The evolutionary relationships of North American Diplous Motschulsky (Coleoptera:Carabidae:Patrobini) inferred from morphological and molecular evidence

2005 ◽  
Vol 19 (2) ◽  
pp. 145 ◽  
Author(s):  
Paul E. Marek ◽  
David H. Kavanaugh
Keyword(s):  
Phylogenetic Tree ◽  
North American ◽  
Morphological Evolution ◽  
Ground Beetle ◽  
Morphological Characters ◽  
Total Evidence ◽  
Molecular Evidence ◽  
Character State ◽  
The North ◽  
Key Species

Individuals of the ground beetle genus Diplous Motschulsky, 1850 occur in riparian areas predominately throughout boreal North America and Asia. In order to infer the species phylogeny of the North American Diplous, we examined 97 morphological characters (56 quantitative characters and 41 qualitative characters) and 458 bp of the mitochondrial cytochrome oxidase subunit I region. We used the four North American species, four Palearctic species, and one undescribed species of a closely related genus to test the monophyly and the direction of character state change in North American Diplous. Overall, we found that North American Diplous appear to represent a monophyletic group, but that the morphological and molecular evidence did not support the same relationships in the placement of one of the species. We found that the total evidence trees agreed most with biogeography and considerations of accelerated morphological evolution. In this paper, we present a morphological phylogenetic tree, a molecular phylogenetic tree, a total evidence phylogenetic tree, a species key, species diagnoses, and a distribution map of Nearctic Diplous.

scholarly journals Molecular Evidence for an Asian Origin and a Unique Westward Migration of Species in the Genus Castanea via Europe to North America

HortScience ◽  
2006 ◽  
Vol 41 (4) ◽  
pp. 1006B-1006
Author(s):  
Ping Lang ◽  
Fenny Dane ◽  
Thomas L. Kubisiak ◽  
Hongwen Huang
Keyword(s):  
North America ◽  
North American ◽  
Sequence Data ◽  
Morphological Evolution ◽  
North American Species ◽  
Molecular Evidence ◽  
Westward Expansion ◽  
Dna Sequence Data ◽  
The North ◽  
Sister Clade

The genus Castanea (Fagaceae), which contains three sections and seven species, is widely distributed in the deciduous forests of the Northern Hemisphere. The phylogeny of Castanea was estimated using DNA sequence data from five different regions of the chloroplast genome. Sequencing results support the genus Castanea as a paraphyletic group with C. crenata, the Japanese chestnut, representing an early divergence in the genus. The three Chinese species form a strongly supported sister clade to the North American and European clade. A unique westward expansion of extant Castanea species is hypothesized with Castanea originating in eastern Asia, an initial diversification within Asia during the Eocene, followed by intercontinental dispersion and divergence between the Chinese and European/North American species during the Oligocene and a split between the European and North American species in the early Miocene. The differentiation within North America and China might have occurred in late Miocene or early Pliocence. The North America species are supported as a clade with C. pumila var. ozarkensis, the Ozark chinkapin, as the basal lineage, sister to the group comprising C. pumila var. pumila, the Allegheny chinkapin, and C. dentata, the American chestnut. Morphological evolution of one nut per bur in the genus may have occurred independently on two continents.

The North American Allies of Hylobius piceus (De Geer) (Coleoptera: Curculionidae)

1957 ◽  
Vol 89 (1) ◽  
pp. 37-43 ◽  
Author(s):  
Stephen L. Wood
Keyword(s):  
North American ◽  
Distinct Species ◽  
Morphological Characters ◽  
North American Species ◽  
Winged Form ◽  
The North ◽  
The Status ◽  
Field Workers ◽  
Dimorphic Species ◽  
Biological Differences

While investigating the biology of the North American species of Hypomolyx, field workers in Manitoba found a vestigial, or short-winged, and a long-winged form under apparently identical conditions in about equal numbers. Although biological differences were nor then apparent, there was doubt as to whether they were dealing with one dimorphic species or with two distinct species, A search for morphological characters brought to light numerous differences between the two forms, supporting the view that two species were present. These differences, a description the previously unrecognized species, and notes concerning the status of the genera Hylobius and Hypomolyx are reported below.

A Study of Correlation between Morphology and Evolution of Euphorbiaceae s.l. using Taxonomic Congruence and Total Evidence

2021 ◽  
Vol 9 (1) ◽  
pp. 49-55
Author(s):  
Vanlal hruaia ◽  
◽  
Lal rinmuana ◽  
J Lalbiaknunga ◽  
Laldinfeli Ralte
Keyword(s):  
Phylogenetic Tree ◽  
Evolutionary Relationship ◽  
Cladistic Analysis ◽  
Morphological Characters ◽  
Flowering Plants ◽  
Morphological Features ◽  
Total Evidence ◽  
Pictorial Representation ◽  
Phenetic Analysis ◽  
Morphological Relationship

Euphorbiaceae is one of the largest family of flowering plants, in our study different species were collected from different localities of Mizoram, the collected specimens were studied and their morphological features noted. 34 genera of Euphorbiaceae s.l were used in the study. Cladistic analysis was performed in Mesquite software and Phenetic analysis was done in NTsys software. Both analyses produce a pictorial representation in a form of a tree; cladistic analysis produce phylogenetic tree (evolutionary relationship) while phenetic analysis produce phenogram (morphological relationship). The results of the aforementioned analyses were further analysed by total evidence technique and taxonomic congruence, a phylogenetic software PAUP is used for this purpose. The resultant trees were very different and comparison was done to find correlation between evolution and morphological characters. The research finds various correlation among characters like the number of locule in ovule, phyllanthoid branching and support the inclusion of genus like Breynia, Sauropus into Phyllanthus.

Total evidence phylogeny of the North American harvestman family Stygnopsidae (Opiliones : Laniatores : Grassatores) reveals hidden diversity

2017 ◽  
Vol 31 (3) ◽  
pp. 317 ◽  
Author(s):  
Jesús A. Cruz-López ◽  
Oscar F. Francke
Keyword(s):  
Bayesian Inference ◽  
Phylogenetic Analyses ◽  
Mitochondrial Protein ◽  
Morphological Characters ◽  
Molecular Data ◽  
Total Evidence ◽  
The North ◽  
Protein Encoding ◽  
The Status ◽  
Taxonomic Changes

Systematic relationships among Laniatores have received considerable attention during the past few years. Many significant taxonomic changes have been proposed, particularly in the superfamily Gonyleptoidea. As part of this superfamily, the basalmost Stygnopsidae is the least known family. In order to propose the first total evidence phylogeny of the family, we produced four datasets: three molecular markers – partial nuclear 28S, mitochondrial ribosomal 16S, mitochondrial protein-encoding cytochrome c oxidase subunit I; and 72 morphological characters. With these data, we performed three different phylogenetic analyses: (1) Bayesian Inference with molecular data, and (2) Bayesian Inference and (3) Maximum Likelihood using combined data. Our results are congruent: a monophyletic Stygnopsidae subdivided into two major clades: Stygnopsinae and Karosinae, subfam. nov. The following genera are redefined: Stygnopsis, Hoplobunus and Serrobunus stat. rev. The following taxa are described: Iztlina venefica, gen. nov., sp. nov. and Tonalteca, gen. nov. Additionally, the following changes are proposed: Serrobunus queretarius (Šilhavý, 1974), comb. nov., Stygnopsis apoalensis (Goodnight & Goodnight, 1973), comb. nov., Stygnopsis mexicana (Roewer, 1915), comb. nov., Stygnopsis oaxacensis (Goodnight & Goodnight, 1973), comb. nov., and Tonalteca spinooculorum (Goodnight & Goodnight, 1973), comb. nov. We also discuss the status of the genera Isaeus stat. rev. and Mexotroglinus. Finally, we discuss the evolution of male genitalia and convergence of selected homoplastic diagnostic characters.

Correlation of the Type Bashkirian Stage (Middle Carboniferous, South Urals) with the Morrowan and Atokan series of the midcontinental and western United States

1999 ◽  
Vol 73 (3) ◽  
pp. 529-539 ◽  
Author(s):  
John R. Groves ◽  
Tamara I. Nemyrovska ◽  
Alexander S. Alekseev
Keyword(s):  
North American ◽  
South Urals ◽  
Correlation Technique ◽  
The North ◽  
Key Species ◽  
Composite Section ◽  
Middle Carboniferous ◽  
Shrimp Zircon Geochronology ◽  
Shrimp Zircon ◽  
Bashkirian Stage

The graphic correlation technique has been used to directly relate the stratigraphic appearances of key species in the Bashkirian Stage stratotype to those in a North American composite section. The type Bashkirian is separated from the underlying Serpukhovian Stage by an erosional unconformity and associated lacuna of undetermined, but probably minor duration. Accordingly, the base of the type Bashkirian (base of Bogdanovkian Horizon) is only slightly younger than the international mid-Carboniferous boundary. A level within the upper part of the Tashastian Horizon (Upper Bashkirian Substage) most likely correlates with the Morrowan-Atokan boundary. This level roughly coincides with a sequence boundary at the Bashkirian stratotype and with a regional unconformity in the North American midcontinent. The top of the Bashkirian Stage (top of Asatauian Horizon) is lower Atokan in North American terms. On the basis of recent 40Ar/39Ar and SHRIMP zircon geochronology studies, the age of the mid-Carboniferous boundary is estimated at 314 Ma and a horizon of early Atokan age is dated at 310.8 Ma. Accepting the present biostratigraphic correlations, these values suggest a duration for the Bashkirian Stage of slightly more than 3.2 m.y. and a duration of the Morrowan Series of slightly less than 3.2 m.y.

scholarly journals Detailed description and illustration of larva, pupa and imago of Holorusia mikado (Westwood, 1876) (Diptera: Tipulidae) from Japan

2021 ◽  
Vol 9 ◽  
Author(s):  
Levente-Péter Kolcsár ◽  
Takeyuki Nakamura ◽  
Daichi Kato ◽  
Kozo Watanabe
Keyword(s):  
Leaf Litter ◽  
North American ◽  
Morphological Characters ◽  
Wide Distribution ◽  
Female Genitalia ◽  
Immature Stages ◽  
Aquatic Habitats ◽  
Male And Female ◽  
The North ◽  
First Time

Holorusia Loew, 1863 (Diptera: Tipulidae) is a relatively large crane fly genus with a wide distribution in the Afrotropic, Australasian–Oceanian, Eastern Palearctic, Oriental and Nearctic Regions. Although the genus is well known to include the largest crane fly species, the immature stages are, thus far, only described for the larva and pupa of the North American Holorusia hesperea Arnaud & Byers, 1990. In this study, we describe for the first time the egg, larva and pupae of the Japanese Holorusia mikado (Westwood, 1876). Larvae were collected from semi-aquatic habitats, from slow flowing areas of streams and small waterfalls where leaf litter accumulates; the larvae are detritivores and feed on wet, decomposing leaves. The larvae were reared to adults in the laboratory. Morphological characters of immature stages discussed with comparison with the North American H. hespera. Male and female genitalia are illustrated and described in detail for the first time.

scholarly journals Intra- and interpopulation variability of Solidago canadensis L. s. l. in Belarus

2019 ◽  
pp. 67-78
Author(s):  
Valery N. Tikhomirov ◽  
Iryna A. Ravenskaya
Keyword(s):  
North American ◽  
Spontaneous Mutation ◽  
Morphological Characters ◽  
North American Species ◽  
Point Of View ◽  
Solidago Canadensis ◽  
The North ◽  
Ray Florets ◽  
The Republic ◽  
Average Plant

The study of the variability of 22 morphological characters in 5 populations of Solidago canadensis L. s. l., growing in the city of Minsk and its environs, was carried out. Comparison of the obtained data with previously published information on the nature and range of variability of the North American taxa Solidago subsect. Triplinerviae showed that plants growing on the territory of the Republic of Belarus cannot be unambiguously assigned to any of the North American species by the combination of morphological characters. Compared to North American taxa, the plants of the studied populations have a significantly more powerful habitus (a large average plant height, longer and in many populations broader mid stem leaves, most often a larger inflorescence), intermediate in comparison with S. canadensis s. str. and S. altissima s. str. and significantly different from both North American species, the length of involucres and the length of tubular flowers, significantly longer outer phyllaries, shorter straps of ray florets, larger ovaries of ray florets, but their shorter pappus, a significantly smaller number of disc florets. The disc florets have significantly larger teeth compared to S. canadensis s. str. and S. altissima s. str. The data obtained confirm the point of view of Hildemar Scholz, according to which the invasive goldenrod, which is currently widely distributed throughout Europe, are of European origin. Most likely, they are either stabilized hybrids that arose during breeding due to the crossing of several North American species, or arose as a result of spontaneous mutation and further selection under natural conditions.

Dacryobolus angiospermarum (Polyporales, Basidiomycota), a new brown-rot corticioid species from southern China

Phytotaxa ◽  
2018 ◽  
Vol 365 (2) ◽  
pp. 189
Author(s):  
YUN-LIN XU ◽  
SHI-LIANG LIU ◽  
SHENG-HUA WU ◽  
SHUANG-HUI HE
Keyword(s):  
United States ◽  
New Species ◽  
Phylogenetic Tree ◽  
Southern China ◽  
Brown Rot ◽  
Morphological Characters ◽  
Molecular Evidence ◽  
Distinct Lineage

A new corticioid species, Dacryobolus angiospermarum, is described and illustrated from southern China based on morphological and molecular evidence. The new species is similar to D. karstenii but differs in growing on angiosperm wood, having wider skeletal hyphae, and lacking hymenial cystidia. In the phylogenetic tree inferred from ITS and nrLSU sequence of Dacryobolaceae, D. angiospermarum formed a distinct lineage sister to the D. karstenii group. Samples of D. karstenii from southern China, north Europe and northwestern United States formed different lineages. However, no morphological characters can be used to distinguish them at present.

The separation of Carex disticha and Carex sartwellii and the status of Carex disticha in North America

1988 ◽  
Vol 66 (11) ◽  
pp. 2323-2330 ◽  
Author(s):  
P. M. Catling ◽  
A. A. Reznicek ◽  
B. S. Brookes
Keyword(s):  
North American ◽  
Principal Component ◽  
Small Region ◽  
Morphological Characters ◽  
Scatter Diagram ◽  
The North ◽  
The Status ◽  
Beak Length ◽  
The Relationship ◽  
Distinguishing Features

To clarify the relationship between the Eurasian Carex disticha and the North American Carex sartwellii, 38 morphological characters were measured in 30 specimens of each. Various qualitative features were also scored. Through analysis of variance (ANOVA), a reduced number of 10 important continuous characters was obtained and the sample of each taxon was increased to 50. ANOVA of these 10 characters revealed that perigynium length and perigynium beak length were the most important discriminating characters, but in a scatter diagram of these two, 15% of the sample occupied a region of overlap. Principal-component analysis and discriminant analysis using the 10 characters resulted in a separation of the two groups, but a small region of overlap existed in both cases. The two taxa are distinct by virtue of accumulation of small morphological and other differences in a number of characters, rather than by sharp differentiation in a few characters. Carex disticha has larger perigynia with beaks (0.8–)1–1.5(–2.3) mm long, whereas C. sartwellii has smaller perigynia with beaks 0.4–1(–1.2) mm long. All distinguishing features are discussed and a key is provided. Immature vouchers for the occurrence of C. disticha in southwestern Quebec are confirmed on the basis of features of the inflorescence. The only other North American station of C. disticha, discovered in Simcoe Co., Ontario, in 1972 and extant in 1986, is also confirmed in the numerical analyses.

RAPD analysis of the relationship of North and South American subspecies of Fragaria chiloensis

1998 ◽  
Vol 76 (10) ◽  
pp. 1812-1817 ◽  
Author(s):  
Sue Porebski ◽  
Paul M Catling
Keyword(s):  
North American ◽  
Random Amplified Polymorphic Dna ◽  
Molecular Evidence ◽  
South American ◽  
Cophenetic Correlation ◽  
The North ◽  
Fragaria Chiloensis ◽  
Protection And Utilization ◽  
Relationship Of ◽  
North And South

To improve the intraspecific classification of Fragaria chiloensis (L.) Duchesne, 35 plants including 5 North American ssp. lucida, 15 North American ssp. pacifica, and 15 South American ssp. chiloensis were analysed using random amplified polymorphic DNA (RAPDs). From 100 primers screened, 12 were selected providing 62 scorable polymorphic bands. The phenogram (cophenetic correlation, r = 0.99) based on UPGMA clustering of Jaccard's coefficients revealed a clear division between North American and South American plants, but only partial separation was shown between the two North American subspecies. This is the first comprehensive molecular evidence for major genetic divergence between the North American and South American subspecies of F. chiloensis and suggests greater genetic variation within the Canadian material of the North American ssp. pacifica than within the South American ssp.chiloensis. These findings strongly support protection and utilization of wild Canadian Fragaria germplasm for crop improvement.Key words: strawberry, Fragaria chiloensis, ssp. chiloensis, ssp. pacifica, ssp. lucida, RAPD, variation, germplasm, Canada, United States, Chile.

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