Age, growth and otolith morphometrics of Serranus hepatus (L., 1758) in two areas of the Eastern Mediterranean

IF 1.1 4区生物学 Q3 MARINE & FRESHWATER BIOLOGY

Journal of the Marine Biological Association of the United Kingdom Pub Date : 2023-08-01 DOI:10.1017/S0025315423000474

Vasiliki Nikiforidou, E. Gkikas, C. Mytilineou, J. Haralabous, D. Koutsoubas, A. Anastasopoulou

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引用次数: 1

Abstract

Abstract Serranus hepatus is a bycatch species in the Mediterranean trawl fishery for which knowledge on biological features such as otolith morphology is generally poor in the Mediterranean Sea. In the present study, the weight–length relationship, age, growth and ten otolith morphometric variables of this species were investigated in two distant areas, the Eastern Ionian and southwestern Aegean Seas. Isometric growth in weight was defined in both areas. Growth parameters also did not differ between the two study areas. Six of the otolith variables (radius, otolith length, otolith width, otolith area, perimeter and ellipticity) showed a significant relationship with size without significant differences between the two areas. Significant differences between the two areas were only defined for five of the morphometric variables (otolith length, width and area being the most important). Further studies to discriminate between potential stocks of S. hepatus seem to be necessary, information that is needed for stock identification, stock assessment and fisheries management.

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东地中海两个地区肝Serranus hepatus（L.，1758）的年龄、生长和耳石形态计量学

摘要肝Serranus hepatus是地中海拖网渔业中的一种副渔获物，其耳石形态等生物学特征在地中海普遍缺乏了解。在本研究中，在爱奥尼亚海东部和爱琴海西南部这两个遥远的地区调查了该物种的重量-长度关系、年龄、生长和十个耳石形态计量变量。在这两个领域都定义了体重的等距增长。两个研究区域的生长参数也没有差异。六个耳石变量（半径、耳石长度、耳石宽度、耳石面积、周长和椭圆度）显示出与大小的显著关系，而两个区域之间没有显著差异。两个区域之间的显著差异仅针对五个形态计量变量（耳石长度、宽度和面积是最重要的）进行了定义。似乎有必要进行进一步的研究，以区分肝吸虫的潜在种群，这是种群识别、种群评估和渔业管理所需的信息。

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

Journal of the Marine Biological Association of the United Kingdom 生物-海洋与淡水生物学

CiteScore

2.30

自引率

8.30%

发文量

审稿时长

3-8 weeks

期刊介绍： JMBA is an international journal, publishing original research on all aspects of marine biology. It includes pioneering work taking place today on major issues concerning marine organisms and their environment. Subjects covered include: ecological surveys and population studies of marine communities; physiology and experimental biology; taxonomy, morphology and life history of marine animals and plants; and chemical and physical oceanographic work. Included with 2010 online subscriptions: Marine Biodiversity Records.