Description of a New Species ofSternomoera(Crustacea: Amphipoda: Pontogeneiidae) from Japan, with an Analysis of the Phylogenetic Relationships Among the Japanese Species Based on the 28S rRNA Gene

2014 ◽  
Vol 31 (7) ◽  
pp. 475-490 ◽  
Author(s):  
Ko Tomikawa ◽  
Norio Kobayashi ◽  
Masaki Kyono ◽  
Shin-ichi Ishimaru ◽  
Mark J. Grygier
Keyword(s):  
New Species ◽  
Phylogenetic Relationships ◽  
Rrna Gene ◽  
28S Rrna ◽  
Japanese Species ◽  
28S Rrna Gene ◽  
A New Species

Descriptions of Trichodorus lownsberyi sp. n., Nanidorus minor (Colbran, 1956) Siddiqi, 1974 (Nematoda: Trichodoridae) and Longidorus quercus sp. n. (Nematoda: Longidoridae) from Mexico

Nematology ◽  
2021 ◽  
pp. 1-15
Author(s):  
Ignacio Cid del Prado Vera ◽  
Sergei A. Subbotin ◽  
Wilfrida Decraemer
Keyword(s):  
New Species ◽  
Phylogenetic Relationships ◽  
Phylogenetic Trees ◽  
The Body ◽  
Rrna Gene ◽  
28S Rrna ◽  
Gene Sequences ◽  
28S Rrna Gene ◽  
Buxus Sempervirens ◽  
Stubby Root Nematode

Summary A new species of stubby root nematode, Trichodorus lownsberyi sp. n., collected from soil around Buxus sempervirens at Montecillo Campus, Colegio de Postgraduados, Mexico, is described and illustrated. Trichodorus lownsberyi sp. n. is characterised by the abundant males with a characteristic spicule shape, the narrower part about mid-blade having visible bristles in most specimens, and the presence and position of the three ventromedian cervical papillae, which are all anterior to the secretory-excretory pore. Females possess a rhomboid-shaped vagina and oval to rounded triangular vaginal sclerotised pieces with a pore-like vulva. The phylogenetic relationships of T. lownsberyi sp. n. with related species were constructed using the ITS2 rRNA and the D2-D3 expansion segments of 28S rRNA gene sequences. Trichodorus lownsberyi sp. n. was a sister species to T. viruliferus in the phylogenetic trees. A Mexican population of Nanidorus minor from a peach orchard is also described and illustrated. The new needle nematode, Longidorus quercus sp. n., was recovered from soil around roots of oak, Quercus crassipes, from Cerro Jusda ‘El Diablo’ in Mexico State. Longidorus quercus sp. n. females are characterised by the C-shaped posterior end of the body after fixation, L = 4.9 (3.9-5.6) mm, a = 71 (60.8-93.2), lip region rounded, sometimes slightly flattened, marked by depression, odontostylet 170 (144-206) μm long, hemispherical to bluntly conoid tail and no males. The new species was characterised using the D2-D3 of 28S rRNA and COI gene sequences. The phylogenetic relationships of L. quercus sp. n. with other Longidorus species were reconstructed using the D2-D3 of 28S rRNA gene sequences.

A new cyst nematode, Cactodera torreyanae sp. n. (Tylenchida: Heteroderidae), parasitising romerito, Suaeda torreyana, in Texcoco, Mexico

Nematology ◽  
2014 ◽  
Vol 16 (2) ◽  
pp. 163-174 ◽  
Author(s):  
Ignacio Cid Del Prado Vera ◽  
Sergei A. Subbotin
Keyword(s):  
New Species ◽  
Phylogenetic Relationships ◽  
Cyst Nematode ◽  
Saline Soils ◽  
Rrna Gene ◽  
28S Rrna ◽  
Cyst Size ◽  
Second Stage ◽  
Its Rrna Gene ◽  
A New Species

A new species of cyst nematode, Cactodera torreyanae sp. n., parasitising romerito plants, Suaeda torreyana (Chenopodiaceae), found in highly saline soils in Texcoco, Mexico, is described. The new species is morphologically and molecularly related to C. weissi, from which it differs in smaller fenestral diam., longer body and shorter tail lengths of second-stage juveniles (J2) and to C. rosae, from which it differs in smaller cyst size, longer body length of J2 and the presence of a smooth eggshell surface. Phylogenetic relationships within populations and species of the Punctoderinae and Cactodera are given based on the analysis of the D2-D3 expansion segments of 28S rRNA and the ITS rRNA gene sequences.

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.

scholarly journals Molecular and morphological characterisation of Xiphinema granatum n. sp. and Longidorus pisi Edward, Misra & Singh, 1964 (Dorylaimida: Longidoridae) from Iran

Nematology ◽  
2012 ◽  
Vol 14 (8) ◽  
pp. 949-960 ◽  
Author(s):  
Majid Pedram ◽  
Ebrahim Pourjam ◽  
Juan E. Palomares-Rius ◽  
Razieh Ghaemi ◽  
Carolina Cantalapiedra-Navarrete ◽  
...  
Keyword(s):  
New Species ◽  
Species Group ◽  
Rrna Gene ◽  
28S Rrna ◽  
Morphometric Data ◽  
Molecular Analyses ◽  
Morphological Characterisation ◽  
28S Rrna Gene ◽  
Close Relationship ◽  
Female Genital

Xiphinema granatum n. sp. from pomegranate in Saveh, Markazi province, central Iran, is described and illustrated. The new species belongs to species group 8 of the genus Xiphinema sensu Loof & Luc, 1990. The new species is characterised by a body 3.5-4.1 mm long, 37-49 μm diam., odontostyle and odontophore 118-132 and 65-74 μm long, respectively, presence of sperm in the female genital tracts, uterus devoid of any Z-differentiation or spines, and abundant males with spicules 45-58 μm long. The polytomous identification codes of the new species are: A4, B4, C5a, D5, E56, F4, G23, H2, I3, J4, K2, L2. Beside morphological and morphometric data, molecular analyses of D2-D3 fragments of 28S rRNA gene placed the new species in close relationship with X. vuittenezi and X. italiae and some species belonging to Xiphinema morphospecies group 6, but clearly separated from X. index. In addition, an Iranian population of Longidorus pisi from the same locality is morphologically and molecularly characterised.

Placement of Cacoceria and phylogenetic relationships of the xylotine genera of the tribe Milesiini (Diptera, Syrphidae: Eristalinae) based on molecular characters

Zootaxa ◽  
2006 ◽  
Vol 1171 (1) ◽  
pp. 17 ◽  
Author(s):  
GUNILLA STÅHLS
Keyword(s):  
Intraspecific Variation ◽  
Phylogenetic Relationships ◽  
Rrna Gene ◽  
28S Rrna ◽  
Large Fragment ◽  
Mitochondrial Coi ◽  
Phylogenetic Placement ◽  
28S Rrna Gene ◽  
Molecular Characters

The phylogenetic relationships of traditional xylotine genera of tribe Milesiini (Diptera, Syrphidae: Eristalinae) were explored using molecular character of a large fragment of the mitochondrial COI and the D2-3 region of the nuclear ribosomal 28S rRNA gene. Of particular interest was the phylogenetic placement of the enigmatic Neotropical genus Cacoceria. The ingroup included 48 taxa, and Cheilosia illustrata (Rhingiini, Eristalinae) was used as outgroup. Multiple specimens of more common taxa were sequenced for surveying levels of intraspecific variation. The combined dataset was analysed using parsimony and optimisation alignment, using the program POY. Cacoceria was resolved within the Chalcosyrphus clade. Earlier hypotheses placed the taxon in the tribe Myoleptini or Chrysogasterini, or in Xylotini without stating a closer relationship to any particular xylotine taxon. The representatives of traditional xylotine taxa were resolved as ((Hadromyia + (Brachypalpoides + Blera + Lejota) + (Xylota sg. Hovaxylota + Xylota sg. Sterphoides) + (Xylota (including Sterphus)) while Neplas and Brachypalpus were resolved in the Myoleptini albeit with very low support.

Morphological and molecular characterisation of Tylencholaimellus zeinabadensis sp. n. (Dorylaimida: Tylencholaimellidae) from Iran, with additional data on five known species of the genus

Nematology ◽  
2019 ◽  
Vol 21 (6) ◽  
pp. 597-612
Author(s):  
Nasir Vazifeh ◽  
Gholamreza Niknam ◽  
Habibeh Jabbari ◽  
Arezoo Naghavi ◽  
Reyes Peña-Santiago
Keyword(s):  
New Species ◽  
Additional Data ◽  
Rrna Gene ◽  
28S Rrna ◽  
Molecular Characterisation ◽  
Gene Sequences ◽  
Pharyngeal Bulb ◽  
Molecular Analyses ◽  
28S Rrna Gene ◽  
Region 10

Summary Six species of the genus Tylencholaimellus, one new and five known, collected in virgin and cultivated soils of East Azarbaijan province, Iran, are studied. Tylencholaimellus zeinabadensis sp. n. is morphologically characterised by its 1.2-1.7 mm long body, lip region 10-13 μm wide and offset by deep and broad constriction, odontostyle 16-20 μm long, stylet 22-30 μm long, neck 186-234 μm long, pharyngeal bulb 30-43 μm long, anterior uterine sac 55-103 μm long or 0.9-1.7 corresponding body diam. long, V = 34-41, tail short and rounded to conoid (20-30 μm, c = 45-83, c′ = 0.5-1.0), spicules 39-50 μm long, and one or two ventromedian supplements with hiatus. Molecular analyses using the D2-D3 expansion regions of the 28S rRNA gene sequences of the new species confirmed the monophyly of this genus based upon currently available data. A population of T. affinis is described and illustrated, and new data (morphometrics, pictures and distribution) are provided for T. loofi, T. paracinctus, T. polonicus and T. striatus.

scholarly journals A taxonomic review of the Palpada ruficeps species group, with the description of a new flower fly from Colombia (Diptera: Syrphidae)

Zootaxa ◽  
2008 ◽  
Vol 1741 (1) ◽  
pp. 31 ◽  
Author(s):  
XIMO MENGUAL ◽  
F. CHRISTIAN THOMPSON
Keyword(s):  
New Species ◽  
Cytochrome C Oxidase ◽  
Internal Transcribed Spacer ◽  
Species Group ◽  
Coi Gene ◽  
Rrna Gene ◽  
28S Rrna ◽  
Mitochondrial Cytochrome ◽  
Flower Flies ◽  
A New Species

A new species of flower flies, Palpada prietorum Mengual spec. nov. (Diptera: Syrphidae: Eristalinae) is described from Cali, Colombia. The new species belongs to the ruficeps subgroup in the vinetorum species group. An identification key is provided for the species of the ruficeps subgroup, as well as a comparison of morphological diagnostic characters to separate these taxa. Fragments of the mitochondrial cytochrome c oxidase subunit I (COI) gene, the D2-3 region of the nuclear 28S rRNA gene and the nuclear internal transcribed spacer (ITS2) are supplied for two species, Palpada prietorum spec. nov. and Palpada ruficeps (Macquart, 1842).

A new species of deropristid trematode from the sterlet Acipenser ruthenus (Actinopterygii: Acipenseridae) and revision of superfamily affiliation of the family Deropristidae

2020 ◽  
Vol 190 (2) ◽  
pp. 448-459 ◽  
Author(s):  
Sergey Sokolov ◽  
Ekaterina Voropaeva ◽  
Dmitry Atopkin
Keyword(s):  
New Species ◽  
Dorsal Side ◽  
The Body ◽  
Phylogenetic Study ◽  
Rrna Gene ◽  
28S Rrna ◽  
Acipenser Ruthenus ◽  
The Family ◽  
A New Species ◽  
Sterlet Acipenser Ruthenus

Abstract A new species, Skrjabinopsolus nudidorsalis sp. nov. is described from the sterlet Acipenser ruthenus, caught in the River Volga basin (Russia). This species differs from previously described congeners by the absence of vitelline follicles on the dorsal side of the body. The complete 18S rRNA and partial 28S rRNA gene sequences obtained for S. nudidorsalis are the first molecular data for the family Deropristidae. The results of phylogenetic analysis indicate that Deropristidae is sister to the Monorchiidae + Lissorchiidae group. The results of the phylogenetic study contradict the current taxonomic hypothesis that Deropristidae belongs to the superfamily Lepocreadioidea and allow inclusion of this family in Monorchioidea. The morphological similarity of deropristids to other monorchioids is recognizable from the presence of a bipartite internal seminal vesicle, spinous cirrus and a voluminous, armed metraterm.

Sign in / Sign up

Export Citation Format

Share Document