Genotyping-by-Sequencing in Vigna unguiculata Landraces and Its Utility for Assessing Taxonomic Relationships

Genotyping by sequencing (GBS) was used to analyze relationships among cowpea and asparagus bean landraces from southern Italy and to assess the utility of this technology to study taxonomy in a wider panel, including V. unguiculata cultigroups, subspecies, and other Vigna species. The analysis of SNPs derived from GBS highlighted that, among the cowpea landraces, the African samples were separated from the other material, while, for the Italian landraces, a certain clustering depending on seed color/pattern was observed in the dendrogram. When examining the V. unguiculata species complex, a clear separation between the two groups of wild subspecies, i.e., the allogamous wild perennials and the perennial out/inbreds, could be observed, the former representing the more ancestral wild progenitors of V. unguiculata. The species V. vexillata appeared more closely related to V. unguiculata than to the other Vigna species analyzed.

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Redescription of Astyanax goyacensis Eigenmann, 1908 (Ostariophysi: Characiformes: Characidae)

Neotropical Ichthyology ◽

10.1590/s1679-62252009000300003 ◽

2009 ◽

Vol 7 (3) ◽

pp. 371-376 ◽

Cited By ~ 15

Author(s):

Valdener Garutti ◽

Francisco Langeani

Keyword(s):

Lateral Line ◽

Species Complex ◽

Color Pattern ◽

Caudal Peduncle ◽

Caudal Fin ◽

Black Stripe ◽

Conspicuous Feature ◽

Fin Rays ◽

Shape Pattern ◽

Eye Diameter

Astyanax goyacensis Eigenmann, 1908 is redescribed based on the holotype and 25 topotypes. The species belongs to the A. bimaculatus species complex, sharing with those species a black, horizontally ovate, humeral spot (the most conspicuous feature of this complex), two diffuse vertical brown bars in the humeral area (the first through humeral spot and the second 2-3 scales behind), and black medium caudal-fin rays. Furthermore, A. goyacensis possesses a black stripe extending along midlateral body portion, more conspicuous in alcohol preserved specimens. These characteristics allow its inclusion in the putative "black lateral stripe" sub-group of A. bimaculatus species complex. From the species of this complex it differs by the black lateral stripe shape, pattern of chromatophores on the flank, coloration of the caudal fin, scales on the lateral line, branched rays on anal fin, eye diameter, and caudal peduncle depth. Comments about the color pattern in Astyanax bimaculatus species complex are added.

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Resolving the Lourinia armata (Claus, 1866) complex with remarks on the monophyletic status of Louriniidae, Monard 1927 (Copepoda: Harpacticoida)

Zootaxa ◽

10.11646/zootaxa.5051.1.15 ◽

2021 ◽

Vol 5051 (1) ◽

pp. 346-386

Author(s):

SÜPHAN KARAYTUĞ ◽

SERDAR SAK ◽

ALP ALPER ◽

SERDAR SÖNMEZ

Keyword(s):

Comparative Evaluation ◽

Species Complex ◽

Detailed Examination ◽

The Other ◽

Phylogenetic Position ◽

Nicobar Island ◽

Other Hand ◽

The Family ◽

Close Relationship ◽

Almost All

An attempt was made to test if Lourinia armata (Claus, 1866)—as it is currently diagnosed—represents a species complex. Detailed examination and comparisons of several specimens collected from different localities suggest that L. armata indeed represents a complex of four closely related morphospecies that can be differentiated from one another by only detailed observations. One of the four species is identified as Lourinia aff. armata and the other three species are described as new to science and named as Lourinia wellsi sp. nov., L. gocmeni sp. nov., and L. aldabraensis sp. nov. Detailed review of previous species records indicates that the genus Lourinia Wilson, 1924 is distributed worldwide. Ceyloniella nicobarica Sewell, 1940, originally described from Nicobar Island and previously considered a junior subjective synonym of L. armata is reinstated as Lourinia nicobarica (Sewell, 1940) comb. nov. on the basis of the unique paddle-shaped caudal ramus seta V. It is postulated that almost all of these records are unreliable in terms of representing true Lourinia aff. armata described herein. On the other hand, the comparative evaluation of the illustrations and descriptions in the published literature indicates the presence of several new species waiting to be discovered in the genus Lourinia. It has been determined that, according to updated modern keys, the recent inclusion of the monotypic genus Archeolourinia Corgosinho & Schizas, 2013 in the Louriniidae is not justified since Archeolourinia shermani Corgosinho & Schizas, 2013 does not belong to this family but should be assigned to the Canthocamptidae. On the other hand, it has been argued that the exact phylogenetic position of the Louriniidae still remains problematic since none of the diagnostic characters supports the monophyly of the family within the Oligoarthra. It has also been argued that the close relationship between Louriniidae and Canthocamptidae is supported since both families share the homologous sexual dimorphism (apophysis) on P3 endopod. The most important characteristic that can possibly be used to define Louriniidae is the reduction of maxilliped.

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Microglanis carlae, a new species of bumblebee catfish (Siluriformes: Pseudopimelodidae) from the río Paraguay basin in Paraguay

Neotropical Ichthyology ◽

10.1590/s1679-62252008000300016 ◽

2008 ◽

Vol 6 (3) ◽

pp. 425-432 ◽

Cited By ~ 6

Author(s):

Héctor S. Vera Alcaraz ◽

Weferson J. da Graça ◽

Oscar A. Shibatta

Keyword(s):

New Species ◽

Species Complex ◽

Anterior Margin ◽

Color Pattern ◽

Caudal Peduncle ◽

Dorsal Fin ◽

Fin Ray ◽

Pectoral Spine ◽

Adipose Fin ◽

A New Species

Microglanis carlae, new species, is described from the río Paraguay basin and distinguished from its congeners by the following combination of characters: paired and anal fins mottled or with thin faint bands, trunk with dark-brown saddles, anterior margin of pectoral spine with serrations retrorse proximally and antrorse distally, tip of pectoral spine as a distinct bony point, continuous portion of lateral line reaching vertical through last dorsal-fin ray, caudal peduncle with irregularly shaped, faint to dark blotch, maxillary barbel surpassing vertical through dorsal-spine origin, and dark bar on posterior flank continuous from base of adipose fin to that of anal fin. The new species is included in the Microglanis parahybae species complex on the basis of color pattern.

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Distribution of naked amoebae in the soils of the steppe zone of Ukraine

Visnyk of Lviv University Biological series ◽

10.30970/vlubs.2020.82.14 ◽

2020 ◽

pp. 159-166

Author(s):

M. Patsyuk ◽

Keyword(s):

Cluster Analysis ◽

Multidimensional Scaling ◽

Species Complex ◽

Steppe Zone ◽

Common Species ◽

Molecular Clusters ◽

The Other ◽

Steppe Region ◽

Species Complexes ◽

Naked Amoebae

As a result of the study, in the steppe zone of Ukraine (Odessa, Mykolaiv, Kirovohrad region), 12 species of naked amoebas were identified, which according to the modern Eukaryot system belong to three molecular clusters Tubulinea Smirnov et al., 2005, Discosea Cavalier-Smith, 2004., Discoba Simpson and Hampl et al., 2009. This species Vahlkampfia sp. (1), Vahlkampfia sp. (2), Deuteramoeba mycophaga Page, 1988, Saccamoeba stagnicola Page, 1974, Vexillifera sp., Vannella sp. Ripellaplatypodia Smirnov, Nassonova, Chao et Cavalier-Smith, 2007, Cochliopodium sp. (1), Mayorella sp., Thecamoeba striata Penard, 1890, Stenamoeba stenopodia (Page, 1969) Smirnov et al., 2007, Acanthamoeba sp. (1). In the studied steppe soils, the most common were Vahlkampfia sp. (2), S. stenopodia, Vahlkampfia sp. (1), Vexillifera sp., Cochliopodium sp. (1); the least common – R. platypodia, D. mycophaga, T. striata, Mayorella sp. As a result of the cluster analysis, it was found that the largest share of common species is observed between Mykolaiv and Kirovograd regions (0.71) and Odessa and Kirovograd regions (0.53); the smallest is between the Odessa and Mykolaiv regions (0.43). According to the results of cluster analysis, the faunistic complexes of soil species of amoebae of the steppe region of Ukraine are united into two clusters: one of them being complexes characteristic of the Odessa region, and the other complexes of the Mykolaiv and Kirovograd regions. According to the results of nonparametric multidimensional scaling, it is established that the species complex of soil amoebae in the Kirovograd and Mykolaiv regions is determined by the increased soil temperature and acidity, compared to the Odessa region. As for moisture, this factor has little effect on the species complexes amoebae steppe region of Ukraine.

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A new Synbranchus (Teleostei: Synbranchiformes: Synbranchidae) from ilha de Marajó, Pará, Brazil, with notes on its reproductive biology and larval development

Neotropical Ichthyology ◽

10.1590/s1679-62252005000300001 ◽

2005 ◽

Vol 3 (3) ◽

pp. 319-328 ◽

Cited By ~ 9

Author(s):

Sandra E. Favorito ◽

Angela M. Zanata ◽

Maria I. Assumpção

Keyword(s):

New Species ◽

Larval Development ◽

Reproductive Biology ◽

Color Pattern ◽

The Other ◽

Larval Stages ◽

Marajó Island ◽

Northern Brazil

Synbranchus lampreia, new species, is described from rio Goiapi, Marajó Island, Pará, northern Brazil. It differs from the other two described species of the genus by its color pattern, which consists of large roundish black blotches scattered over a light brown or yellowish ground pigmentation and presence of inconspicuous brown small spots distributed among the large dark spots. The species is further distinguished from S. marmoratus by a higher number of vertebrae and from S. madeira by a shorter postanal length. Information about reproductive aspects is provided and larval stages are described and illustrated.

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Identification of a novel Candida metapsilosis isolate suggests ongoing hybridization.

10.1101/2021.07.15.452539 ◽

2021 ◽

Author(s):

Caoimhe E. O'Brien ◽

Bing Zhai ◽

Mihaela Ola ◽

Eoin Ó Cinnéide ◽

Ísla O'Connor ◽

...

Keyword(s):

Loss Of Heterozygosity ◽

Mating Type ◽

Small Proportion ◽

Species Complex ◽

The Other ◽

Human Pathogens ◽

Hybridization Event ◽

Candida Metapsilosis ◽

Genome Stabilization ◽

Haplotype A

Candida metapsilosis is a member of the C. parapsilosis species complex, a group of opportunistic human pathogens. Of all the members of this complex, C. metapsilosis is the least virulent, and accounts for a small proportion of invasive Candida infections. Previous studies established that all C. metapsilosis isolates are hybrids, originating from a single hybridization event between two lineages, parent A and parent B. Here, we use MinION and Illumina sequencing to characterize a C. metapsilosis isolate that originated from a separate hybridization. One of the parents of the new isolate is very closely related to parent A. However, the other parent (parent C) is not the same as parent B. Unlike C. metapsilosis AB isolates, the C. metapsilosis AC isolate has not undergone introgression at the Mating Type-like Locus. In addition, the A and C haplotypes are not fully collinear. The C. metapsilosis AC isolate has undergone Loss of Heterozygosity (LOH) with a preference for haplotype A, indicating that this isolate is in the early stages of genome stabilization.

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The Persevering Cytotaxonomy: Discovery of a Unique XX/XY Sex Chromosome System in Catfishes Suggests the Existence of a New, Endemic and Rare Species

Cytogenetic and Genome Research ◽

10.1159/000492959 ◽

2018 ◽

Vol 156 (1) ◽

pp. 45-55 ◽

Cited By ~ 2

Author(s):

Dinaíza A. Rocha-Reis ◽

Karina de Oliveira Brandão ◽

Lurdes F. de Almeida-Toledo ◽

Rubens Pazza ◽

Karine F. Kavalco

Keyword(s):

Phylogenetic Analysis ◽

Rare Species ◽

Species Complex ◽

Sex Chromosome ◽

Supernumerary Chromosome ◽

The Other ◽

Allopatric Populations ◽

Sex Chromosome System ◽

Upper Paraná River ◽

Upper Paraná River Basin

The genus Hypostomus has a broad geographic distribution in Brazilian rivers and comprises armored catfishes with a very complicated taxonomy due to the absence of morphological autapomorphies. The existence of nearly 10 allopatric populations with different karyotypes suggests that Hypostomusancistroides represents a species complex in the Upper Paraná River basin. In this paper, an unusual karyotype of an isolated H. aff. ancistroides population was investigated. All specimens of this sample have 2n = 66 chromosomes except for 1 male with 2n = 67, most likely due to a supernumerary chromosome. In this population, the sexes are dimorphic, the males are heterogametic, and an XX/XY sex chromosome system is present. Phylogenetic analysis using mitochondrial and nuclear DNAs indicated that this population forms a monophyletic group separate from the other populations of H.ancistroides and may represent an incipient species.

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Four new species of Phrynus, Lamarck (Arachnida: Amblypygi) from Mexico

Zootaxa ◽

10.11646/zootaxa.4948.2.1 ◽

2021 ◽

Vol 4948 (2) ◽

pp. 151-183

Author(s):

DANIEL CHIRIVI JOYA

Keyword(s):

New Species ◽

Species Complex ◽

Population Studies ◽

The Other ◽

Genetic Population ◽

Male And Female ◽

Taxonomic Information ◽

Species Complexes ◽

Morphologic Variation ◽

Mexican Species

Mexico is the country with the largest diversity of the genus Phrynus (Amblypygi: Phrynidae); however, many species could remain hidden due to the conservative morphology of the group. Two of the Mexican species, P. operculatus, and P. jalisco show enough variation, between populations from different localities, to be considered as possible species complexes. The scarce taxonomic information of these species and the few analyses of their variation could cause misidentifications and sub estimation of the diversity. Specimens morphologically similar to P. operculatus from different Mexican localities were analyzed, using characters from the male and female genitals. Four new species are described, presenting illustrations of SEM for the male genitals. Details of the morphologic variation in this group of species are discussed, as well as the usefulness of sexual characters like the size proportions, and sclerotization in the female gonopods, and ornaments in males, to improve the diagnoses of the Mexican Phrynus. The known distribution of P. operculatus is large in comparison with those of the other species, after the result of this research, the possibility that it is a larger species complex is evident, thus, it is necessary to increase the morphologic and genetic population studies in this group.

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