scholarly journals Distribution patterns of three sodium channel mutations associated with pyrethroid resistance in Rhipicephalus (Boophilus) microplus populations from North and South America, South Africa and Australia

Author(s):  
Leonore Lovis ◽  
Felix D. Guerrero ◽  
Robert J. Miller ◽  
Deanna M. Bodine ◽  
Bruno Betschart ◽  
...  
2020 ◽  
Author(s):  
Julissa Rojas-Sandoval

Abstract Cardamine flexuosa is a fast-growing herb that often behaves as a weed in both disturbed and undisturbed sites. It is native to Europe and found throughout much of Asia, and has naturalized in North and South America, South Africa and Australia. This species flowers vigorously and forms dense understorey root mats that alter successional processes and displace native plant species. C. flexuosa is a common agricultural weed in paddy fields, crop gardens and orchards and a common weed of gardens, greenhouses and lawns. It is listed as invasive in Myanmar, the Philippines, Hawaii, Cook Islands, South Georgia and the Sandwich Islands and the Bahamas.


2021 ◽  
Author(s):  
Julissa Rojas-Sandoval

Abstract Cardamine flexuosa is a fast-growing herb that often behaves as a weed in both disturbed and undisturbed sites. It is native to Europe and found throughout much of Asia, and has naturalized in North and South America, South Africa and Australia. This species flowers vigorously and forms dense understorey root mats that alter successional processes and displace native plant species. C. flexuosa is a common agricultural weed in paddy fields, crop gardens and orchards and a common weed of gardens, greenhouses and lawns. It is listed as invasive in Myanmar, the Philippines, Hawaii, Cook Islands, South Georgia and the Sandwich Islands and the Bahamas.


1905 ◽  
Vol 2 (5) ◽  
pp. 224-228 ◽  
Author(s):  
F. R. Cowper Reed

In North and South America and in South Africa there is a considerable variety of types of the Dalmaniles-branch in the Devonian period which have in many cases received distinctive subgeneric names; but species retaining the typical characters of the Silurian forms persist at any rate in North America. Many of these Devonian forms show incomplete second lateral furrows on the glabella, these furrows not reaching the axial furrows and causing a partial coalescence of the two middle lateral lobes. This tendency towards the fusion of the first and second lateral lobes of the glabella is a departure from the perfect segmentation found in typical Silurian members of Dalmanites, and has caused Clarke to group all such forms together into the subgenus or section Synphoria. This type of structure, as Van Ingen has recently shown, is not unknown amongst the Silurian species of Dalmanites in America, but it finds its most pronounced development in Devonian time and occurs in the groups Coronura, Corycephalus, Odontocephalus, and Probolium, all of which are put by Clarke in the section Synphoria. The marginal ornamentation and different processes on the pygidium and head-shield on which these four groups have been founded are scarcely of the same structural importance as the modifications of the glabellar segmentation. As in other families, the spinosity of these forms is the symbol of a last expiring effort before extinction.


1989 ◽  
Vol 67 (12) ◽  
pp. 2859-2863 ◽  
Author(s):  
Gordon F. Bennett ◽  
Michael A. Peirce

Hepatozoon parus n.sp. is described from the chickadees and titmice (Paridae) in North America and the United Kingdom. Hepatozoon atticorae (de Beaurepaire Aragão, 1911) Hoare, 1924 from swallows (Hirundinidae) is redescribed and the parasite is compared from hosts from North and South America, Jamaica, Europe, and South Africa.


2020 ◽  
Vol 110 (6) ◽  
pp. 1124-1131
Author(s):  
Mary Ortiz-Castro ◽  
Terra Hartman ◽  
Teresa Coutinho ◽  
Jillian M. Lang ◽  
Kevin Korus ◽  
...  

Bacterial leaf streak of corn, caused by Xanthomonas vasicola pv. vasculorum, has been present in South Africa for over 70 years, but is an emerging disease of corn in North and South America. The only scientific information pertaining to this disease on corn came from work done in South Africa, which primarily investigated host range on other African crops, such as sugarcane and banana. As a result, when the disease was first reported in the United States in 2016, there was very limited information on where this pathogen came from, how it infects its host, what plant tissue(s) it is capable of infecting, where initial inoculum comes from at the beginning of each crop season, how the bacterium spreads from plant to plant and long distance, what meteorological variables and agronomic practices favor disease development and spread, how many other plant species X. vasicola pv. vasculorum is capable of infecting or using as alternate hosts, and if the bacterium will be able to persist in all corn growing regions of the United States. There were also no rapid diagnostic assays available which initially hindered prompt identification prior to the development of molecular diagnostic tools. The goal of this synthesis is to review the history of X. vasicola pv. vasculorum and bacterial leaf streak in South Africa and its movement to North and South America, and highlight the recent research that has been done in response to the emergence of this bacterial disease.


1893 ◽  
Vol 10 (9) ◽  
pp. 401-412 ◽  
Author(s):  
Karl A. von Zittel

In a spirited treatise on the ‘Origin of our Animal World’ Prof. L. Rütimeyer, in the year 1867, described the geological development and distribution of the mammalia, and the relationship of the different faunas of the past with each other and with that now existing. Although, since the appearance of that masterly sketch the palæontological material has been, at least, doubled through new discoveries in Europe and more especially in North and South America, this unexpected increase has in most instances only served as a confirmation of the views which Rutimeyer advanced on more limited experience. At present, Africa forms the only great gap in our knowledge of the fossil mammalia; all the remaining parts of the world can show materials more or less abundantly, from which the course followed by the mammalia in their geological development can be traced with approximate certainty.


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