Redescription of Pelagia benovici into a new jellyfish genus, Mawia, gen. nov., and its phylogenetic position within Pelagiidae (Cnidaria : Scyphozoa : Semaeostomeae)

2016 ◽  
Vol 30 (6) ◽  
pp. 523 ◽  
Author(s):  
M. Avian ◽  
A. Ramšak ◽  
V. Tirelli ◽  
I. D'Ambra ◽  
A. Malej
Keyword(s):  
Phylogenetic Analysis ◽  
Additional Data ◽  
Common Ancestor ◽  
Cladistic Analysis ◽  
Morphological Characters ◽  
Phylogenetic Position ◽  
12S Rrna ◽  
28S Rrna ◽  
Northern Adriatic ◽  
The Family

This study provides new and additional data on morphology and a phylogenetic analysis of the recently described species Pelagia benovici Piraino, Aglieri, Scorrano & Boero, 2014 from the Northern Adriatic (Mediterranean Sea). Comprehensive morphological analyses of diagnostic characters, of which the most significant are marginal tentacles anatomy, basal pillars, gonad pattern, subgenital ostia and exumbrellar sensory pits, revealed significant differences from the currently known genera Sanderia, Chrysaora and Pelagia in the family Pelagiidae. A phylogenetic analysis of mitochondrial genes (COI, 16S rRNA, 12S rRNA) and nuclear ribosomal genes (28S rRNA, ITS1/ITS2 regions), together with cladistic analysis of morphological characters, positioned Pelagia benovici as a sister taxon with Sanderia malayensis, and both share a common ancestor with Chrysaora hysoscella. Pelagia benovici does not share a direct common ancestor with the genus Pelagia, and thus we propose it should not belong to this genus. Therefore, a new genus Mawia, gen. nov. (Semaeostomeae : Pelagiidae) is described, and Pelagia benovici is renamed as Mawia benovici, comb, nov.

Phylogenetic analysis of the rumen ciliate family Ophryoscolecidae based on 18S ribosomal RNA sequences, with new sequences fromDiplodinium,Eudiplodinium, andOphryoscolex

1997 ◽  
Vol 75 (6) ◽  
pp. 963-970 ◽  
Author(s):  
André-Denis G. Wright ◽  
Denis H. Lynn
Keyword(s):  
Phylogenetic Analysis ◽  
Ribosomal Rna ◽  
Phylogenetic Relationships ◽  
Cladistic Analysis ◽  
Morphological Characters ◽  
Small Subunit ◽  
Base Pairs ◽  
Rna Sequences ◽  
Ribosomal Rna Sequences ◽  
The Family

Phylogenetic relationships within the largest family of entodiniomorphid rumen ciliates, the Ophryoscolecidae, were inferred from comparisons of small-subunit ribosomal RNA gene sequences. These included three new sequences from Diplodinium dentatum (1638 base pairs (bp)), Eudiplodinium maggii (1637 bp), and Ophryoscolex purkynjei (1636 bp). Using morphological characters, Lubinsky constructed a cladogram of the Ophryoscolecidae, and on the basis of his analysis, he divided the family into three subfamilies (Entodiniinae, Diplodiniinae, Ophryoscolecinae) to reflect his "natural" groupings (G. Lubinsky. 1957. Can. J. Zool. 35: 141 – 159). Our cladistic analysis, based on the limited morphological and ultrastructural data available, indicates that there are no synapomorphies supporting the Diplodiniinae sensu Lubinsky. However, based upon the six 18S sequences for the Ophryoscolecidae, the rumen ciliates are monophyletic and fall into three distinct groups corresponding to Lubinsky's subfamilial division of the family. Our molecular analysis shows Entodinium to be the earliest branching rumen ciliate (subfamily Entodiniinae) and Eudiplodinium, not Diplodiium, branching first among the diplodiniines.

Phylogeny and taxonomic revision of the spider mite genera Aponychus, Paraponychus and Stylophoronychus using morphology (Acari : Tetranychidae)

2013 ◽  
Vol 27 (3) ◽  
pp. 265 ◽  
Author(s):  
Fabio A. Hernandes ◽  
Reinaldo J. F. Feres
Keyword(s):  
Phylogenetic Analysis ◽  
Spider Mite ◽  
Cladistic Analysis ◽  
Taxonomic Revision ◽  
Morphological Characters ◽  
Cultivated Plants ◽  
Monophyletic Clade ◽  
Taxonomic Review ◽  
The Family

Despite their great importance as pests of cultivated plants worldwide, members of the family Tetranychidae have never been subjected to a thorough cladistic analysis to reveal the history and relationships among related genera. Herein, we provide the first phylogenetic analysis and taxonomic review of species of the genera Aponychus, Paraponychus and Stylophoronychus using morphological characters. The results indicate a monophyletic clade uniting the aforementioned genera, although none of the three genera were recovered as monophyletic. We reinstate the tribe Aponychini as the taxon containing those three genera. Aponychus bambusae and A. aequilibris are herein considered junior synonyms of Stylophoronychus vannus and A. corpuzae, respectively.

Cladistic analysis of the tribes of Dytiscinae and the phylogenetic position of the genus Notaticus Zimmermann (Coleoptera: Dytiscidae)

2000 ◽  
Vol 31 (2) ◽  
pp. 165-177 ◽  
Author(s):  
Kelly B. Miller
Keyword(s):  
Phylogenetic Analysis ◽  
Cladistic Analysis ◽  
Morphological Characters ◽  
Phylogenetic Position ◽  
The Matrix ◽  
New Tribe

AbstractA hypothesis of the phylogeny of the tribes of Dytiscinae is presented based on a cladistic analysis of adult morphological characters. All tribes of Dytiscinae were included with larger tribes represented by multiple genera. Outgroups included members of all major lineages (subfamilies) of Dytiscidae. The matrix consists of 22 taxa and 45 characters. A single most parsimonious cladogram was produced by the analysis. It is concluded from the analysis that Dytiscinae is paraphyletic with respect to the genus Notaticus Zimmermann which has been previously recognized as the only member of the subfamily Aubehydrinae. Its position within the subfamily requires that it be placed within its own tribe, Aubehydrini. Additionally, Dytiscini was found to be paraphyletic, and a new tribe, Hyderodini, is proposed to contain the genus Hyderodes Sharp. Dytiscini is restricted to include only the genus Dytiscus Linneaus. Dytiscinae and all other tribes within the subfamily were found to be monophyletic. The proposed relationships of the tribes of Dytiscinae are Cybistrini + (Dytiscini + (Hyderodini + (Aubehydrini + (Hydaticini + (Eretini + Aciliini))))). Characters discovered to be useful for phylogenetic analysis of the subfamily are illustrated and described. The tribes are diagnosed and a key is presented for distinguishing them.

A phylogeny of the family Fanniidae Schnabl (Insecta:Diptera:Calyptratae) based on adult morphological characters, with special reference to the Austral species of the genus Fannia

2008 ◽  
Vol 22 (5) ◽  
pp. 563 ◽  
Author(s):  
M. C. Domínguez ◽  
S. A. Roig-Juñent
Keyword(s):  
Cladistic Analysis ◽  
Morphological Characters ◽  
External Morphology ◽  
Phylogenetic Position ◽  
Phylogenetic Hypothesis ◽  
Parsimony Analysis ◽  
Male And Female ◽  
Southern South America ◽  
The Family ◽  
Species Groups

The present study proposed a phylogenetic hypothesis of the family Fanniidae based on a cladistic analysis using characters from adult external morphology and female and male terminalia. The main purpose of this study was to clarify the phylogenetic position of newly described or poorly known species, mostly from southern South America, the Neotropics, Africa, Australia and New Zealand. In total, 151 characters from adult male and female external morphology and terminalia were scored for 78 species of Fanniidae. Ten continuous characters were included and analysed as such. Three genera of Fanniidae and all the species-groups and subgroups proposed for the genus Fannia, except for the admirabilis-group and the setifer-subgroup were included as terminal taxa. An heuristic parsimony analysis under implied weights was performed. The analysis recovered the monophyly of the Fanniidae and the genus Fannia, as well as the monophyly of several species-groups within Fannia. Male and female external morphological characters were, in general, highly homoplasious, whereas characters from male terminalia showed low level of homoplasy and provided resolution at suprageneric nodes and species-groups.

Phylogenetic relationships within the genus Atopobathynella Schminke (Bathynellacea:Parabathynellidae)

2006 ◽  
Vol 20 (1) ◽  
pp. 9 ◽  
Author(s):  
Joo-Lae Cho ◽  
W. F. Humphreys ◽  
Sang-Don Lee
Keyword(s):  
Phylogenetic Analysis ◽  
Surface Water ◽  
Retention Index ◽  
Western Australia ◽  
Phylogenetic Relationships ◽  
Morphological Characters ◽  
Consistency Index ◽  
Phylogenetic Position ◽  
The Family ◽  
Distributional Patterns

The present study attempts to reconstruct the phylogenetic relationships among species of Atopobathynella Schminke, 1973 in order to elucidate their distributional patterns and to seek a mechanism for the worldwide colonisation of the limnic interstitial by the Parabathynellidae. We describe six new Atopobathynella recently discovered in Western Australia: A. gascoyneensis, sp. nov., A. hinzeae, sp. nov., A. schminkei, sp. nov., A. wattsi, sp. nov., A. readi, sp. nov. and A. glenayleensis, sp. nov. The phylogenetic relationships among these species and four previously known species in the genus are assessed using 28 morphological characters. The analysis yielded two most parsimonious trees 71 steps long with consistency index 0.5070, retention index 0.5270, and rescaled consistency index 0.2672. One of these trees supports the grouping of A. readi, sp. nov. + (((A. wattsi, sp. nov. + A. glenaylensis, sp. nov.) + (A. hospitalis Schminke, 1973 (A. gascoyneensis, sp. nov. (A. schminkei, sp. nov. + A. hinzeae, sp. nov.)))) + (A. valdiviana (Noodt, 1964) (A. compagana Schminke, 1973 + A. chelifera Schminke, 1973))). We discuss the monophyly of Atopobathynella and its phylogenetic position within the family Parabathynellidae. The results of the phylogenetic analysis and the biogeographical data suggest that the ancestors of Atopobathynella colonized groundwater via limnic surface water.

A first cladistic analysis of Antarctoperlinae (Plecoptera: Gripopterygidae) and a new micropterous species from Patagonia

2020 ◽  
Vol 190 (3) ◽  
pp. 771-787
Author(s):  
Pablo Pessacq ◽  
Tácio Duarte ◽  
Luis B Epele
Keyword(s):  
New Species ◽  
South America ◽  
Southern Hemisphere ◽  
Molecular Analysis ◽  
Cladistic Analysis ◽  
Morphological Characters ◽  
Data Matrix ◽  
Phylogenetic Position ◽  
Type Series ◽  
The Family

Abstract Gripopterygidae is a diverse family of stoneflies, Plecoptera, distributed in the Southern Hemisphere. It has been traditionally divided into five subfamilies, but the monophyly of most of these is not supported by molecular the more comprehensive molecular analysis of the order. To test the monophyly of Antarctoperlinae, and to establish the phylogenetic position of a new Gripopterygidae species, we performed a morphological cladistic analysis including 38 morphological characters and 27 terminal taxa, with representatives of the four subfamilies present in South America and three Austroperlidae. Based on published information, we rooted the tree with Penturoperla barbata, Austroperlidae. As a result, Antarctoperlinae was recovered as polyphyletic, with Vesicaperla kuscheli and Plegoperla punctata, two members of the subfamily, placed outside the clade that includes the nine remaining genera of Antarctoperlinae. Vesicaperla also falls outside the family in previous molecular analysis. Based on this evidence, it should not be placed in Antarctoperlinae. Plegoperla punctata, known only from the type series, possesses many missing entries in our data matrix. Based on this, it seems convenient to maintain its subfamilial placement. In the tree obtained, the potential new species nests together with Pehuenioperla llaima. We thus accept it as a member of Pehuenioperla and describe it as P. microptera sp. nov.

New taxa of the Lygistorrhinidae (Diptera: Sciaroidea) and their implications for a phylogenetic analysis of the family

Zootaxa ◽  
2005 ◽  
Vol 960 (1) ◽  
pp. 1 ◽  
Author(s):  
HEIKKI HIPPA ◽  
INGEGERD MATTSSON ◽  
PEKKA VILKAMAA
Keyword(s):  
Phylogenetic Analysis ◽  
New Taxa ◽  
Cladistic Analysis ◽  
Sister Group ◽  
Morphological Characters ◽  
Undescribed Species ◽  
Parsimony Analysis ◽  
The Family ◽  
Outgroup Species ◽  
New Material

New Oriental taxa of the Lygistorrhinidae - Blagorrhina gen. n., with B. blagoderovi sp. n. and B. brevicornis sp. n.; Gracilorrhina gracilis gen. n., sp. n.; and Labellorrhina gen. n., with L. grimaldii sp. n. and L. quantula sp. n. are described, and two undescribed species, known only from females, are characterized. Based on this new material, the family is redefined. The phylogeneticrelationships among the taxa of Lygistorrhinidae were studied by parsimony analysis using 43 morphological characters from the adults of 25 ingroup and one outgroup species. The cladistic analysis produced 14 most parsimonious cladograms. The solution obtained suggests unambiguously the following phylogeny: Palaeognoriste Meunier and “Lygistorrhina” asiatica Senior-White are successively sister groups of the rest of the Lygistorrhinidae; there is a clade Labellorrhina + (Gracil- orrhina + (Blagorrhina + ((Seguyola Matile + (Loyugesa Grimaldi & Blagoderov + Matileola Papp))))) with a monophyletic Lygistorrhina Skuse – Probolaeus Williston lineage as sister group. The phylogeny among the latter group remains largely unresolved.

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.

Phylogenetic analysis of the subfamily Hylodinae (Anura, Leptodactylidae) based on morphological characters

2005 ◽  
Vol 26 (2) ◽  
pp. 139-147 ◽  
Author(s):  
Francisca do Val ◽  
Paulo Nuin
Keyword(s):  
Phylogenetic Analysis ◽  
Phylogenetic Relationships ◽  
Maximum Parsimony ◽  
Morphological Characters ◽  
The Other ◽  
The Family

AbstractThe systematics and phylogenetic relationships of the family Leptodactylidae are controversial as is the intrafamilial phylogeny of the leptodactylids. Here we analyze the relationships of the leptodactylid subfamily Hylodinae. This subfamily has been considered to be monophyletic and composed of three genera, Hylodes, Crossodactylus and Megaelosia. In the present study 49 characters were used, based on different studies on Leptodactylidae phylogeny. Maximum parsimony methods with unweighted and successively weighted characters were used to estimate the phylogeny of the Hylodinae. Upon analysis, the data provided further evidence of the monophyletic status of the three genera, with Megaelosia being the basal genus and the other two genera being sister taxa. The analysis with successive weighting results in a more resolved topology of the species subgroups of the genus Hylodes and separates this genus from Crossodactylus and confirms that the hylodines are monophyletic.

scholarly journals Isolation and Phylogenetic Analysis of Novel Viruses Infecting the Phytoplankton Phaeocystis globosa (Prymnesiophyceae)

2004 ◽  
Vol 70 (6) ◽  
pp. 3700-3705 ◽  
Author(s):  
C. P. D. Brussaard ◽  
S. M. Short ◽  
C. M. Frederickson ◽  
C. A. Suttle
Keyword(s):  
Phylogenetic Analysis ◽  
Dna Polymerase ◽  
Coastal Waters ◽  
Common Ancestor ◽  
Genetic Relatedness ◽  
Amino Acid Sequences ◽  
Polymerase Gene ◽  
Phaeocystis Globosa ◽  
The Family ◽  
Algal Host

ABSTRACT Viruses infecting the harmful bloom-causing alga Phaeocystis globosa (Prymnesiophyceae) were readily isolated from Dutch coastal waters (southern North Sea) in 2000 and 2001. Our data show a large increase in the abundance of putative P. globosa viruses during blooms of P. globosa, suggesting that viruses are an important source of mortality for this alga. In order to examine genetic relatedness among viruses infecting P. globosa and other phytoplankton, DNA polymerase gene (pol) fragments were amplified and the inferred amino acid sequences were phylogenetically analyzed. The results demonstrated that viruses infecting P. globosa formed a closely related monophyletic group within the family Phycodnaviridae, with at least 96.9% similarity to each other. The sequences grouped most closely with others from viruses that infect the prymnesiophyte algae Chrysochromulina brevifilum and Chrysochromulina strobilus. Whether the P. globosa viruses belong to the genus Prymnesiovirus or form a separate group needs further study. Our data suggest that, like their phytoplankton hosts, the Chrysochromulina and Phaeocystis viruses share a common ancestor and that these prymnesioviruses and their algal host have coevolved.

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