IF 2.2 3区生物学

Fottea Pub Date : 2020-08-25 DOI: 10.5507/fot.2020.003

C. Radhakrishnan, S. Das, Vikas Kumar, J. Kociolek, B. Karthick

引用次数: 2

Majewskaea gen. nov. (Bacillariophyta), a new marine benthic diatom genus from the Adriatic Sea 亚得里亚海底栖硅藻属(Majewskaea gen. 11 .)

IF 2.2 3区生物学

Fottea Pub Date : 2020-08-24 DOI: 10.5507/fot.2020.001

B. Vijver, K. Robert, A. Witkowski, Sunčica Bosak

{"title":"Majewskaea gen. nov. (Bacillariophyta), a new marine benthic diatom genus from the Adriatic Sea","authors":"B. Vijver, K. Robert, A. Witkowski, Sunčica Bosak","doi":"10.5507/fot.2020.001","DOIUrl":"https://doi.org/10.5507/fot.2020.001","url":null,"abstract":"During a survey of the diatom flora attached to carapaces of loggerhead sea turtles (Caretta caretta) from the Adriatic Sea, a large population of an unknown marine achnanthoid species was observed that could not be assigned to any of the currently described monoraphid diatom genera. Detailed morphological analysis based on scanning electron microscopy observations and comparison with a large number of monoraphid genera such as Madinithidium, Scalariella, Kolbesia and Karayevia, resulted in the description of the new benthic marine genus Majewskaea gen. nov. with the newly described Majewskaea istriaca sp. nov. as generitype. The new genus is characterized by a sternum valve showing a clear recurving ridge surrounding the entire valve margin, the presence of macroareolae closed internally by perforated hymenes, separated by a longitudinal hyaline area, a well-developed sternum and vestigial raphe slits. The raphe valve has a simple straight raphe with bent terminal fissures, a very fine striation pattern composed of macroareolae cut in two by a longitudinal hyaline zone, and a very shallow mantle. The new genus is illustrated using both LM and SEM observations and compared with other resembling marine and brackish Planothidium monoraphid species.","PeriodicalId":55149,"journal":{"name":"Fottea","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2020-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44213582","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Three new Navicula (Bacillariophyta) species from an oligotrophic, deep lake, China 中国某贫营养深湖的三新种(硅藻纲)

IF 2.2 3区生物学

Fottea Pub Date : 2020-08-24 DOI: 10.5507/fot.2020.002

Yanling Li, Mengna Liao, D. Metzeltin

引用次数: 0

Nagumoea serrata, a new diatom species (Bacillariophyceae) found on seagrass from the south-eastern coast of Africa (Indian Ocean) Nagumoea serrata，一种新的硅藻（硅藻科），发现于非洲东南海岸（印度洋）的海草上

IF 2.2 3区生物学

Fottea Pub Date : 2020-04-01 DOI: 10.5507/fot.2019.019

R. Majewska, B. Vijver

引用次数: 2

Mining salinisation of rivers: its impact on diatom (Bacillariophyta) assemblages 河流的采矿盐碱化：对硅藻（硅藻门）组合的影响

IF 2.2 3区生物学

Fottea Pub Date : 2020-04-01 DOI: 10.5507/fot.2019.010

M. Bąk, Dariusz Halabowski, A. Kryk, I. Lewin, A. Sowa

引用次数: 9

Seminavis aegyptiaca sp. nov., a new amphoroid diatom species from estuary epilithon of the River-Nile Damietta Branch, Egypt 埃及尼罗河达米埃塔支流河口巨角藻两性硅藻一新种

IF 2.2 3区生物学

Fottea Pub Date : 2020-04-01 DOI: 10.5507/fot.2019.015

Saber, A bAbdullah, Ehab F. El-Belely, A. El-Refaey, A. El-Gamal, S. Blanco, M. Cantonati

{"title":"Seminavis aegyptiaca sp. nov., a new amphoroid diatom species from estuary epilithon of the River-Nile Damietta Branch, Egypt","authors":"Saber, A bAbdullah, Ehab F. El-Belely, A. El-Refaey, A. El-Gamal, S. Blanco, M. Cantonati","doi":"10.5507/fot.2019.015","DOIUrl":"https://doi.org/10.5507/fot.2019.015","url":null,"abstract":"During a recent floristic-taxonomic study on the algal flora, including diatoms, from the estuary of the Damietta Branch of the Nile in Egypt, an interesting epilithic diatom species belonging to the genus Seminavis (Naviculaceae) was collected and investigated using both light and scanning electron microscopy. This new diatom species shares morphologically some taxonomic diagnostic features with other related taxa such as S. insignis, S. robusta, and S. ventricosa. However, it still differs by having ventral central striae that are shorter and more or less straight in the middle of the smaller frustules to be clearly radiate in the larger ones and then become geniculate and only radiate near the poles, the central raphe endings are externally more distantly spaced than in the similar species, the elongate central nodule is internally less prominent, and the areola density is much denser. Therefore, we here describe it as Seminavis aegyptiaca sp. nov. Hydrochemical analyses revealed that S. aegyptiaca commonly inhabits typical marine, with a weak tendency towards brackish water, habitats. It was found to be tolerant to meso-eutrophic, nutrient-enriched conditions, based on the data available on seasonal concentrations of N and P compounds. These findings not only contribute to the inventory of Egyptian diatoms, but also increase our understanding of the autecology and distribution of this relatively poorly-known diatom genus.","PeriodicalId":55149,"journal":{"name":"Fottea","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2020-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42295803","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Platebaikalia - a new monoraphid diatom genus from ancient Lake Baikal with comments on the genus Platessa Platebaikalia——古贝加尔湖一个新的广场形硅藻属——兼论Platessa属

IF 2.2 3区生物学

Fottea Pub Date : 2020-04-01 DOI: 10.5507/fot.2019.014

M. Kulikovskiy, A. Glushchenko, S. Genkal, I. Kuznetsova, J. Kociolek

{"title":"Platebaikalia - a new monoraphid diatom genus from ancient Lake Baikal with comments on the genus Platessa","authors":"M. Kulikovskiy, A. Glushchenko, S. Genkal, I. Kuznetsova, J. Kociolek","doi":"10.5507/fot.2019.014","DOIUrl":"https://doi.org/10.5507/fot.2019.014","url":null,"abstract":"A new monoraphid diatom genus, Platebaikalia gen. nov., was described based on a detailed morphological investigation using light and scanning electron microscopy. Previously Platessa elegans Kulikovskiy et Lange-Bertalot was described from ancient Lake Baikal, and this species serves as the generitype for the newly-described genus. Platebaikalia elegans is a rare taxon found in the deeper parts of Lake Baikal. Platebaikalia elegans is characterized by having multiseriate striae on the raphe valves with biseriate striae on the rapheless valves, though in some specimens a short third row of areolae may be present in some striae. Morphology of striae is helpful to distinguish the genus Platebaikalia from Platessa and other monoraphid genera. Other morphological features that differentiate our new genus from other monoraphid taxa are discussed. We review the morphological data on Platessa species, and based on these data can recognize eight groups of taxa in the genus. Our analysis shows that Platessa as currently circumscribed may contain groups of species that are quite different from one another morphologically, and possibly includes taxa that could be recognized as different at the genus level. A few new combinations are suggested when taxa from the genus Platessa transferred to genera Psammothidium and Planothidium. Some problems of taxonomy of monoraphid taxa are discussed and we believe that taxonomy of this group of diatoms is in need of special attention in future.","PeriodicalId":55149,"journal":{"name":"Fottea","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2020-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47847057","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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: 10

Analysis and critical evaluation of structural features in four Cymbellaceae taxa from New Caledonia 新喀里多尼亚四个苏铁科植物结构特征的分析与评价

IF 2.2 3区生物学

Fottea Pub Date : 2020-04-01 DOI: 10.5507/fot.2019.017

René Le Cohu, H. LANGE-BERTALOT, Bart Van de Viver, L. Tudesque

{"title":"Analysis and critical evaluation of structural features in four Cymbellaceae taxa from New Caledonia","authors":"René Le Cohu, H. LANGE-BERTALOT, Bart Van de Viver, L. Tudesque","doi":"10.5507/fot.2019.017","DOIUrl":"https://doi.org/10.5507/fot.2019.017","url":null,"abstract":"Delicatophycus costei (Lange-Bertalot et Moser) Wynne, Cymbella bourrellyi Maillard, Cymbella latarea Maillard and Cymbella pernodensis Maillard are endemic to New Caledonia and show uncommon morphological features compared to the \"sensu stricto\" definition of their respective genus. Delicatophycus costei was described based on light microscopy and scanning electron microscopy (SEM) observations, confirming the generic LM diagnosis. However, the external view in SEM is atypical as both valve face and mantle are covered by longitudinal ribs, overlaying part of the zig-zag striae, generally accepted as the determinant generic feature. The three species of Cymbella have both apical pore fields and \"stigmata\". However, they show some specific morphological features compared to the more classically shaped Cymbella species. Cymbella bourrellyi has a narrow hyaline area on the valve face and the areolae are bordered internally by small outgrowths. Cymbella pernodensis is distinguished by internal biseriate striae. The internal morphology of Cymbella latarea is characteristic in having typical biseriate striae and bisected apical pore fields. In these three species, internally, the stigmata are continuous with the striae and appear as simple and only weakly separated structures at the end of the striae. The three species are also characterized by differences in the number of areola rows per stria externally and internally.","PeriodicalId":55149,"journal":{"name":"Fottea","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2020-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48128342","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Valve ultrastructure of two species of the diatom genus Gomphonema Ehrenberg (Bacillariophyta) from Yunnan Province, China 云南两种埃伦伯格硅藻属（硅藻门）的瓣膜超微结构

IF 2.2 3区生物学

Fottea Pub Date : 2020-04-01 DOI: 10.5507/fot.2019.012

Yan Liu, J. Kociolek, Xinxin Lu, Yawen Fan

引用次数: 5

Quo vadis, taxonomy of cyanobacteria (2019) 库瓦迪斯，蓝藻分类学（2019）

IF 2.2 3区生物学

Fottea Pub Date : 2020-04-01 DOI: 10.5507/fot.2019.020

J. Komárek

引用次数: 16

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