Bivalve mollusk fauna and ecological groups of Unionidae and Corbiculidae families in natural and artificial reservoirs of Uzbekistan

Kh Boymurodov,S Suyarov

doi:10.1051/e3sconf/202126501014

Abstract

The length of the rivers in Uzbekistan and the presence of all the biotopes in the mollusks have made they a favourable reservoir for the mollusks. However, it should be noted that all species in the rivers differ in their density. Rivers and fishery farms play a great role in formation of bivalve mollusks fauna in the canals. It was studied the fishery farms of the Syrdarya River and its surroundings have a major effect on the fauna of the Mirzachul and South Mirzachul canals; the Zarafshan River’s effect on spreading of bivalve mollusks in the Dargom and Eskiankhor canals; the Amudarya River and its surrounding areas influence of fishery farms on the fauna of the Amu-Bukhara, Kizketgan and Karshi main canals. Colletopterum family breeds in the water studied, do not show any superiority in natural or artificial reservoirs compared to other breeds. Three species of these family are included in the Red Book of the Republic of Uzbekistan (C.baсtrianum, C. cyreum sogdianum, C. kokandicum). C. Bactrianum can be found only in rivers in the middle Zarafshan and Amudarya, in the Syrdarya river (Syrdarya Region only), in the reservoir and in the fishery farms only in Chelak, and the canals only in the Tuyatortar and Mirzachul canals.

Highlights

The demand for biological resources of aquatic ecosystems, in particular, the demand for bivalve mollusks, is increasing year by year worldwide
Regional species composition of bivalve mollusks, their distribution, systematization, scientific works on their protection were conducted by foreign scientists such as James H.Thorp., Alanp Covich; Aldridge; Bouchet; Huber Markus; Bogan; Annabelle Cuttelod and others and research studies on pearls production in the economic sectors, and especially in artificial reservoirs, were conducted by scientists like Maria Haws; Mamangkey and others; Rahayu and others; Sata Yoshida, Srie Rahayu and others
We can observe research studies on the determination of territorial diversity, taxonomic structure and signs of variability in bivalve mollusks in the CIS countries in the works of scientists like Bogatov, Starobogatov; Bogatov; Andreev and others; population status assessment and global invasive species distribution studies were conducted by Alekhina and others; Panov and others; Son; Yanovich]; some research studies on the importance of two-stage clams in determining water pollution levels can be noted among the works of the scientists like Rijinashvili A.L., Sintyurina A.V., Bigaliev A.B., Kuzmenkin D.V

Summary

Introduction

The demand for biological resources of aquatic ecosystems, in particular, the demand for bivalve mollusks, is increasing year by year worldwide. It is important to determine the species composition and possible use of Unionidae and Corbisulidae families, especially those that have a special role in freshwater distribution, especially among bivalve clams.

Results

Conclusion