scholarly journals MACROPHYTE-ASSOCIATED MACROINVERTEBRATES OF HETEROGENEOUS WATER BODIES OF THE VOLOGDA REGION, RUSSIA

2021 ◽  
pp. 94-104
Author(s):  
K. Ivicheva ◽  
A. Komarova ◽  
E. Ugryumova ◽  
I. Filonenko
Keyword(s):  
Cluster Analysis ◽  
Species Diversity ◽  
Aquatic Invertebrates ◽  
Trophic Structure ◽  
Abundant Species ◽  
Water Bodies ◽  
Bottom Fauna ◽  
Structure Of Communities ◽  
Potamogeton Perfoliatus ◽  
Macrophyte Species

In august 2018, fauna of aquatic macroinvertabrates from Persicaria amphibia (L.) Delarbre, Butomus umbellatus L. and Potamogeton perfoliatus L. was studied in Kubenskoe Lake as well as in Vozhe Lake and Mologa River in order to compare the phytophilic and bottom fauna of heterogeneous water bodies. Macrophyte-associated invertebrates and samples of zoobenthos in thickens (in total 37 samples were analyzed) were collected. 68 species of aquatic invertebrates were recorded, including 49 species from Kubenskoe Lake, 41 from Mologa River, and 31 from Vozhe Lake. In the thickets of three macrophyte species, less than a third of all macroinvertebrate richness from the investigated water bodies is recorded. The most abundant species were Endochironomus albipennis Meig., Glyptotendipes gripekoveni Kief., Cricotopus gr. sylvestris. By using cluster analysis, the fauna of all biotopes was divided into macrophyte-associated and bottom-associated. The abundance and biomass of invertebrates in zoophytos in most cases is 3–15 times higher than in zoobenthos. In lakes, species diversity in zoophytos is 1.5–5 times lower than in soil. In the Mologa River the species diversity of zoophytos, on the contrary, is slightly higher. In lakes in the trophic structure, filter-collectors predominate. In the Vozhe Lake a high proportion of predators in the biomass is also recorded. In the Mologa River the trophic structure is more various: along with the collector-filterers, scrapers, shredders and predators are represented. In comparison with research of the 1970s, community structure of macrophyte-associated invertebrates in Vozhe Lake has not practically changed. The dominance of E. albipennis was detected in the Kubenskoe Lake and that was not previously indicated for this reservoir. The species composition and abundance of aquatic macroinvertebrates is determined by the type of substrate (soil or plant), while the structure of communities depends primarily on a type of reservoir, and not on a type of thicket.

ON THE ISSUE OF THE SPREAD OF AEROMONAS BACTERIA IN THE ENVIRONMENT AND CLINICAL MATERIAL

2018 ◽  
pp. 54-57
Author(s):  
L.V. Kataeva ◽  
T.F. Stepanova ◽  
O.V. Posoyuznykh ◽  
V.V. Tashlanova ◽  
N.F. Karpukhina ◽  
...  
Keyword(s):  
Antibiotic Resistance ◽  
Species Diversity ◽  
Food Products ◽  
Water Bodies ◽  
Clinical Material ◽  
Seasonal Fluctuations ◽  
Infectious Process ◽  
Biological Safety ◽  
Resistance To Antibiotics ◽  
Environmental Objects

The analysis of cases of detection of bacteria of the genus Aeromonas in clinical material from various loci of patients of medical organizations was carried out. Their species diversity, isolation in monoculture and associations, resistance to antibiotics and spring-autumn rises indicate the etiological significance of these microorganisms in the infectious process. To improve the biological safety of aquatic biotopes, it is important to study their microbiocenosis, in particular, the circulation of bacteria of the genus Aeromonas, in order to obtain information on pathogenic properties, antibiotic resistance, and seasonal fluctuations. To prevent the spread of Aeromonas infections, it is necessary to carry out sanitary and bacteriological studies of water bodies, environmental objects and food products.

Carabidae (Coleoptera) in Nova Scotia, Canada wild blueberry fields: prospects for biological control

2012 ◽  
Vol 144 (6) ◽  
pp. 779-791 ◽  
Author(s):  
G.C. Cutler ◽  
J.M. Renkema ◽  
C.G. Majka ◽  
J.M. Sproule
Keyword(s):  
Biological Control ◽  
Nova Scotia ◽  
Species Diversity ◽  
Insect Pests ◽  
Abundant Species ◽  
Conservation Biological Control ◽  
Carabid Beetles ◽  
Eastern Canada ◽  
Wild Blueberries ◽  
Wild Blueberry

AbstractThe Carabidae (Coleoptera) are a diverse family of beetles with almost 300 species identified in Nova Scotia, Canada. Carabid beetle communities have been studied in several agricultural systems, but not wild blueberries, an important crop in eastern Canada. In the interest of potentially developing conservation biological control programs in wild blueberry, we collected Carabidae in crop (fruit-bearing) and sprout (vegetative) blueberry fields in Nova Scotia in order to assess species diversity and abundance over space and time. Over 3200 specimens were collected, representing 51 species. A large portion of collected specimens (39%) were nonnative, and the most abundant species were generally predacious and synanthropic. Species diversity tended to be higher near forest edges than further into fields, but not for all abundant species. Several of the most prominent predators showed significant differences in preference of crop versus sprout fields, distribution throughout fields, and seasonable abundance. These findings have implications for conservation biological control efforts with carabid beetles against several insect pests in wild blueberry.

scholarly journals Bat diversity of Ilha da Marambaia, Southern Rio de Janeiro State, Brazil (Chiroptera, Mammalia)

2010 ◽  
Vol 70 (3) ◽  
pp. 511-519 ◽  
Author(s):  
EC. Lourenço ◽  
LM. Costa ◽  
RM. Silva ◽  
CEL. Esbérard
Keyword(s):  
Rio De Janeiro ◽  
Abundant Species ◽  
Water Bodies ◽  
Abundance Patterns ◽  
Molossus Molossus ◽  
Bat Diversity ◽  
Janeiro State

Few sites have been well sampled for bats, and samplings in islands are even scarcer. Therefore, the objectives of the present study were: (1) to list the bat species of Ilha da Marambaia; (2) to compare richness, abundance and biomass of bat guilds found there; (3) to analyse abundance patterns of bat species; and (4) to compare richness, abundance and composition of the bat fauna among different kinds of environment. To capture bats we used mist nets set in five different environments, totalising 3559.2 net-hours, during 37 nights between October 2006 and August 2008. A total of 1,133 captures were accomplished, comprising 34 species from five families. The most abundant species was Molossus molossus. Frugivorous bats exhibited higher richness, abundance and biomass if compared to other guilds. Most species (N = 22) exhibited abundances between 1 to 10% of all captures. Sixteen species were restricted to just one of the environments sampled. The high richness may be attributed to sampling carried out in several environments, and to the capture of insectivorous species over water bodies.

scholarly journals WATER MITES (ACARIFORMES: HYDRACHNIDIA, HALACAROIDEA) OF BOGS OF WESTERN SIBERIA (RUSSIA)

2018 ◽  
Vol 18 ◽  
pp. 102-109 ◽  
Author(s):  
Vitaly A. Stolbov ◽  
Victoria V. Popova ◽  
Sergei D. Sheikin ◽  
Sergei S. Tupitsyn
Keyword(s):  
Species Diversity ◽  
Species Composition ◽  
Seasonal Dynamics ◽  
Western Siberia ◽  
Water Bodies ◽  
Water Mites ◽  
Sphagnum Bogs ◽  
Temporary Water Bodies ◽  
Temporary Water

Water mites (Acariformes, Hydrachnidia, Halacaroidea) were studied in 8 different bogs and fens of Western Siberia. 28 species of Hydrachnidia and 5 species of Halacaridae were found in them. The species composition in the bogs was very different. In the fens the abundance and species diversity were higher than in sphagnum bogs and the fauna were based on spring species. The representatives of the halacarid mites dominated in sphagnum bogs, which were not found in the fens. The specific similarity of the studied bogs was low. At the same time, the peculiarities of seasonal dynamics in bogs and fens were similar and resembled temporary water bodies: high numbers in the spring and an abruptly decline in the summer, with a slight increase in autumn.

scholarly journals The macrozoobenthos under clam farm (the Black Sea, Sevastopol region)

2018 ◽  
Vol 3 (1) ◽  
pp. 9-22 ◽  
Author(s):  
N. A. Boltacheva ◽  
M. V. Makarov ◽  
L. V. Bondarenko ◽  
M. A. Kovaleva
Keyword(s):  
Species Diversity ◽  
Species Composition ◽  
Black Sea ◽  
Rare Species ◽  
Trophic Structure ◽  
Bivalve Mollusk ◽  
The Black Sea ◽  
Density And Biomass

During 2015–2106 the macrozoobenthos under the clam farm located in the area of Sevastopol was investigated. The aim of the study is to consider species composition, density and biomass of macrozoobenthos in the area of the clam farm. The samples were taken using standard benthic techniques. Relatively low species diversity was observed, with 56 species of macrozoobenthos identified. The density was 500–975 ind. per m², the biomass varied from 0.8 to 381.1 g·m-2. The community of the bivalve mollusk Lucinella divaricata (Linnaeus, 1758) was found. Trophic structure of the community with high quantity of detritus feeders dominated by small polychaetes was determined. The dominating, typical and rare species were identified. Comparison with the data obtained in 1957 in Evpatoriya – Sevastopol area at the same depths and sediments was made.

scholarly journals GENETIC IDENTIFICATION OF AQUATIC INVERTEBRATES OF KAZAKHSTAN AS INDICATORS OF ORGANIC POLLUTANTS

2018 ◽  
pp. 139-148
Author(s):  
Alexandr Anatoljevich Volkov ◽  
Larisa Anatoljevna Kovaljova ◽  
Tatjana Timofeevna Troshina ◽  
Zhanara Omirbekovna Mazhibaeva ◽  
Dmitrij Valerjevich Pilin ◽  
...  
Keyword(s):  
Dna Barcoding ◽  
Phylogenetic Trees ◽  
Aquatic Invertebrates ◽  
Species Abundance ◽  
Ecological Status ◽  
Taxonomic Status ◽  
Organic Pollution ◽  
Water Bodies ◽  
Genetic Identification ◽  
Morphological Identity

The article deals with carrying out DNA barcoding of aquatic invertebrates of Kazakhstan to identify their taxonomic status as organic pollution indicators. 33 species of the Balkhash-Alakol basin and the Zhayik river were analyzed. 21 species correlate (95-100%) with previously published sequences of invertebrates with well-known classifications in the GenBank and BOLD databases. The taxonomic discrepancy in morphometric and genetic parameters in certain species has been revealed. The discrepancy may be caused by the morphological identity in chironomids at a larval stage. The phylogenetic trees of the investigated species within the families Chironomidae and Moinidae have been indicated. Chironomids are represented by ten clades of different types of genetic polymorphism of DNA gene. Genetic links of Moinidae are detected in four groups including a cryptic species from Lake Alakol. It has been stated that in distribution of cryptic taxons in Moina family factors of salinity and depth of the lake are important, as well as differences in depth. Molecular DNA-barcoding of invertebrates of Kazakhstan should be continued with covering a greater number of species and several replications, with qualified primary fixation of subjects of research and a sufficient number of samples. Authenticity of composition defining, species abundance, species characteristics of aquatic invertebrates from the water bodies of poorly explored arid regions is necessary for using them as indicators of the ecological status of water bodies.

scholarly journals Species Composition Features of Zoopankton in Mineralized Water Bodies from Specially Protected Natural Territories in Ulug-Khem Basin (Republic of Tuva)

2021 ◽  
pp. 398-414
Author(s):  
A. К. Kirova
Keyword(s):  
Species Diversity ◽  
Species Composition ◽  
Brackish Water ◽  
Anthropogenic Impact ◽  
Water Bodies ◽  
Natural Objects ◽  
Mineralized Water ◽  
The Status ◽  
Favorable Conditions ◽  
Specially Protected Natural Territories

The species composition of zooplankton in mineralized water bodies located in the Ulug-Khem basin (Republic of Tuva) was studied. These lakes have the status of natural monuments of regional significance. In total we recorded 53 species of microscopic Custaceans and Rotifers from 32 genera, 13 families, and 8 orders. Cladocera comprises 53% of the species. The dependence of the species diversity on the level of mineralization was revealed; 89% of the species were found in brackish water bodies. The zooplankton composition of the hyperhaline lakes Dus-Khol (Svatikovo) and Cheder has remained constant for many dozen years. The zooplankton includes some species known only from Republic of Tuva in Russia, namely, Microcyclops afganicus and Macrotrix tabrizensis. M. asiaticus and Alona irinae, rare for the fauna of Russia, live in the lake Haak-Hol. A decrease in the total numbers of zooplankton is observed in the lakes, namely: in the lake Dus-Khol, it has decreased by 4 times, in the lake Khadyn it has decreased by 10–19 times as compared to the middle of the last century. Despite the lack of intermediate information, we regard this as a consequence of anthropogenic impact. The emergence of an indicator of pollution (Brachionus nilsoni) in the lake Khadin confirms this version. At the same time, the stable finding of species rare for the fauna of Russia indicates the presence of favorable conditions for their development and life, which increases the value of the reservoirs themselves, which are already unique natural objects.

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