Acta Protozoologica最新文献_第9页

A Huge Diversity of Metopids (Ciliophora, Armophorea) in Soil from the Murray River Floodplain, Australia. II. Morphology and Morphogenesis of Lepidometopus platycephalus nov. gen., nov. spec. 澳大利亚墨累河泛滥平原土壤中Metopids（Ciliophora，Armophorea）的巨大多样性。二、扁头鳞翅目动物的形态与形态发生。

IF 0.5 4区生物学

Acta Protozoologica Pub Date : 2017-09-22 DOI: 10.4467/16890027AP.17.004.6968

P. Vďačný, W. Foissner

{"title":"A Huge Diversity of Metopids (Ciliophora, Armophorea) in Soil from the Murray River Floodplain, Australia. II. Morphology and Morphogenesis of Lepidometopus platycephalus nov. gen., nov. spec.","authors":"P. Vďačný, W. Foissner","doi":"10.4467/16890027AP.17.004.6968","DOIUrl":"https://doi.org/10.4467/16890027AP.17.004.6968","url":null,"abstract":"The morphology and morphogenesis of a new Australian metopid ciliate, Lepidometopus platycephalus nov. gen., nov. spec., were studied using live observation, various silver impregnation methods, scanning electron microscopy, and morphometry. The new genus is outstanding in having epicortical scales (lepidosomes) and a strongly flattened and distinctly projecting preoral dome. Diagnostic features of L. platycephalus include a small, reniform body carrying an elongated caudal cilium, about 11 ciliary rows, and an adoral zone composed of an average of 11 polykinetids. The morphogenesis of L. platycephalus matches data from other metopids in that (1) the body is drastically re-shaped, (2) the parental oral structures are reorganized but do not contribute to the daughter oral ciliature, (3) the opisthe’s adoral polykinetids originate pleurotelokinetally, (4) the opisthe’s paroral membrane is formed via re-arrangement of the posterior portion of the first two perizonal rows, and (5) the opisthe’s perizonal stripe is made by three parental perizonal rows and two dorsolateral ciliary rows. The morphogenetic data corroborate phylogenetic analyses in that caenomorphids are only superficially similar to metopids; metopids and clevelandellids are closely related; and litostomateans are the best candidates for a sister group of the metopid-clevelandellid assemblage within the SAL superclade.","PeriodicalId":50883,"journal":{"name":"Acta Protozoologica","volume":"2017 1","pages":"39-57"},"PeriodicalIF":0.5,"publicationDate":"2017-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45555887","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}

引用次数: 12

Morphology and Molecular Phylogeny of Pseudocyrtohymenides lacunae nov. gen., nov. spec. (Ciliophora: Oxytrichidae) from South Korea 韩国腔隙假cyrthymenides nov.gen.，nov.spec.的形态学和分子系统发育（Ciliophora：Oxytrichidae）

IF 0.5 4区生物学

Acta Protozoologica Pub Date : 2017-09-22 DOI: 10.4467/16890027AP.17.002.6966

Jae‐Ho Jung, Kyung-Min Park, G. Min

引用次数: 5

Exploring the diversity and ecology of testate amoebae in West Siberian peatlands 西西伯利亚泥炭地种皮变形虫的多样性及其生态学研究

IF 0.5 4区生物学

Acta Protozoologica Pub Date : 2017-09-22 DOI: 10.4467/16890027AP.17.005.6969

Y. Mazei, V. Chernyshov, S. Bukhkalo, N. Mazei, A. Creevy, R. Payne

{"title":"Exploring the diversity and ecology of testate amoebae in West Siberian peatlands","authors":"Y. Mazei, V. Chernyshov, S. Bukhkalo, N. Mazei, A. Creevy, R. Payne","doi":"10.4467/16890027AP.17.005.6969","DOIUrl":"https://doi.org/10.4467/16890027AP.17.005.6969","url":null,"abstract":"Testate amoebae are valued for their functional significance and application as indicators of environmental conditions, particularly in peatland ecosystems. Research on testate amoebae has increased dramatically in recent years but there are still large parts of the world which have seen very little research. Here we consider testate amoeba communities of the West Siberian Lowland, the world’s largest peatland region and therefore one of the largest potential habitats for testate amoebae. Extensive sampling identified 89 taxa and showed that testate amoeba communities are structured by their physical and biological environment. We identified significant relationships between amoeba communities and both moisture content and vegetation composition. Despite the assemblages containing many widely-distributed species, some taxa considered typical of peatlands (e.g. Archerella flavum and Hyalosphenia papilio) were comparatively rare or absent, paralleling findings further south in Asia. We suggest that testate amoebae in this region deserve further study and may have useful applications in palaeoecological reconstruction and as bioindicators of the impacts of oil and gas extraction.","PeriodicalId":50883,"journal":{"name":"Acta Protozoologica","volume":"2017 1","pages":"59-70"},"PeriodicalIF":0.5,"publicationDate":"2017-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47104479","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}

引用次数: 9

Morphological and Morphometric Description of a Novel Shelled Amoeba Arcella gandalfi sp. nov. (Amoebozoa: Arcellinida) from Brazilian Continental Waters 巴西大陆水域一种新型有壳变形虫Arcella gandalfi sp. nov.(变形虫纲:Arcellinida)的形态学和形态计量学描述

IF 0.5 4区生物学

Acta Protozoologica Pub Date : 2016-12-20 DOI: 10.4467/16890027AP.16.021.6008

J. C. Féres, A. L. Porfírio-Sousa, Giulia M. Ribeiro, G. M. Rocha, J. M. Sterza, M. B. G. E. Souza, C. E. A. Soares, D. Lahr

引用次数: 3

Molecular Phylogeny of the Marine Planktonic Dinoflagellate Oxytoxum and Corythodinium (Peridiniales, Dinophyceae) 海洋浮游鞭毛藻Oxytoxum和Corythodinium的分子系统发育

IF 0.5 4区生物学

Acta Protozoologica Pub Date : 2016-12-19 DOI: 10.4467/16890027AP.16.026.6095

F. Gómez, K. Wakeman, Aika Yamaguchi, H. Nozaki

{"title":"Molecular Phylogeny of the Marine Planktonic Dinoflagellate Oxytoxum and Corythodinium (Peridiniales, Dinophyceae)","authors":"F. Gómez, K. Wakeman, Aika Yamaguchi, H. Nozaki","doi":"10.4467/16890027AP.16.026.6095","DOIUrl":"https://doi.org/10.4467/16890027AP.16.026.6095","url":null,"abstract":"The dinoflagellate genera Oxytoxum and Corythodinium that account for more than fifty species are widespread in warm oceans. These genera have been considered synonyms and thecal plate designations varied among authors. Several planktonic and sand-dwelling genera have been placed within the Oxytoxaceae. We obtained the first molecular data based on small subunit (SSU) rRNA gene sequences of Oxytoxum and Corythodinium, including the type species (O. scolopax and C. tessellatum) and C. frenguellii and C. cristatum. The three species of Corythodinium branched together a strong support [bootstrap (BP) of 98%]. This formed a sister clade with moderate support (BP 75%) with O. scolopax that supported the generic split. Oxytoxaceae should exclusively remain for Oxytoxum and Corythodinium, as an independent group, unrelated to any other known dinoflagellate. Oxytoxum was characterized by spindle-shaped cells with an anterior narrow epitheca, an apical spine and little cingular displacement. Corythodinium exhibits relatively broad cell shapes, with wider epitheca and greater cingular displacement, and an obovate or pentangular anterior sulcal plate that noticeably indented the epitheca. This suggested the need of new combinations for species that were described as Oxytoxum and possessed the characteristics of Corythodinium.","PeriodicalId":50883,"journal":{"name":"Acta Protozoologica","volume":"1234 1","pages":"239-248"},"PeriodicalIF":0.5,"publicationDate":"2016-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70977597","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}

引用次数: 1

Description of a New Testate Amoebae Genus Meisterfeldia with Notes on the Systematics of the Suborder Phryganellina (Amebozoa; Tubulinea; Arcellinida) 新种阿米巴属Meisterfeldia的描述及亚形虫亚目Phryganellina的系统学注释Tubulinea;表壳目)

IF 0.5 4区生物学

Acta Protozoologica Pub Date : 2016-12-19 DOI: 10.4467/16890027AP.16.020.6007

A. Bobrov

引用次数: 4

New microsporidia, Glugea sardinellensis n sp (Microsporea, Glugeida) found in Sardinella aurita Valenciennes, 1847, collected off Tunisian coasts 新小孢子虫，Glugea sardinellensis n sp(小孢子虫，Glugeida)于1847年在突尼斯海岸采集的valciennes aurita Sardinella发现

IF 0.5 4区生物学

Acta Protozoologica Pub Date : 2016-12-19 DOI: 10.4467/16890027AP.16.028.6097

L. Mansour, A. Thabet, A. Harrath, S. Y. Omar, Ahmed Mukhtar, S. R. Sayed, A. Abdel-Baki

{"title":"New microsporidia, Glugea sardinellensis n sp (Microsporea, Glugeida) found in Sardinella aurita Valenciennes, 1847, collected off Tunisian coasts","authors":"L. Mansour, A. Thabet, A. Harrath, S. Y. Omar, Ahmed Mukhtar, S. R. Sayed, A. Abdel-Baki","doi":"10.4467/16890027AP.16.028.6097","DOIUrl":"https://doi.org/10.4467/16890027AP.16.028.6097","url":null,"abstract":"A new microsporidia Glugea sardinellensis n. sp. found in the teleost fish Sardinella aurita Valenciennes collected from the Tunisian coasts. The parasite develops in a large xenomas measuring 1–16 mm in diameter and is generally visible with naked eye in the connective tissue around the pyloric caeca of the host. Xenoma were often rounded, but would be occasionally ovoid or irregular shape, generally creamy but rarely opaque, and filled with mature spores. The spores were unikaryotic pyriform measuring 5–5.5 (5.25±0.24) µm in length and 2.5–3 (2.75±0.24) µm in width. The posterior vacuole was large and occupied more than half of the spore. Ultrastructural study indicated that the mature spore has 13–14 coils of polar filament arranged in one layer, and a rough exospore. Intermediate stages were rare and randomly distributed in the xenoma. Merogonial and sporogonial stages were uni or binucleate. The plasma membrane surrounding the meront was irregular and indented. The mean prevalence was 18.3% and it varied according to season and locality. The distribution of prevalence according to fish size indicated that small fish were primarily affected. Phylogenetic analysis using the partial sequence of the SSU rDNA showed consistent association with species of the genus Glugea. The most closely related species was Glugea atherinae Berrebi, 1979 with 98.5% similarity.","PeriodicalId":50883,"journal":{"name":"Acta Protozoologica","volume":"55 1","pages":"281-290"},"PeriodicalIF":0.5,"publicationDate":"2016-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70977968","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}

引用次数: 4

Microsporidia in a woodland pool I. Lanatospora costata sp. n. (opisthosporidia, microsporidia), parasite of megacyclops viridis (Crustacea, Copepoda) : Fine structure and molecular phylogeny 林池微孢子虫I. Lanatospora costata sp. n. (opisthosporidia, Microsporidia)，巨环虫(megacyclops viridis，甲壳纲，桡足纲)的寄生虫:精细结构和分子系统发育

IF 0.5 4区生物学

Acta Protozoologica Pub Date : 2016-12-19 DOI: 10.4467/16890027AP.16.023.6010

J. Vávra, M. Hyliš, I. Fiala, D. Refardt, J. Larsson

引用次数: 5

New freshwater species of centrohelids Acanthocystis lyra sp. nov. and Acanthocystis siemensmae sp. nov. (Haptista, Heliozoa, Centrohelea) from the South Urals, Russia 俄罗斯南乌拉尔的中心虫Acanthocystis lyra sp.nov.和Acanthocytis siemensmae sp.nov..（Haptista，Heliozoa，Centrohelea）的淡水新种

IF 0.5 4区生物学

Acta Protozoologica Pub Date : 2016-12-19 DOI: 10.4467/16890027AP.16.024.6011

E. Gerasimova, A. Plotnikov

引用次数: 9

Trichodinids (Ciliophora) of Corydoras paleatus (Siluriformes) and Jenynsia multidentata (Cyprinodontiformes) from Argentina, with description of Trichodina corydori n. sp. and Trichodina jenynsii n. sp. 来自阿根廷的Corydoras paleatus（志留目）和Jenynsia multidenta（Cyprinodontiformes）的Trichodinids（Ciliophora），以及对Trichodina corydori n.sp.和Trichodinna jenynsii n.sp.的描述。