Igor V Dovgal - Academia.edu (original) (raw)
Papers by Igor V Dovgal
Paper, 2024
The article describes nine suctorian epibiont ciliates, viz. Limnoricus ceter Jankowski, 1981, T... more The article describes nine suctorian epibiont ciliates, viz. Limnoricus ceter Jankowski, 1981, Thecacineta calix (Schröder, 1907), Thecacineta sp., Thecacineta urceolata Liao & Dovgal, 2015, Lecanophrya truncata (Collin, 1909), Acineta tuberosa Ehrenberg, 1834, Acinetides gruberi Curds, 1985, and Trematosoma rotunda (Allgén, 1952), as well as two peritrich ciliates viz. Cothurnia recurva Claparède & Lachmann, 1858 and Cothurnia sp. from Mumbai and adjacent coastal areas, West coast of India. All these species are reported here for the first time from Mumbai and adjacent coastal areas. Lecanophrya truncata is reported here for the first time
from the Indian Ocean. Thecacineta urceolata is reported here for the first time on harpacticoid copepod, earlier all reports were on nematodes. Cothurnia recurva is reported here for the first time as epibiont on tanaids. The notes on the taxonomy and nomenclature of rare suctorian genus Lecanophrya are also provided
Paper, 2023
A review of the ciliate (Ciliophora) species associated to rotifers as epibionts and endoparasite... more A review of the ciliate (Ciliophora) species associated to rotifers as epibionts and endoparasites is presented, based on published records. Thirty rotifer species from 12 genera are known as hosts of ciliates. Among ciliates, one species of class Suctorea and 14 species of class Oligohymenophorea (12 from subclass Peritrichia, one from Hymenostomatia, and one from Astomatia) have been noted as associated to rotifers. The possible factors responsible for host prevalence of ciliates are discussed.
Paper, 2023
The article presents the new find of Dactylophrya-stage of rare parasitic suctorian ciliate of ge... more The article presents the new find of Dactylophrya-stage of rare parasitic suctorian ciliate of genus Tachyblaston on harpacticoid copepod from Mumbai, India. The found specimen was identified as Tachyblaston reversum (Collin, 1909), n. comb. The redescription of T. reversum was provided. The refined diagnoses of genus Tachyblaston and included
species, data on distribution of genus representatives, synonymy and comments on genus taxonomy are also presented.
Paper, 2023
The distributions of tintinnid ciliate species were analyzed in the Mediterranean, Black and Azov... more The distributions of tintinnid ciliate species were analyzed in the Mediterranean, Black and Azov seas, and the Arctic, Indian, Atlantic, Pacific and Southern oceans. Data on the distribution of 916 tintinnid species were processed. It was found that distribution of tintinnids corresponds both to Ubiquity model (EiE) and Moderate endemicity model (MEM), depending on the used spatial scale. As a result, a Scale-Dependent Model (SDM) of marine tintinnid ciliate distribution was proposed.
Paper, 2023
The paper dealt with the inventory of the Crimean freshwater ciliates taxonomic composition as we... more The paper dealt with the inventory of the Crimean freshwater ciliates taxonomic composition as well
as assessment of their indicator value. The work is based on an analysis of the literature on freshwater freeliving ciliates of Crimean waterbodies. The own investigations were conducted using artificial substrates (glass
slides) in 2023 in ponds in the natural park «Maximova Dacha», Sevastopol (15 species of ciliates were found)
and on the river Balaklavka, Balaklava (7 species were found). Eight species of ciliates, i. e., Cyclophrya magna,
Discophrya cothurnata, Vorticella aquadulcis, Opercularia coartata, O. articulata, O. nutans, Epistylis plicatilis
and Oxytricha hymenostoma were recorded for the first time for freshwaters of the Crimean Peninsula. According to the literature and own data, there are 117 species of ciliates in the region, which belong to 2 subphyla
and 10 classes. Sixty-four species of ciliates are indicators of saprobity, which creates prerequisites to the environmental monitoring of the inland water bodies in Crimea.
Paper, 2023
We present the description of the new suctorian genus Copterus gen. n. with type species Copterus... more We present the description of the new suctorian genus Copterus gen. n. with type species Copterus tyloloricatus sp. n. from the family Acinetidae, inhabiting the prosomes and urosomes of calanoid copepods from the northern North Pacific Ocean. The new taxon is characterized by (i) an ellipsoidal to triangular, asymmetric, dorsoventrally flattened cell body, which lies horizontally on the lorica surface; (ii) an unflattened lorica; and (iii) the presence of three to five radially arranged bundles of tentacles positioned at the edge of the body or on actinophores.
Paper, 2023
The article describes a new species of the suctorian ciliate Tokophrya saofranciscoensis sp. nov.... more The article describes a new species of the suctorian ciliate Tokophrya saofranciscoensis sp. nov. inhabiting the body surface (cuticle) of a hyporheos harpacticoid copepod of the genus Forficatocaris from the west São Francisco River (Brazil). The new species differs from other species of the genus by the presence of a short, conical, transversely striated stalk, a body in the form of an elongated cone, and a saddle-shaped apical surface of the body.
Paper, 2023
The article is devoted to the biography of Professor Georgy Nikolaevich Gassovsky (May 19, 1893 –... more The article is devoted to the biography of Professor Georgy Nikolaevich Gassovsky (May 19, 1893 – September 22, 1960), a scientist, teacher and organizer of science. After graduating from Petrograd University in 1916, Gassovsky worked at the university as an assistant, but then a significant period of his life (from 1920 to 1934) was associated with the Far East, where he held various positions, was active in scientific and pedagogical activities, was leader and participant of a number of scientific expeditions. G.N. Gassovsky was one of the key figures in the community of scientists in the Far East. Later he worked in Petrozavodsk (1934–1938), then in Melitopol (1938–1941). During the Great Patriotic War (1941–1944) he was evacuated to Leninabad (Khujand, Tajikistan), where he did not stop his scientific and pedagogical activities. In subsequent years, G.N. Gassovsky served as a head of the department of zoology: from 1944 to 1949 and from 1951 to 1958 – at the Nizhyn State Pedagogical Institute, from 1949 to 1951 – at the Kishinev State University, from 1958 to 1960 – at the Cherkasy Pedagogical Institute. Authorship G.N. Gassovsky owns scientific works on protistology, zoology, hunting and local history. He was awarded the medal “For Valorous Labor in the Great Patriotic War of 1941–1945” and an honorary badge “Excellence in public education of the Ukrainian SSR”.
Paper, 2023
This article deals with the report of a colonial peritrich ciliate species Epistylis obliqua Somm... more This article deals with the report of a colonial peritrich ciliate species Epistylis obliqua Sommer, 1951 as epibiont on
hydrachnid mite Unionicola minor (Soar 1900) from the freshwater in Amsterdam, the Netherlands. The finding of the
species is the first after its original description as well as the first finding on a mite which belongs to family Unionicolidae
Oudemans, 1909. The systematic position, improved diagnosis and morphometrics characteristic of E. obliqua are
presented in the present study.
Paper, 2023
Comparative investigation of morphological variability of the black scorpionfish, Scorpaena porcu... more Comparative investigation of morphological variability of the black scorpionfish, Scorpaena porcus Linnaeus, 1758, from two distant Black Sea localities-Foros village (Crimean Peninsula) and Malyi Utrish village (Krasnodar Krai)-was carried out. Due to sexual dimorphism in the black scorpionfish and small abundance of males in the samples, only mature females were analyzed. A total of 54 individuals were examined (29 from Foros and 25 from Malyi Utrish). We used 5 meristic and 26 morphometric characters. In the meristic characters, there were no region-related differences between black scorpionfish females from Foros and Malyi Utrish; in the morphometric characters (maximum body height, length of the first dorsal fin, distance between pectoral and abdominal fin, length of snout, eye diameter, and length of lower jaw), the differences were statistically significant. The canonical discriminant analysis showed that S. porcus females from Foros were correctly classified with an accuracy of 97%, while females from Malyi Utrish-with an accuracy of 100%. It was suggested that the obtained results are a manifestation of modification variability. However, there were no significant differences between black scorpionfish females from two localities in the total length and body mass, which could result from differences in trophic conditions and fish abundance. This may indicate the existence of a complex of modification and interpopulation variability in S. porcus from the investigated Black Sea localities. Though black scorpionfish pelagic eggs can be transported via sea currents, spatial isolation and limited migrations may lead to the formation of local populations of S. porcus. Nevertheless, analysis of genetic markers is required to test the hypothesis.
Paper, 2023
The paper deals with the discovery of ciliate epibionts Actinocyathula homari and Acineta nitocra... more The paper deals with the discovery of ciliate epibionts Actinocyathula homari and Acineta nitocrae on harpacticoid copepods from Gujarat, the west coast of India. This is also the first record of A. homari as an epibiont on a harpacticoid copepod. Both species are reported here from the Indian coast for the first time. This is also the first record of A. nitocrae from the marine waters with salinity 34.4 ‰.
Paper, 2023
Suctorian epibionts Thecacineta oregonensis (Murphy, 1965) attached on the cuticle of nematode De... more Suctorian epibionts Thecacineta oregonensis (Murphy, 1965) attached on the cuticle of nematode Desmodora sp. is reported here from the seamount area of the Andaman Sea at 990 m depth. The T. oregonensis is reported here for the first time from the Andaman Sea and also from the seamount flank.
Paper, 2023
Comparative investigation of morphological variability of the black scorpionfish, Scorpaena porcu... more Comparative investigation of morphological variability of the black scorpionfish, Scorpaena porcus Linnaeus, 1758, from two distant Black Sea localities – Foros village (Crimean Peninsula) and Malyi Utrish village (Krasnodar Kray) – was carried out. Due to sexual dimorphism in the black scorpionfish and small abundance of males in the samples, only mature females were analyzed. A total of 54 individuals were examined (29 from Foros and 25 from Malyi Utrish). We used 5 meristic and 26 morphometric characters. In the meristic characters, there were no region-related differences between black scorpionfish females from Foros and Malyi Utrish; in the morphometric characters (maximum body height, length of the first dorsal fin, distance between pectoral and abdominal fin, length of snout, eye diameter, and length of lower jaw), the differences were statistically significant. The canonical discriminant analysis showed that S. porcus females from Foros were correctly classified with an accuracy of 97%, while females from Malyi Utrish – with an accuracy of 100%. It was suggested that the obtained results are a manifestation of modification variability. However, there were no significant differences between black scorpionfish females from two localities in the total length and body
mass, which could result from differences in trophic conditions and fish abundance. This may indicate the existence of a complex of modification and interpopulation variability in S. porcus from the investigated Black Sea localities. Though black scorpionfish pelagic eggs can be transported via sea currents, spatial isolation and limited migrations may lead to the formation of local populations of S. porcus. Nevertheless, analysis of genetic markers is required to test the hypothesis.
![Research paper thumbnail of Abibulaeva A.S. & Dovgal I.V. The first finding of ciliate Epistylis clampi Ma et Overstreet, 2006 (Ciliophora: Peritrichia) in the Black Sea. In: XI International conference «Marine Research and Education (MARESEDU-2022». Vol. III (IV): Tver: “PolyPRESS”, 2022. – P. 412-415. [In Russian]](https://attachments.academia-assets.com/97793844/thumbnails/1.jpg)
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Paper, 2022
This study investigated the host-epibiont relationship between calanoid copepods and suctorian ci... more This study investigated the host-epibiont relationship between calanoid copepods and suctorian ciliates collected widely from the northern North Pacific Ocean. Mid-and deep-water adult female calanoids without dormant stages were found to be infested with suctorians, probably because of their larger size, longer intermolt duration and longevity in comparison to males and surface water species. A total of 259 calanoids belonging to sixteen species were infested with five suctorian species. Among them, Candacia columbiae, Gaetanus minutus, Lucicutia bicornuta, Metridia similis, Pleuromamma scutullata, and Racovitzanus antarcticus were reported to be infested with suctorians for the first time in the present study. Ephelota coronata infested only Metridia pacifica and displayed a strong host preference, whereas the other suctorians displayed a weaker host preference. Any suctorian species that infested Metridia pacifica and M. similis attached almost exclusively to their urosome. Suctorians might avoid or could not stay attached to the anterior parts of these fast-swimming copepods. The attachment sites of Actinocyathula pleuromammae and Paracineta gaetani extended to the anterior part of the copepod body as the number of attached suctorians increased, suggesting they were obliged to attach to suboptimal parts that were exposed to faster flow speed.
Paper, 2022
This paper presents the report of peritrich ciliate Cothurnia sp. as epibiont on tanaidaceans fro... more This paper presents the report of peritrich ciliate Cothurnia sp. as epibiont on tanaidaceans from deepsea at 4630 m depth, Carisberg Ridge of the Indian Ocean. This is first report of ciliate epibiont on tanaidaceans
from deep-sea of the Indian Ocean.
Paper, 2022
This article deals with the report of two ciliate species., Cothurnia cf. recurva Claparède & Lac... more This article deals with the report of two ciliate species., Cothurnia cf. recurva Claparède & Lachmann,
1859 and Acineta poculum Hertwig, 1876 as epibionts on ostracods from the subtidal zone of Mumbai, west coast
of India. Acineta poculum is reported here first time from the Indian Ocean. Both species are reported here for the
first time as epibiont on ostracods. Further, additional information is provided in the checklist of ciliate epibionts
of ostracods.
Paper, 2024
The article describes nine suctorian epibiont ciliates, viz. Limnoricus ceter Jankowski, 1981, T... more The article describes nine suctorian epibiont ciliates, viz. Limnoricus ceter Jankowski, 1981, Thecacineta calix (Schröder, 1907), Thecacineta sp., Thecacineta urceolata Liao & Dovgal, 2015, Lecanophrya truncata (Collin, 1909), Acineta tuberosa Ehrenberg, 1834, Acinetides gruberi Curds, 1985, and Trematosoma rotunda (Allgén, 1952), as well as two peritrich ciliates viz. Cothurnia recurva Claparède & Lachmann, 1858 and Cothurnia sp. from Mumbai and adjacent coastal areas, West coast of India. All these species are reported here for the first time from Mumbai and adjacent coastal areas. Lecanophrya truncata is reported here for the first time
from the Indian Ocean. Thecacineta urceolata is reported here for the first time on harpacticoid copepod, earlier all reports were on nematodes. Cothurnia recurva is reported here for the first time as epibiont on tanaids. The notes on the taxonomy and nomenclature of rare suctorian genus Lecanophrya are also provided
Paper, 2023
A review of the ciliate (Ciliophora) species associated to rotifers as epibionts and endoparasite... more A review of the ciliate (Ciliophora) species associated to rotifers as epibionts and endoparasites is presented, based on published records. Thirty rotifer species from 12 genera are known as hosts of ciliates. Among ciliates, one species of class Suctorea and 14 species of class Oligohymenophorea (12 from subclass Peritrichia, one from Hymenostomatia, and one from Astomatia) have been noted as associated to rotifers. The possible factors responsible for host prevalence of ciliates are discussed.
Paper, 2023
The article presents the new find of Dactylophrya-stage of rare parasitic suctorian ciliate of ge... more The article presents the new find of Dactylophrya-stage of rare parasitic suctorian ciliate of genus Tachyblaston on harpacticoid copepod from Mumbai, India. The found specimen was identified as Tachyblaston reversum (Collin, 1909), n. comb. The redescription of T. reversum was provided. The refined diagnoses of genus Tachyblaston and included
species, data on distribution of genus representatives, synonymy and comments on genus taxonomy are also presented.
Paper, 2023
The distributions of tintinnid ciliate species were analyzed in the Mediterranean, Black and Azov... more The distributions of tintinnid ciliate species were analyzed in the Mediterranean, Black and Azov seas, and the Arctic, Indian, Atlantic, Pacific and Southern oceans. Data on the distribution of 916 tintinnid species were processed. It was found that distribution of tintinnids corresponds both to Ubiquity model (EiE) and Moderate endemicity model (MEM), depending on the used spatial scale. As a result, a Scale-Dependent Model (SDM) of marine tintinnid ciliate distribution was proposed.
Paper, 2023
The paper dealt with the inventory of the Crimean freshwater ciliates taxonomic composition as we... more The paper dealt with the inventory of the Crimean freshwater ciliates taxonomic composition as well
as assessment of their indicator value. The work is based on an analysis of the literature on freshwater freeliving ciliates of Crimean waterbodies. The own investigations were conducted using artificial substrates (glass
slides) in 2023 in ponds in the natural park «Maximova Dacha», Sevastopol (15 species of ciliates were found)
and on the river Balaklavka, Balaklava (7 species were found). Eight species of ciliates, i. e., Cyclophrya magna,
Discophrya cothurnata, Vorticella aquadulcis, Opercularia coartata, O. articulata, O. nutans, Epistylis plicatilis
and Oxytricha hymenostoma were recorded for the first time for freshwaters of the Crimean Peninsula. According to the literature and own data, there are 117 species of ciliates in the region, which belong to 2 subphyla
and 10 classes. Sixty-four species of ciliates are indicators of saprobity, which creates prerequisites to the environmental monitoring of the inland water bodies in Crimea.
Paper, 2023
We present the description of the new suctorian genus Copterus gen. n. with type species Copterus... more We present the description of the new suctorian genus Copterus gen. n. with type species Copterus tyloloricatus sp. n. from the family Acinetidae, inhabiting the prosomes and urosomes of calanoid copepods from the northern North Pacific Ocean. The new taxon is characterized by (i) an ellipsoidal to triangular, asymmetric, dorsoventrally flattened cell body, which lies horizontally on the lorica surface; (ii) an unflattened lorica; and (iii) the presence of three to five radially arranged bundles of tentacles positioned at the edge of the body or on actinophores.
Paper, 2023
The article describes a new species of the suctorian ciliate Tokophrya saofranciscoensis sp. nov.... more The article describes a new species of the suctorian ciliate Tokophrya saofranciscoensis sp. nov. inhabiting the body surface (cuticle) of a hyporheos harpacticoid copepod of the genus Forficatocaris from the west São Francisco River (Brazil). The new species differs from other species of the genus by the presence of a short, conical, transversely striated stalk, a body in the form of an elongated cone, and a saddle-shaped apical surface of the body.
Paper, 2023
The article is devoted to the biography of Professor Georgy Nikolaevich Gassovsky (May 19, 1893 –... more The article is devoted to the biography of Professor Georgy Nikolaevich Gassovsky (May 19, 1893 – September 22, 1960), a scientist, teacher and organizer of science. After graduating from Petrograd University in 1916, Gassovsky worked at the university as an assistant, but then a significant period of his life (from 1920 to 1934) was associated with the Far East, where he held various positions, was active in scientific and pedagogical activities, was leader and participant of a number of scientific expeditions. G.N. Gassovsky was one of the key figures in the community of scientists in the Far East. Later he worked in Petrozavodsk (1934–1938), then in Melitopol (1938–1941). During the Great Patriotic War (1941–1944) he was evacuated to Leninabad (Khujand, Tajikistan), where he did not stop his scientific and pedagogical activities. In subsequent years, G.N. Gassovsky served as a head of the department of zoology: from 1944 to 1949 and from 1951 to 1958 – at the Nizhyn State Pedagogical Institute, from 1949 to 1951 – at the Kishinev State University, from 1958 to 1960 – at the Cherkasy Pedagogical Institute. Authorship G.N. Gassovsky owns scientific works on protistology, zoology, hunting and local history. He was awarded the medal “For Valorous Labor in the Great Patriotic War of 1941–1945” and an honorary badge “Excellence in public education of the Ukrainian SSR”.
Paper, 2023
This article deals with the report of a colonial peritrich ciliate species Epistylis obliqua Somm... more This article deals with the report of a colonial peritrich ciliate species Epistylis obliqua Sommer, 1951 as epibiont on
hydrachnid mite Unionicola minor (Soar 1900) from the freshwater in Amsterdam, the Netherlands. The finding of the
species is the first after its original description as well as the first finding on a mite which belongs to family Unionicolidae
Oudemans, 1909. The systematic position, improved diagnosis and morphometrics characteristic of E. obliqua are
presented in the present study.
Paper, 2023
Comparative investigation of morphological variability of the black scorpionfish, Scorpaena porcu... more Comparative investigation of morphological variability of the black scorpionfish, Scorpaena porcus Linnaeus, 1758, from two distant Black Sea localities-Foros village (Crimean Peninsula) and Malyi Utrish village (Krasnodar Krai)-was carried out. Due to sexual dimorphism in the black scorpionfish and small abundance of males in the samples, only mature females were analyzed. A total of 54 individuals were examined (29 from Foros and 25 from Malyi Utrish). We used 5 meristic and 26 morphometric characters. In the meristic characters, there were no region-related differences between black scorpionfish females from Foros and Malyi Utrish; in the morphometric characters (maximum body height, length of the first dorsal fin, distance between pectoral and abdominal fin, length of snout, eye diameter, and length of lower jaw), the differences were statistically significant. The canonical discriminant analysis showed that S. porcus females from Foros were correctly classified with an accuracy of 97%, while females from Malyi Utrish-with an accuracy of 100%. It was suggested that the obtained results are a manifestation of modification variability. However, there were no significant differences between black scorpionfish females from two localities in the total length and body mass, which could result from differences in trophic conditions and fish abundance. This may indicate the existence of a complex of modification and interpopulation variability in S. porcus from the investigated Black Sea localities. Though black scorpionfish pelagic eggs can be transported via sea currents, spatial isolation and limited migrations may lead to the formation of local populations of S. porcus. Nevertheless, analysis of genetic markers is required to test the hypothesis.
Paper, 2023
The paper deals with the discovery of ciliate epibionts Actinocyathula homari and Acineta nitocra... more The paper deals with the discovery of ciliate epibionts Actinocyathula homari and Acineta nitocrae on harpacticoid copepods from Gujarat, the west coast of India. This is also the first record of A. homari as an epibiont on a harpacticoid copepod. Both species are reported here from the Indian coast for the first time. This is also the first record of A. nitocrae from the marine waters with salinity 34.4 ‰.
Paper, 2023
Suctorian epibionts Thecacineta oregonensis (Murphy, 1965) attached on the cuticle of nematode De... more Suctorian epibionts Thecacineta oregonensis (Murphy, 1965) attached on the cuticle of nematode Desmodora sp. is reported here from the seamount area of the Andaman Sea at 990 m depth. The T. oregonensis is reported here for the first time from the Andaman Sea and also from the seamount flank.
Paper, 2023
Comparative investigation of morphological variability of the black scorpionfish, Scorpaena porcu... more Comparative investigation of morphological variability of the black scorpionfish, Scorpaena porcus Linnaeus, 1758, from two distant Black Sea localities – Foros village (Crimean Peninsula) and Malyi Utrish village (Krasnodar Kray) – was carried out. Due to sexual dimorphism in the black scorpionfish and small abundance of males in the samples, only mature females were analyzed. A total of 54 individuals were examined (29 from Foros and 25 from Malyi Utrish). We used 5 meristic and 26 morphometric characters. In the meristic characters, there were no region-related differences between black scorpionfish females from Foros and Malyi Utrish; in the morphometric characters (maximum body height, length of the first dorsal fin, distance between pectoral and abdominal fin, length of snout, eye diameter, and length of lower jaw), the differences were statistically significant. The canonical discriminant analysis showed that S. porcus females from Foros were correctly classified with an accuracy of 97%, while females from Malyi Utrish – with an accuracy of 100%. It was suggested that the obtained results are a manifestation of modification variability. However, there were no significant differences between black scorpionfish females from two localities in the total length and body
mass, which could result from differences in trophic conditions and fish abundance. This may indicate the existence of a complex of modification and interpopulation variability in S. porcus from the investigated Black Sea localities. Though black scorpionfish pelagic eggs can be transported via sea currents, spatial isolation and limited migrations may lead to the formation of local populations of S. porcus. Nevertheless, analysis of genetic markers is required to test the hypothesis.
Paper, 2022
This study investigated the host-epibiont relationship between calanoid copepods and suctorian ci... more This study investigated the host-epibiont relationship between calanoid copepods and suctorian ciliates collected widely from the northern North Pacific Ocean. Mid-and deep-water adult female calanoids without dormant stages were found to be infested with suctorians, probably because of their larger size, longer intermolt duration and longevity in comparison to males and surface water species. A total of 259 calanoids belonging to sixteen species were infested with five suctorian species. Among them, Candacia columbiae, Gaetanus minutus, Lucicutia bicornuta, Metridia similis, Pleuromamma scutullata, and Racovitzanus antarcticus were reported to be infested with suctorians for the first time in the present study. Ephelota coronata infested only Metridia pacifica and displayed a strong host preference, whereas the other suctorians displayed a weaker host preference. Any suctorian species that infested Metridia pacifica and M. similis attached almost exclusively to their urosome. Suctorians might avoid or could not stay attached to the anterior parts of these fast-swimming copepods. The attachment sites of Actinocyathula pleuromammae and Paracineta gaetani extended to the anterior part of the copepod body as the number of attached suctorians increased, suggesting they were obliged to attach to suboptimal parts that were exposed to faster flow speed.
Paper, 2022
This paper presents the report of peritrich ciliate Cothurnia sp. as epibiont on tanaidaceans fro... more This paper presents the report of peritrich ciliate Cothurnia sp. as epibiont on tanaidaceans from deepsea at 4630 m depth, Carisberg Ridge of the Indian Ocean. This is first report of ciliate epibiont on tanaidaceans
from deep-sea of the Indian Ocean.
Paper, 2022
This article deals with the report of two ciliate species., Cothurnia cf. recurva Claparède & Lac... more This article deals with the report of two ciliate species., Cothurnia cf. recurva Claparède & Lachmann,
1859 and Acineta poculum Hertwig, 1876 as epibionts on ostracods from the subtidal zone of Mumbai, west coast
of India. Acineta poculum is reported here first time from the Indian Ocean. Both species are reported here for the
first time as epibiont on ostracods. Further, additional information is provided in the checklist of ciliate epibionts
of ostracods.
Book, 2019
The results of author’s investigations and literary data on ciliates of the order Tintinnida obse... more The results of author’s investigations and literary data on ciliates of the order Tintinnida observed in the Black Sea and the Sea of Azov are summarized in the monograph. Book contains the general characteristic
of order, information on morphology of 51 species from 20 genera of 10 families, their longterm and seasonal dynamics in Sevastopol Bay of the Black Sea and peculiarities of tintinnid distribution.
English summaries of all chapters, including diagnoses of all species recorded in the Black and Azov Seas are included in the Appendix.
The monograph dedicated for hydrobiologists, zoologists, faunal researchers and taxonomists as for lecturers and students of higher education schools.