Cryptogamie Algologie最新文献_第5页

A Critical Review of Cyanobacteria Distribution and Cyanotoxins Occurrence in Atlantic Ocean Islands 大西洋岛屿蓝藻菌分布和蓝藻毒素的研究进展

IF 1.3 4区生物学

Cryptogamie Algologie Pub Date : 2020-07-22 DOI: 10.5252/cryptogamie-algologie2020v41a9

Rita Cordeiro, R. Luz, V. Vasconcelos, Amélia Fonseca, V. Gonçalves

{"title":"A Critical Review of Cyanobacteria Distribution and Cyanotoxins Occurrence in Atlantic Ocean Islands","authors":"Rita Cordeiro, R. Luz, V. Vasconcelos, Amélia Fonseca, V. Gonçalves","doi":"10.5252/cryptogamie-algologie2020v41a9","DOIUrl":"https://doi.org/10.5252/cryptogamie-algologie2020v41a9","url":null,"abstract":"ABSTRACT Cyanobacteria are diverse, complex and a unique group of microorganisms that inhabit a wide variety of environments. Contrarily to continental areas, studies on cyanobacteria in islands are scarce and need to be reinforced, since climate change impacts are expected to be harsher in islands, due to their geographical isolation and higher exposition to external influences. Here we present a review of the occurrence of cyanobacteria and cyanotoxins in inland and coastal ecosystems in the Atlantic Ocean islands. These microorganisms were reported from diverse habitats, including saline thermal lakes (Iceland), freshwater lakes, terrestrial habitats (Azores, Cuba), and marine coastal areas, either planktonic (Madeira, Canary Islands, Cape Verde) or associated to plants and corals (Brazil, Caribbean Sea). Most of cyanobacteria were reported from freshwaters but some species were found in different habitats. Species richness also varied between islands, with higher number in islands located in temperate regions, and the number of common taxa was low (1-3%). Several toxic species and different types of cyanotoxins were also reported in the Atlantic islands, which are expected to increase with climate change. Mitigation measures should be considered to avoid cyanotoxins risks to environmental and public health. This works shows the great potential of Atlantic islands for cyanobacteria taxonomic, ecological and biogeography research, but more studies are needed with emphasis on less studied islands and habitats and using novel approaches as molecular systematics tools. Furthermore, such studies are of paramount importance for environmental conservation and management strategies, especially facing climate changes.","PeriodicalId":51000,"journal":{"name":"Cryptogamie Algologie","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2020-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89903050","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: 6

Molecular Assessment of the Tribes Streblocladieae and Polysiphonieae (Rhodomelaceae, Rhodophyta) in the British Isles Reveals New Records and Species that Require Taxonomic Revision 英伦三岛Streblocladieae和Polysiphonieae (Rhodomelaceae, rhodophyia)部落的分子鉴定揭示了需要修订分类的新记录和新物种

IF 1.3 4区生物学

Cryptogamie Algologie Pub Date : 2020-06-05 DOI: 10.5252/cryptogamie-algologie2020v41a8

Cristina Piñeiro‐Corbeira, C. Maggs, F. Rindi, Francis Bunker, L. Baldock, P. Díaz-Tapia

{"title":"Molecular Assessment of the Tribes Streblocladieae and Polysiphonieae (Rhodomelaceae, Rhodophyta) in the British Isles Reveals New Records and Species that Require Taxonomic Revision","authors":"Cristina Piñeiro‐Corbeira, C. Maggs, F. Rindi, Francis Bunker, L. Baldock, P. Díaz-Tapia","doi":"10.5252/cryptogamie-algologie2020v41a8","DOIUrl":"https://doi.org/10.5252/cryptogamie-algologie2020v41a8","url":null,"abstract":"ABSTRACT The use of molecular tools often shows that regional species diversity differs from what we know from assessments based on morphological identifications. The seaweed flora of the British Isles has been well established over a long period from foundational work published during the XVIII-XIX centuries to more recent revisions based on molecular tools. The application of these tools (primarily rbcL sequences), alongside morphological observations, to the study of the tribes Streblocladieae and Polysiphonieae in the British Isles led us to three new records of species, as well as two species that require taxonomic revision. Polysiphonia morrowii Harvey, P. delicata Díaz-Tapia and Vertebrata tripinnata (Harvey) Kuntze are recorded for the first time in the British Isles. Finding P. morrowii and P. delicata, which are considered introduced or cryptogenic in Europe, is not surprising and these new records improve our knowledge of their distribution. Vertebrata tripinnata had previously been recorded in southern Europe and collecting it on the northern coast of Ireland considerably expands its known distribution. We also found that rbcL and cox1 sequences for the morphologically divergent V. simulans (Harvey) Kuntze and P. ceramiiformis P.Crouan & H.Crouan (which has never been transferred to Vertebrata) from the British Isles were identical, and we propose to reduce the latter to a synonym of the former. Finally, we found two pseudo-cryptic species represented in specimens morphologically assigned to V. fruticulosa (Wulfen) Kuntze, and we propose the resurrection of V. martensiana (Kützing) Piñeiro-Corbeira, Maggs & Díaz-Tapia. This work further evidences the relevance of reassessing red algal species diversity using molecular tools, even in regions where floras are considered well-known.","PeriodicalId":51000,"journal":{"name":"Cryptogamie Algologie","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2020-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83469004","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: 7

Distribution of Potentially Toxic Epiphytic Dinoflagellates in Saint Martin Island (Caribbean Sea, Lesser Antilles) 潜在毒性附生鞭毛藻在圣马丁岛(加勒比海、小安的列斯群岛)的分布

IF 1.3 4区生物学

Cryptogamie Algologie Pub Date : 2020-04-23 DOI: 10.5252/cryptogamie-algologie2020v41a7

Aurélie Boisnoir, Pierre-Yves Pascal, N. Chomérat, R. Lémée

{"title":"Distribution of Potentially Toxic Epiphytic Dinoflagellates in Saint Martin Island (Caribbean Sea, Lesser Antilles)","authors":"Aurélie Boisnoir, Pierre-Yves Pascal, N. Chomérat, R. Lémée","doi":"10.5252/cryptogamie-algologie2020v41a7","DOIUrl":"https://doi.org/10.5252/cryptogamie-algologie2020v41a7","url":null,"abstract":"ABSTRACT For the first time, distribution of epiphytic dinoflagellates was studied in Saint Martin Island (Lesser Antilles) during the cyclonic season (between September 1st and 3rd, 2015). The present study provides a semi-quantitative analysis because the fresh weight of each macrophyte was estimated around 10 g. The identified genera were: Ostreopsis J.Schmidt, Prorocentrum Ehrenberg, Coolia Meunier, Amphidinium Claperède & Lachmann, and Gambierdiscus Adachi & Fukuyo in order of decreasing abundance. Highest average abundance values of the genera Ostreopsis and Amphidinium were hosted by macrophytes of the Phaeophyceae class with c. 15 000 and 60 cells g–1 respectively. Epiphytic Coolia cells were mainly observed on seagrasses with the highest average abundance value of c. 1000 cells g–1 whereas the genera Gambierdiscus and Prorocentrum were most often associated with Florideophyceae with the highest average abundances of c. 70 and 1500 cells g–1 respectively. This preliminary study indicates the most relevant locations to survey the biodiversity of potentially toxic epiphytic dinoflagellates in Saint Martin Island.","PeriodicalId":51000,"journal":{"name":"Cryptogamie Algologie","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2020-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78652846","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: 3

Morphological description and molecular phylogeny of two diatom clones from the genus Ulnaria (Kützing) Compère isolated from an ultraoligotrophic lake at the Pole of Cold in the Northern Hemisphere, Republic of Sakha (Yakutia), Russia 俄罗斯萨哈共和国(雅库特)北半球极寒超贫营养化湖泊Ulnaria (k<s:1> tzing) compcompre属两个硅藻克隆的形态描述和分子系统发育

IF 1.3 4区生物学

Cryptogamie Algologie Pub Date : 2020-04-17 DOI: 10.5252/cryptogamie-algologie2020v41a6

Y. Zakharova, Y. Bedoshvili, D. Petrova, A. Marchenkov, N. A. Volokitina, M. Bashenkhaeva, L. Kopyrina, M. Grachev, Y. Likhoshway

{"title":"Morphological description and molecular phylogeny of two diatom clones from the genus Ulnaria (Kützing) Compère isolated from an ultraoligotrophic lake at the Pole of Cold in the Northern Hemisphere, Republic of Sakha (Yakutia), Russia","authors":"Y. Zakharova, Y. Bedoshvili, D. Petrova, A. Marchenkov, N. A. Volokitina, M. Bashenkhaeva, L. Kopyrina, M. Grachev, Y. Likhoshway","doi":"10.5252/cryptogamie-algologie2020v41a6","DOIUrl":"https://doi.org/10.5252/cryptogamie-algologie2020v41a6","url":null,"abstract":"ABSTRACT Diatoms from the extreme cold habitats in northern areas of East Siberia are still poorly studied. Ecological significance of the lakes of the Pole of Cold of the Northern Hemisphere consists in their pristine environment characterized by special environmental factors, such as the long ice cover period, low temperatures, short vegetative period, low photosynthetically active radiation, deficiency of nutrients. Such water systems can thus be used as sensitive indicators of environmental changes. The diatom Ulnaria ulna (Nitzsch) Compère from the genus Ulnaria (Kützing) Compère is widespread in fresh and brackish waters of the world, both in plankton and in benthos, which raises questions about the actual distribution of this species and the presence of cryptic species hidden under this name. In this study, monoclonal cultures of Ulnaria were isolated from epilithic microphytobenthos collected in Lake Labynkyr, located in the northern Pole of Cold region in the Sakha Republic (Yakutia), and were investigated in detail by light and scanning electron microscopy and phylogenetic analysis of the rbcL gene fragments. Cells in culture were able to attach to the substrate with mucilage strands secreted through the pore fields of both valves at one end of the cell. The results of the morphometric and phylogenetic analyses enabled to identify the isolated clones as Ulnaria pilum Kulikovskiy & Lange-Bertalot and showed that species morhoplogical variability is larger than originally described.","PeriodicalId":51000,"journal":{"name":"Cryptogamie Algologie","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2020-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85932081","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: 5

Sighting of Saccorhiza polyschides (Lightfoot) Batters (Phaeophyceae, Stramenopiles) in Algeria (Mediterranean Sea): an Insight into Range Expansion Routes 在阿尔及利亚(地中海)发现多足(光足)蝠(褐藻科，层桩目):对范围扩展路线的洞察

IF 1.3 4区生物学

Cryptogamie Algologie Pub Date : 2020-04-01 DOI: 10.5252/cryptogamie-algologie2020v41a5

C. Boudouresque, R. Semroud, A. Blanfuné, M. Perret-Boudouresque

引用次数: 1

Observations of the Diatoms Sceptronema orientale Takano and Tabularia parva (Kützing) D.M.Williams & Round on the Exoskeleton of Copepods in the English Channel and Coastal Celtic Seas 英吉利海峡和沿海凯尔特海桡足类外骨骼的观察:东方角硅藻(Sceptronema orientale Takano)和小鳞硅藻(Tabularia parva) (k<e:1> tzing) D.M.Williams & Round

IF 1.3 4区生物学

Cryptogamie Algologie Pub Date : 2020-03-20 DOI: 10.5252/cryptogamie-algologie2020v41a4

F. Gómez, L. Courcot, L. Artigas

引用次数: 4

Pseudoderbesia Eckloniae, sp. nov. (Bryopsidaceae, Ulvophyceae) from Western Australia 西澳大利亚的Eckloniae Pseudoderbesia, sp. 11 .(苔藓科，苔藓科)

IF 1.3 4区生物学

Cryptogamie Algologie Pub Date : 2020-03-04 DOI: 10.5252/cryptogamie-algologie2020v41a3

J. Huisman, Heroen Verbruggen

引用次数: 0

Encyonema keshrii, sp. nov.: A New Diatom Species (Cymbellales, Bacillariophyceae) from the Indian Subcontinent 印度次大陆一硅藻新种(小叶藻门，硅藻科)

IF 1.3 4区生物学

Cryptogamie Algologie Pub Date : 2020-02-19 DOI: 10.5252/cryptogamie-algologie2020v41a2

Surajit Roy, C. Radhakrishnan, Jonathan C. Taylor, M. Kulikovskiy, B. Karthick

引用次数: 1

Adlafia diahotensis, sp. nov. (Bacillariophyceae), a New Species from New Caledonia Adlafia diahotensis, sp. 11(硅藻科)，新喀里多尼亚一新种

IF 1.3 4区生物学

Cryptogamie Algologie Pub Date : 2020-02-10 DOI: 10.5252/cryptogamie-algologie2020v41a1

René Le Cohu, Julien Marquié, L. Tudesque

引用次数: 0

Three New Species of Ulnaria (Kützing) Compère (Bacillariophyta) from China, with Reference to the Fine Structure of Their Valvocopula 中国Ulnaria (k<s:1> tzing) compcompre(硅藻门)三新种及其瓣门精细结构的比较

IF 1.3 4区生物学

Cryptogamie Algologie Pub Date : 2019-12-11 DOI: 10.5252/cryptogamie-algologie2019v40a11

Bing Liu, David M. Williams, S. Blanco, Zhu-xiang Liu, Dan Liu

{"title":"Three New Species of Ulnaria (Kützing) Compère (Bacillariophyta) from China, with Reference to the Fine Structure of Their Valvocopula","authors":"Bing Liu, David M. Williams, S. Blanco, Zhu-xiang Liu, Dan Liu","doi":"10.5252/cryptogamie-algologie2019v40a11","DOIUrl":"https://doi.org/10.5252/cryptogamie-algologie2019v40a11","url":null,"abstract":"ABSTRACT Three new species of Ulnaria (Kützing) Compère are described based on light and scanning electric microscopy observations. Ulnaria oxybiseriata D.M. Williams & Bing Liu, sp. nov., has linear-lanceolate to lanceolate valves with apiculate and produced ends, biseriate striae, and a central area mostly forming an incomplete fascia surrounded by shortened striae on one side. Ulnaria jinbianensis S. Blanco & Bing Liu, sp. nov., bears linear-lanceolate valves with rostrate to subrostrate ends in larger valves and cuneate ends in smaller valves, uniseriate stria, and a central area forming a rectangular to trapezoid fascia. Ulnaria dongtingensis Bing Liu, sp. nov., possesses a narrow-lanceolate valve outline with produced rostrate to capitate ends, uniseriate stria, and a central area forming almost square fascia. The valvocopula of all three new species bears the same ultrastructure: 1) a complete valvocopula is a closed ring with the same shape as the valve outline, closely attached to the mantle interior surrounding the valve margin; 2) each valvocopula present a row of poroids which bisects the pars interior and exterior; 3) valvocopula with sawtooth-shaped projections attached to the valve over virgae internally; and 4) the valvocopula closed and hyaline at both apices. All three species were found in alkaline freshwater (around pH 8) with moderate conductivity (c. 102-221 µS/cm).","PeriodicalId":51000,"journal":{"name":"Cryptogamie Algologie","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2019-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83071231","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: 3