scholarly journals A new species of Cryptomonas (Cryptophyceae) from the Western Urals (Russia)

2020 ◽  
Author(s):  
Nikita A. Martynenko ◽  
Evgeniy S. Gusev ◽  
Pavel V. Kulizin ◽  
Elena E. Guseva ◽  
Kevin McCartney ◽  
...  
Keyword(s):  
New Species ◽  
Molecular Data ◽  
Lsu Rdna ◽  
Nuclear Rdna ◽  
Ural Mountains ◽  
Rdna Its2 ◽  
Rdna Sequences ◽  
Compensatory Base Changes ◽  
Morphological And Molecular Data ◽  
A New Species

A new species, Cryptomonas uralensis Martynenko, Gusev, Kulizin & Guseva sp. nov., is described from western slopes of the Ural Mountains (Russia) based on morphological and molecular data. Phylogenetic relationships inferred from nuclear SSU and LSU rDNA sequences show that the new species forms a clade with C. tetrapyrenoidosa Skuja emend. Hoef-Emden & Melkonian. Comparison of secondary structures of nuclear rDNA ITS2, including analysis of Compensatory Base Changes (CBC), confirms the separation between C. uralensis sp. nov. and C. tetrapyrenoidosa. Cell morphology and sizes of C. uralensis sp. nov. are very similar to C. tetrapyrenoidosa and C. pyrenoidifera, and C. uralensis sp. nov. may thus represent a species that can only be reliably identified using molecular data.

DESCRIPTION OF MUCOR PERNAMBUCOENSIS (MUCORALES, MUCOROMYCOTA), A NEW SPECIES ISOLATED FROM THE BRAZILIAN UPLAND RAINFOREST

Phytotaxa ◽  
2018 ◽  
Vol 350 (3) ◽  
pp. 274 ◽  
Author(s):  
CATARINA L. F. DE LIMA ◽  
DIOGO X. LIMA ◽  
CARLOS A. F. DE SOUZA ◽  
RAFAEL J. V. DE OLIVEIRA ◽  
INGRID B. CAVALCANTI ◽  
...  
Keyword(s):  
New Species ◽  
Molecular Data ◽  
Lsu Rdna ◽  
Rdna Sequences ◽  
A New Species

The Mucor genus mostly comprises saprobe specimens which are commonly isolated from herbivore dung, fruit and soil. Morphologically, Mucor specimens produce simple or branched sporangiophores without basal rhizoids and non-apophysate sporangia. During a survey of Mucorales in soil from an upland rainforest area in Pernambuco, Brazil, one specimen of Mucor was isolated and characterized based on morphological, physiological and molecular data (ITS1-5.8S-ITS2 and LSU rDNA sequences). The specimen is characterized by producing strongly sympodially branched sporangiophores and sporangiospores which can contain one or more granules at each end. The columellae are frequently globose or obovoid, some ovoid or cylindrical with a truncate base, rarely piriform.  It grew better at 25ºC, with no development at 35ºC. Based on the evidence of the analyzed datasets, a new species of Mucor is proposed.

Combining morphological and molecular data to classify Laxus sakihariiae sp. n., a new stilbonematine nematode (Nematoda: Desmodoridae) from the coast of Sesoko Island, Japan

Nematology ◽  
2018 ◽  
Vol 20 (1) ◽  
pp. 81-95 ◽  
Author(s):  
Daniel Leduc ◽  
Frederic Sinniger
Keyword(s):  
New Species ◽  
Phylogenetic Analyses ◽  
Morphological Characters ◽  
Molecular Data ◽  
Diagnostic Feature ◽  
Lsu Rdna ◽  
Rdna Sequences ◽  
Molecular Phylogenetic ◽  
Simple Body ◽  
Morphological And Molecular Data

Because of their relatively simple body plan, the number of morphological characters used to differentiate between closely related nematode genera is often limited. In addition, boundaries among genera sometimes become blurred due to the appearance of new trait combinations as more new species are described. Molecular phylogenetic analyses can address the shortcomings of morphological taxonomy by clarifying relationships among closely related species and genera and can help identify which morphological characters are taxonomically informative. Here, we describeLaxus sakihariiaesp. n. from shallow subtidal sands on Sesoko Island in the Okinawa prefecture, investigate phylogenetic relationships with other stilbonematine species and genera based on SSU rDNA sequences, and provide the first LSU rDNA sequence for the subfamily. The new species can be easily distinguished from all other species of the genus by the presence in the male of subventral and ventral rows of stout and spine-like setae in the pre- and postcloacal regions. This feature suggests affinities with the closely related genusLeptonemella, although the SSU consensus tree clearly shows that the new species forms a monophyletic clade together with the otherLaxusspecies for which sequences are available. The structure of the cephalic capsule inL. sakihariiaesp. n., which consists of a block layer between the median and basal zones of the cephalic cuticle, is consistent with the placement of this species. This trait is not currently used as a diagnostic feature, but our finding suggests that the structure of the cephalic capsule may be taxonomically useful for differentiating between some stilbonematine genera.

Description of Backusella constricta sp. nov. (Mucorales, ex Zygomycota) from the Brazilian Atlantic Rainforest, including a key to species of Backusella

Phytotaxa ◽  
2016 ◽  
Vol 289 (1) ◽  
pp. 59 ◽  
Author(s):  
DIOGO X. LIMA ◽  
KERSTIN VOIGT ◽  
CARLOS A.F. DE SOUZA ◽  
RAFAEL J.V. DE OLIVEIRA ◽  
CRISTINA M. SOUZA-MOTTA ◽  
...  
Keyword(s):  
New Species ◽  
Phylogenetic Analyses ◽  
Molecular Data ◽  
Atlantic Rainforest ◽  
Lsu Rdna ◽  
Key To Species ◽  
Simultaneous Production ◽  
Rdna Sequences ◽  
A New Species ◽  
Brazilian Atlantic Rainforest

The Backusella genus comprises mucoralean saprobes that inhabit in mainly soil and form transitorily curved (when young, erect at maturity) sporangiophores arising directly from the substratum, with simultaneous production of both sporangia and sporangiola. During a study of Mucorales in soil from an Atlantic Rainforest in Pernambuco, Brazil, one specimen of Backusella was isolated and characterized based on morphological, physiological and molecular data (ITS1-5.8S-ITS2 and LSU rDNA sequences). The phylogenetic analyses of the isolate revealed that it belongs to the Backusellaceae and is closely related to species of Backusella. The specimen grew better at 25ºC, with no development at 40ºC, and presented conical and cylindrical columellae possessing a central constriction as well as subglobose sporangiospores 7.5–15 × 5.5–10 µm. Based on the evidences of the analyzed datasets, a new species of Backusella is proposed and a taxonomic key for the species of this genus is provided.

A new species of Cynomops (Chiroptera: Molossidae) from the northwestern slope of the Andes

Mammalia ◽  
2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Daniela Arenas-Viveros ◽  
Pamela Sánchez-Vendizú ◽  
Alan Giraldo ◽  
Jorge Salazar-Bravo
Keyword(s):  
Phylogenetic Analysis ◽  
New Species ◽  
Molecular Data ◽  
Mtdna Sequences ◽  
The Andes ◽  
Western Side ◽  
Morphological And Molecular Data ◽  
A New Species ◽  
Lines Of Evidence

Abstract The systematics and taxonomy of the broadly distributed bats of the genus Cynomops has changed considerably in the last few years. Among the major changes, Cynomops abrasus was split into two species of large-bodied forms (Cynomops mastivus and C. abrasus) distributed east of the Andes. However, large Colombian specimens identified as C. abrasus from the western side of the Andes had yet to be included in any revisionary work. Phylogenetic analysis performed in this study, using mtDNA sequences (Cytochrome-b), revealed that these Colombian individuals are more closely related to Cynomops greenhalli. Morphological and molecular data allowed us to recognize populations from western Colombia, western Ecuador and northwestern Peru, as members of a new species of Cynomops. Characters that allow for its differentiation from C. greenhalli include a larger forearm, paler but more uniform ventral pelage, more globular braincase, and well-developed zygomatic processes of the maxilla (almost reaching the postorbital constriction). This study serves as another example of the importance of including multiple lines of evidence in the recognition of a new species. Given its rarity and the advanced transformation of its habitat, this new species is particularly important from a conservation perspective.

Description of a new species of Auriculostoma (Digenea: Allocreadiidae) from Characidium heirmostigmata (Characiformes: Crenuchidae) from Argentina, using morphological and molecular data

2021 ◽  
Vol 95 ◽  
Author(s):  
M.M. Montes ◽  
J. Barneche ◽  
Y. Croci ◽  
D. Balcazar ◽  
A. Almirón ◽  
...  
Keyword(s):  
Phylogenetic Analysis ◽  
New Species ◽  
National Park ◽  
Molecular Data ◽  
Rrna Gene ◽  
28S Rrna ◽  
The Family ◽  
Parasitological Survey ◽  
Morphological And Molecular Data ◽  
A New Species

Abstract During a parasitological survey of fishes at Iguazu National Park, Argentina, specimens belonging to the allocreadiid genus Auriculostoma were collected from the intestine of Characidium heirmostigmata. The erection of the new species is based on a unique combination of morphological traits as well as on phylogenetic analysis. Auriculostoma guacurarii n. sp. resembles four congeneric species – Auriculostoma diagonale, Auriculostoma platense, Auriculostoma tica and Auriculostoma totonacapanensis – in having smooth and oblique testes, but can be distinguished by a combination of several morphological features, hosts association and geographic distribution. Morphologically, the new species can be distinguished from both A. diagonale and A. platense by the egg size (bigger in the first and smaller in the last); from A. tica by a shorter body length, the genital pore position and the extension of the caeca; and from A. totonacapanensis by the size of the oral and ventral sucker and the post-testicular space. Additionally, one specimen of Auriculostoma cf. stenopteri from the characid Charax stenopterus (Characiformes) from La Plata River, Argentina, was sampled and the partial 28S rRNA gene was sequenced. The phylogenetic analysis revealed that A. guacurarii n. sp. clustered with A. tica and these two as sister taxa to A. cf. stenopteri. The new species described herein is the tenth species in the genus and the first one parasitizing a member of the family Crenuchidae.

A New Species of Cudonia Based on Morphological and Molecular Data

Mycologia ◽  
2002 ◽  
Vol 94 (4) ◽  
pp. 641 ◽  
Author(s):  
Zheng Wang ◽  
Manfred Binder ◽  
David S. Hibbett
Keyword(s):  
New Species ◽  
Molecular Data ◽  
Morphological And Molecular Data ◽  
A New Species

First record of the Cyrtodactylus brevipalmatus group (Squamata: Gekkonidae) from Vietnam with description of a new species

Zootaxa ◽  
2021 ◽  
Vol 4969 (3) ◽  
pp. 492-510
Author(s):  
DZUNG TRUNG LE ◽  
SALY SITTHIVONG ◽  
TUNG THANH TRAN ◽  
L. LEE GRISMER ◽  
TRUONG QUANG NGUYEN ◽  
...  
Keyword(s):  
New Species ◽  
First Record ◽  
Molecular Data ◽  
Species Group ◽  
Molecular Analyses ◽  
Hind Limbs ◽  
Morphological And Molecular Data ◽  
Dorsal Pattern ◽  
A New Species ◽  
Dorsal Tubercle

A new species of the genus Cyrtodactylus is described from Dien Bien Province, northwestern Vietnam based on morphological and molecular data. Cyrtodactylus ngati sp. nov. can be distinguished from remaining congeners by the following combination of characters: maximum SVL 69.3 mm; dorsal pattern consisting of six dark irregular transverse bands between limb insertions; inter-supranasals one; dorsal tubercles present on occiput, body, hind limbs and on first half of tail; 17–22 irregular dorsal tubercle rows at midbody; lateral folds clearly defined, with interspersed tubercles; 32–38 ventral scales between ventrolateral folds; 13 precloacal pores separated by a diastema of 5/5 poreless scales from a series of 7/7 femoral pores in enlarged femoral scales; precloacal and femoral pores absent in females; 1–3 postcloacal tubercles on each side; transversely enlarged median subcaudal scales absent. In the molecular analyses, the new species is shown to be the sister taxon to C. interdigitalis from Thailand. This is the 47th species of the genus Cyrtodactylus and the first member of the C. brevipalmatus species group recorded from Vietnam. 

Cymbidium xichouense (Orchidaceae; Epidendroideae), a new species from China: evidence from morphological and molecular data

Phytotaxa ◽  
2021 ◽  
Vol 484 (3) ◽  
pp. 291-297
Author(s):  
XINYU XU ◽  
CHANG-CHUN DING ◽  
WENQI HU ◽  
XIA YU ◽  
YU ZHENG ◽  
...  
Keyword(s):  
New Species ◽  
Yunnan Province ◽  
Phylogenetic Analyses ◽  
Plastid Dna ◽  
Molecular Data ◽  
Morphological Evidence ◽  
The Status ◽  
Nuclear Its ◽  
Morphological And Molecular Data ◽  
A New Species

A new species of Cymbidium (Orchidaceae), Cymbidium xichouense, from Yunnan Province, China, is described and illustrated based on morphological evidence and molecular analyses. The new orchid is morphologically similar to C. qinbeiense, but it has several morphological features that distinguish it from C. qiubeinense and all other recognized species in Cymbidium. Phylogenetic analyses based on nuclear (ITS) and plastid DNA (matK) were conducted, and the results also supported the status of C. xichouense as a new species, which is sister to C. qiubeiense.

Sphaerosporella microspora (Pyronemataceae, Pezizales), a novel species from Southern China

Phytotaxa ◽  
2021 ◽  
Vol 520 (1) ◽  
pp. 87-96
Author(s):  
YAN-LIU CHEN ◽  
XUE-YU PAN ◽  
JIE SONG ◽  
JUN-FENG LIANG
Keyword(s):  
New Species ◽  
Novel Species ◽  
Southern China ◽  
Fruit Body ◽  
Molecular Data ◽  
Ectal Excipulum ◽  
Morphological And Molecular Data ◽  
A New Species

Sphaerosporella microspora is described as a new species based on morphological and molecular data. It is characterized by its sessile apothecia, surface smooth, ectal excipulum composed of cylindrical and angular cells, globose and smooth ascospores, and unmodified paraphyses. A detailed description, photographs of the fruit body and microstructure diagrams are provided.

Sign in / Sign up

Export Citation Format

Share Document