Elm Bark Beetles in Southwestern Ontario

1957 ◽  
Vol 89 (6) ◽  
pp. 275-280 ◽  
Author(s):  
R. J. Finnegan
Keyword(s):  
United States ◽  
Bark Beetles ◽  
The United States ◽  
Dutch Elm Disease ◽  
Quebec City ◽  
Elm Bark Beetles ◽  
Heavy Mortality ◽  
Infection Spread ◽  
Cleveland Ohio

The Dutch elm disease is caused by the fungus Ceratostomella ulmi (Schwartz) Buis. It was first reported in the United States at Cleveland, Ohio, in 1930 (ll), and has since spread westward to Colorado and northeastward into Vermont (22). It is believed that the disease was accidentally introduced into the United States from Europe, where it has caused heavy mortality of elms since its discovery in 1919 (7, 19, 20). In Canada the disease was first recorded by Pomerleau (14) at St. Ours, Que. This infection proved to be centred around Sorel, Que., and since it was isolated from the nearest known infection in the United States by approximately 200 miles, is regarded as a separate introduction from Europe. The Sorel infection spread very rapidly, and by the end of 1950, the area between Montreal, Quebec City, and Sherbrooke was heavily infested by the fungus (17). I t has since spread westward as far as Ottawa and Kingston in 0ntario (16).

Dutch Elm Disease Eradication in the United States

1935 ◽  
Vol 28 (3) ◽  
pp. 524-528 ◽  
Author(s):  
L. H. Worthley ◽  
O. N. Liming
Keyword(s):  
United States ◽  
The United States ◽  
Dutch Elm Disease ◽  
Disease Eradication

scholarly journals Exotic bark- and wood-boring Coleoptera in the United States: recent establishments and interceptions

2006 ◽  
Vol 36 (2) ◽  
pp. 269-288 ◽  
Author(s):  
Robert A Haack
Keyword(s):  
United States ◽  
Bark Beetles ◽  
The United States ◽  
Agrilus Planipennis ◽  
Xyleborus Glabratus ◽  
Inspection Service ◽  
Phoracantha Recurva ◽  
Wood Boring ◽  
Summary Data ◽  
Hylurgops Palliatus

Summary data are given for the 25 new species of exotic bark- and wood-boring Coleoptera first reported in the continental United States between 1985 and 2005, including 2 Buprestidae (Agrilus planipennis and Agrilus prionurus), 5 Cerambycidae (Anoplophora glabripennis, Callidiellum rufipenne, Phoracantha recurva, Sybra alternans, and Tetrops praeusta), and 18 Scolytidae (Ambrosiodmus lewisi, Euwallacea fornicatus, Hylastes opacus, Hylurgops palliatus, Hylurgus ligniperda, Orthotomicus erosus, Phloeosinus armatus, Pityogenes bidentatus, Scolytus schevyrewi, Tomicus piniperda, Xyleborinus alni, Xyleborus atratus, Xyleborus glabratus, Xyleborus pelliculosus, Xyleborus pfeilii, Xyleborus seriatus, Xyleborus similis, and Xylosandrus mutilatus). In addition, summary interception data are presented for the wood-associated beetles in the families Bostrichidae, Buprestidae, Cerambycidae, Curculionidae, Lyctidae, Platypodidae, and Scolytidae, based on the USDA Animal and Plant Health Inspection Service "Port Information Network" database for plant pests intercepted at US ports of entry from 1985 to 2000. Wood-associated insects were most often intercepted on crating, followed by dunnage and pallets. The five imported products most often associated with these 8341 interceptions were tiles, machinery, marble, steel, and ironware. A significantly higher proportion of the most frequently intercepted true bark beetles have become established in the United States compared with the less frequently intercepted species.

New Species of Bark Beetles (Coleoptera: Scolytidae), Mostly Mexican. Part II

1956 ◽  
Vol 88 (5) ◽  
pp. 231-240
Author(s):  
Stephen L. Wood
Keyword(s):  
United States ◽  
New Species ◽  
Bark Beetles ◽  
The United States ◽  
University Of Kansas ◽  
United States Mexico ◽  
Mexican Species

In this paper 12 new species of scolytid beetles of the tribe Micracini are described from the United States, Mexico and Honduras. Notes concerning the geographical distributions and the biologies of a few other Mexican species are also included. Unless stated otherwise, the specimens taken in Mexico were collected by the author while with the 1953 expedition of the Francis Huntington Snow Entomological Museum (University of Kansas, Lawrence). The new species represent the following genera: Micracisella (3), Thysanoes (2), Pseudothysanoes (3), Crytocleptes (3), and Stenoclyptus (1).

scholarly journals Molecular and cellular aspects of Dutch elm disease

2005 ◽  
Vol 72 (1) ◽  
pp. 1-13 ◽  
Author(s):  
M.B. Sticklen ◽  
M.G. Bolyard ◽  
R.K. Hajela ◽  
L.C. Dufresne
Keyword(s):  
Bark Beetles ◽  
Defense Mechanism ◽  
Molecular Level ◽  
Dutch Elm Disease ◽  
Host Responses ◽  
Control Mechanisms ◽  
Cellular Interactions ◽  
Molecular Approaches ◽  
Biochemical Level ◽  
Elm Bark Beetles

The folio wing review gives an overview of current research in the area of molecular and cellular interactions in Dutch elm disease. This vascular wilt disease is caused by the fungus Ophiostoma ulmi and is transmitted from diseased to healthy trees by the elm bark beetles. Fungal toxins are described which are associated with pathogenesis, one of which, ceratoulmin, is under investigation at the molecular level, particularly regarding its mode of action and localization. The fungus has also been examined at the molecular level to differentiate between aggressive and non-aggressive isolates on the basis of protein and nucleic acid profiles. Genetic linkage maps are being developed to correlate disruption of certain genes with the loss of pathogenicity. Viral and bacterial antagonists of the fungus, which may serve as biological control mechanisms for Dutch elm disease, have been characterized, as have several of the active molecules responsible for control. Host responses are also discussed at the molecular and biochemical level, including phytoalexins and defense mechanism elicitors. Several Unes of investigation are discussed to provide an overview of molecular approaches to understanding and manipulating the organisms involved with the ultimate goal of controlling Dutch elm disease.

Special-Color Pavement Marking for Highway Work Zones: Literature Review of International Practices

2017 ◽  
Vol 2617 (1) ◽  
pp. 78-86
Author(s):  
John W. Shaw ◽  
Madhav V. Chitturi ◽  
David A. Noyce
Keyword(s):  
United States ◽  
New Zealand ◽  
The United States ◽  
Road User ◽  
Quebec City ◽  
Work Zones ◽  
Arterial Streets ◽  
Pavement Markings ◽  
Lighting Conditions ◽  
Pavement Marking

Roadway lanes are often repositioned to accommodate highway work operations; as a result, pavement markings need to be altered. Although there are various methods for removing or obscuring existing pavement markings, “ghost” markings often remain at the locations of the old lane lines. These ghost markings can be quite conspicuous under certain lighting conditions, creating the potential for road user confusion. The Canadian province of Ontario and several European countries routinely use a special marking color (orange or yellow) to increase the salience of temporary lane lines. Special-color markings have also been used experimentally in Australia; New Zealand; Quebec City, Canada; and the United States. As a first step toward identifying the benefits and risks of special-color markings, existing practices from several countries are reviewed and summarized. The review identified a significant policy difference among jurisdictions: in some jurisdictions special-color markings override existing markings (so that the old markings are left in place), whereas other jurisdictions use special-color temporary marking but also attempt to remove old lane lines. The recent special-color marking demonstration projects in Australia, Canada, New Zealand, and the United States have been on major freeways, but European practice suggests that special-color marking could have significant benefit for urban arterial streets.

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