Comparative Aspects of the Study of Morphophysiological and Biochemical Parameters of Somatic Growth in Populations of Two Species of Black Sea Bivalvia Mollusks: Cerastoderma glaucum and Flexopecten glaber ponticus

IF 0.8 4区生物学 Q4 MARINE & FRESHWATER BIOLOGY

Inland Water Biology Pub Date : 2024-05-24 DOI:10.1134/s1995082924020160

S. A. Shcherban, A. V. Temnykh

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Abstract

The results of an analysis of the morphophysiological and biochemical indicators of somatic growth in Black Sea bivalve mollusks, the cockle Cerastoderma glaucum (Bruguiere, 1789) and the scallop Flexopecten glaber ponticus (Bucguoy, Dautzenberg et Dollfus, 1889), living in the vicinity of Sevastopol, are presented. The examples are of three size-age groups in the length range from 12 to 30 mm for both species; the features of tissue biosynthesis (somatic growth) of soft tissues are studied. According to the total RNA content and the RNA/DNA index in the C. glaucum, it is shown that, in the 17–22 and 23–28 mm groups (age 2–3 years), the level of synthesis of protein structures is 1.3–1.7 times higher than in the underyearlings. In individuals of F. glaber ponticus with linear sizes of 13–17 and 21–24 mm (underyearlings), the level of synthesis of protein structures is 1.2–1.5 times higher than in larger individuals (age 2 years). The species specificity of somatic growth is most significantly manifested in the middle and older size groups of the studied mollusks. The values of biochemical growth parameters in both species indicates an average level of tissue growth in comparison with other previously obtained data for the mass Black Sea bivalves. Linear regression models of size–weight values show that, for both species, the change in size explains 62–86% of the variation in body weight of the mollusk. An analysis of weight parameters (total mass/soft tissue mass) indicates a positive allometry of somatic tissue growth.

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两种黑海双壳类软体动物种群体细胞生长的形态生理学和生物化学参数的比较研究：Cerastoderma glaucum 和 Flexopecten glaber ponticus

摘要本文介绍了对生活在塞瓦斯托波尔附近的黑海双壳类软体动物--魁蚶 Cerastoderma glaucum (Bruguiere, 1789) 和扇贝 Flexopecten glaber ponticus (Bucguoy, Dautzenberg et Dollfus, 1889) 体生长的形态生理学和生物化学指标的分析结果。这两个物种都有三个大小年龄组，长度范围从 12 毫米到 30 毫米；研究了软组织的组织生物合成（体细胞生长）特征。根据 C. glaucum 的总 RNA 含量和 RNA/DNA 指数，17-22 和 23-28 mm 组（2-3 岁）的蛋白质结构合成水平是未满 1 岁幼体的 1.3-1.7 倍。在线形尺寸为 13-17 和 21-24 毫米（未满 1 岁）的苍耳个体中，蛋白质结构的合成水平是较大个体（2 岁）的 1.2-1.5 倍。在所研究的软体动物中，体细胞生长的物种特异性在中大体型组表现得最为明显。这两个物种的生化生长参数值表明，与之前获得的其他黑海大型双壳类动物的数据相比，它们的组织生长处于平均水平。体型-体重值的线性回归模型显示，对于这两个物种，体型的变化可以解释软体动物体重变化的 62-86%。对体重参数（总质量/软组织质量）的分析表明，体表组织的增长呈正异速增长。

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来源期刊

Inland Water Biology 生物-海洋与淡水生物学

CiteScore

1.30

自引率

55.60%

发文量

审稿时长

6-12 weeks

期刊介绍： Inland Water Biology publishes thematic reviews and original papers devoted to flora and fauna in waterbodies, biodiversity of hydrobionts, biology, morphology, systematics, ecology, ethology, ecological physiology and biochemistry of aquatic organisms, patterns of biological cycle, structure and functioning of aquatic ecosystems, anthropogenic and uncontrolled natural impacts on aquatic organisms and ecosystems, invasion of nonindigenous species into ecosystems and their ecology, methods of hydrobiological and ichthyological studies.