Effects of seasonal changes and depth on growth parameters of the Mediterranean mussel (Mytilus galloprovincialis) on a shipwreck in the Eastern Mediterranean Sea

IF 0.9 4区环境科学与生态学 Q4 OCEANOGRAPHY Oceanological and Hydrobiological Studies Pub Date : 2021-12-01 DOI:10.2478/oandhs-2021-0038

Tuğçe Şensurat-Genç, Onur Karadal, A. Ç. Oruç, Aytaç Özgül, Altan Lök

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引用次数: 1

Abstract

Abstract The study was conducted between July 2018 and May 2020 to compare seasonal changes in growth parameters of the Mediterranean mussel (Mytilus galloprovincialis) at different depths in two different areas of the Northeastern Mediterranean Sea (Aegean Sea). In a preliminary study, mussels were placed in cages at different depths of an artificial reef (AR – shipwreck) and natural reef (NR). Temperature, salinity, pH, and dissolved oxygen were determined seasonally at both sites at a depth of 37 m (deepwater) and 25 m (midwater). Linear increases in length and width of mussels at the AR site were recorded, while no consistent changes were observed for mussels at the NR. There was negative correlation between the specific growth rate (SGR) and salinity (r2 = 0.5098) and temperature (r2 = 0.1470) at the AR site. Negative correlations were also recorded between pH and the commercial condition index (CCI) at both the AR (r2 = 0.3869) and NR (r2 = 0.3600) sites. Our findings show that depth had a significant effect (p < 0.05) on the CCI of mussels at the NR site, while its effect was insignificant for this index at the AR site (p > 0.05). This study indicates that natural reefs provide more suitable conditions for the growth of Mediterranean mussels than shipwrecks used as artificial reefs.

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季节变化和深度对地中海东部沉船事故中地中海贻贝（Mytilus galloprovincialis）生长参数的影响

摘要该研究于2018年7月至2020年5月进行，以比较地中海东北海（爱琴海）两个不同地区不同深度地中海贻贝（Mytilus galloprovincialis）生长参数的季节变化。在一项初步研究中，贻贝被放在人工礁（AR–沉船）和天然礁（NR）不同深度的笼子里。温度、盐度、pH和溶解氧分别在37米（深水）和25米（中水）的两个地点进行季节性测定。记录到AR部位贻贝的长度和宽度呈线性增加，而NR部位的贻贝没有观察到一致的变化。AR部位的比生长速率（SGR）与盐度（r2=0.5098）和温度（r2=0.1470）之间呈负相关。在AR（r2=0.3869）和NR（r2=0.3600）位点的pH和商业条件指数（CCI）之间也记录到负相关。我们的研究结果表明，深度对NR位置贻贝的CCI有显著影响（p<0.05），而对AR位置的这一指数影响不大（p>0.05）。这项研究表明，天然珊瑚礁比用作人工珊瑚礁的沉船为地中海贻贝的生长提供了更合适的条件。

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来源期刊

Oceanological and Hydrobiological Studies 地学-海洋学

CiteScore

1.70

自引率

11.10%

发文量

审稿时长

>12 weeks

期刊介绍： Oceanological and Hydrobiological Studies is an international journal published by the Institute of Oceanography, University of Gdańsk in Poland. The journal has 4 issues per year and contains papers on all aspects of the marine environment and hydrobiology. All manuscripts are reviewed by editors and independent experts. Based on the referees'' recommendations, the Editor will make a decision on whether to accept a contribution. All articles are published in English. The journal is open to all matters concerning the water environment, thus providing the readers with a wide spectrum of topics in every issue.