The genus Oigolaimella Paramonov, 1952 (Nematoda: Diplogastridae) and description of O. kruegeri n. sp. and O. ninae n. sp.

Nematology ◽  
2003 ◽  
Vol 5 (4) ◽  
pp. 583-600 ◽  
Author(s):  
Alexander Fürst von Lieven

AbstractOigolaimella kruegeri n. sp. and Oigolaimella ninae n. sp. are described. Oigolaimella kruegeri n. sp. males can be recognised by the lack of the gubernacular keel characteristic of other Oigolaimella species and by the modified distribution pattern of the genital sensillae. Oigolaimella ninae n. sp. can be recognised and distinguished from the other members of the genus by the refractive cuticularised ring formed by the anterior edge of the cheilostomatal collar. Oigolaimella longicauda (Claus, 1862) n. comb. is accepted as a valid species, regarded as a senior synonym of O. agilis (Skwarra, 1921) and redescribed. Oigolaimella diplogaster (von Linstow, 1890) n. comb. is proposed. The phylogenetic relationship of Oigolaimella is discussed and an ecological characterisation of the taxon given on the basis of observations on feeding behaviour and locomotion in the habitat.

Zootaxa ◽  
2018 ◽  
Vol 4459 (2) ◽  
pp. 201 ◽  
Author(s):  
ANDRÉ WANDERLEY DO PRADO ◽  
RENNER LUIZ CERQUEIRA BAPTISTA ◽  
MIGUEL MACHADO

The genus Epicadinus Simon, 1895 can easily be distinguished from the other Neotropical Stephanopines by their abundant and robust setiferous tubercles, topped by elongated macrosetae, which cover most of the tegument. Additionally, the genus can be recognized by a pair of conical ocular mounds above the ALE, the anterior eye row very recurved, posterior one slightly procurved; carapace flattened and without tubercles, and opisthosoma with three conical projections (“tubercles”) of variable size and shape. This work is a taxonomic review of the 12 valid species of Epicadinus as listed in version 19 of the World Spider Catalogue (2018), whose hitherto known distribution included few records from Brazil, French Guiana, Bolivia and Peru, and only one from Mexico. Four valid species are recognized: Epicadinus biocellatus Mello-Leitão, 1929; E. trispinosus (Taczanowski, 1872) [with two junior synonyms E. trifidus (Pickard-Cambridge, 1893) syn. nov. and E. cornutus (Taczanowski, 1872) syn. nov.]; E. spinipes (Blackwall, 1862) [with two junior synonyms E. albimaculatus Mello-Leitão, 1929 syn. nov. and E. gavensis Soares, 1946 syn. nov]; and E. villosus [with two junior synonyms E. helenae Piza, 1936 syn. nov. and E. marmoratus Mello-Leitão, 1947 syn. nov.]. Epicadinus polyophthalmus Mello-Leitão, 1929 and Epicadinus tuberculatus Petrunkevitch, 1910 are transferred to Epicadus. Epicadus polyophthalmus (Mello-Leitão, 1929) comb. nov. is considered a nomen dubium. Epicadus tuberculatus (Petrunkevitch, 1910) comb. nov. is a senior synonym of Epicadus pustulosus (Mello-Leitão, 1929) syn. nov. 


Zootaxa ◽  
2010 ◽  
Vol 2642 (1) ◽  
pp. 53
Author(s):  
SAMMY DE GRAVE ◽  
ARTHUR ANKER

Alpheus praecox Herrick, 1888, previously regarded as nomen nudum, nomen dubium or a possible senior synonym of Synalpheus brevicarpus (Herrick, 1891), is shown to be a senior synonym of Synalpheus pectiniger Coutière, 1909. However, because A. praecox has not been used as a valid name since 1899, whereas S. pectiniger on the other hand appeared as valid species in at least 29 publications signed by numerous authors, A. praecox is herewith designated nomen oblitum, with S. pectiniger becoming nomen protectum.


2020 ◽  
Vol 10 (1) ◽  
Author(s):  
B. Schneider ◽  
B. Hüttel ◽  
C. Zübert ◽  
M. Kube

AbstractA recent survey in Germany revealed the wide presence of ‘Candidatus Phytoplasma ulmi’ in native elm stands. Accessions were studied for their genetic variability and phylogenetic relationship based on the conserved groEL and the variable imp gene. While the groEL sequences revealed a high intraspecific homology of more than 99%, the homology of the imp gene dropped to 71% between distantly related sequences. Twenty-nine groEL and 74 imp genotypes were distinguished based on polymorphic sites. Phylogenetic analysis of the groEL gene clustered all ‘Ca. P. ulmi’ strains and separated them from related phytoplasmas of the 16SrV group. The inferred phylogeny of the imp gene resulted in a different tree topology and separated the ‘Ca. P. ulmi’ genotypes into two clusters, one closely related to the flavescence dorée phytoplasma strain FD-D (16SrV-D), the other affiliated with the flavescence dorée phytoplasma strains FD-C and FD70 and the alder yellows phytoplasma (16SrV-C). In both phylograms, ‘Ca. P. ulmi’ genotypes from Scots elm trees formed a coherent cluster, while genotypes from European white elms and field elms grouped less strictly. The regional distribution pattern was congruent for some of the groEL and imp genotypes, but a strict linkage for all genotypes was not apparent.


2019 ◽  
Vol 21 (2) ◽  
pp. 49-68
Author(s):  
Cecilia Șerban ◽  
Gabriela Grigoraş

Abstract The current study completed the information regarding the phenotypic variability in the Danube ruffe (Gymnocephalus baloni). We also assessed the phylogenetic relationship of G. baloni with the other two species of the genus Gymnocephalus from the Lower Danube River. Ten morphological characters were the most useful together for discriminating between G. baloni and G. cernua from the Lower Danube River. In addition, we found a more streamlined body shape in G. baloni compared with the described holotype, which could be in connection with fish phenotypic response to ecological characteristics of the Lower Danube River.


2021 ◽  
Author(s):  
Masahiro Suzuki ◽  
Chihiro Norizuki ◽  
Jun-ichi Wachino ◽  
Kumiko Kawamura ◽  
Noriyuki Nagano ◽  
...  

Phylogenetic relationship of 97 I1 plasmids harboring blaCTX-M genes encoding extended-spectrum beta-lactamase (ESBL) was analyzed using the ORF-based binarized structure network analysis of plasmids (OSNAp). The majority of plasmids carrying blaCTX-M-1 or blaCTX-M-8, ESBL genes primarily associated with domestic animals, were clonal. On the other hand, plasmids carrying bla>CTX-M-14 or bla>CTX-M-15, identified from both humans and domestic animals, were diverse in their contents. The findings suggest that circulation of I1 plasmids among humans and animals may contribute to their diversity.


2017 ◽  
Vol 124 (3) ◽  
pp. 201-214 ◽  
Author(s):  
R Abdel-Gaber ◽  
F Abdel-Ghaffar ◽  
S Maher ◽  
AM El-Mallah ◽  
S Al Quraishy ◽  
...  

2009 ◽  
Vol 35 (10) ◽  
pp. 1778-1790
Author(s):  
Liang LIAO ◽  
Tong-Jian LI ◽  
Zhong-Lai LIU ◽  
Hui-Sheng DENG ◽  
Ling-Ling XU ◽  
...  

Zootaxa ◽  
2009 ◽  
Vol 2243 (1) ◽  
pp. 53-56 ◽  
Author(s):  
IVAN MARIN

The palaemonoid family Anchistioididae Borradaile, 1915 includes a single genus Anchistioides Paulson, 1875 with four known valid species: Anchistioides compressus Paulson, 1875 (type species), A. willeyi (Borradaile, 1899), A. australiensis (Balss, 1921) and A. antiguensis (Schmitt, 1924). Borradaile (1915) suggested two more species within the genus Amphipalaemon Nobili, 1901 (a junior synonym of Anchisitioides Paulson), Amphipalaemon gardineri Borradaile, 1915 (= Anchistioides gardineri) and Amphipalaemon cooperi Borradaile, 1915 (= Anchistioides cooperi) which were later synonomyzed with Anchisitioides willeyi by Gordon (1935), who also suggested their conspecificity with Anchistioides australiensis. At the present time, Anchistioides australiensis is a valid species (Bruce, 1971; Chace & Bruce, 1993) based on specific morphological features such as the presence of sharp postorbital tooth, oblique distal lamela of scaphocerite and sharply produced spines on posterodorsal angles of sixth abdominal somite (see Bruce, 1971: fig. 9). The other Indo-Pacific species, Anchistioides compressus and A. willeyi, can be clearly identified by specific form of scaphocerite, the presence of a well marked blunt postorbital tubercle in A. willeyi which is absent in A. compressus (e.g., Bruce, 1971) and the number of ventral rostral teeth (3-4 large ventral rostral teeth present in A. willeyi while up to 8 small ventral rostral teeth in A. compressus (Paulson, 1875; Gordon, 1935)). Anchistioides antiguensis is clearly separated geographically being known only from the tropical Western Atlantic and Caribbean region (Schmitt, 1924; Holthuis, 1951; Wheeler & Brown, 1968; Martinez-Iglesias, 1986; Markham et al, 1990; Ramos-Porto et al, 1998; Cardoso, 2006).


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