Splitting Caldesia in favour of Albidella (Alismataceae)

2017 ◽  
Vol 30 (1) ◽  
pp. 64 ◽  
Author(s):  
Samuli Lehtonen
Keyword(s):  
Phylogenetic Analyses ◽  
Morphological Characteristics ◽  
Species Group ◽  
Disjunct Distribution ◽  
Caribbean Region ◽  
New Combinations ◽  
Tropical Africa ◽  
Sister Relationship ◽  
The Indian Ocean ◽  
The Caribbean

Phylogenetic analyses based on 10 molecular markers unquestionably support a sister relationship between Albidella nymphaeifolia and the Caldesia oligococca species group. The type species of the genus Caldesia is excluded from this monophylum. These results are unsurprising in the light of morphological characteristics, but require three new combinations in Albidella to render both Albidella and Caldesia monophyletic. These new combinations are provided here. Under the new circumscription, Albidella shows a disjunct distribution pattern, with one species in the Caribbean region and three species distributed from tropical Africa and along the margins of the Indian Ocean to Australia.

Phylogenetic analyses of nucleotide sequences confirm a unique plant intercontinental disjunction between tropical Africa, the Caribbean, and the Hawaiian Islands

2009 ◽  
Vol 123 (1) ◽  
pp. 57-65 ◽  
Author(s):  
Sandra Namoff ◽  
Quentin Luke ◽  
Francisco Jiménez ◽  
Alberto Veloz ◽  
Carl E. Lewis ◽  
...  
Keyword(s):  
Phylogenetic Analyses ◽  
Hawaiian Islands ◽  
Nucleotide Sequences ◽  
Tropical Africa ◽  
The Caribbean

scholarly journals DNA-barcoding of forensically important blow flies (Diptera: Calliphoridae) in the Caribbean Region

PeerJ ◽  
2017 ◽  
Vol 5 ◽  
pp. e3516 ◽  
Author(s):  
Sohath Z. Yusseff-Vanegas ◽  
Ingi Agnarsson
Keyword(s):  
Dna Barcoding ◽  
Species Delimitation ◽  
Phylogenetic Analyses ◽  
Molecular Data ◽  
Morphological Data ◽  
Caribbean Region ◽  
Reference Database ◽  
Correct Identification ◽  
Accurate Identification ◽  
The Caribbean

Correct identification of forensically important insects, such as flies in the family Calliphoridae, is a crucial step for them to be used as evidence in legal investigations. Traditional identification based on morphology has been effective, but has some limitations when it comes to identifying immature stages of certain species. DNA-barcoding, using COI, has demonstrated potential for rapid and accurate identification of Calliphoridae, however, this gene does not reliably distinguish among some recently diverged species, raising questions about its use for delimitation of species of forensic importance. To facilitate DNA based identification of Calliphoridae in the Caribbean we developed a vouchered reference collection from across the region, and a DNA sequence database, and further added the nuclear ITS2 as a second marker to increase accuracy of identification through barcoding. We morphologically identified freshly collected specimens, did phylogenetic analyses and employed several species delimitation methods for a total of 468 individuals representing 19 described species. Our results show that combination of COI + ITS2 genes yields more accurate identification and diagnoses, and better agreement with morphological data, than the mitochondrial barcodes alone. All of our results from independent and concatenated trees and most of the species delimitation methods yield considerably higher diversity estimates than the distance based approach and morphology. Molecular data support at least 24 distinct clades within Calliphoridae in this study, recovering substantial geographic variation forLucilia eximia, Lucilia retroversa, Lucilia ricaandChloroprocta idioidea, probably indicating several cryptic species. In sum, our study demonstrates the importance of employing a second nuclear marker for barcoding analyses and species delimitation of calliphorids, and the power of molecular data in combination with a complete reference database to enable identification of taxonomically and geographically diverse insects of forensic importance.

Dothidea kunmingensis, a novel asexual species of Dothideaceae on Jasminum nudiflorum (winter jasmine) from Southwestern China

Phytotaxa ◽  
2021 ◽  
Vol 529 (1) ◽  
pp. 43-56
Author(s):  
YING GAO ◽  
JUTAMART MONKAI ◽  
ELENI GENTEKAKI ◽  
GUANG-CONG REN ◽  
DHANUSHKA N. WANASINGHE ◽  
...  
Keyword(s):  
New Species ◽  
Phylogenetic Analyses ◽  
Large Subunit ◽  
Elongation Factor ◽  
Morphological Characteristics ◽  
Small Subunit ◽  
Morphological Characterization ◽  
Small Subunit Rrna ◽  
Sister Relationship ◽  
Large Subunit Rrna

During a survey of saprobic microfungi in Southwest China, a coelomycetous fungus was found on dead twigs of Jasminum nudiflorum in Kunming, Yunnan Province. Based on a detailed morphological characterization coupled with multi-locus phylogenetic analyses, the fungus was identified as a new species in the genus Dothidea. Phylogenetic analyses using a combined matrix consisting of internal transcribed spacer (ITS), large subunit rRNA (LSU), small subunit rRNA (SSU), beta tubulin (tub2) and translation elongation factor-1 alpha (tef1-α) confirmed its placement in Dothideaceae and revealed a sister relationship to Dothidea eucalypti. The new species is characterized by pycnidial conidiomata, ampulliform or doliiform conidiogenous cells as well as aseptate, subglobose to ovoid, hyaline to pale-brown conidia. Comprehensive descriptions and illustrations are provided. Morphological characteristics of asexual morph taxa in Dothideaceae are also summarized and discussed.

scholarly journals A stem delphinidan from the Caribbean region of Venezuela

2021 ◽  
Vol 140 (1) ◽  
Author(s):  
Aldo Benites-Palomino ◽  
Andres E. Reyes-Cespedes ◽  
Gabriel Aguirre-Fernández ◽  
Rodolfo Sánchez ◽  
Jorge D. Carrillo-Briceño ◽  
...  
Keyword(s):  
Fossil Record ◽  
Middle Miocene ◽  
Phylogenetic Analyses ◽  
Eastern Pacific ◽  
Caribbean Region ◽  
Taxonomic Identification ◽  
Temporal Fossa ◽  
Northern Atlantic ◽  
The Caribbean ◽  
Phylogenetic Affinities

AbstractThe dense Miocene record of cetaceans is known from localities along the coasts of all continents, mostly in the northern Atlantic or the eastern Pacific regions, but Antarctica. Fossils from the Caribbean region are few and include of a couple of findings from Panama and Venezuela. Here, we report a partly complete skull from the Caujarao Formation (middle Miocene), Falcon State, Caribbean region of Venezuela. Our phylogenetic analyses indicate that the Caujarao specimen is a ‘stem delphinidan’, a group that includes several taxa of early diverging odontocetes whose phylogenetic affinities remain a matter of debate. The fossil record has shown that this group of stem delphinidans was taxonomically diverse, but displayed a somewhat homogeneous cranial patterning, with most of the variations being found within the mandible or tympanoperiotic characters. As other stem delphinidans the Caujarao odontocete displays an enlarged temporal fossa and a fairly symmetrical cranium. Because the skull is missing several key diagnostic characters due to the preservation state of the specimen, a more precise taxonomic identification is not possible. Despite this, the finding of this specimen highlights the importance of the fossil record from the Neogene of Venezuela, and the importance of the area to understand cetacean evolution in the proto-Caribbean.

Phylogenetic Classification of Subtribe Castillejinae (Orobanchaceae)

2009 ◽  
Vol 34 (1) ◽  
pp. 182-197 ◽  
Author(s):  
David C. Tank ◽  
J. Mark Egger ◽  
Richard G. Olmstead
Keyword(s):  
Phylogenetic Analyses ◽  
Morphological Characteristics ◽  
Systematic Research ◽  
New Combinations ◽  
Phylogenetic Hypothesis ◽  
Molecular Systematic ◽  
Genus Level ◽  
Formal Classification ◽  
Molecular Phylogenetic

Recent molecular systematic research has indicated the need for a revised circumscription of generic boundaries in subtribe Castillejinae (tribe Pedicularideae, Orobanchaceae). Based on a well-resolved and well-supported phylogenetic hypothesis, we present a formal reclassification of the major lineages comprising the Castillejinae. Prior to this treatment, subtribe Castillejinae included Castilleja (ca. 190 spp.), Cordylanthus (18 spp.), Orthocarpus (9 spp.), Triphysaria (5 spp.), and the monotypic genera Clevelandia and Ophiocephalus. In the classification presented here, Orthocarpus and Triphysaria retain their current circumscriptions, Castilleja is expanded to include Clevelandia and Ophiocephalus, and Cordylanthus is split into three genera; a key to the genera as they are recognized here is provided. Two new combinations, Castilleja beldingii and Castilleja ophiocephala, are proposed within the expanded Castilleja. The concept of Cordylanthus is restricted to the 13 species formerly recognized as subg. Cordylanthus, while subg. Dicranostegia and subg. Hemistegia are elevated to genus level (Dicranostegia and Chloropyron, respectively). We resurrect the generic name Chloropyron for the halophytes previously recognized as subg. Hemistegia. Five new combinations are proposed for Chloropyron (Chloropyron maritimum subsp. canescens, Chloropyron maritimum subsp. palustre, Chloropyron molle subsp. hispidum, Chloropyron palmatum, and Chloropyron tecopense). In addition to the formal classification, we provide phylogenetic clade definitions for Castillejinae, each of the genera, and two additional clades that are not assigned formal ranks. Morphological characteristics used to recognize traditional groups are evaluated, and synapomorphies are discussed. Finally, the current infrageneric classifications for Castilleja and Cordylanthus are evaluated in light of the recent molecular phylogenetic analyses.

The anamorph genus Knufia and its phylogenetically allied species in Coniosporium, Sarcinomyces, and Phaeococcomyces

Botany ◽  
2011 ◽  
Vol 89 (8) ◽  
pp. 523-536 ◽  
Author(s):  
A. Tsuneda ◽  
S. Hambleton ◽  
R.S. Currah
Keyword(s):  
Type Species ◽  
Phylogenetic Analyses ◽  
Morphological Characteristics ◽  
Monophyletic Group ◽  
New Combinations ◽  
Balsam Poplar

Knufia endospora , a species described previously on the basis of cultured material, was found forming distinctive sporodochia on the bark of balsam poplar. Phylogenetic analyses of this fungus and some allied species indicated that (i) it forms a monophyletic group with Knufia cryptophialidica (type species of Knufia ) and with Coniosporium perforans , Coniosporium epidermidis and Phaeococcomyces chersonesos and (ii) P. chersonesos and Sarcinomyces petricola are conspecific. These Coniosporium and Phaeococcomyces species also shared major morphological characteristics with Knufia in culture and were morphologically and phylogenetically distant from the type species of their respective genera. The following new combinations are proposed: Knufia perforans (Sterflinger) Tsuneda, Hambleton & Currah; Knufia epidermidis (D.M. Li, de Hoog, Saunte & X.R. Chen) Tsuneda, Hambleton & Currah; and Knufia chersonesos (Bogom. & Minter) Tsuneda, Hambleton & Currah. Phaeococcomyces catenatus and Phaeococcomyces nigricans (type species of Phaeococcomyces) were morphologically similar but phylogenetically distant from each other and from Knufia.

scholarly journals DNA-barcoding of forensically important blow flies (Diptera: Calliphoridae) in the Caribbean Region

2017 ◽  
Author(s):  
Sohath Z Yusseff-Vanegas ◽  
Ingi Agnarsson
Keyword(s):  
Dna Barcoding ◽  
Species Delimitation ◽  
Phylogenetic Analyses ◽  
Molecular Data ◽  
Morphological Data ◽  
Caribbean Region ◽  
Reference Database ◽  
Correct Identification ◽  
Accurate Identification ◽  
The Caribbean

Correct identification of forensically important insects, such as flies in the family Calliphoridae, is a crucial step for them to be used as evidence in legal investigations. Traditional identification based on morphology has been effective, but has some limitations when it comes to identify immature stages of certain species. DNA-barcoding, using COI, has demonstrated potential for rapid and accurate identification of Calliphoridae, however, this gene does not reliably distinguish among some recently diverged species, raising questions about its use for delimitation of species of forensic importance. To facilitate DNA based identification of Calliphoridae in the Caribbean; we developed a vouchered reference collection from across the region, and a DNA sequence database, and further added the nuclear ITS2 as a second marker to increase accuracy of identification through barcoding. We morphologically identified freshly collected specimens, did phylogenetic analyses and employed several species delimitation methods for a total of 468 individuals representing 19 described species. Our results show that combination of COI + ITS2 genes yields more accurate identification and diagnoses, and better agreement with morphological data, than the mitochondrial barcodes alone. All of our results from independent and concatenated trees and most of the species delimitation methods yield considerably higher diversity estimates than the distance based approach and morphology. Molecular data support at least 24 distinct clades within Calliphoridae in this study recovering substantial geographic variation for Lucilia eximia, Lucilia retroversa, Lucilia rica and Chloroprocta idioidea, probably indicating several cryptic species. In sum, our study demonstrates the importance employing a second nuclear marker for barcoding analyses and species delimitation of calliphorids and the power of molecular data in combination with a complete reference database to enable identification of taxonomically and geographically diverse insects of forensic importance.

scholarly journals Hyptis spicigera (black sesame).

2020 ◽  
Author(s):  
Shruti Dube
Keyword(s):  
Invasive Species ◽  
Caribbean Region ◽  
Tropical Africa ◽  
Invasive Weed ◽  
Pasture Grass ◽  
Agricultural Weed ◽  
Annual Herb ◽  
The Caribbean ◽  
Evidence Of Impact ◽  
Savannah Zone

Abstract Hyptis spicigera is an annual herb possibly native to tropical and subtropical America but now widely naturalized in tropical Africa and Asia, and Australia. This species has become a widespread weed in the Guinea Savannah zone. Its seeds contaminate the pasture grass seed. H. spicigera is listed as an agricultural weed in South Asia, Southeast Asia and Africa (e.g. Burkina Faso, Cameroon, Ghana, Guinea, Nigeria). It is considered an invasive weed in rice-growing areas in Madagascar with no further details. H. spicigera has also spread widely as a tropical weed in the Caribbean region, and is listed as an invasive species on the Global Register for Introduced and Invasive Species for Cuba with evidence of impact. H. spicigera is also listed in the 2017 edition of the Global Compendium of Weeds. This species received a high invasive risk score in an assessment of the invasive threat of introduced species in Australia.

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