Microsatellites reveal weak genetic differentiation between Rutilus frisii kutum (Kamenskii, 1901) populations south of the Caspian Sea

2011 ◽  
Vol 61 (4) ◽  
pp. 469-483 ◽  
Author(s):  
Mohammad Rezaei ◽  
Bahare Shabanpour ◽  
Ali Shabani ◽  
Hadis Kashiri
Keyword(s):  
Genetic Diversity ◽  
Genetic Differentiation ◽  
Caspian Sea ◽  
Current Knowledge ◽  
Genetic Management ◽  
The Caspian Sea ◽  
Expected Heterozygosity ◽  
Artificial Breeding ◽  
Genetic Stocks ◽  
Rutilus Frisii Kutum

Abstract Rutilus frisii kutum (Kamenskii, 1901) is one of the most important bony fish inhabiting the Caspian Sea. The Iranian Fisheries Organization produced up to 200 million fry to restock the Caspian Sea population annually. Loss of genetic stocks and gradual depletion of the gene pool are parameters of great concern for the future of the species. In the present study, we used ten microsatellite markers to estimate the level of genetic diversity and compare the degree of genetic differentiation among kutum populations collected from Gharesou, Tajan and Goharbaran rivers in the south of Caspian Sea. The average number of alleles per locus ranged from 4 to 12.33, while the average observed and expected heterozygosity ranged from 0.22 to 1.00 and from 0.69 to 0.88, respectively. Through AMOVA, a low level of variation between regions as well as a large percentage of total variation within population was observed. Current knowledge about artificial breeding suggests that offspring transfer between rivers has probably reduced the natural divergence naturally exists between these pools. These results could be useful for the genetic management of kutum populations.

scholarly journals Dynamic genetic diversity and population structure of Coreius guichenoti

ZooKeys ◽  
2021 ◽  
Vol 1055 ◽  
pp. 135-148
Author(s):  
Dongqi Liu ◽  
Feng Lan ◽  
Sicai Xie ◽  
Yi Diao ◽  
Yi Zheng ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Mitochondrial Dna ◽  
Population Structure ◽  
Genetic Differentiation ◽  
Yangtze River ◽  
Fish Passage ◽  
The Yangtze River ◽  
Artificial Breeding ◽  
Significant Difference ◽  
High Elevations

To investigate the genetic effects on the population of Coreius guichenoti of dam constructions in the upper reaches of the Yangtze River, we analyzed the genetic diversity and population structure of 12 populations collected in 2009 and 2019 using mitochondrial DNA (mtDNA) control regions. There was no significant difference in genetic diversity between 2009 and 2019 (P > 0.05), but the population structure tended to become stronger. Genetic differentiation (FST) among five populations (LX, BB, YB, SF and JA) collected in 2009 was not significant (P > 0.05). However, some populations collected in 2019 were significantly differentiated (P < 0.05), indicating that the population structure has undergone change. A correlation analysis showed that the genetic diversity of the seven populations collected in 2019 was significantly negatively correlated with geographical height (r = −0.808, P = 0.028), indicating that the populations at high elevations were more vulnerable than those at low elevations. In order to prevent the further decrease of genetic diversity and population resources, some conservation and restoration suggestions, such as fish passage and artificial breeding, are put forward.

Evaluation of genetic diversity of Rubus hyrcanus using Inter Simple Sequence Repeat (ISSR) and morphological markers

Biologia ◽  
2015 ◽  
Vol 70 (3) ◽  
Author(s):  
Ehsan Sedighi ◽  
Mehdi Rahimmalek
Keyword(s):  
Genetic Diversity ◽  
Caspian Sea ◽  
Gene Diversity ◽  
Inter Simple Sequence Repeat ◽  
Morphological Markers ◽  
The Caspian Sea ◽  
Geographical Regions ◽  
North Eastern ◽  
North Western ◽  
Simple Sequence

AbstractRubus hyrcanus is considered as an important wild blackberry species scattered around the Caspian Sea. In this research, ISSR and morphological markers were used to assess genetic diversity in several populations of R. hyrcanus from various geographical regions of Caspian Sea in Iran. Twenty-five populations of R. hyrcanus from three regions (North- Western (NW), North- Eastern (NE) and Central (C)) and one population from R. discolor were applied in this research. Ten primers were used to amplify bands out of which 157 (77.13%) were polymorphic. Cluster and Principle coordinate analyses (PCoA) showed the higher similarity of NE and NW populations. Analysis of molecular variance (AMOVA) revealed that the differences among three collection regions only accounted for 28.09% of the total variation, whereas differences among populations within groups were 66.03%. Analyses among three regions showed that the minimum gene diversity over loci was observed in NW (0.16) and NE (0.17), while the highest one was found in C (0.238) region. Furthermore, narrow genetic base and relatively high genetic differentiation obtained for studied R. hyrcanus genotypes. The results of morphological analysis in most cases corresponded to those obtained through molecular analyses.

scholarly journals Contribution of the researchers of the Department of Ichthyology and Hydrobiology of Saint-Petersburg State University to the conservation of the Caspian sturgeon population

2019 ◽  
Vol 323 (4) ◽  
pp. 498-505
Author(s):  
R.P. Khodorevskaya
Keyword(s):  
Caspian Sea ◽  
Physiological State ◽  
Biological Indicators ◽  
Commercial Fishing ◽  
Caspian Basin ◽  
State University ◽  
The Caspian Sea ◽  
Saint Petersburg ◽  
Current State ◽  
Artificial Breeding

The paper deals with the main historical moments of the Caspian sturgeon population dynamics and the formation of their stocks. The participation of researchers of the Department of Ichthyology and Hydrobiology of Saint-Petersburg State University in creating the concept of sturgeon conservation in the Caspian Sea and the specialized institute of sturgeon farming in Astrakhan was highly appreciated. The materials on the contribution of the Department’s researchers to the study of the physiological state of sturgeon producers, improving their quality, survival and safety in the conditions of artificial breeding of these species are presented. The data on the reduction of the sturgeon abundance reared and released into the Caspian Sea by the Caspian littoral states are presented. A description of the current state of the sturgeon of the Caspian basin is given. The data on changes in stocks, the structure of the spawning part of the population and reproduction of the beluga, Russian sturgeon and stellate sturgeon in the Volga-Caspian basin under the conditions of the prohibition of their commercial fishing are analyzed. It was shown that during the years of the ban, the abundance and stocks of sturgeon and biological indicators of breeding migrants to spawn in the Volga continued to decrease and the proportion of females among them, which is associated with the illegal catch of sturgeon, comparable in scale to the commercial fishery before the ban was introduced. Reduced natural (up to its complete cessation in the Beluga) and artificial reproduction of sturgeons are stated. Only observing the moratorium on sturgeon fishing in all the Caspian littoral states, strengthening the protection of fish at feeding grounds and spawning migrations can preserve and restore their unique Caspian populations.

scholarly journals Evaluation of DNA polymorphism among cultivated and wild grapevine accessions from Azerbaijan

2010 ◽  
Vol 46 (No. 2) ◽  
pp. 75-84 ◽  
Author(s):  
S. Salayeva ◽  
E. Akhundova ◽  
A. Mammadov
Keyword(s):  
Genetic Diversity ◽  
Caspian Sea ◽  
Wild Population ◽  
Rapd Analysis ◽  
Diversity Index ◽  
Genetic Relationships ◽  
Similarity Index ◽  
The Caspian Sea ◽  
Wild Grape ◽  
Wild Grapevine

To estimate genetic relationships among 31 cultivated and 34 wild grape accessions originating from regions near the Caspian Sea in the Azerbaijan Republic, RAPD analysis was performed with 27 decamer primers selected from a total of 55 primers. The most discriminating primers were OPC-16, OPF-18 and OPA-17, which showed the highest values of genetic diversity (0.927, 0.914 and 0.909, respectively). The lowest values of diversity pertained to the markers OPA-1 (0.615) and V-20 (0.624). The cluster analysis representing genetic similarity among all selected samples divided the genotypes into nine separate groups at similarity index 0.508. Within the studied Azerbaijan grape populations the highest genetic diversity belonged to the population of cultivated samples originating from the Absheron peninsula, with a diversity index 0.852 and the next ranks were assigned to the wild populations originating from Nabran and Guba regions, with a diversity index 0.824 and 0.793, respectively. The lowest diversity was observed within Davachi individuals, with a diversity index 0.765. The wild population from Azerbaijan was molecularly similar to the cultivated gene pool from this area. This result supported the hypothesis that the southwest of the Caspian Sea is a region where grape was brought into culture. During the analysis a special band was observed which could be used in identifying wild and cultivated grape accessions with high or low resveratrol content. The results of this work clearly indicated that the RAPD analysis can be used to estimate genotypic similarities, genetic diversity and for clustering cultivated and wild grape accessions.

The genetic diversity of the genus Mus (Linnaeus, 1758) in the eastern part of the North Caucasus

BMC Zoology ◽  
2021 ◽  
Vol 6 (1) ◽  
Author(s):  
Fatimat Tembotova ◽  
Ekaterina Kuchinova ◽  
Albina Amshokova ◽  
Ekaretina Kononenko
Keyword(s):  
Genetic Diversity ◽  
Caspian Sea ◽  
North Caucasus ◽  
The Caspian Sea ◽  
Mt Dna ◽  
The Caucasus ◽  
Nucleotide Variability ◽  
The North ◽  
History Of ◽  
First Time

Abstract Background There are two species of Mus in the Caucasus: M. musculus and M. macedonicus. M. musculus is widespread in the Caucasus, where the species is found everywhere from the Black to the Caspian Sea. M. macedonicus is ubiquitous Transcaucasia. The most north-astern border of its distribution in the Caucasus, according to the literature, is located in the Derbent region, near the border between Dagestan and Azerbaijan. Results Cytochrome b mt-DNA of genus Mus research in this study in the Eastern Caucasus. About 70% of M. musculus haplotypes from the lowlands of Dagestan were recorded for the first time. One of these haplotypes accounts for approximately 25% of the total species diversity of haplotypes. M. macedonicus was found in only one locality, the Sarykum barchans, where this species prevails in number and accounts for 70% of the total number mice of the genus Mus. The species is characterized by low values of genetic diversity and nucleotide variability, which may indicate that the population originated from a small number of founders and may explain its relative isolation from the main range. The dating of the appearance of the ancestors of M. musculus in the east of the Russian Caucasus corresponds to 99-66 thousand years ago (at a mutation rate of 3-10% per million years). Conclusion The results obtained suggest that the history of the appearance of M. musculus in the Eastern Caucasus is more ancient and is not associated with human agricultural activities. We believe that possibly the ancestral range of M. musculus covered the eastern and western coasts of the Caspian Sea in the territory of southern Dagestan, Azerbaijan, and Iran. In this paper M. macedonicus, a Balkan-Asia Minor species, was registered for the first time in the North Caucasus. This species was registered in the center of Dagestan, where it inhabits sympatrically (on the territory) and syntopically (on the same biotope) with M. musculus. The low values of genetic diversity of M. macedonicus in the North Caucasus suggest that the population originated from a small group of founders.

Modeling habitat preferences of Caspian kutum, Rutilus frisii kutum (Kamensky, 1901) (Actinopterygii, Cypriniformes) in the Caspian Sea

Hydrobiologia ◽  
2015 ◽  
Vol 766 (1) ◽  
pp. 103-119 ◽  
Author(s):  
Ali Haghi Vayghan ◽  
Rahmat Zarkami ◽  
Roghayeh Sadeghi ◽  
Hasan Fazli
Keyword(s):  
Caspian Sea ◽  
Habitat Preferences ◽  
The Caspian Sea ◽  
Rutilus Frisii Kutum
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