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Paula Agudelo - One of the best experts on this subject based on the ideXlab platform.
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Distribution of Hoplolaimus Species in Soybean Fields in South Carolina
2020Co-Authors: North Carolina, Xinyuan Ma, Claudia M. Holguin, John D. Mueller, Paula AgudeloAbstract:Holguin,C.M.,Ma,X.,Mueller, J.D.,andAgudelo,P.2016.DistributionofHoplolaimusspeciesinsoybeanfieldsinSouthCarolinaandNorthCarolina. Plant Dis. 100:149-153. Hoplolaimus columbus is an important nematode pest of soybean in South Carolina and North Carolina. Tolerant cultivars are available for the management of this plant-parasitic nematode; however, variation in the response of soybean cultivars to H. columbus populations has been observed. This variation may be due to the presence of different species or high genetic diversity of H. columbus populations. The objective of this study was to identify the Hoplolaimus spp. present in fields representing the main soybean-growing regions in South Carolina and North Carolina and to examine the genetic variability of these populations. In South Carolina, the only species found associated with soybean was H. columbus but, in North Carolina, H. Stephanus was the dominant species. The two species were never found together. Genetic variability analyses of a mitochondrial and a nuclear marker showed that only one haplotype was shared by the H. columbus populations. H. Stephanus showed higher genetic variability, with private haplotypes per sampling location. Knowledge of the distribution and genetic variability of these two Hoplolaimus spp. is valuable to growers to determine potentially damaging infestations of these plant-parasitic nematodes in soybean fields. Lance nematodes (Hoplolaimus spp.) are migratory ecto-endo plant parasites widely distributed in the United States that feed on the roots of several field crop, grass, and tree species. In the southeastern United States, seven species have been reported (Koenning etal.1999;Lewis andFassuliotis1982;Robbins1982):Hoplolaimus galeatus (Cobb, 1913) Thorne, 1935, H. columbus Sher, 1963, H. magnistylus Robbins, 1982, H. Stephanus Sher, 1963, H. seinhorsti Luc, 1958, H. tylenchiformis von Daday, 1905 (Lewis and Fassuliotis 1982), and H. concaudajuvencus Golden and Minton, 1970. Of these, only H.columbus,H.galeatus,andH.magnistylushave been reported to be of economic importance on soybean (Glycine max) (Fassuliotis 1974; Noe 1993; Nyczepir and Lewis 1979). H. columbus (Columbia lance nematode) was first described from soybean in Richland County, SC (Sher 1963). Since that time, H. columbus has been mainly found in South Carolina, North Carolina, and Georgia (Koenning et al. 1999; Lewis and Fassuliotis 1982), with one report from Alabama (Gazaway and Armstrong 1994) and one from Louisiana (Astudillo and Birchfield
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Distribution of Hoplolaimus Species in Soybean Fields in South Carolina and North Carolina
Plant Disease, 2015Co-Authors: Claudia M. Holguin, Xinyuan Ma, John D. Mueller, Paula AgudeloAbstract:Hoplolaimus columbus is an important nematode pest of soybean in South Carolina and North Carolina. Tolerant cultivars are available for the management of this plant-parasitic nematode; however, variation in the response of soybean cultivars to H. columbus populations has been observed. This variation may be due to the presence of different species or high genetic diversity of H. columbus populations. The objective of this study was to identify the Hoplolaimus spp. present in fields representing the main soybean-growing regions in South Carolina and North Carolina and to examine the genetic variability of these populations. In South Carolina, the only species found associated with soybean was H. columbus but, in North Carolina, H. Stephanus was the dominant species. The two species were never found together. Genetic variability analyses of a mitochondrial and a nuclear marker showed that only one haplotype was shared by the H. columbus populations. H. Stephanus showed higher genetic variability, with priv...
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High genetic diversity and geographic subdivision of three lance nematode species (Hoplolaimus spp.) in the United States
Ecology and Evolution, 2015Co-Authors: Claudia M. Holguin, John D. Mueller, Juan Antonio Baeza, Paula AgudeloAbstract:Lance nematodes (Hoplolaimus spp.) feed on the roots of a wide range of plants, some of which are agronomic crops. Morphometric values of amphimictic lance nematode species overlap considerably, and useful morphological characters for their discrimination require high magnification and significant diagnostic time. Given their morphological similarity, these Hoplolaimus species provide an interesting model to investigate hidden diversity in crop agroecosystems. In this scenario, H. galeatus may have been over-reported and the related species that are morphologically similar could be more widespread in the United States that has been recognized thus far. The main objectives of this study were to delimit Hoplolaimus galeatus and morphologically similar species using morphology, phylogeny, and a barcoding approach, and to estimate the genetic diversity and population structure of the species found. Molecular analyses were performed using sequences of the cytochrome c oxidase subunit 1 (Cox1) and the internal transcribed spacer (ITS1) on 23 populations. Four morphospecies were identified: H. galeatus, H. magnistylus, H. concaudajuvencus, and H. Stephanus, along with a currently undescribed species. Pronounced genetic structure correlated with geographic origin was found for all species, except for H. galeatus. Hoplolaimus galeatus also exhibited low genetic diversity and the shortest genetic distances among populations. In contrast, H. Stephanus, the species with the fewest reports from agricultural soils, was the most common and diverse species found. Results of this project may lead to better delimitation of lance nematode species in the United States by contributing to the understanding the diversity within this group.
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molecular characterization and phylogenetic analysis of hoplolaimus Stephanus
Journal of Nematology, 2011Co-Authors: Paula Agudelo, J D Mueller, Halina T KnapAbstract:Three Hoplolaimus Stephanus populations were characterized morphologically, both by morphometrics and by SEM observations. These populations were used to develop a rapid and accurate molecular identification method for the species, which is useful because of the high level of morphological similarity between H. Stephanus and H. galeatus. Species-specific primers for H. Stephanus, amplifying a distinct fragment (260 bp) of the nuclear ribosomal internal transcribed spacer1 (ITS1), can be used in multiplex PCR along with previously developed primers for other common Hoplolaimus species. We also infer phylogenetic relationships among H. Stephanus, the closely-related H. galeatus, and several other Hoplolaimus species, using sequences of the actin gene, ITS1 and LSUD.
P. M. Fraser - One of the best experts on this subject based on the ideXlab platform.
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After Stephanus
Greek Ethnic Terminology, 2009Co-Authors: P. M. FraserAbstract:The epitomised Stephanus is the only text of an Ethnika surviving from antiquity. Consequently we cannot speak of his successors in the same way that he himself may be regarded as successor of Oros, or at a further remove, of Alexander Polyhistor or Herennius Philon. There survive a number of unnamed quotations regarding ethnic forms in various Etymologica and elsewhere, which sometimes provide more information than the corresponding entries in Stephanus, but it is a manifest oversimplification to suppose that all these entries derive from the full text of Stephanus. Stephanus and the Epitome were subsequently used by a few Byzantine writers, notably by Constantine Porphyrogennetus and the Continuators of Theophanes, in the tenth and eleventh centuries, and above all, though last in time, by Eustathius in the twelfth.
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Greek Ethnic Terminology - Stephanus’ Sources: the Tradition of ἐθνικά
Greek Ethnic Terminology, 2009Co-Authors: P. M. FraserAbstract:This chapter focuses on some problems associated with Stephanus' ultimate sources, and considers how much his text contributes to the subject of ethnic terminology. Stephanus is not the earliest writer on or compiler of a catalogue of places and ethnics, but his work alone survives, though only in an epitomised form, and is thus the essential part of the evidence. The goal is to interrogate the text in the hope that it will throw more light on the various aspects of ethnic formations in general use. The chapter examines the text of the Epitome with especial reference to the main sources of earlier date, with particular consideration to (a) Alexander Polyhistor, of Miletus, a contemporary of Sulla, to whom he owed his Roman citizenship, with the nomen Cornelius, whose enormous output — some thirty separate titles in all — included numerous works concerned with ethnic forms; (b) Herennius Philon of Byblos, the Phoenician‐Greek ‘translator’ or author of the Phoenician history which passed under the name of Sanchuniathon, and author of a work on ‘Famous Cities and their Famous Sons’, which included much information on ethnic forms; and (c) Alexandrian Oros, of the fourth/fifth century ad, who formed perhaps the final link between Stephanus and his predecessors, and also between Stephanus and contemporary or later writers.
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Greek Ethnic Terminology - Stephanus of Byzantium’s Vocabulary
Greek Ethnic Terminology, 2009Co-Authors: P. M. FraserAbstract:The text of the Epitome of Stephanus contains no preliminary statement of principle regarding grammatical rules for individual ethnics, and although reference may be made under individual ethnics to regional or local usage, the information is repetitive and simply ad hoc. We are not in a position to say whether that is how the text was left by Stephanus, or whether an opening section or sections were excised by the epitomator(s). There are two recognisable features of the Epitome as a whole: (a) the inclusion in it, with corresponding ‘ethnics’ or a similar term, of a number of items which cannot by their very nature have had a civic role, and thus could not strictly have generated an ἐθνικόν, since they do not belong to that category of names. Alongside these irregular entries, there is another group of linguistic terms (b), which Stephanus uses to express departure from either an analogistic or local form, in such phrases as ‘it should be … ’. This chapter presents a list of some typical examples of the first class of entry; a second list illustrates different principles of linguistic usage recorded by Stephanus for features which have no independent political (including tribal) existence, but are included by him in his text; that is to say, forms which are justified or rejected by him in terms of the rules of ‘ethnic’ usage.
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Greek Ethnic Terminology - Introduction Eθνoς and Γένoς
Greek Ethnic Terminology, 2009Co-Authors: P. M. FraserAbstract:This introductory chapter surveys the various meanings given to the two terms ἔθνος and γένος in documentary and literary usage. It aims to enable the reader to follow the detailed analysis of selected parts of the text of Stephanus and the associated aspects of ancient Greek concepts of ethnicity, in practice and in theory.
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Greek Ethnic Terminology - Hellenistic Eponymous Cities and Ethnics
Greek Ethnic Terminology, 2009Co-Authors: P. M. FraserAbstract:Chapter 6 showed the long history of metonomasy, which is preserved in a number of entries in documentary evidence and particularly in Stephanus, relating to cities and communities of the Classical world. It also investigated the reverse process, by which ethnics of cities that had for one reason or another ceased to exist as independent bodies continued to be used, particularly (but not exclusively) in peripheral regions such as Egypt. This chapter looks forward to the new world, particularly the early Hellenistic age, which brought into being new urban settlements, with politically eponymous titles.
C Van Achterberg - One of the best experts on this subject based on the ideXlab platform.
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A review of Stephanidae (Hymenoptera: Stephanoidea) from India, with the description of five new species
Zootaxa, 2020Co-Authors: C. Binoy, C Van Achterberg, P. Girish Kumar, S. Santhosh, S. SheelaAbstract:The family Stephanidae from India is reviewed, resulting in the description and illustration of one new species of Megischus Brullé, two new species of Foenatopus Smith and two new species of Parastephanellus Enderlein. In addition, a Chinese species Foenatopus weii Chen, van Achterberg & Xu and a range extension of Stephanus Jurine are reported from India. The male of Stephanus bidentatus van Achterberg, 2002, is newly reported with descriptions and illustrations. Keys to genera and species of Indian Stephanidae are provided along with a checklist of Stephanidae occurring in India.
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new species of the genera megischus brulle and Stephanus jurine from china hymenoptera stephanoidea stephanidae with a key to world species of the genus Stephanus
Zoologische Mededelingen, 2004Co-Authors: C Van Achterberg, Zhong Qi YangAbstract:Three new species of the genera Megischus Brulle and Stephanus Jurine from China (Hymenoptera: Stephanoidea: Stephanidae) are described, illustrated and keyed. Megischus ptosimae Chao, 1964, from Fujian is redescribed and the specimen from India described as M. ptosimae Chao by van Achterberg (2002) is renamed as M. alveolifer spec. nov. and the Malaysian specimen of M. ducalis Westwood listed by van Achterberg (2002) is described as M. ducaloides spec. nov. M. ducalis Westwood, 1851, is reported for the first time from Cambodia, which is the first report after its description. A key to world species of the genus Stephanus is provided.
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a revision of the old world species of megischus brulle Stephanus jurine and pseudomegischus gen nov with a key to the genera of the family stephanidae hymenoptera stephanoidea
Zoologische Verhandelingen, 2002Co-Authors: C Van AchterbergAbstract:The genera of the family Stephanidae Leach, 1815 (Hymenoptera: Stephanoidea), are redefined and keyed. Three new genera and two subgenera are described and illustrated. Profoenatus gen. nov. (type species: Stephanus elliotti Ceballos, 1926, from Madagascar), with subgenus Comnatopus nov. (type species: Stephanus comma Morley, 1917, from the African continent), Afromegischus gen. nov. (type species: Stephanus pachylomerus Schletterer, 1889, from the African continent) and Pseudomegischus gen. nov. (type species: Stephanus sulcifrons Schletterer, 1889), with the nominate subgenus in the Indo-Australian region and subgenus Callomegischus nov. (type species: Stephanus tibiator Schletterer, 1889) in the Afrotropical region with an extension to the Arabian Peninsula. The Indo-Australian and Palaearctic species of the genus Megischus Brulle, 1846, are revised, 25 described species are recognised as valid, 22 new synonyms are established (plus 5 likely ones) and 17 new species are added. In addition the species of the genera Pseudomegischus gen. nov. and Stephanus Jurine (in Panzer), 1801, are keyed, including two new species: Pseudomegischus celebensis spec. nov. from Central Sulawesi, and Stephanus soror spec. nov. from West Malaysia. The following new synonyms are established: Stephanus brevicoxis Elliott, 1926, and S. linearis Elliott, 1927 with Megischus curtus (Elliott, 1926); Stephanus tinctipennis Kieffer, 1916, S. pilosus Elliott, 1921, S. rugosus Elliott, 1921, S. impressus Elliott, 1926, S. sulcatus Elliott, 1926, S. philippinensis Ceballos, 1926, S. similis Elliott, 1927, S. ruber Elliott, 1927, S. samaris Elliott, 1927, and S. glabricoxis Elliott, 1927, with Megischus insularis Smith, 1857; Stephanus aequalis Elliott, 1927, S. aequalis var. ruficauda Elliott, 1927, and S. petiolatus Elliott, 1927, with Megischus rubripes (Kieffer, 1916) comb. nov.; Stephanus ceylonicus Cameron, 1903, with Megischus nigricans Sichel, 1866; Stephanus hirsutus Elliott, 1927, and S. punctatus Elliott, 1927 with Megischus nigripes (Elliott, 1927); Stephanus panayanus Elliott, 1927, with Megischus reticulatus (Elliott, 1926); Megischus froggattii Cameron, 1911, and Stephanus rubripes Morley, 1917, with Megischus rufofemoratus (Szepligeti, 1902) comb. nov.; Stephanus hornianus Enderlein, 1912, with Megischus tortus (Morley, 1917); Stephanus quadraticollis Elliott, 1927, and Stephanus elegans Elliott, 1927, with Stephanus sulcifrons Schletterer, 1889. The following are new combinations: Megischus curtus (Elliott, 1926); M. lucidus (Szepligeti, 1902); M. rufofemoratus (Szepligeti, 1902); M. rufus (Elliott, 1927); M. tortus (Morley, 1917), M. rubripes (Kieffer, 1916), Parastephanellus spoliator (Smith, 1863), Pseudomegischus insidiator (Smith, 1863) and P. rugipleurae (Elliott, 1928). Megischus lucidus (Szepligeti, 1902), M. rubripes (Kieffer, 1916) and M. nigripes (Elliott, 1927) are re-instated names. Lectotypes are designated to enhance the future stability of the taxonomy of the following taxa: Stephanus aequalis Elliott, 1927; Stephanus tinctipennis var. atriceps Kieffer, 1916; Stephanus curtus Elliott, 1926; Megischus froggattii Cameron, 1911; Megischus insularis Smith, 1857; Megischus longicaudatus Costa, 1866; Stephanus lucidus Szepligeti, 1902; Stephanus petiolatus Elliott, 1927; Stephanus reticulatus Elliott, 1926; Stephanus ruber Elliott, 1927; Stephanus tinctipennis var. rubripes Kieffer, 1916; Megischus ruficeps de Saussure, 1901; Stephanus samaris Elliott, 1927; Stephanus similis Elliott, 1927; Stephanus sulcatus Elliott, 1926 and Stephanus variantius Elliott, 1926. Stenophasmidae Benoit, 1949, is a new junior synonym of the tribe Sphathiini Foerster, 1862, of the subfamily Doryctinae Foerster, 1862 (Hymenoptera: Braconidae). The genus Stenophasmus Smith, 1859, is re-instated as a valid genus near the genus Spathius Nees, 1818.
Claudia M. Holguin - One of the best experts on this subject based on the ideXlab platform.
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Distribution of Hoplolaimus Species in Soybean Fields in South Carolina
2020Co-Authors: North Carolina, Xinyuan Ma, Claudia M. Holguin, John D. Mueller, Paula AgudeloAbstract:Holguin,C.M.,Ma,X.,Mueller, J.D.,andAgudelo,P.2016.DistributionofHoplolaimusspeciesinsoybeanfieldsinSouthCarolinaandNorthCarolina. Plant Dis. 100:149-153. Hoplolaimus columbus is an important nematode pest of soybean in South Carolina and North Carolina. Tolerant cultivars are available for the management of this plant-parasitic nematode; however, variation in the response of soybean cultivars to H. columbus populations has been observed. This variation may be due to the presence of different species or high genetic diversity of H. columbus populations. The objective of this study was to identify the Hoplolaimus spp. present in fields representing the main soybean-growing regions in South Carolina and North Carolina and to examine the genetic variability of these populations. In South Carolina, the only species found associated with soybean was H. columbus but, in North Carolina, H. Stephanus was the dominant species. The two species were never found together. Genetic variability analyses of a mitochondrial and a nuclear marker showed that only one haplotype was shared by the H. columbus populations. H. Stephanus showed higher genetic variability, with private haplotypes per sampling location. Knowledge of the distribution and genetic variability of these two Hoplolaimus spp. is valuable to growers to determine potentially damaging infestations of these plant-parasitic nematodes in soybean fields. Lance nematodes (Hoplolaimus spp.) are migratory ecto-endo plant parasites widely distributed in the United States that feed on the roots of several field crop, grass, and tree species. In the southeastern United States, seven species have been reported (Koenning etal.1999;Lewis andFassuliotis1982;Robbins1982):Hoplolaimus galeatus (Cobb, 1913) Thorne, 1935, H. columbus Sher, 1963, H. magnistylus Robbins, 1982, H. Stephanus Sher, 1963, H. seinhorsti Luc, 1958, H. tylenchiformis von Daday, 1905 (Lewis and Fassuliotis 1982), and H. concaudajuvencus Golden and Minton, 1970. Of these, only H.columbus,H.galeatus,andH.magnistylushave been reported to be of economic importance on soybean (Glycine max) (Fassuliotis 1974; Noe 1993; Nyczepir and Lewis 1979). H. columbus (Columbia lance nematode) was first described from soybean in Richland County, SC (Sher 1963). Since that time, H. columbus has been mainly found in South Carolina, North Carolina, and Georgia (Koenning et al. 1999; Lewis and Fassuliotis 1982), with one report from Alabama (Gazaway and Armstrong 1994) and one from Louisiana (Astudillo and Birchfield
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Distribution of Hoplolaimus Species in Soybean Fields in South Carolina and North Carolina
Plant Disease, 2015Co-Authors: Claudia M. Holguin, Xinyuan Ma, John D. Mueller, Paula AgudeloAbstract:Hoplolaimus columbus is an important nematode pest of soybean in South Carolina and North Carolina. Tolerant cultivars are available for the management of this plant-parasitic nematode; however, variation in the response of soybean cultivars to H. columbus populations has been observed. This variation may be due to the presence of different species or high genetic diversity of H. columbus populations. The objective of this study was to identify the Hoplolaimus spp. present in fields representing the main soybean-growing regions in South Carolina and North Carolina and to examine the genetic variability of these populations. In South Carolina, the only species found associated with soybean was H. columbus but, in North Carolina, H. Stephanus was the dominant species. The two species were never found together. Genetic variability analyses of a mitochondrial and a nuclear marker showed that only one haplotype was shared by the H. columbus populations. H. Stephanus showed higher genetic variability, with priv...
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High genetic diversity and geographic subdivision of three lance nematode species (Hoplolaimus spp.) in the United States
Ecology and Evolution, 2015Co-Authors: Claudia M. Holguin, John D. Mueller, Juan Antonio Baeza, Paula AgudeloAbstract:Lance nematodes (Hoplolaimus spp.) feed on the roots of a wide range of plants, some of which are agronomic crops. Morphometric values of amphimictic lance nematode species overlap considerably, and useful morphological characters for their discrimination require high magnification and significant diagnostic time. Given their morphological similarity, these Hoplolaimus species provide an interesting model to investigate hidden diversity in crop agroecosystems. In this scenario, H. galeatus may have been over-reported and the related species that are morphologically similar could be more widespread in the United States that has been recognized thus far. The main objectives of this study were to delimit Hoplolaimus galeatus and morphologically similar species using morphology, phylogeny, and a barcoding approach, and to estimate the genetic diversity and population structure of the species found. Molecular analyses were performed using sequences of the cytochrome c oxidase subunit 1 (Cox1) and the internal transcribed spacer (ITS1) on 23 populations. Four morphospecies were identified: H. galeatus, H. magnistylus, H. concaudajuvencus, and H. Stephanus, along with a currently undescribed species. Pronounced genetic structure correlated with geographic origin was found for all species, except for H. galeatus. Hoplolaimus galeatus also exhibited low genetic diversity and the shortest genetic distances among populations. In contrast, H. Stephanus, the species with the fewest reports from agricultural soils, was the most common and diverse species found. Results of this project may lead to better delimitation of lance nematode species in the United States by contributing to the understanding the diversity within this group.
Stephanos Matthaios - One of the best experts on this subject based on the ideXlab platform.
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Stephanus, Henricus (1531–1598)
Encyclopedia of Language & Linguistics, 2020Co-Authors: Stephanos MatthaiosAbstract:Henricus Stephanus was a scholar, philologist, and publisher, one of the most important representatives of humanism and the French renaissance of the 15th and 16th centuries, along with Guillame Bude (1468–1540) and Joseph Justus Scaliger (1540–1609). Henri E(s)tienne, the eldest son of Robert E(s)tienne, was born in Paris in 1531 and died in Lyon in 1598. From early on, he attended lectures on classical philology in the College Royal of Paris. Apart from Latin, which he knew almost at the level of mother tongue, Henri also learnt Greek, for which he showed a great love and impressive familiarity. The offspring of one of the most well-known publishing dynasties in France, Henri undertook the directorship of the family printing house after his father's death in 1559. His father Robert, who directed the business initially in Paris and then in Geneva, was also engaged as an author, printer, and editor; on the publishing activities of the E(s)tienne family see Pattison (1889) and Widmann (1970).
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Stephanus henricus 1531 1598
Encyclopedia of Language & Linguistics (Second Edition), 2006Co-Authors: Stephanos MatthaiosAbstract:Henricus Stephanus was a scholar, philologist, and publisher, one of the most important representatives of humanism and the French renaissance of the 15th and 16th centuries, along with Guillame Bude (1468–1540) and Joseph Justus Scaliger (1540–1609). Henri E(s)tienne, the eldest son of Robert E(s)tienne, was born in Paris in 1531 and died in Lyon in 1598. From early on, he attended lectures on classical philology in the College Royal of Paris. Apart from Latin, which he knew almost at the level of mother tongue, Henri also learnt Greek, for which he showed a great love and impressive familiarity. The offspring of one of the most well-known publishing dynasties in France, Henri undertook the directorship of the family printing house after his father's death in 1559. His father Robert, who directed the business initially in Paris and then in Geneva, was also engaged as an author, printer, and editor; on the publishing activities of the E(s)tienne family see Pattison (1889) and Widmann (1970).