Molecular phylogenetics reveals a species complex pattern of closely related members of genus Thelohanellus (Cnidaria: Myxosporea) from the Indian subcontinent

2021 ◽  
Vol 150 ◽  
pp. 104690
Author(s):  
Harpreet Kaur ◽  
Aditya Gupta ◽  
Rajni Attri
Keyword(s):  
Species Complex ◽  
Molecular Phylogenetics ◽  
Indian Subcontinent ◽  
Complex Pattern

scholarly journals Molecular phylogenetics and historical biogeography of the west-palearctic common toads (Bufo bufo species complex)

2012 ◽  
Vol 63 (1) ◽  
pp. 113-130 ◽  
Author(s):  
J. Garcia-Porta ◽  
S.N. Litvinchuk ◽  
P.A. Crochet ◽  
A. Romano ◽  
P.H. Geniez ◽  
...  
Keyword(s):  
Species Complex ◽  
Molecular Phylogenetics ◽  
Bufo Bufo ◽  
Historical Biogeography ◽  
The West

Integrative Taxonomy of Australian Metopia (Sarcophagidae: Miltogramminae) Reveals a New Species and Challenges Traditional Phylogeny

2020 ◽  
Vol 4 (6) ◽  
Author(s):  
Nikolas P Johnston ◽  
James F Wallman ◽  
Thomas Pape
Keyword(s):  
Phylogenetic Analysis ◽  
Species Complex ◽  
Molecular Phylogenetics ◽  
Taxonomic Revision ◽  
Integrated Approach ◽  
Integrative Taxonomy ◽  
Morphological Data ◽  
Australian Species ◽  
A New Species ◽  
Generic Relationships

Abstract A taxonomic revision of all Australian species of Metopia Meigen (Sarcophagidae: Miltogramminae) is completed using an integrated approach combining molecular and morphological data. Metopia nudibasis (Malloch) is redescribed as a species complex and a new endemic Australian species, Metopia sputnik sp. n., is described. Evidence is presented that Metopia sauteri (Townsend) is absent from Australia and this species is therefore removed from the known Australian fauna. Molecular phylogenetics is used to reconstruct interspecific and generic relationships and support morphology-based species hypotheses. Phylogenetic analysis splits Metopia Meigen into two clades, separated by Aenigmetopia Malloch, rendering the former genus nonmonophyletic. The implications of this are discussed.

On the recent designation of a neotype for the taxon Calotes versicolor (Daudin, 1802) (Reptilia: Agamidae)

Zootaxa ◽  
2017 ◽  
Vol 4317 (3) ◽  
pp. 585
Author(s):  
R. CHAITANYA ◽  
VARAD B. GIRI ◽  
V. DEEPAK
Keyword(s):  
Species Complex ◽  
Indian Subcontinent ◽  
Type Locality ◽  
Taxonomic Resolution ◽  
Widespread Species ◽  
Agamid Lizard ◽  
Taxonomic History ◽  
Calotes Versicolor

Calotes versicolor (Daudin, 1802) is a widespread species of agamid lizard found commonly in the Indian subcontinent and the Indo-Chinese region with a complicated taxonomic history (Uetz & Hosek, 2016). The type locality of this species has been debatable (Smith, 1935, Amarasinghe et al. 2009) and the recent designation of a neotype from Pondicherry by Gowande et al. (2016) though much warranted, introduces additional complications that impede a thorough taxonomic resolution of this species complex. 

scholarly journals Molecular Phylogeny, Diversity and Zoogeography of Net-Winged Beetles (Coleoptera: Lycidae)

Insects ◽  
2018 ◽  
Vol 9 (4) ◽  
pp. 154 ◽  
Author(s):  
Michal Masek ◽  
Michal Motyka ◽  
Dominik Kusy ◽  
Matej Bocek ◽  
Yun Li ◽  
...  
Keyword(s):  
East Asia ◽  
Plate Tectonics ◽  
Molecular Phylogenetics ◽  
Indian Subcontinent ◽  
Taxonomic Diversity ◽  
Current Data ◽  
Tropical Rainforests ◽  
Long Time ◽  
Turn Over ◽  
Support Relationships

We synthesize the evidence from molecular phylogenetics, extant distribution, and plate tectonics to present an insight in ancestral areas, dispersal routes and the effectiveness of geographic barriers for net-winged beetle tribes (Coleoptera: Lycidae). Samples from all zoogeographical realms were assembled and phylogenetic relationships for ~550 species and 25 tribes were inferred using nuclear rRNA and mtDNA markers. The analyses revealed well-supported clades at the rank of tribes as they have been defined using morphology, but a low support for relationships among them. Most tribes started their diversification in Southeast and East Asia or are endemic to this region. Slipinskiini and Dexorini are Afrotropical endemics and Calopterini, Eurrhacini, Thonalmini, and Leptolycini remained isolated in South America and the Caribbean after their separation from northern continents. Lycini, Calochromini, and Erotini support relationships between the Nearctic and eastern Palearctic faunas; Calochromini colonized the Afrotropical realm from East Asia and Metriorrhynchini Afrotropical and Oriental realms from the drifting Indian subcontinent. Most tribes occur in the Oriental and Sino-Japanese realms, the highest alpha-taxonomic diversity was identified in Malesian tropical rainforests. The turn-over at zoogeographical boundaries is discussed when only short distance over-sea colonization events were inferred. The lycid phylogeny shows that poor dispersers can be used for reconstruction of dispersal and vicariance history over a long time-span, but the current data are insufficient for reconstruction of the early phase of their diversification.

Molecular Phylogenetics of the Leucas Group (Lamioideae; Lamiaceae)

2009 ◽  
Vol 34 (1) ◽  
pp. 173-181 ◽  
Author(s):  
Anne-Cathrine Scheen ◽  
Victor A. Albert
Keyword(s):  
Phylogenetic Analysis ◽  
Molecular Phylogenetics ◽  
Indian Subcontinent ◽  
Plastid Dna ◽  
Morphological Features ◽  
The Other ◽  
African Lineage ◽  
Asian Species ◽  
Geographically Isolated

The genus Leucas R.Br. includes 100 recognized species ranging in distribution from Africa through the Indian subcontinent to Queensland, Australia. Morphological cladistic studies have suggested that several other genera of Lamioideae – Acrotome, Isoleucas, Leonotis, and Otostegia (pro parte) – may be closely related to Leucas, or even nested within it. Here we use phylogenetic analysis of three plastid DNA loci, the trnL–F region, trnS–G spacer, and the rps16 intron and reach similar conclusions. Many of the morphological features used to maintain Leucas since 1810 are shared ancestral (symplesiomorphic) characters. The other genera (or subgeneric group in the case of Otostegia) are therefore defined by apomorphic states. This is particularly apparent in the case of Leonotis, with its highly specialized bird-pollinated flowers, derived within a paraphyletic and insect-pollinated Leucas. Some geographically isolated groups are monophyletic, including all Asian species of Leucas, a Socotran clade, and a large African lineage.

Cryptic species and taxonomic troubles: a rebuttal of the systematic treatment of the Asian ladies’ tresses orchids (Spiranthes species; Orchidaceae) by Pace et al. (2019)

2020 ◽  
Vol 194 (3) ◽  
pp. 375-381
Author(s):  
Siddharthan Surveswaran ◽  
Vinita Gowda ◽  
Mei Sun
Keyword(s):  
Cryptic Species ◽  
Species Complex ◽  
Molecular Phylogenetics ◽  
Molecular Data ◽  
Integrative Analysis ◽  
Botanical Nomenclature ◽  
Systematic Treatment ◽  
Linnean Society ◽  
Research Article ◽  
Spiranthes Sinensis

Abstract In a recent research article by Pace et al. (2019), the authors claimed to have used information from phenology, morphology and molecular phylogenetics in their nomenclatural review of the Spiranthes sinensis complex. However, there are several scientific and botanical nomenclature issues with the Pace et al. (2019) paper in addition to its many errors and misinformation, which can be severely misleading and have the potential to affect our understanding of the highly complex Asian Spiranthes group. Here, we compare and critique their study in light of our study published prior to the article in the Botanical Journal of the Linnean Society. We suggest that the authors should have resorted to improved and new molecular data and a truly integrative analysis to support: (1) re-circumscription of the S. sinensis species complex for each of the six species they recognized, and the treatment of S. hongkongensis as a hybrid; and (2) all the new synonymies they proposed for Asian Spiranthes.

Too many species: morphometrics, molecular phylogenetics and genome structure of a Brazilian species complex in Epidendrum (Laeliinae; Orchidaceae) reveal fewer species than previously thought

2020 ◽  
Author(s):  
Edlley M Pessoa ◽  
Joel M P Cordeiro ◽  
Leonardo P Felix ◽  
Erton M Almeida ◽  
Lucas Costa ◽  
...  
Keyword(s):  
Geometric Morphometrics ◽  
Genome Size ◽  
Species Complex ◽  
Molecular Phylogenetics ◽  
Genome Structure ◽  
Dapi Staining ◽  
Canonical Variables ◽  
Floral Variation ◽  
Brazilian Species ◽  
Species Complexes

Abstract In this study, we analyse a species complex in Epidendrum, a mega-diverse Neotropical orchid genus, that is formed by the 11 Brazilian species of the E. difforme group. Although this group (c. 100 taxa) exhibits relatively high levels of floral variation, the Brazilian species are similar, making delimitation problematic. Here we combine molecular (phylogenetics), morphological (geometric morphometrics), genome size and cytogenetic (chromosome counts and CMA/DAPI staining) data to investigate circumscription of these species. Our results were interpreted by looking for congruence of the results as a means to delimit species. The studied taxa appear to be monophyletic, and karyotypically all analysed accessions were 2n = 40. Their 1C values vary from 1.99 ± 07 pg to 2.84 ± 0.12 pg. We did not find evidence for recent polyploidy or dysploidy and, apparently, these phenomena have not been important in the evolution of this species complex. On the other hand, we found high levels of polymorphism for CMA/DAPI banding, and variation in genome size appears to be positively correlated with latitude. Geometric morphometrics indicate that E. sanchezii and E. anatipedium/E. amarajiense are distinct from the remaining species, and three groups of other species can be separated using canonical variables analysis (CVA). Variation in lip shape, genome size and heterochromatin patterns of the taxa are not fully congruent with the phylogenetic analysis, but our results allowed us to delimit with full confidence four species: E. amapense, E. anatipedium (including E. amarajiense), E. pseudodifforme (including E. campaccii and E. thiagoi) and E. sanchezii. Four others will be tentatively maintained but need further study. Our results indicate that it will be necessary to reassess many of the species complexes in the genus using a similar multidisciplinary perspective to evaluate the number of taxa that should be recognized.

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