TWO SPECIES OF FUNGUS INFECTING THE EUROPEAN SKIPPER THYMELICUS LINEOLA (LEPIDOPTERA: HESPERIIDAE) IN QUÉBEC

1982 ◽  
Vol 114 (1) ◽  
pp. 87-88
Author(s):  
Jeremy N. McNeil ◽  
D. M. MacLeod

Since its initial introduction into North America (Saunders 1916) the European skipper Thymelicus lineola (Ochs.) has been found attacking timothy grass throughout much of eastern Canada and the United States reaching pest status in Ontario (Arthur 1966), Prince Edward Island (Thompson 1977), and Quebec (Doyle and Richard 1971; McNeil et al. 1975). Bucher and Arthur (1961) examined skipper larvae, collected near Princeville, Ontario, for naturally occurring pathogens and reported the presence of a nuclear polyhedrosis virus, a cytoplasmic polyhedrosis gut virus, and a spore forming bacterium. They stated that such pathogens represented a possible means of biological control if the skipper became economically important. An epizootic caused by an NPV in dense skipper populations near Normandin, Quebec (Smirnoff 1974), led to a series of experiments evaluating its efficacy as a microbial insecticide (Smirnoff et al. 1976; Duchesne 1980), its long term impact on the population dynamics of T. lineola (Duchesne 1980), and its possible effects on non-target organisms (Smirnoff et al. 1979).

2017 ◽  
Vol 6 (4) ◽  
pp. 323-328
Author(s):  
Sheri J. Brock ◽  
Danielle Wadsworth ◽  
Shelby Foote ◽  
Mary E. Rudisill

Institutions of higher education have a responsibility to prioritize the needs of society and local communities. One essential need prevalent in all communities is to address the rise of obesity and health risks due to lack of participation in physical activity. In the United States, children spend a small percentage of time engaged in physical activity, and engagement decreases further in adolescence and adulthood. Collaborative partnerships between kinesiology faculty at universities and community organizations are one avenue for engaging children in physical activity. Partnerships must be multilevel and community wide to evoke change and have long-term impact and sustainability. Within the context of community-based research, we propose a three-step framework for establishing collaborative partnerships: (1) determining the needs of partners; (2) discussing expertise, services, and philosophy; and (3) providing a quality product. In addition, we outline and illustrate our experiences when collaborating with community partners to promote physical activity.


Economies ◽  
2020 ◽  
Vol 8 (4) ◽  
pp. 107
Author(s):  
Mirzosaid Sultonov

Russia’s international comportment and geostrategic moves, particularly the invasion of Ukraine and the annexation of Crimea in 2014, caused a substantial change in its international economic and political relations. In response to Russia’s invasion, the United States of America, the European Union, and their allies imposed a series of sanctions. In this study, by applying an exponential generalized autoregressive conditional heteroscedasticity model to daily logarithmic returns of the ruble exchange rate and the closing price index of the Russian Trading System, we analyze how the returns and volatility of the exchange rate and the stock price index responded to the sanctions and oil price changes. The estimation results show that the sanctions have a significant positive short-term impact on exchange rate returns. Economic sanctions have a significant negative long-term impact on the returns and variance of the exchange rate and a significant positive long-term impact on the returns of the stock price index. Financial sanctions have a positive/negative long-term impact on the returns of the exchange rate/stock price index and a positive long-term impact on the variance of the exchange rate and the stock price index. Corporate sanctions have a positive long-term impact on exchange rate returns.


Author(s):  
Erich A. Schneider ◽  
Neil Shah

While reasonable short-term resource price projections can be obtained by taking a bottom-up approach — constructing a supply curve based upon current production capacities and costs — this approach breaks down as the time horizon of the analysis lengthens. One approach to long-term price forecasting is to calibrate a simple model of a commodity market against past data. To that end, an analogy was drawn between the behavior of the uranium market and that of some three dozen materials for which the United States Geologic Survey (USGS) maintains data. This work adds to previously published results showing that the USGS-reported prices of minerals similar to uranium have consistently declined over the past century. In this paper, the extent to which uranium geology and extraction technologies are indeed analogous to other minerals is quantitatively addressed. A study of crustal abundances, ore grades being economically mined, concentration factors, market share of extraction techniques, years of proven reserve and other factors indicates that uranium is not at all exceptional with respect to the average of the USGS minerals. This suggests that, on the supply side, the analogy between the USGS minerals and uranium may indeed offer valuable insights into medium and long term uranium price behavior.


1984 ◽  
Vol 18 (3) ◽  
pp. 800-813
Author(s):  
Lawrence H. Fuchs

This essay explores the question of the impact of illegal migration on American unity and cultural pluralism in the United States. Assuming that over time the descendents of undocumented workers now in the United States will behave substantially like descendants of those who immigrate legally, the author concludes that the long-term impact of illegal migration barely will be noticeable provided it is reduced substantially in the future. The process of acculturation will work in the same way for both groups as it has for other ethnic groups in the past, given comparable levels of education and length of family residence in the United States. The author takes special notice of the illegal migration of Spanish-speaking workers and hypothesizes that the behavior of their descendants will not differ from the descendants of other immigrants, legal or illegal, in ways that disrupt fundamental patterns of American political unity and cultural pluralism.


1957 ◽  
Vol 89 (12) ◽  
pp. 533-546 ◽  
Author(s):  
N. R. Brown ◽  
R. C. Clark

Early in the present century the balsam woolly aphid, Adelges piceae (Ratz.), was introduced accidentally into North America. The history of its development and spread in the United States and Canada has been described by Balch (1952). At the present time, the adelgid occurs in eastern Canada over approximately the southern half of New Brunswick with an extension of the range in the extreme northeastern part of the Province, throughout Nova Scotia and Prince Edward Island, and in some areas of the southwestern and southeastern parts of Newfoundland.


2020 ◽  
Author(s):  
Lauren Hoehn-Velasco

Abstract This paper estimates the long-term impact of childhood exposure to a preventative public health programme on adult human capital. From 1908 to 1933, local governments in the United States instituted county-level health departments (CHDs) that provided preventative health services geared towards children. This paper estimates the long-term benefits of childhood exposure to this public programme using variation in CHD location, timing and age of exposure. CHD operation before the age of 5 increases men’s later-life earnings by 2% to 5%. Exposed boys not only perform better than later- and never-treated groups, but, after adding household fixed effects, exposed men earn more than their brothers.


1998 ◽  
Vol 130 (2) ◽  
pp. 243-244 ◽  
Author(s):  
P.M. Ebling ◽  
W.J. Kaupp

The eastern spruce budwonn, Choristoneuva fumiferana (Clem.) (Lepidoptera: Tortricidae), is subject to a variety of naturally occurring infectious diseases including nuclear polyhedrosis virus (NPV), granulosis virus (GV), cytoplasmic virus (CPV), and entomopox virus (EPV), of which the most intensively studied is NPV (CfMNPV) (Cunningham 1985). If CfMNPV is ever to be deemed an effective and economical alternative to chemical pesticides for spruce budworm control, additional research is required.


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