Pub Date : 2022-12-01DOI: 10.15298/invertzool.19.4.04
O. N. Kotenko, S. Bagrov, A. Ostrovsky
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{"title":"Aboral (pallial) epithelium in bryozoan larvae: a comparative morpho-functional analysis","authors":"O. N. Kotenko, S. Bagrov, A. Ostrovsky","doi":"10.15298/invertzool.19.4.04","DOIUrl":"https://doi.org/10.15298/invertzool.19.4.04","url":null,"abstract":".","PeriodicalId":37977,"journal":{"name":"Invertebrate Zoology","volume":"86 2 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79749292","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-12-01DOI: 10.15298/invertzool.19.4.08
D. V. Tumanov, E. D. Androsova, G. Avdeeva, A. A. Leontev
: In this paper we present results of the first faunistic investigation of semiterrestrial tardigrade fauna of the North-West Russia using the methods of integrative taxonomy. For our analysis we collected moss samples in five different points of the region. For all the species found in addition to the morphological analysis using light and scanning electron microscopy we obtained data on mitochondrial COI gene sequences and in some cases additional data on 18S rRNA, 28rRNA and ITS-2 sequences. The number of tardigrade species known for the Russian fauna confirmed with molecular data is raised from 3 to 13. Among 11 species found during this investigation four are new for the fauna of Russia ( Milnesium dornensis , M . berladnicorum , Mesocrista revelata , and Paramacro-biotus fairbanksi ). For three species, previously noted for the Russian fauna their presence was for the first time supported with molecular data ( Adropion scoticum , Ramazzottius oberhaeuseri , and Macrobiotus hufelandi ). In the case of three other species found ( Diphascon cf. pingue , Pilatobius cf. bullatus , and Minibiotus cf. intermedius
{"title":"First faunistic investigation of semiterrestrial tardigrade fauna of North-West Russia using the method of DNA barcoding","authors":"D. V. Tumanov, E. D. Androsova, G. Avdeeva, A. A. Leontev","doi":"10.15298/invertzool.19.4.08","DOIUrl":"https://doi.org/10.15298/invertzool.19.4.08","url":null,"abstract":": In this paper we present results of the first faunistic investigation of semiterrestrial tardigrade fauna of the North-West Russia using the methods of integrative taxonomy. For our analysis we collected moss samples in five different points of the region. For all the species found in addition to the morphological analysis using light and scanning electron microscopy we obtained data on mitochondrial COI gene sequences and in some cases additional data on 18S rRNA, 28rRNA and ITS-2 sequences. The number of tardigrade species known for the Russian fauna confirmed with molecular data is raised from 3 to 13. Among 11 species found during this investigation four are new for the fauna of Russia ( Milnesium dornensis , M . berladnicorum , Mesocrista revelata , and Paramacro-biotus fairbanksi ). For three species, previously noted for the Russian fauna their presence was for the first time supported with molecular data ( Adropion scoticum , Ramazzottius oberhaeuseri , and Macrobiotus hufelandi ). In the case of three other species found ( Diphascon cf. pingue , Pilatobius cf. bullatus , and Minibiotus cf. intermedius","PeriodicalId":37977,"journal":{"name":"Invertebrate Zoology","volume":"8 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84237557","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-12-01DOI: 10.15298/invertzool.19.4.03
D. Grishina, D. Schepetov, I. Ekimova
: This paper represents results of an integrative analysis of specimens identified as Eubranchus exiguus (Alder et Hancock, 1848), a common nudibranch species inhabiting hydroid colonies in Northeast Atlantic marine communities. Our study included a molecular analysis, based on mitochondrial COI and 16S rRNA and nuclear histone H3 and 18S rRNA molecular markers. Phylogenetic relationships among species of Eubran-chus Forbes, 1838 were estimated by phylogenetic reconstruction using two algorithms — Bayesian inference and maximum likelihood approaches. The phylogenetic hypotheses were accompanied by species delimitation methods: Assemble Species by Automatic Partitioning (ASAP), Bayesian implementation of the Poisson Tree Processes (bPTP) and General Mixed Yule Coalescent (GMYC). We used COI data to reconstruct a haplotype network for population structure analysis. Morphological defining features were analyzed with a light microscopy and scanning electron microscopy (SEM). Colouration and external appearance of specimens were studied with photographs. Results of the integrative approach indicated the existence of a pseudocryptic new species described herein under the name Eubranchus scintillans sp.n. This new species was found sympatrically with E. exiguus in all studied regions (the Barents and the North Seas).
{"title":"Hidden beauty of the north: a description of Eubranchus scintillans sp.n. (Gastropoda: Nudibranchia) from the Barents Sea and North-East Atlantic","authors":"D. Grishina, D. Schepetov, I. Ekimova","doi":"10.15298/invertzool.19.4.03","DOIUrl":"https://doi.org/10.15298/invertzool.19.4.03","url":null,"abstract":": This paper represents results of an integrative analysis of specimens identified as Eubranchus exiguus (Alder et Hancock, 1848), a common nudibranch species inhabiting hydroid colonies in Northeast Atlantic marine communities. Our study included a molecular analysis, based on mitochondrial COI and 16S rRNA and nuclear histone H3 and 18S rRNA molecular markers. Phylogenetic relationships among species of Eubran-chus Forbes, 1838 were estimated by phylogenetic reconstruction using two algorithms — Bayesian inference and maximum likelihood approaches. The phylogenetic hypotheses were accompanied by species delimitation methods: Assemble Species by Automatic Partitioning (ASAP), Bayesian implementation of the Poisson Tree Processes (bPTP) and General Mixed Yule Coalescent (GMYC). We used COI data to reconstruct a haplotype network for population structure analysis. Morphological defining features were analyzed with a light microscopy and scanning electron microscopy (SEM). Colouration and external appearance of specimens were studied with photographs. Results of the integrative approach indicated the existence of a pseudocryptic new species described herein under the name Eubranchus scintillans sp.n. This new species was found sympatrically with E. exiguus in all studied regions (the Barents and the North Seas).","PeriodicalId":37977,"journal":{"name":"Invertebrate Zoology","volume":"8 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80871433","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-09-01DOI: 10.15298/invertzool.19.3.05
V. Zhikharev, A. Sinev, G. Shurganova, В . С . Жихарев, А . Ю . Синев, Г . В . Шурганова
: Biological invasions require thorough and comprehensive research. During a field investigation in a mouth area of a tributary of the Gorky Reservoir (Middle Volga) an non-indigenous species Pleuroxus denticulatus Birge, 1879 (Crustacea: Cladocera) was encountered. It is one of most common species of Chydoridae in Canada and USA. Morphology of studied specimens fully agrees with earlier descriptions of the species. The role of the species in the zooplankton community of the mouth area river was not significant. Discovery of P. denticulatus in the mouth area of the Shacha River (Kostroma Area) is the second record of its presence in European Russia and its fourth record in the entire country. The mouth area of the Shacha River can apparently act as a local pool for further dispersion of this species into other streams and lakes of the Volga basin, including its major reservoirs.
{"title":"New record of non-indigenous cladoceran Pleuroxus denticulatus Birge, 1879 (Cladocera: Chydoridae) in the European Russia ","authors":"V. Zhikharev, A. Sinev, G. Shurganova, В . С . Жихарев, А . Ю . Синев, Г . В . Шурганова","doi":"10.15298/invertzool.19.3.05","DOIUrl":"https://doi.org/10.15298/invertzool.19.3.05","url":null,"abstract":": Biological invasions require thorough and comprehensive research. During a field investigation in a mouth area of a tributary of the Gorky Reservoir (Middle Volga) an non-indigenous species Pleuroxus denticulatus Birge, 1879 (Crustacea: Cladocera) was encountered. It is one of most common species of Chydoridae in Canada and USA. Morphology of studied specimens fully agrees with earlier descriptions of the species. The role of the species in the zooplankton community of the mouth area river was not significant. Discovery of P. denticulatus in the mouth area of the Shacha River (Kostroma Area) is the second record of its presence in European Russia and its fourth record in the entire country. The mouth area of the Shacha River can apparently act as a local pool for further dispersion of this species into other streams and lakes of the Volga basin, including its major reservoirs.","PeriodicalId":37977,"journal":{"name":"Invertebrate Zoology","volume":"342 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76398837","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-09-01DOI: 10.15298/invertzool.19.3.02
K. Mikhailov
: Recent (2020) calculations of spider species richness in the boundaries of Russia and the former Soviet Union republics, as well as between physiographical regions of these territories, are provided in comparison with earlier data. By December 31st, 2020, 3,529 and 2,497 spider species were reported from the FSU republics and Russia, respectively. A prediction for spider richness of the FSU and Russia is given. Additionally, 39 spider species lists of both the post-Soviet republics and physiographical regions are provided as electronic supplementary data.
{"title":"Progress in the study of the spider fauna (Aranei) of Russia and neighbouring regions: a 2020 update","authors":"K. Mikhailov","doi":"10.15298/invertzool.19.3.02","DOIUrl":"https://doi.org/10.15298/invertzool.19.3.02","url":null,"abstract":": Recent (2020) calculations of spider species richness in the boundaries of Russia and the former Soviet Union republics, as well as between physiographical regions of these territories, are provided in comparison with earlier data. By December 31st, 2020, 3,529 and 2,497 spider species were reported from the FSU republics and Russia, respectively. A prediction for spider richness of the FSU and Russia is given. Additionally, 39 spider species lists of both the post-Soviet republics and physiographical regions are provided as electronic supplementary data.","PeriodicalId":37977,"journal":{"name":"Invertebrate Zoology","volume":"62 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79493231","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-09-01DOI: 10.15298/invertzool.19.3.04
A. F. Taybi, P. Glöer, Y. Mabrouki, А . Ф . Тайби, П . Глёер, Ю . Мабруки
. The species richness of the Hydrobiidae in Morocco is one of the most diverse in North Africa. Ainiella zahredini gen. et sp.n. is a new valvatoid hydrobiid gastropod from Morocco; it can be distinguished from other Moroccan hydrobiids by the morphology of the shell and anatomical criteria.
{"title":"Ainiella zahredini gen. et sp.n. a new valvatoid snail (Gastropoda: Hydrobiidae) from Morocco","authors":"A. F. Taybi, P. Glöer, Y. Mabrouki, А . Ф . Тайби, П . Глёер, Ю . Мабруки","doi":"10.15298/invertzool.19.3.04","DOIUrl":"https://doi.org/10.15298/invertzool.19.3.04","url":null,"abstract":". The species richness of the Hydrobiidae in Morocco is one of the most diverse in North Africa. Ainiella zahredini gen. et sp.n. is a new valvatoid hydrobiid gastropod from Morocco; it can be distinguished from other Moroccan hydrobiids by the morphology of the shell and anatomical criteria.","PeriodicalId":37977,"journal":{"name":"Invertebrate Zoology","volume":"13 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79645235","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-06-01DOI: 10.15298/invertzool.19.2.05
A. R. Mustafina, N. Biserova
: The article describes the architecture and ultrastructure of the excretory system (protonephridial system) of the plerocercoid Pyramicocephalus phocarum (Fabricius, 1780), a parasite of the liver of the cod Gadus morhua Linneaus, 1758. The excretory system consists of cyrtocytes and a syncytial excretory epithelium, which forms the protonephridial funnels, the canal system, and the excretory bladder. Our immunocy-tochemical studies have shown that cyrtocytes are immunoreactive to α -tubulin, the protonephridial complexes are reactive to fibrillar actin. The excretory epithelium consists of differentiated apical cytoplasm specializing at secretion and reabsorption, and sub-merged cytons/perikarya. Architecture of the excretory system includes syncytial canals of various diameters and positions within the body. The 1 st and the 2 nd order canals form a complex three-dimensional peripheral network. The longitudinal central (main) excretory canals branch dichotomously at the posterior end of the body and flow into the excretory bladder. The main excretory canals possess a thick muscular wall innervated by the central nervous system. In addition, the ultrastructure of the excretory bladder, nephropore, terminal excretory pore are described. A close connection between the excretory and nervous systems occurs in the plerocercoid body. In the scolex, the main excretory canals and transverse excretory anastomoses pierce the brain, and underlie the transverse cerebral commissure. Neurites of the main nerve cords innervate the main excretory channels. Apart from this, there are unciliated sensory organs in the wall of the terminal excretory pore. The functional significance of the described structures is discussed. Based on the obtained ultrastructural and immunocytochemical data, we support the hypothesis of primary ultrafiltration through a molecular sieve of the glycocalyx, covering the weir ribs of protonephridia.
{"title":"Excretory system ultrastructure of diphyllobothriid tapeworm Pyramicocephalus phocarum (Cestoda) with cytochemical and functional implication","authors":"A. R. Mustafina, N. Biserova","doi":"10.15298/invertzool.19.2.05","DOIUrl":"https://doi.org/10.15298/invertzool.19.2.05","url":null,"abstract":": The article describes the architecture and ultrastructure of the excretory system (protonephridial system) of the plerocercoid Pyramicocephalus phocarum (Fabricius, 1780), a parasite of the liver of the cod Gadus morhua Linneaus, 1758. The excretory system consists of cyrtocytes and a syncytial excretory epithelium, which forms the protonephridial funnels, the canal system, and the excretory bladder. Our immunocy-tochemical studies have shown that cyrtocytes are immunoreactive to α -tubulin, the protonephridial complexes are reactive to fibrillar actin. The excretory epithelium consists of differentiated apical cytoplasm specializing at secretion and reabsorption, and sub-merged cytons/perikarya. Architecture of the excretory system includes syncytial canals of various diameters and positions within the body. The 1 st and the 2 nd order canals form a complex three-dimensional peripheral network. The longitudinal central (main) excretory canals branch dichotomously at the posterior end of the body and flow into the excretory bladder. The main excretory canals possess a thick muscular wall innervated by the central nervous system. In addition, the ultrastructure of the excretory bladder, nephropore, terminal excretory pore are described. A close connection between the excretory and nervous systems occurs in the plerocercoid body. In the scolex, the main excretory canals and transverse excretory anastomoses pierce the brain, and underlie the transverse cerebral commissure. Neurites of the main nerve cords innervate the main excretory channels. Apart from this, there are unciliated sensory organs in the wall of the terminal excretory pore. The functional significance of the described structures is discussed. Based on the obtained ultrastructural and immunocytochemical data, we support the hypothesis of primary ultrafiltration through a molecular sieve of the glycocalyx, covering the weir ribs of protonephridia.","PeriodicalId":37977,"journal":{"name":"Invertebrate Zoology","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84211376","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-06-01DOI: 10.15298/invertzool.19.2.01
Y. A. Burmistrova, I. Kosevich
: The origin of different variants of animal and plant reproduction remains an actual problem of evolutionary research. The transitions between hermaphroditism and dioecy within the same group of organisms are of particular interest in understanding the evolution of sexual reproduction. Representatives of Cnidaria, the basal group of multicellular animals, are characterized by variety of both asexual and sexual reproduction. Therefore, members of this taxon seem to be promising objects for solving the mentioned problem. For the first time the hermaphroditic colonies of the littoral hydrozoan Clava multicornis (Forsskål, 1775) from the White Sea were found in natural habitats. This species is characterized by development of gonophores (reduced medusae) upon the hydranths during the period of sexual reproduction and is traditionally considered to be dioecious. There are colonies which hydranths form only male gonophores and colonies which hydranths produce only female gonophores. Such colonies, as well as the hydranths themselves, are called male and female, respectively. We found hermaphroditic colonies with hydranths of different sexes within the same colony. Moreover, intersexual gonophores containing female and male gametes simultaneously were present in such hermaphroditic colonies. Details of the organization of intersexual gonophores were studied by methods of light and electron microscopy. Experimental fusion of hydranths taken from male and female colonies with gonophores at the initial stages of development resulted in emergence of chimeric organisms, in which one of the hydranths formed gonophores of the opposite sex, as well as intersex gonophores. This allowed suggesting that the development of hermaph-roditic colonies of C. multicornis in nature occurs due to the fusion of closely growing colonies of different sexes.
{"title":"Hermaphroditism and intersexuality in Clava multicornis (Forsskеl, 1775) (Cnidaria: Hydrozoa)","authors":"Y. A. Burmistrova, I. Kosevich","doi":"10.15298/invertzool.19.2.01","DOIUrl":"https://doi.org/10.15298/invertzool.19.2.01","url":null,"abstract":": The origin of different variants of animal and plant reproduction remains an actual problem of evolutionary research. The transitions between hermaphroditism and dioecy within the same group of organisms are of particular interest in understanding the evolution of sexual reproduction. Representatives of Cnidaria, the basal group of multicellular animals, are characterized by variety of both asexual and sexual reproduction. Therefore, members of this taxon seem to be promising objects for solving the mentioned problem. For the first time the hermaphroditic colonies of the littoral hydrozoan Clava multicornis (Forsskål, 1775) from the White Sea were found in natural habitats. This species is characterized by development of gonophores (reduced medusae) upon the hydranths during the period of sexual reproduction and is traditionally considered to be dioecious. There are colonies which hydranths form only male gonophores and colonies which hydranths produce only female gonophores. Such colonies, as well as the hydranths themselves, are called male and female, respectively. We found hermaphroditic colonies with hydranths of different sexes within the same colony. Moreover, intersexual gonophores containing female and male gametes simultaneously were present in such hermaphroditic colonies. Details of the organization of intersexual gonophores were studied by methods of light and electron microscopy. Experimental fusion of hydranths taken from male and female colonies with gonophores at the initial stages of development resulted in emergence of chimeric organisms, in which one of the hydranths formed gonophores of the opposite sex, as well as intersex gonophores. This allowed suggesting that the development of hermaph-roditic colonies of C. multicornis in nature occurs due to the fusion of closely growing colonies of different sexes.","PeriodicalId":37977,"journal":{"name":"Invertebrate Zoology","volume":"53 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84441199","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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