Pub Date : 2023-12-19DOI: 10.1134/s1995082923060135
G. Kumar, A. Kashyap, M. Serajuddin
Abstract
Morphological variations of the Asian sheat catfish, Wallago attu (Bloch and Schneider, 1801) sampled from the rivers Gomti, Ganga, Yamuna at Lucknow, Kanpur and Agra districts in Northern India, river Hooghly at Kolkata in Eastern India and river Pampa at Kerala in Southern India were analyzed in the present study. Images of 261 specimens of W. attu were taken without harming the fish to evaluate the morphometric variation using 8 digitized homologous landmarks for truss analysis and geometric morphometrics. Size corrected morphometric variables were analyzed using analysis of variance (ANOVA), multivariate analysis of variance (MANOVA), principal component analysis (PCA) and discriminant function analysis (DFA). Coefficients of all PCs were positively and negatively correlated to 31 significant (p < 0.001) truss measurements due to variations in size and shape. Morphometric measurements lying in the head region such as head length (HL), eye diameter (ED), inter-orbital length (IOL) and snout length (SNL) contributed most to differentiate the populations in truss analysis. The ED, HL, SNL and IOL of Yamuna fish was significantly (p < 0.001) smaller than the other fish populations. This could be attributed to the heavy pollution load in the Yamuna River and differences in the feeding regimes of fish. PCs and relative warps depicted differences in geometric analysis because of body shape variations among different river populations. The scatter plot in DFA revealed the presence of three distant and different phenotypic groups of W. attu among five wild river populations of fish with 70.5% and 83.9% of correct classification of fish into their original groups in truss and geometric analysis respectively. A single homogenous stock of fish was found to be in the rivers Gomti, Ganga and Hooghly because of a high level of intermixing (maximum misclassification) among the three river populations, whereas Yamuna and Pampa populations were two non-overlapping isolated groups due to negligible intermixing. These variations in the present study might be the effect of geographical isolation and river fragmentation due to the change in habitat that restricts fish movements. This is the first report on the morphometric assessment of W. attu that provides base line data for further confirmatory stock studies that would be useful for conservation and sustainable management of this vulnerable fish.
{"title":"Assessment of Morphometric Variations among the Populations of Asian Sheat Catfish Wallago attu (Siluridae) from Five Indian Rivers","authors":"G. Kumar, A. Kashyap, M. Serajuddin","doi":"10.1134/s1995082923060135","DOIUrl":"https://doi.org/10.1134/s1995082923060135","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>Morphological variations of the Asian sheat catfish, <i>Wallago attu</i> (Bloch and Schneider, 1801) sampled from the rivers Gomti, Ganga, Yamuna at Lucknow, Kanpur and Agra districts in Northern India, river Hooghly at Kolkata in Eastern India and river Pampa at Kerala in Southern India were analyzed in the present study. Images of 261 specimens of <i>W. attu</i> were taken without harming the fish to evaluate the morphometric variation using 8 digitized homologous landmarks for truss analysis and geometric morphometrics. Size corrected morphometric variables were analyzed using analysis of variance (ANOVA), multivariate analysis of variance (MANOVA), principal component analysis (PCA) and discriminant function analysis (DFA). Coefficients of all PCs were positively and negatively correlated to 31 significant (<i>p</i> < 0.001) truss measurements due to variations in size and shape. Morphometric measurements lying in the head region such as head length (HL), eye diameter (ED), inter-orbital length (IOL) and snout length (SNL) contributed most to differentiate the populations in truss analysis. The ED, HL, SNL and IOL of Yamuna fish was significantly (<i>p</i> < 0.001) smaller than the other fish populations. This could be attributed to the heavy pollution load in the Yamuna River and differences in the feeding regimes of fish. PCs and relative warps depicted differences in geometric analysis because of body shape variations among different river populations. The scatter plot in DFA revealed the presence of three distant and different phenotypic groups of <i>W. attu</i> among five wild river populations of fish with 70.5% and 83.9% of correct classification of fish into their original groups in truss and geometric analysis respectively. A single homogenous stock of fish was found to be in the rivers Gomti, Ganga and Hooghly because of a high level of intermixing (maximum misclassification) among the three river populations, whereas Yamuna and Pampa populations were two non-overlapping isolated groups due to negligible intermixing. These variations in the present study might be the effect of geographical isolation and river fragmentation due to the change in habitat that restricts fish movements. This is the first report on the morphometric assessment of <i>W. attu</i> that provides base line data for further confirmatory stock studies that would be useful for conservation and sustainable management of this vulnerable fish.</p>","PeriodicalId":50359,"journal":{"name":"Inland Water Biology","volume":"35 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2023-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138821809","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-12-19DOI: 10.1134/s1995082923060214
A. N. Sharov, T. B. Zaytseva, N. G. Medvedeva
Abstract
In order to assess the impact of cyanobacteria on mollusks under experimental conditions, the interaction of toxic and nontoxic strains of the cyanobacterium Microcystis aeruginosa (Kützing) Kützing and bivalve mollusks Unio pictorum (Linnaeus, 1758) has been studied. Cyanobacteria have a negative effect on bivalve mollusks: the 40% death of mollusks and deterioration of their adaptive capacity are recorded when cocultivated with M. aeruginosa at a high cell concentration. At the same time, there is no difference in the mortality of mollusks incubated with toxic and nontoxic cyanobacteria. A decrease in the content of microcystin-LR in the presence of bivalves is revealed. No statistically significant increase in the number of cyanobacteria in the water is noted after transit passage through the digestive system of bivalves.
{"title":"Responses of Unio pictorum to the Presence of Toxic and Nontoxic Strains of Microcystis aeruginosa","authors":"A. N. Sharov, T. B. Zaytseva, N. G. Medvedeva","doi":"10.1134/s1995082923060214","DOIUrl":"https://doi.org/10.1134/s1995082923060214","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>In order to assess the impact of cyanobacteria on mollusks under experimental conditions, the interaction of toxic and nontoxic strains of the cyanobacterium <i>Microcystis aeruginosa</i> (Kützing) Kützing and bivalve mollusks <i>Unio pictorum</i> (Linnaeus, 1758) has been studied. Cyanobacteria have a negative effect on bivalve mollusks: the 40% death of mollusks and deterioration of their adaptive capacity are recorded when cocultivated with <i>M. aeruginosa</i> at a high cell concentration. At the same time, there is no difference in the mortality of mollusks incubated with toxic and nontoxic cyanobacteria. A decrease in the content of microcystin-LR in the presence of bivalves is revealed. No statistically significant increase in the number of cyanobacteria in the water is noted after transit passage through the digestive system of bivalves.</p>","PeriodicalId":50359,"journal":{"name":"Inland Water Biology","volume":"33 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2023-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138820905","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-12-19DOI: 10.1134/s1995082923060093
Yu. V. Gerasimov, S. E. Bolotov, A. I. Tsvetkov, E. S. Borisenko
Abstract
This study has been conducted in the river section of the Gorky Reservoir in the zone affected by the heated water discharge from the Kostroma hydroelectric power plant during the growing season (May–November) of 2021. The reduced species richness is observed in the sites of the maximum water heating, which, however, quickly return to the initial values in the downstream section of the river. The lethal effect of warm waters on zooplankton is mainly manifested in the summer, when the natural warming of the river waters is influenced by the heated water discharge from the Kostroma hydroelectric power plant. In autumn, the warming effect of heated waters, on the contrary, promotes the better survival of organisms. Fish reach a high abundance in the study area by the end of summer, when the juvenile leave shallow waters. In the autumn period, the fish redistribution and a significant increase in the abundance occur in the area of heated waters compared to the background sites. The results indicate the absence of an environmentally significant lethal effect. Local plankton losses are quickly compensated for due to high reproduction rates and the short-cycle development of invertebrates. No lethal effect of the exposure to high temperatures on fish was found.
{"title":"Abundance, Distribution, and Mortality of Hydrobionts in the Section of the Gorky Reservoir Affected by Heated Waters of the Kostroma Hydroelectric Power Plant","authors":"Yu. V. Gerasimov, S. E. Bolotov, A. I. Tsvetkov, E. S. Borisenko","doi":"10.1134/s1995082923060093","DOIUrl":"https://doi.org/10.1134/s1995082923060093","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>This study has been conducted in the river section of the Gorky Reservoir in the zone affected by the heated water discharge from the Kostroma hydroelectric power plant during the growing season (May–November) of 2021. The reduced species richness is observed in the sites of the maximum water heating, which, however, quickly return to the initial values in the downstream section of the river. The lethal effect of warm waters on zooplankton is mainly manifested in the summer, when the natural warming of the river waters is influenced by the heated water discharge from the Kostroma hydroelectric power plant. In autumn, the warming effect of heated waters, on the contrary, promotes the better survival of organisms. Fish reach a high abundance in the study area by the end of summer, when the juvenile leave shallow waters. In the autumn period, the fish redistribution and a significant increase in the abundance occur in the area of heated waters compared to the background sites. The results indicate the absence of an environmentally significant lethal effect. Local plankton losses are quickly compensated for due to high reproduction rates and the short-cycle development of invertebrates. No lethal effect of the exposure to high temperatures on fish was found.</p>","PeriodicalId":50359,"journal":{"name":"Inland Water Biology","volume":"203 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2023-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138820961","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-12-19DOI: 10.1134/s1995082923060275
O. V. Mineeva, D. Yu. Semenov
Abstract
During the study of parasites of ninespine stickleback Pungitius pungitius (L., 1758), a resident in the Volga basin, we have found intestinal nematodes, Pseudocapillaria tomentosa (Dujardin, 1843) Lomakin et Trofimenko, 1982 and Rhabdochona denudata (Dujardin, 1845) Railliet, 1916. Both species are recorded for the first time in the parasite fauna of the host in the European part of Russia. Data on the occurrence and intensity of fish invasion by worms are presented.
{"title":"New Data on Parasites of Pungitius pungitius (Pisces, Gasterosteidae) in the Volga River Basin","authors":"O. V. Mineeva, D. Yu. Semenov","doi":"10.1134/s1995082923060275","DOIUrl":"https://doi.org/10.1134/s1995082923060275","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>During the study of parasites of ninespine stickleback <i>Pungitius pungitius</i> (L., 1758), a resident in the Volga basin, we have found intestinal nematodes, <i>Pseudocapillaria tomentosa</i> (Dujardin, 1843) Lomakin et Trofimenko, 1982 and <i>Rhabdochona denudata</i> (Dujardin, 1845) Railliet, 1916. Both species are recorded for the first time in the parasite fauna of the host in the European part of Russia. Data on the occurrence and intensity of fish invasion by worms are presented.</p>","PeriodicalId":50359,"journal":{"name":"Inland Water Biology","volume":"52 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2023-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138820840","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-12-19DOI: 10.1134/s1995082923060172
A. M. Ostrovsky
Abstract
Ecological and faunistic studies into members of the order Odonata in southeastern Belarus have been carried out. New data for 38 odonata species are provided in the report; three species, Erythromma viridulum, Epitheca bimaculata, and Leucorrhinia pectoralis, are new for the region. Zoogeographically, trans-Eurasian and European odonata species predominate. The most numerous is the family Libellulidae. Most of the collected odonata species are widespread and numerous on the territory of southeastern Belarus; rare for the region are Sympecma fusca, S. paedisca, Erythromma viridulum, Ophiogomphus cecilia, Epithecia bimaculata, Somatochlora metallica, Orthetrum brunneum, and Leucorrhinia rubicunda. The data on finding sites, distribution, and ecological and biological characteristics of each species is given.
{"title":"New Data on the Fauna of Dragonflies and Damselflies (Insecta, Odonata) of Southeastern Belarus","authors":"A. M. Ostrovsky","doi":"10.1134/s1995082923060172","DOIUrl":"https://doi.org/10.1134/s1995082923060172","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>Ecological and faunistic studies into members of the order Odonata in southeastern Belarus have been carried out. New data for 38 odonata species are provided in the report; three species, <i>Erythromma viridulum, Epitheca bimaculata,</i> and <i>Leucorrhinia pectoralis,</i> are new for the region. Zoogeographically, trans-Eurasian and European odonata species predominate. The most numerous is the family Libellulidae. Most of the collected odonata species are widespread and numerous on the territory of southeastern Belarus; rare for the region are <i>Sympecma fusca, S. paedisca, Erythromma viridulum, Ophiogomphus cecilia, Epithecia bimaculata, Somatochlora metallica, Orthetrum brunneum,</i> and <i>Leucorrhinia rubicunda</i>. The data on finding sites, distribution, and ecological and biological characteristics of each species is given.</p>","PeriodicalId":50359,"journal":{"name":"Inland Water Biology","volume":"17 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2023-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138820896","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-12-19DOI: 10.1134/s1995082923060068
A. V. Borodina, P. A. Zadorozhny
Abstract
The results of a 2-year study of the composition and content of carotenoids of sea snails Tritia reticulata (L., 1758) living in a mixed bottom community of bivalve mollusks in the sandy zone of the upper sublittoral (depth 0–1 m) of Cossack Bay in Sevastopol are presented. The highest content of total carotenoids are detected in June (1.8–2.09 mg/100 g of wet weight); the average for both years is 1.54 mg/100 g of wet weight. In the qualitative composition of T. reticulata taken from the pastures of bivalves on sandy–silt soil, 15 free carotenoids are identified: β-carotene, echinenone, hydroxyechinenone, astaxanthin, didehydroastaxanthin, diadinoxanthin, diatoxanthin, fucoxanthin, halocynthiaxanthin, fucoxanthinol, mactraxanthin, heteroxanthin, lutein, zeaxanthin, alloxanthin, and esters of the last four carotenoids. The possibility of metabolic transformations of carotenoids is discussed.
{"title":"Composition and Content of Carotenoids of Gastropod Tritia reticulata in the Black Sea","authors":"A. V. Borodina, P. A. Zadorozhny","doi":"10.1134/s1995082923060068","DOIUrl":"https://doi.org/10.1134/s1995082923060068","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The results of a 2-year study of the composition and content of carotenoids of sea snails <i>Tritia reticulata</i> (L., 1758) living in a mixed bottom community of bivalve mollusks in the sandy zone of the upper sublittoral (depth 0–1 m) of Cossack Bay in Sevastopol are presented. The highest content of total carotenoids are detected in June (1.8–2.09 mg/100 g of wet weight); the average for both years is 1.54 mg/100 g of wet weight. In the qualitative composition of <i>T. reticulata</i> taken from the pastures of bivalves on sandy–silt soil, 15 free carotenoids are identified: β-carotene, echinenone, hydroxyechinenone, astaxanthin, didehydroastaxanthin, diadinoxanthin, diatoxanthin, fucoxanthin, halocynthiaxanthin, fucoxanthinol, mactraxanthin, heteroxanthin, lutein, zeaxanthin, alloxanthin, and esters of the last four carotenoids. The possibility of metabolic transformations of carotenoids is discussed.</p>","PeriodicalId":50359,"journal":{"name":"Inland Water Biology","volume":"22 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2023-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138821806","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-12-19DOI: 10.1134/s1995082923060123
Esengül Köse
Abstract
The present study aimed to assess the status of successive dams on surface water quality, especially in reducing organic pollution levels, and their effects on the ecological life were investigated. Water samples were collected seasonally from three dam’s monitoring stations. Temperature, pH, dissolved oxygen, electrical conductivity, turbidity, ammonium nitrogen, nitrite nitrogen, nitrate-nitrogen, sulfate, total phosphorus, chemical oxygen demand, biochemical oxygen demand and total hardness parameters were measured in surface waters. The Geographic Information System (GIS) was used to produce thematic maps of the investigated parameters. Stations used as point feature layers were mapped using quantitative labeling via symbology. The results were compared with Turkish Regulation, 2015 and EC Directive on the quality of fresh waters needing protection or improvement to support fish life (2006) guidelines. According to the results of the analysis, Dams that are located one after the other contribute to the partial cleaning of the water by resting. Sarıyar, Gökçekaya, and Yenice Dams were built on the Sakarya River, which is one of Türkiye’s biggest and most significant river systems, for electric supply and utility of water for irrigation and fishery activities. Gökçekaya Dam Lake was built between Sarıyar Dam and Yenice Dam, which are situated in the same line of Sakarya River. Gökçekaya and Yenice Dams are fed by Sarıyar Dam Lake and do not receive fresh water. The fact that the three dams are established one after the other aids in the water’s resting and the aids in removing the suspended solids/suspended load. But, this research show that domestic, industrial, agricultural wastes carried by the branches of the rivers caused algal blooms in Dam lakes, especially which are not fed with fresh water. Due to organic pollution the decrease in dissolved oxygen, especially from time to time, negatively affects the ecological life in the lakes.
{"title":"A GIS Based Study to Investigate of the Ecological Impacts of Successive Dams on Surface Water Quality: A Review of the Sakarya Basin, Türkiye","authors":"Esengül Köse","doi":"10.1134/s1995082923060123","DOIUrl":"https://doi.org/10.1134/s1995082923060123","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The present study aimed to assess the status of successive dams on surface water quality, especially in reducing organic pollution levels, and their effects on the ecological life were investigated. Water samples were collected seasonally from three dam’s monitoring stations. Temperature, pH, dissolved oxygen, electrical conductivity, turbidity, ammonium nitrogen, nitrite nitrogen, nitrate-nitrogen, sulfate, total phosphorus, chemical oxygen demand, biochemical oxygen demand and total hardness parameters were measured in surface waters. The Geographic Information System (GIS) was used to produce thematic maps of the investigated parameters. Stations used as point feature layers were mapped using quantitative labeling via symbology. The results were compared with Turkish Regulation, 2015 and EC Directive on the quality of fresh waters needing protection or improvement to support fish life (2006) guidelines. According to the results of the analysis, Dams that are located one after the other contribute to the partial cleaning of the water by resting. Sarıyar, Gökçekaya, and Yenice Dams were built on the Sakarya River, which is one of Türkiye’s biggest and most significant river systems, for electric supply and utility of water for irrigation and fishery activities. Gökçekaya Dam Lake was built between Sarıyar Dam and Yenice Dam, which are situated in the same line of Sakarya River. Gökçekaya and Yenice Dams are fed by Sarıyar Dam Lake and do not receive fresh water. The fact that the three dams are established one after the other aids in the water’s resting and the aids in removing the suspended solids/suspended load. But, this research show that domestic, industrial, agricultural wastes carried by the branches of the rivers caused algal blooms in Dam lakes, especially which are not fed with fresh water. Due to organic pollution the decrease in dissolved oxygen, especially from time to time, negatively affects the ecological life in the lakes.</p>","PeriodicalId":50359,"journal":{"name":"Inland Water Biology","volume":"203 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2023-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138820551","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-12-11DOI: 10.1134/s199508292401019x
Iman Dey, Chandrani Mukherjee, Ruma Pal
Abstract
Common Effluent Treatment Plant (CETP) of eastern India leather complex have crucial ecological importance for its close proximity to Indian Sundarbans. Phytoplankton composition in relation to physico-chemical parameters was monitored over 1 year period on direct CETP effluent receiving stream. This stream meets with the Bidyadhari River which flows through the coastal parts of West Bengal and meets with the Bay of Bengal. 3 distinct zones (Upstream, Effluent, and Downstream) were chosen to assess the impact of CETP effluent on receiving stream. Chlorophyceae, Cyanobacteria, Bacillariophyceae, and Euglenophyceae were shown to be dominant in phytoplankton studies. Canonical Correspondence Analysis showed Euglenophyceae was related to most polluted Effluent whereas Bacillariophyceae was closer to least polluted Upstream. Patterns of both Simpson’s diversity index and Simpson’s dominance index clearly indicated alteration in phytoplankton community in the Downstream after mixing of CETP effluent. In contrast to downstream, where pollution was more prevalent (COD 40 mg/dm3) and species diversity was lower (Simpson’s diversity index 6), upstream had lower pollution levels (12 mg/dm3) and more species diversity (15). Discriminant Analysis also supported the above-mentioned fact. The eutrophic condition in the downstream zone is indicated by higher species dominance values (Simpson’s dominance index 0.15) and rich nutrient loads.
{"title":"Impact of Tannery Wastewater Treatment Plant Effluent on Phytoplankton Community of Receiving Stream Heading to Indian-Sundarbans","authors":"Iman Dey, Chandrani Mukherjee, Ruma Pal","doi":"10.1134/s199508292401019x","DOIUrl":"https://doi.org/10.1134/s199508292401019x","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>Common Effluent Treatment Plant (CETP) of eastern India leather complex have crucial ecological importance for its close proximity to Indian Sundarbans. Phytoplankton composition in relation to physico-chemical parameters was monitored over 1 year period on direct CETP effluent receiving stream. This stream meets with the Bidyadhari River which flows through the coastal parts of West Bengal and meets with the Bay of Bengal. 3 distinct zones (Upstream, Effluent, and Downstream) were chosen to assess the impact of CETP effluent on receiving stream. Chlorophyceae, Cyanobacteria, Bacillariophyceae, and Euglenophyceae were shown to be dominant in phytoplankton studies. Canonical Correspondence Analysis showed Euglenophyceae was related to most polluted Effluent whereas Bacillariophyceae was closer to least polluted Upstream. Patterns of both Simpson’s diversity index and Simpson’s dominance index clearly indicated alteration in phytoplankton community in the Downstream after mixing of CETP effluent. In contrast to downstream, where pollution was more prevalent (COD 40 mg/dm<sup>3</sup>) and species diversity was lower (Simpson’s diversity index 6), upstream had lower pollution levels (12 mg/dm<sup>3</sup>) and more species diversity (15). Discriminant Analysis also supported the above-mentioned fact. The eutrophic condition in the downstream zone is indicated by higher species dominance values (Simpson’s dominance index 0.15) and rich nutrient loads.</p>","PeriodicalId":50359,"journal":{"name":"Inland Water Biology","volume":"104 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2023-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138575756","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-12-01DOI: 10.1134/s1995082923060263
Abstract
Three groups of mollusks of the triploid Pacific oyster Crassostrea gigas differing in morphometric parameters—fast-growing (FG) with a shell height of over 40 mm; medium-growing (MG), 15 mm < H < 40 mm; and slow-growing (SG), H < 15 mm—have been studied from the Donuzlav estuary (Black Sea). Stable differences have been revealed in the growth rates of juveniles of the same age. Mollusks of the FG group are dominant in weight gain and linear dimensions throughout the study. The average daily increase in the shell height of the studied mollusks ranges from 0.1 to 0.35 mm/day, with maximum values in June and September. The weight increases with different rates: on average, 0.051 g/day in the SG groups, 0.168 g/day in the MG group, and 0.287 g/day in the FG group. The peaks of this parameter have been recorded in August and September, reaching 0.12, 0.26, and 0.43 g/day, respectively. The shell height of slow-growing polyploid oysters has a negative allometry (b = 2.17), while the other two groups are characterized by a clear positive allometry (b = 3.23 for MG and 3.80 for FG); i.e., the increase in weight is faster than the linear growth in juveniles of the species. It has been suggested that polyploidy (triploidy) determines the differences in the growth rates of the same-aged mollusks. The allometry index b can be used to identify growth features at the early stages of oyster development.
{"title":"Stable Differences in Growth Rates of Juvenile Triploid Oysters Crassostrea gigas Thunberg (Osteidae)","authors":"","doi":"10.1134/s1995082923060263","DOIUrl":"https://doi.org/10.1134/s1995082923060263","url":null,"abstract":"<span> <h3>Abstract</h3> <p>Three groups of mollusks of the triploid Pacific oyster <em>Crassostrea gigas</em> differing in morphometric parameters—fast-growing (FG) with a shell height of over 40 mm; medium-growing (MG), 15 mm < <em>H</em> < 40 mm; and slow-growing (SG), <em>H</em> < 15 mm—have been studied from the Donuzlav estuary (Black Sea). Stable differences have been revealed in the growth rates of juveniles of the same age. Mollusks of the FG group are dominant in weight gain and linear dimensions throughout the study. The average daily increase in the shell height of the studied mollusks ranges from 0.1 to 0.35 mm/day, with maximum values in June and September. The weight increases with different rates: on average, 0.051 g/day in the SG groups, 0.168 g/day in the MG group, and 0.287 g/day in the FG group. The peaks of this parameter have been recorded in August and September, reaching 0.12, 0.26, and 0.43 g/day, respectively. The shell height of slow-growing polyploid oysters has a negative allometry (<em>b</em> = 2.17), while the other two groups are characterized by a clear positive allometry (<em>b</em> = 3.23 for MG and 3.80 for FG); i.e., the increase in weight is faster than the linear growth in juveniles of the species. It has been suggested that polyploidy (triploidy) determines the differences in the growth rates of the same-aged mollusks. The allometry index <em>b</em> can be used to identify growth features at the early stages of oyster development.</p> </span>","PeriodicalId":50359,"journal":{"name":"Inland Water Biology","volume":"29 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138820791","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-12-01DOI: 10.1134/S1995082923060111
I. I. Gordeev, E. A. Boltnev, T. A. Suvorova, D. Mikryakov, L. V. Balabanova
{"title":"Peripheral Blood Cell Composition of Baikal Seal Phoca sibirica","authors":"I. I. Gordeev, E. A. Boltnev, T. A. Suvorova, D. Mikryakov, L. V. Balabanova","doi":"10.1134/S1995082923060111","DOIUrl":"https://doi.org/10.1134/S1995082923060111","url":null,"abstract":"","PeriodicalId":50359,"journal":{"name":"Inland Water Biology","volume":"367 ","pages":"1173-1177"},"PeriodicalIF":0.9,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139020267","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}