Ring species as bridges between microevolution and speciation

2001 ◽  
pp. 223-243 ◽  
Author(s):  
Darren E. Irwin ◽  
Jessica H. Irwin ◽  
Trevor D. Price
Keyword(s):  
Ring Species

scholarly journals Electrophilic boron carboxylate and phosphinate complexes

2019 ◽  
Vol 48 (6) ◽  
pp. 2038-2045 ◽  
Author(s):  
Diya Zhu ◽  
James H. W. LaFortune ◽  
Rebecca L. Melen ◽  
Douglas W. Stephan
Keyword(s):  
Carboxylic Acid ◽  
Membered Ring ◽  
Ring Species ◽  
Derivatives Of

A series of carboxylic acid derivatives of the form [RC(O)OB(C6F5)]2O, (R = Tol, Ph, C6F5, Me2BrC, Me) were prepared with the concurrent reduction to the corresponding aldehyde. The mechanism is proposed to proceed via cyclic eight-membered ring species.

The complex phylogeography of the Indo-MalayanAlophoixusbulbuls with the description of a putative new ring species complex

2015 ◽  
Vol 24 (21) ◽  
pp. 5460-5474 ◽  
Author(s):  
Jérôme Fuchs ◽  
Per G.P. Ericson ◽  
Céline Bonillo ◽  
Arnaud Couloux ◽  
Eric Pasquet
Keyword(s):  
Species Complex ◽  
Ring Species

Ring Species and Speciation

2006 ◽  
Author(s):  
Jeffery P Demuth ◽  
Loren H Rieseberg
Keyword(s):  
Ring Species

Thermochemistry and Group Additivity Values for Fused Two-Ring Species and Radicals

2019 ◽  
Vol 123 (15) ◽  
pp. 3418-3428 ◽  
Author(s):  
Lawrence Lai ◽  
Sarah Khanniche ◽  
William H. Green
Keyword(s):  
Group Additivity ◽  
Ring Species

Ascaridoid nematodes of amphibians and reptiles: Gedoelstascaris n.g. and Ortleppascaris n.g.

1978 ◽  
Vol 52 (3) ◽  
pp. 261-282 ◽  
Author(s):  
J. F. A. Sprent
Keyword(s):  
Excretory Pore ◽  
Type Species ◽  
Nerve Ring ◽  
New Genera ◽  
Ring Species

ABSTRACTTwo new genera, Gedoelstascarisand Ortleppascaris, are proposed for species of ascaridoid nematodes occurring in crocodilians and previously included in Dujardinascaris. Species included in Gedoelstascaris are vandenbrandeni Baylis, 1929 as type species and australiensis Baylis, 1931 (= salomonis Kreis, 1940). These species occur in Crocodylus spp. in Africa and Australia respectively and are characterised by lips with a rostral plate, without interlocking processes or dentigerous ridges, with well-developed interlabia, lobulated ventriculus, and excretory pore in front of the nerve ring. Species included in Ortleppascaris are: nigra Gedoelst, 1916 (= tasmani Ortlepp, 1932) as type species; alata Baylis, 1947; antipini Mozgovoy, 1950. These species occur in Crocodylus, Caiman and Alligator and are characterized by flat lips with alate margins, without anterior rostral plate, interlocking processes or dentigerous ridges, with weakly developed interlabia, by an irregular-shaped ventriculus, excretory pore behind or between the subventral lips, and by the presence of lateral alae or cuticular thickenings in the oesophageal region. The significance of this proposal is discussed in relation to the radiation and dispersal of ascaridoids of crocodilians.

scholarly journals Evaluation of Preventive Fungicide Applications for Fairy Ring Control in Golf Putting Greens and In Vitro Sensitivity of Fairy Ring Species to Fungicides

Plant Disease ◽  
2012 ◽  
Vol 96 (7) ◽  
pp. 1001-1007 ◽  
Author(s):  
G. L. Miller ◽  
M. D. Soika ◽  
L. P. Tredway
Keyword(s):  
Soil Temperature ◽  
Field Experiments ◽  
Chemical Properties ◽  
Creeping Bentgrass ◽  
Fungicide Sensitivity ◽  
Putting Greens ◽  
Growth Assay ◽  
Ring Species ◽  
The Impact

Fairy ring species induce symptoms on putting greens mostly indirectly, by modifying the soil physical or chemical properties. Therefore, preventive rather than curative fungicide applications may be more effective in managing fairy ring. Two field experiments were conducted on a creeping bentgrass research green to evaluate fairy ring control from preventive fungicide applications. A 3-year study investigated the optimal rate and soil temperature-based timing of a preventive application of triadimefon and tebuconazole. A 2-year study evaluated the impact of irrigation timing and fungicide + surfactant tank mixtures on the efficacy of preventive applications of triadimefon and triticonazole. Fungicide-treated plots in both studies exhibited less fairy ring severity than untreated plots. Data suggest that a 5-day average soil temperature range of 13 to 16°C may be suitable for initiating preventive applications. Symptoms occurred earlier in plots treated with a surfactant tank mix than in those treated with fungicide alone. Irrigation timing had no effect on fungicide performance. The sensitivity of 16 isolates representing major fairy ring species to flutolanil, propiconazole, tebuconazole, triadimefon, and triticonazole was determined with a mycelial growth assay. No significant differences in fungicide sensitivity were detected among species. Isolates had significantly higher 50% effective concentration values for triadimefon than for the other fungicides tested.

scholarly journals The SPECIES beamline at the MAX IV Laboratory: a facility for soft X-ray RIXS and APXPS

2017 ◽  
Vol 24 (1) ◽  
pp. 344-353 ◽  
Author(s):  
Samuli Urpelainen ◽  
Conny Såthe ◽  
Walan Grizolli ◽  
Marcus Agåker ◽  
Ashley R. Head ◽  
...  
Keyword(s):  
Photoelectron Spectroscopy ◽  
Ambient Pressure ◽  
Unique Property ◽  
Unique Combination ◽  
X Ray ◽  
Fast Switching ◽  
X Ray Scattering ◽  
And Performance ◽  
Ring Species ◽  
X Ray Absorption

SPECIES is an undulator-based soft X-ray beamline that replaced the old I511 beamline at the MAX II storage ring. SPECIES is aimed at high-resolution ambient-pressure X-ray photoelectron spectroscopy (APXPS), near-edge X-ray absorption fine-structure (NEXAFS), X-ray emission spectroscopy (XES) and resonant inelastic X-ray scattering (RIXS) experiments. The beamline has two branches that use a common elliptically polarizing undulator and monochromator. The beam is switched between the two branches by changing the focusing optics after the monochromator. Both branches have separate exit slits, refocusing optics and dedicated permanent endstations. This allows very fast switching between two types of experiments and offers a unique combination of the surface-sensitive XPS and bulk-sensitive RIXS techniques both in UHV and at elevated ambient-pressure conditions on a single beamline. Another unique property of the beamline is that it reaches energies down to approximately 27 eV, which is not obtainable on other current APXPS beamlines. This allows, for instance, valence band studies under ambient-pressure conditions. In this article the main properties and performance of the beamline are presented, together with selected showcase experiments performed on the new setup.

scholarly journals The great tit (Parus major) - a misclassified ring species

2005 ◽  
Vol 86 (2) ◽  
pp. 153-174 ◽  
Author(s):  
MARTIN PÄCKERT ◽  
JOCHEN MARTENS ◽  
SIEGFRIED ECK ◽  
ALEXANDER A. NAZARENKO ◽  
OLGA P. VALCHUK ◽  
...  
Keyword(s):  
Parus Major ◽  
Great Tit ◽  
Ring Species
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