根据Trichonis湖（西希腊）的商业和实验渔获物估算的沙胡蝶（Risso，1810）的长重关系和条件因子

IF 1 4区生物学 Q3 MARINE & FRESHWATER BIOLOGY

Acta Adriatica Pub Date : 2021-12-22 DOI:10.32582/aa.62.2.8

Alexandra S. Douligeri, Ioanna Tsionki, O. Petriki, Dimitrios K. Moutopoulos, M. Stoumboudi

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引用次数: 1

摘要

在2019-2020年期间，使用商业环网和实验性北欧型底栖和中上层多目刺网，估计了在Trichonis湖（西希腊）捕获的3583只博氏阿瑟纳鱼（Risso，1810）个体的总长重关系（LWR）。参数b在所有季节的组合变化都是显著的异速性的，对于环网和刺网，具有相当稳健的拟合（R^2分别等于0.925和0.947），值分别等于2.254和2.089。夏季的标本明显比其他季节的轻。LWR的斜率在不同季节之间存在显著差异，与世界各地和前一时期同一生态系统中的其他生态系统相比，其值相对较低。Le Cren指数的估计值显著高于Allometric指数和Fulton指数。

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Length-weight relationships and condition factors of the sand smelt Atherina boyeri (Risso, 1810) estimated from commercial and experimental catches in Lake Trichonis (Western Greece)

Total length-weight relationships (LWRs) from 3583 individuals of Atherina boyeri (Risso, 1810) caught in Lake Trichonis (Western Greece), using a commercial encircled net and experimental Nordic type benthic and pelagic multi-mesh gillnets, were estimated during 2019-2020. The variation of the parameter b for all seasons combined was significantly allometric, for both encircled towed and gillnets, with a quite robust fit (R^2 equals 0.925 and 0.947, respectively) and values equal to 2.254 and 2.089, respectively. The specimens were significantly lighter in summer than in the other seasons. The slopes of the LWRs significantly differ between seasons and exhibited relatively low values when compared to other ecosystems worldwide and in the same ecosystem in previous periods of time. Τhe estimated values of the Le Cren index were significantly higher than the Allometric and the Fulton ones.

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来源期刊

Acta Adriatica 生物-海洋与淡水生物学

CiteScore

1.60

自引率

11.10%

发文量

审稿时长

>12 weeks

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