A new species of the genus Mallomonas (Chrysophyceae: Synurales), Mallomonas kuzminii sp. nov., from lake Frolikha (Russia, Baikal region)

Phytotaxa ◽  
2013 ◽  
Vol 155 (1) ◽  
pp. 66 ◽  
Author(s):  
Evgeniy Sergeevich Gusev ◽  
Maxim Sergeevich Kulikovskiy
Keyword(s):  
New Species ◽  
Baikal Region ◽  
New Taxon ◽  
Scale Morphology ◽  
East Siberia ◽  
Silica Scale ◽  
Means Of Transmission ◽  
A New Species ◽  
Scanning Electron ◽  
Lake Frolikha

Mallomonas kuzminii sp. nov. is described from an oligotrophic lake located in Russia, East Siberia, Northern Baikal region. The description is based on silica-scale morphology studied by means of transmission and scanning electron microscopy. This new species belongs to the section Mallomonas and has several types of scales with or without dome. The form of the scales, the strongly hooded V-rib, and a dome with ribs surrounded by the extensions of the anterior rib, are the main features which distinguish this new taxon from the other species of the section. 

Mallomonas gusakovii sp. nov. (Chrysophyceae, Synurales), a new species from Phu Quoc Island, Vietnam

Phytotaxa ◽  
2019 ◽  
Vol 406 (3) ◽  
pp. 199-205
Author(s):  
EVGENIY S. GUSEV ◽  
DMITRY A. KAPUSTIN ◽  
NIKITA A. MARTYNENKO ◽  
ELENA E. GUSEVA ◽  
MAXIM S. KULIKOVSKIY
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
New Species ◽  
Scale Morphology ◽  
Southern Vietnam ◽  
Silica Scale ◽  
Different Types ◽  
Means Of Transmission ◽  
A New Species ◽  
Scanning Electron

Mallomonas gusakovii sp. nov. is described from Vietnam based on silica-scale morphology studied by means of transmission and scanning electron microscopy. This species belongs to section Quadratae and is characterized by large and broad scales of three types with an internal reticulation, V-shaped rib and a forward projecting wing. Different types of the V-shaped rib in taxa from section Quadratae are discussed. Scales of Mallomonas gusakovii were found only in two sites in Phu Quoc Island, Southern Vietnam.

A new species of the genus Mallomonas (Synurales, Chrysophyceae), Mallomonas fimbriata, sp. nov.

Phytotaxa ◽  
2015 ◽  
Vol 195 (4) ◽  
pp. 291 ◽  
Author(s):  
Evgeniy Sergeevich Gusev
Keyword(s):  
New Species ◽  
Distal Part ◽  
Scale Morphology ◽  
Special Group ◽  
Silica Scale ◽  
Central Vietnam ◽  
Means Of Transmission ◽  
A New Species ◽  
Oval Body ◽  
Scanning Electron

Mallomonas fimbriata, sp. nov. is described from bog pool, located in Cam Ranh Peninsula, Khanh Hoa Province, Central Vietnam. The description is based on silica-scale morphology studied by means of transmission and scanning electron microscopy. New species has 3 types of scales: oval body scales, caudal ones with robust, long, forward pointing spines and elongated, widened to distal part apical scales. Scales are thick, 3-layered, with inner reticulation. Mallomonas fimbriata and the similar M. fenestrata form a special group with unique features of scales structure close to the sections Retrorsae and Quadratae.

Mallomonas papuensis sp. nov. (Chrysophyceae, Synurales), a new species from the high mountain bog pool in Papua province, Indonesia

Phytotaxa ◽  
2019 ◽  
Vol 402 (6) ◽  
pp. 281 ◽  
Author(s):  
DMITRY A. KAPUSTIN ◽  
EVGENIY S. GUSEV ◽  
MAXIM S. KULIKOVSKIY
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
New Species ◽  
High Mountain ◽  
Scale Morphology ◽  
Silica Scale ◽  
Means Of Transmission ◽  
A New Species ◽  
Scanning Electron

This paper describes the new species Mallomonas papuensis from a small bog pool in Papua province, Indonesia. The description is based on silica-scale morphology studied by means of transmission and scanning electron microscopy. The cells of Mallomonas papuensis are covered by three types of scales: asymmetric collar scales with forward projecting spines, rhombic body scales and oval posterior scales with short spines. The shield of all scales types lacks ornamentation. We were not able to find any specimens with bristles or isolated bristles although the small dome is visible on the collar scales. Mallomonas papuensis belongs to the section Torquatae and closely resembles M. newfoundlandicus. Distinctions from other similar taxa are discussed.

Mallomonas lamii sp. nov. (Synurales, Chrysophyceae), a new species bearing large scales described from the tropics

Phytotaxa ◽  
2019 ◽  
Vol 423 (4) ◽  
pp. 266-272 ◽  
Author(s):  
EVGENIY SERGEEVICH GUSEV ◽  
PAVEL KULIZIN ◽  
ELENA GUSEVA ◽  
NATALIA SHKURINA ◽  
MAXIM KULIKOVSKIY
Keyword(s):  
New Species ◽  
Scale Morphology ◽  
Habitat Conditions ◽  
Electron Microscopies ◽  
Silica Scale ◽  
Secondary Layer ◽  
Means Of Transmission ◽  
The Tropics ◽  
A New Species ◽  
Scanning Electron

A new species Mallomonas lamii sp. nov. is described from Vietnam based on silica-scale morphology studied by means of transmission and scanning electron microscopies. The species belongs to the Mallomonas matvienkoae complex and is characterized by large oval scales with a thick secondary layer with internal reticulation that covers the distal one-third of the scale. The scale morphology of Mallomonas lamii is very similar to that of the fossil taxon M. pleuriforamen. Scales of Mallomonas lamii were found at thirteen localities from six provinces in central and southern areas of Vietnam. The distributions and habitat conditions of the new species are summarized.

Synura korshikovii sp. nov. (Chrysophyceae, Synurales), a new species from Ukraine

Phytotaxa ◽  
2015 ◽  
Vol 233 (2) ◽  
pp. 185 ◽  
Author(s):  
Dmitry Kapustin ◽  
Evgeniy Gusev
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
New Species ◽  
Nature Reserve ◽  
Scale Morphology ◽  
Means Of Transmission ◽  
A New Species ◽  
Oval Body ◽  
Scanning Electron ◽  
Scale Types

A new species, Synura korshikovii sp. nov., is described from water reservoirs in the vicinities of Polisky Nature Reserve, Northern Ukraine, based on scale morphology studied by means of transmission and scanning electron microscopy. This species has three types of scales: spine-bearing oval body scales, spine-bearing prolonged transition scales and spineless ovate or circular caudal scales. All scale types are covered with hexagonal reticulum. The spine is clavate or cylindrical with flat apex terminating in a few rows of papillae-like teeth.

Sellaphora balashovae (Bacillariophyta), a new species from Siberian mountain Lake Frolikha (Baikal region), Russia

Phytotaxa ◽  
2018 ◽  
Vol 371 (2) ◽  
pp. 73 ◽  
Author(s):  
SVETLANA ANDREEVA ◽  
JOHN P. KOCIOLEK ◽  
EVGENIY MALTSEV ◽  
NADEZHDA DOROFEYUK ◽  
ELENA KEZLYA ◽  
...  
Keyword(s):  
New Species ◽  
Baikal Region ◽  
Molecular Data ◽  
Systematic Position ◽  
Mountain Lake ◽  
Taxonomic Assignment ◽  
Chloroplast Morphology ◽  
A New Species ◽  
Scanning Electron ◽  
Lake Frolikha

A new species, Sellaphora balashovae sp. nov., from Lake Frolikha is described based on light (LM) and scanning electron microscopy (SEM). The systematic position of this new species is determined based on molecular data. This species is placed in the genus Sellaphora based on chloroplast morphology, areolae covered by external hymenes, and uniseriate striae that are typical for the genus. Molecular data support this taxonomic assignment, and the new species is part of a monophyletic group with some other members of the genus Sellaphora. The new species is distinguishable from other Sellaphora species by its small size, valve shape, striae and areolae densities, striae orientation and distinctly large areolae bordering the sternum.

Mallomonas cattiensis, sp. nov. (Synurales, Chrysophyceae), a new species from Viet Nam

Phytotaxa ◽  
2015 ◽  
Vol 221 (2) ◽  
pp. 188 ◽  
Author(s):  
Evgeniy Sergeevich Gusev ◽  
HAI DOAN-NHU ◽  
LAM NGUYEN-NGOC
Keyword(s):  
New Species ◽  
National Park ◽  
Viet Nam ◽  
New Taxon ◽  
Silica Scale ◽  
Secondary Layer ◽  
Means Of Transmission ◽  
Cat Tien National Park ◽  
A New Species ◽  
Proximal Border

Mallomonas cattiensis, sp. nov. is described from Ta Lai reservoir, located in Cat Tien National Park (Dong Nai Province, Southeastern Viet Nam). The description is based on silica-scale morphology studied by means of transmission and scanning electron microscopy. This new species has thick, heavily silicified tripartite scales. The most remarkable features of the new taxon are thick secondary layer in form of lobate structures on the anterior flange of the scales and wide proximal border, covering the posterior flange and often overlapping the V-rib. Mallomonas cattiensis belongs to the section Mallomonas and is most morphologically similar to Mallomonas morrisonensis.

Mallomonas loricata sp. nov. (Synurales, Chrysophyceae), a new tropical species from section Planae

Phytotaxa ◽  
2021 ◽  
Vol 500 (3) ◽  
pp. 225-233
Author(s):  
EVGENIY GUSEV ◽  
NATALIYA SHKURINA ◽  
MAXIM KULIKOVSKIY
Keyword(s):  
Electron Microscopy ◽  
New Species ◽  
Tropical Species ◽  
Scale Morphology ◽  
Habitat Conditions ◽  
Similar Morphology ◽  
Silica Scale ◽  
Secondary Layer ◽  
A New Species ◽  
Scanning Electron

A new species, Mallomonas loricata sp. nov., is described from Vietnam based on silica-scale morphology studied using transmission and scanning electron microscopy. The species belongs to section Planae and has similar morphology to species from the Mallomonas matvienkoae complex. The new species is characterized by obovoid scales with a thick secondary layer with internal reticulation that covers almost whole surface of the scale. Scales of Mallomonas loricata were found at twenty-four localities of eight provinces in northern, central and southern areas of Vietnam. Scales of this new species have also been previously reported from Singapore and Malaysia. The distribution and habitat conditions of the new species are summarized.

scholarly journals Two new species of Mallomonas (Chrysophyceae: Synurales): Mallomonas temonis and Mallomonas divida

Phytotaxa ◽  
2013 ◽  
Vol 87 (1) ◽  
pp. 11 ◽  
Author(s):  
YVONNE NĚMCOVÁ ◽  
JANA KREIDLOVÁ
Keyword(s):  
Electron Microscopy ◽  
South Africa ◽  
Scanning Electron Microscopy ◽  
New Species ◽  
Scale Morphology ◽  
Table Mountain ◽  
Silica Scale ◽  
Two New Species ◽  
Means Of Transmission ◽  
Scanning Electron

This paper describes two new species of Mallomonas. Mallomonas temonis was identified in the Table Mountain Plateau, South Africa; Mallomonas divida was identified in Aquitaine, France. The descriptions are based on silica-scale morphology studied by means of transmission and scanning electron microscopy. Mallomonas temonis belongs to the section Heterospinae. A scale is surrounded by a submarginal rib connected at lateral parts by a strong, more or less transversal rib. Mallomonas divida belongs to the section Torquatae. The shield of scales is covered by regularly arranged, delicate papillae and marked by one or several rows of more distinctive papillae.

Two new species of genus Mallomonas from swamp localities in Vietnam

Phytotaxa ◽  
2020 ◽  
Vol 468 (1) ◽  
pp. 121-129
Author(s):  
EVGENIY S. GUSEV ◽  
MAXIM S. KULIKOVSKIY
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
New Species ◽  
Scale Morphology ◽  
Silica Scale ◽  
Small Scales ◽  
Two New Species ◽  
Means Of Transmission ◽  
Scanning Electron

Two new species, Mallomonas punctostriata sp. nov. and Mallomonas collucata sp. nov., are described from Vietnam based on silica-scale morphology studied by means of transmission and scanning electron microscopy. Both species inhabits swamp areas. Mallomonas punctostriata belongs to section Striatae. Its scales have unique transverse rows, consisting of papillae, resembling transverse ribs of members of section Striatae. Mallomonas collucata belongs to section Annulatae. This species has small scales with hexagonal reticulation on the shield. Mallomonas punctostriata was found in Phu Quoc Island (Kien Giang Province) and Cam Ranh Peninsula (Khanh Hoa Province). Mallomonas collucata has been observed only in one site on Phu Quoc Island.

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