里海伊朗水域大鲟鱼(Huso Huso)的人口统计(2008-2010)

IF 0.9 4区环境科学与生态学 Q4 OCEANOGRAPHY

Oceanological and Hydrobiological Studies Pub Date : 2021-09-01 DOI:10.2478/oandhs-2021-0027

S. Bakhshalizadeh, A. Bani, S. Abdolmalaki, J. P. Ponce Palafox

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引用次数: 1

摘要

摘要伊朗里海沿岸水域的大鲟鱼Huso Huso的人口统计数据来源于商业渔业中对叉长在84至255厘米之间的个体的测量。在里海南部捕获的鱼的最大年龄为30岁。渐近长度L∞和生长系数（K）的估计值，雄性分别为265.255厘米和0.062厘米/年，雌性分别为275.78厘米和0.08厘米/年。通过Gulland方法获得的总死亡率男性（0.64）大于女性（0.46）。年死亡率男性为47%，女性为37%。这项研究中获得的数据以及与以往研究数据的比较表明，大鲟鱼种群肯定是以不可持续的方式被开发的。

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Demographics of great sturgeon (Huso huso) in Iranian waters of the Caspian Sea (2008–2010)

Abstract Demographic data of the great sturgeon, Huso huso, from the Iranian coastal waters of the Caspian Sea were derived from measurements of individuals with a fork length ranging from 84 to 255 cm, obtained from commercial fisheries. The maximum age of fish caught in the south Caspian Sea was 30 years. The estimates of the asymptotic length L∞ and the growth coefficient (K) were 265.255 cm and 0.062 per year for males and 275.78 cm and 0.08 per year for females, respectively. Total mortality rates obtained by Gulland's method were larger for males (0.64) than for females (0.46). Annual mortality rates were calculated as 47% for males and 37% for females. Data obtained in this study and their comparison with data from previous studies indicate that the great sturgeon stock is definitely exploited in an unsustainable manner.

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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.