalus sceleratus)是最令人担忧的入侵物种。必须控制其数量,以减轻其对海洋生态系统、渔民、渔业和人类健康的负面影响。本研究深入调查了2017年3月至2018年2月期间土耳其Finike的L. sceleratus种群的生物学、饮食和可捕获性,以便更好地管理其入侵。本研究共采样 751 个标本,男女比例为 1.25/1。该物种在三岁半时性成熟,雄鱼的 Lm50 为 41.39 厘米,雌鱼的 Lm50 为 42.08 厘米。它在该地区的产卵季节为 6 月至 8 月,7 月达到高峰。春季以甲壳类为主食,夏季以鱼类为主食,冬季鱼类和甲壳类兼食。该物种大量捕食其他河豚物种,占其鱼类食物的四分之一以上。河豚的营养级为 4.41,表明它确实是地中海东部的顶级食肉动物。在约 10%的鱼体内发现了摄入的渔具部件,如网片和鱼钩。对延绳钓稍加改动,使用钢制支线和转钩后,单位努力量的捕获量比标准延绳钓高出一倍,因此这种技术可用于锁定和控制更多的这种入侵物种,这也是国家优先考虑的问题。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
An in-depth study of the biology, trophic ecology and catchability of the invasive pufferfish Lagocephalus sceleratus from southern Turkey, eastern Mediterranean Sea
The silver-cheeked toadfish (Lagocephalus sceleratus) is an invasive species of highest concern. Its population must be controlled to mitigate its negative impacts on marine ecosystems, fishers, fisheries and human health. This study thoroughly investigates the biology, diet and catchability of the L. sceleratus stock from Finike, Turkey from March 2017 to February 2018 in order to better manage its invasion. A total of 751 specimens were sampled for this study with a M/F ratio of 1.25/1. The species becomes sexually mature at three and a half years of age, and Lm50 was 41.39 cm for males and 42.08 cm for females. Its spawning season in this region was from June to August, peaking in July. Its diet was mostly crustaceans in spring, fish in summer and both fish and crustaceans in winter. This species consumed a large amount of other pufferfish species, resulting in over a quarter of its fish diet. The trophic level of L. sceleratus was 4.41, demonstrating that it is indeed a top predator carnivore in the eastern Mediterranean Sea. Ingested fishing gear parts such as net pieces and hooks were found in about 10% of the fish. A slight modification of longlines using steel branch lines and a swivel hook resulted in double the catch per unit effort than standard longlines, so this technique can be used to target and control more of this invasive species, which is a national priority.
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来源期刊
Scientia Marina
Scientia Marina 生物-海洋与淡水生物学
CiteScore
2.10
自引率
0.00%
发文量
21
审稿时长
6-12 weeks
期刊介绍: Scientia Marina is the successor to Investigación Pesquera, a journal of marine sciences published since 1955 by the Institut de Ciències del Mar de Barcelona (CSIC). Scientia Marina is included in the Science Citation Index since 1998 and publishes original papers, reviews and comments concerning research in the following fields: Marine Biology and Ecology, Fisheries and Fisheries Ecology, Systematics, Faunistics and Marine Biogeography, Physical Oceanography, Chemical Oceanography, and Marine Geology. Emphasis is placed on articles of an interdisciplinary nature and of general interest.
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