Invertebrate Zoology最新文献_第5页

Aboral (pallial) epithelium in bryozoan larvae: a comparative morpho-functional analysis 苔藓虫幼虫的卵外(苍白)上皮:比较形态功能分析

Invertebrate Zoology Pub Date : 2022-12-01 DOI: 10.15298/invertzool.19.4.04

O. N. Kotenko, S. Bagrov, A. Ostrovsky

引用次数: 1

First faunistic investigation of semiterrestrial tardigrade fauna of North-West Russia using the method of DNA barcoding 首次利用DNA条形码方法对俄罗斯西北部半陆栖缓步动物区系进行调查

Invertebrate Zoology Pub Date : 2022-12-01 DOI: 10.15298/invertzool.19.4.08

D. V. Tumanov, E. D. Androsova, G. Avdeeva, A. A. Leontev

{"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}

引用次数: 4

Hidden beauty of the north: a description of Eubranchus scintillans sp.n. (Gastropoda: Nudibranchia) from the Barents Sea and North-East Atlantic 隐藏的北方之美:闪烁绿鳃鱼的描述。(腹足纲:裸鳃目)产于巴伦支海和东北大西洋

Invertebrate Zoology Pub Date : 2022-12-01 DOI: 10.15298/invertzool.19.4.03

D. Grishina, D. Schepetov, I. Ekimova

{"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}

引用次数: 0

New record of non-indigenous cladoceran Pleuroxus denticulatus Birge, 1879 (Cladocera: Chydoridae) in the European Russia 俄国欧洲地区非本地枝海目齿齿虎目新记录，1879(枝海目:姬鱼科)

Invertebrate Zoology Pub Date : 2022-09-01 DOI: 10.15298/invertzool.19.3.05

V. Zhikharev, A. Sinev, G. Shurganova, В . С . Жихарев, А . Ю . Синев, Г . В . Шурганова

引用次数: 1

Progress in the study of the spider fauna (Aranei) of Russia and neighbouring regions: a 2020 update 俄罗斯及邻近地区蜘蛛区系(Aranei)研究进展:2020年更新

Invertebrate Zoology Pub Date : 2022-09-01 DOI: 10.15298/invertzool.19.3.02

K. Mikhailov

引用次数: 4

Northwestern Pacific ascidians (Tunicata: Ascidiacea). Part 1. Order Aplousobranchia 西北太平洋海鞘(海鞘科:海鞘科)。第1部分。订单Aplousobranchia

Invertebrate Zoology Pub Date : 2022-09-01 DOI: 10.15298/invertzool.19.3.01

K. Sanamyan

引用次数: 0

A redescription of Microcyclops varicans (G.O. Sars, 1863) (Crustacea: Copepoda: Cyclopidae) 重新描述varicans Microcyclops (G.O. Sars, 1863)(甲壳纲:桡足目:Cyclopidae)

Invertebrate Zoology Pub Date : 2022-09-01 DOI: 10.15298/invertzool.19.3.03

I. Mirabdullayev, D. Defaye

引用次数: 1

Ainiella zahredini gen. et sp.n. a new valvatoid snail (Gastropoda: Hydrobiidae) from Morocco 海葵属，等属。摩洛哥瓣状蜗牛一新种(腹足纲:水螅科)

Invertebrate Zoology Pub Date : 2022-09-01 DOI: 10.15298/invertzool.19.3.04

A. F. Taybi, P. Glöer, Y. Mabrouki, А . Ф . Тайби, П . Глёер, Ю . Мабруки

引用次数: 2

Excretory system ultrastructure of diphyllobothriid tapeworm Pyramicocephalus phocarum (Cestoda) with cytochemical and functional implication 双叶虫绦虫排泄系统超微结构及其细胞化学和功能意义

Invertebrate Zoology Pub Date : 2022-06-01 DOI: 10.15298/invertzool.19.2.05

A. R. Mustafina, N. Biserova

{"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}

引用次数: 1

Hermaphroditism and intersexuality in Clava multicornis (Forsskеl, 1775) (Cnidaria: Hydrozoa) 多角Clava multicornis (forsskandrel, 1775)的雌雄同体和雌雄间性(刺胞目:水螅目)

Invertebrate Zoology Pub Date : 2022-06-01 DOI: 10.15298/invertzool.19.2.01

Y. A. Burmistrova, I. Kosevich

{"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}

引用次数: 0