scholarly journals Diversity and Introduction History of Glycaspis brimblecombei Reflects a History of Bridgeheads and Distinct Invasions

2021 ◽  
Vol 4 ◽  
Author(s):  
Gudrun Dittrich-Schröder ◽  
Jeff R. Garnas ◽  
Daniela Arriagada-Cares ◽  
Rodrigo Ahumada ◽  
Brett P. Hurley ◽  
...  
Keyword(s):  
United States ◽  
South Africa ◽  
Insect Pests ◽  
Insect Pest ◽  
The United States ◽  
Coi Gene ◽  
La Réunion ◽  
Introduction History ◽  
Glycaspis Brimblecombei ◽  
History Of

Glycaspis brimblecombei is an invasive insect pest of Eucalyptus that has spread rapidly around the world since its first report in California in 1998. The pest now occurs on at least four continents where Eucalyptus is grown as a non-native plantation species. To characterize global routes of invasion for this insect, we characterized the sequences of a portion of the Cytochrome Oxidase 1 (COI) gene from 105 individuals from the invasive and native range, including from Australia, Brazil, Chile, La Réunion, Mauritius, South Africa and the United States. In addition, we developed 13 polymorphic microsatellite markers, of which we used 11 to characterize the diversity in the same 105 specimens. Our results suggest that there have been two independent introduction events from Australia, which is assumed to be the origin, to distinct parts of the adventive range. The first introduction was into the United States, from where it appears to have spread to South America and eventually to South Africa. This finding highlights the threat of bridgehead populations to accelerate pest invasions in Eucalyptus, even if those populations are on widespread non-commercial populations of Eucalyptus (as in California). A second introduction appears to have occurred on the islands of Mauritius and La Réunion and provides another example of the establishment of independent lineages of invasive global insect pests. This complex invasion pattern mirrors that found in other Eucalyptus pests.

scholarly journals Effects from Early Planting of Late-Maturing Sunflowers on Damage from Primary Insect Pests in the United States

Helia ◽  
2016 ◽  
Vol 39 (64) ◽  
pp. 45-56 ◽  
Author(s):  
J. R. Prasifka ◽  
L. F. Marek ◽  
D. K. Lee ◽  
S. B. Thapa ◽  
V. Hahn ◽  
...  
Keyword(s):  
United States ◽  
North Dakota ◽  
Sunflower Seed ◽  
Insect Pests ◽  
The United States ◽  
Total Percentage ◽  
History Of ◽  
Smicronyx Fulvus ◽  
Sunflower Moth ◽  
Homoeosoma Electellum

AbstractDelayed planting is recommended to reduce damage from sunflower insect pests in the United States, including the sunflower moth, Homoeosoma electellum (Hulst) and banded sunflower moth, Cochylis hospes Walsingham. However, in some locations, planting earlier or growing later-maturing hybrids could improve yield or oil content of sunflowers which would partially offset any added costs from insect pests or their management. Because the abundance and distribution of some sunflower insects have changed since recommendations for delayed planting were developed, experimental plots were grown in 2012 and 2013 at sites in North Dakota, Nebraska, Iowa, and Illinois. Sunflowers were planted two to four weeks earlier than normal, including hybrids that flower two to three weeks later than elite commercial hybrids. The sum of seed damaged by sunflower moth, banded sunflower moth, and red sunflower seed weevil, Smicronyx fulvus LeConte, (i. e., total percentage) was influenced by location, but not the relative maturity of tested entries. However, when damage attributed solely to the red sunflower seed weevil was analyzed, more damaged seed were found for late-maturing entries in North Dakota and Nebraska. In addition to the trial data, current pest populations are lower than when delayed planting was first recommended and insecticide use during sunflower bloom is both common and effective. Together, these observations suggest factoring insect pests into planting time decisions may be unnecessary, except for areas with a history of problems with severe pests that cannot be managed using insecticides (e. g., sunflower midge, Contarinia schulzi Gagné).

The Founding of New Societies: Studies in the History of the United States, Latin America, South Africa, Canada, and Australia

1966 ◽  
Vol 23 (2) ◽  
pp. 318
Author(s):  
Max Savelle ◽  
Louis Hartz ◽  
Kenneth D. McRae ◽  
Richard M. Morse ◽  
Richard N. Rosecrance ◽  
...  
Keyword(s):  
United States ◽  
South Africa ◽  
Latin America ◽  
The United States ◽  
History Of ◽  
America South

Keeping the Bombs in the Basement: U.S. Nonproliferation Policy toward Israel, South Africa, and Pakistan

2015 ◽  
Vol 40 (1) ◽  
pp. 47-86 ◽  
Author(s):  
Or Rabinowitz ◽  
Nicholas L. Miller
Keyword(s):  
United States ◽  
South Africa ◽  
Nuclear Weapons ◽  
The United States ◽  
West Germany ◽  
The Other ◽  
Nuclear Materials ◽  
Recent Scholarship ◽  
History Of ◽  
Nuclear Tests

How has the United States behaved historically toward friendly states with nuclear weapons ambitions? Recent scholarship has demonstrated the great lengths to which the United States went to prevent Taiwan, South Korea, and West Germany from acquiring nuclear weapons. Yet seemingly on the other side of the ledger are cases such as Israel, South Africa, and Pakistan, where the United States failed to prevent proliferation, and where many have argued that the United States made exceptions to its nonproliferation objectives given conflicting geopolitical goals. A reexamination of the history of U.S. nonproliferation policy toward Israel, South Africa, and Pakistan, based on declassified documents and interviews, finds that these cases are not as exceptional as is commonly understood. In each case, the United States sought to prevent these states from acquiring nuclear weapons, despite geopolitical constraints. Moreover, once U.S. policymakers realized that prior efforts had failed, they continued to pursue nonproliferation objectives, brokering deals to prevent nuclear tests, public declaration of capabilities, weaponization, or transfer of nuclear materials to other states.

‘The Actors Are Come Hither’: Shakespeare Productions by Travelling Companies in Asia

2016 ◽  
Vol 32 (1) ◽  
pp. 49-60 ◽  
Author(s):  
Kobayashi Kaori
Keyword(s):  
United States ◽  
South Africa ◽  
New York ◽  
Twentieth Century ◽  
Cultural History ◽  
British Empire ◽  
Performance Studies ◽  
The United States ◽  
Theatre Companies ◽  
History Of

In 1882, a critic of the journal Theatre noted that ‘the theatrical life of the present day might be described as a round of glorified strolling. The ‘circuits’ of Bristol, Norwich, and York of the last century are now replaced by those of the United States, South Africa, India, and Australia, and a modern actor thinks as little of a season in Melbourne or New York as his grandfather did of a week’s ‘starring’ in Edinburgh.’ Yet the story of how these Western theatre companies reached audiences in the faraway lands of the British Empire and Asia is still relatively untold. In this article Kaori Kobayashi explores in detail some itineraries around the turn of the twentieth century of these travelling companies, many of them relatively obscure, showing that the companies had a particular and significant impact on the development of Shakespearean performance and interpretation in the East. In essence, it is impossible to understand the rise of ‘Asian Shakespeare’ without also grasping how Western touring companies helped shape the East’s engagement with the West’s most canonical dramatist. Kaori Kobayashi is Professor of English at Nagoya City University, author of The Cultural History of The Taming of The Shrew (in Japanese, 2007), and editor of Shakespeare Performance Studies in Japan (in Japanese, 2010).

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