Trypanosoma ambystomae in Ambystoma spp. (order Caudata) in southern Ontario

1980 ◽  
Vol 58 (3) ◽  
pp. 466-469
Author(s):  
Patrick T. K. Woo ◽  
James P. Bogart ◽  
David L. Servage
Keyword(s):  
North America ◽  
Host Range ◽  
Ambystoma Maculatum ◽  
Western North America ◽  
Southern Ontario ◽  
First Report ◽  
Ambystoma Jeffersonianum ◽  
Ambystoma Laterale ◽  
Division Process

Using the haematocrit centrifuge technique, Trypanosoma ambystomae was recorded from Ambystoma jeffersonianum, Ambystoma platineum, Ambystoma laterale, Ambystoma maculatum, and Ambystoma tremblayi from five areas in southern Ontario. The percentage of infected animals varied from about 5% in A. tremblayi to 27% in A. platineum and A. maculatum. This report not only expands the host range for the trypanosome, it is also the first report of it being found outside western North America. The division process of the trypanosome in the salamander is described and it is shown that it can be maintained in salamanders in the laboratory by blood inoculation.

scholarly journals First report of the western conifer seed bug, Leptoglossus occidentalis Heidemann, 1910 (Hemiptera, Coreidae) in Paraguay

2021 ◽  
Vol 8 (2) ◽  
pp. 12-14
Author(s):  
Bolívar R. Garcete-Barrett ◽  
◽  
Sergio D. Rios ◽  
Sergio Galeano ◽  
◽  
...  
Keyword(s):  
North America ◽  
Western North America ◽  
First Report ◽  
Leptoglossus Occidentalis ◽  
Conifer Seed ◽  
First Time ◽  
Western Conifer Seed Bug

The Western conifer seed bug, Leptoglossus occidentalis Heidemann, 1910, native to western North America and in ongoing worldwide expansion, is recorded from Paraguay for the first time.

scholarly journals First Report of Swiss Needle Cast Caused by Phaeocryptopus gaeumannii on Douglas-Fir in Turkey

Plant Disease ◽  
2003 ◽  
Vol 87 (12) ◽  
pp. 1536-1536 ◽  
Author(s):  
F. Temel ◽  
J. K. Stone ◽  
G. R. Johnson
Keyword(s):  
North America ◽  
Volume Growth ◽  
Douglas Fir ◽  
State University ◽  
Western North America ◽  
Needle Cast ◽  
First Report ◽  
Western Asia ◽  
Swiss Needle Cast ◽  
Natural Range

Two 15-year-old Douglas-fir (Pseudotsuga menziesii var. menziesii (Mirb.) Franco) test plantations at Artvin, in the eastern Black Sea Coast Region of Turkey, were inspected in July 2003. Trees in both plantations had yellow-to-brown foliage, and most trees retained only the current year's needles, resulting in sparse tree crowns. Numerous minute, black fruit bodies were present along the rows of stomata on the lower surfaces of needles from both plantations. Laboratory examination revealed that the fruiting bodies that emerged through the stomata were those of Phaeocryptopus gaeumannii [Rohde] Petrak, the causal agent of Swiss needle cast (SNC). Although low infection levels are relatively harmless, heavily infected trees lose all but the current year's foliage, with resulting average volume growth reductions of 23 to 52% (2,3). The pathogen occurs throughout the natural range of Douglas-fir in western North America, where it is native, as well as in eastern North America, Europe, Australia, and New Zealand, where both host and fungus have been introduced (1,2). The pathway of introduction of the pathogen to Turkey is unknown. Douglas-fir is the only known host of P. gaeumannii, and the pathogen is not known to be seedborne. Where P. gaeumannii has been introduced outside of western North America, infected nursery stock has been considered the most probable source (1). However, the affected Artvin plantations were established with seedlings produced in Turkey by using seed obtained from various sources. Earlier Douglas-fir plantations in Turkey date from 1953 and were established by using seed originating from France. The possibility that the pathogen could have arrived with untracked Douglas-fir seedlings from outside Turkey imported by arboreta or private nurseries cannot be excluded. Alternatively, scattered Douglas-fir plantations could have served as links between the Artvin infestation and known infested areas in central and eastern Europe, with spread occurring via windborne ascospores, similar to the spread of the pathogen to Denmark from the British Isles (ca. 1930) (1). Presence of severe SNC infections in Douglas-fir test sites at Artvin could hamper efforts to use this species in operational forestry in Turkey. To our knowledge, this is the first report of the occurrence of Swiss needle cast on Douglas-fir in western Asia. Voucher specimens have been deposited in the Oregon State University herbarium (OSC 106394-106403). References: (1) J. S. Boyce. Phytopathology 30:649, 1940. (2) E. M. Hansen et al. Plant Dis. 84:773, 2000. (3) D. Maguire et al. West. J. Appl. For. 17:86, 2002.

scholarly journals First Report of Puccinia coronata var. coronata sensu stricto Infecting Alder Buckthorn in the United States

2017 ◽  
Vol 18 (2) ◽  
pp. 84-86
Author(s):  
Shawn C. Kenaley ◽  
Geoffrey Ecker ◽  
Gary C. Bergstrom
Keyword(s):  
United States ◽  
North America ◽  
Host Range ◽  
Geographic Distribution ◽  
Phylogenetic Analyses ◽  
Rust Fungus ◽  
The United States ◽  
Sensu Stricto ◽  
Puccinia Coronata ◽  
First Report

Field symptoms, host distribution, pathogen morphology, and phylogenetic analyses clearly demonstrated that the rust fungus infecting alder buckthorn in Connecticut is Puccinia coronata var. coronata sensu stricto. To our knowledge, this is the first report and confirmation of P. coronata var. coronata s.s. in the United States. Additional collections from purported aecial and telial hosts of P. coronata var. coronata s.s. are necessary to determine its host range, geographic distribution, and incidence within the United States and elsewhere in North America.

A Skipper, Thymelicus lineola (Ochs.) (Lepidoptera: Hesperiidae) and its Parasites in Ontario

1962 ◽  
Vol 94 (10) ◽  
pp. 1082-1089 ◽  
Author(s):  
A. P. Arthur
Keyword(s):  
North America ◽  
Present Author ◽  
The West ◽  
West Side ◽  
Southern Ontario ◽  
First Report ◽  
History Of ◽  
Lake Simcoe ◽  
First Time ◽  
Extensive Damage

The European, or Essex skipper, Thymelicus (= Adopaea) lineola (Ochs.), was accidentally introduced into North America at London, Ontario, sometime before 1910 (Saunders, 1916). The history of its subsequent spread through southern Ontario and adjoining parts of Michigan and Ohio was reviewed by Pengelly (1961), who received the first report of extensive damage to hay and pasture crops by this insect in Ontario from the Markdale area of Grey County in 1956. A survey in 1958 (Pengelly, 1961) showed that the skipper “appeared to be present throughout the southern part of the province except for the Bruce peninsula and possibly the Windsor area. The northeasterly boundary appeared to he along a line from Midland, south around the west side of Lake Simcoe, east to Lindsay and south to Whitby.” The present author collected T. lineola larvae from the Belleville area for the first time in 1959.

The Early Mississippian (Osagean) ammonoid Dzhaprakoceras (Cephalopoda) from Utah

2000 ◽  
Vol 74 (5) ◽  
pp. 853-857 ◽  
Author(s):  
Morris S. Petersen ◽  
Dieter Korn ◽  
Jürgen Kullmann
Keyword(s):  
North America ◽  
Western North America ◽  
First Report ◽  
Eastern Hemisphere

The Mississippian ammonoid genus Dzhaprakoceras Popov, 1965, well known in the eastern hemisphere, is reported from the Delle Member of the Deseret Limestone at Flux and Lakeside Mountains, Tooele County, Utah. This is the first report of the genus in western North America. The ammonoids, D. gordoni n. sp. and D. djaprakense (Librovitch, 1927) occur with mehli—Lower texanus Zone conodonts indicating a middle Osagean (earliest Viséan) age.

scholarly journals A new western Canadian record of Epeoloides pilosulus (Cresson), with discussion of ecological associations, distribution and conservation status in Canada

2018 ◽  
Vol 6 ◽  
pp. e22837 ◽  
Author(s):  
Cory Sheffield ◽  
Jennifer Heron
Keyword(s):  
Nova Scotia ◽  
North America ◽  
Conservation Status ◽  
Western North America ◽  
Southern Ontario ◽  
Ecological Associations ◽  
The 1960S

Epeoloidespilosulus, one of the rarest bees in North America, is a cleptoparasite ofMacropisbees which themselves are uncommon oligoleges of oil-producingLysimachiaflowers. Only two specimens of the cleptoparasite have been reported from Canada since the 1960s, both from Nova Scotia.A recently collected specimen ofEpeoloidespilosulusfrom Alberta, Canada confirms this species from that province and greatly increases its known range in western North America. This record and additional specimens from southern Ontario (one collected in 1978) have implications for the conservation status of this COSEWIC assessed species in Canada, which are discussed.

scholarly journals First Report of Nemesia ring necrosis virus in North America in Ornamental Plants from California

Plant Disease ◽  
2006 ◽  
Vol 90 (9) ◽  
pp. 1263-1263 ◽  
Author(s):  
D. M. Mathews ◽  
J. A. Dodds
Keyword(s):  
North America ◽  
Host Range ◽  
Ornamental Plants ◽  
Chenopodium Quinoa ◽  
Systemic Infection ◽  
Enzyme Linked Immunosorbent Assay ◽  
Rt Pcr ◽  
Necrosis Virus ◽  
Specific Primers ◽  
First Report

During the last several years, two California propagators have detected what was believed to be the tymovirus Scrophularia mottle virus (ScrMV) in several ornamental plant species on the basis of enzyme-linked immunosorbent assay (ELISA) using a ScrMV antibody system. Symptoms were generally mild, ranging from nonsymptomatic to a mild mosaic. Our laboratory confirmed the presence of a tymovirus in one Verbena sp. and two Diascia spp. cultivars on the basis of dsRNA analysis that showed bands of approximately 6,400 and 300 nucleotides representing the genomic and coat protein subgenomic RNAs, respectively. While these plants and those that were experimentally infected (Nicotiana benthamiana and N. clevelandii) also tested positive for ScrMV by ELISA, the host range did not match that published for ScrMV, notably the lack of symptoms in Chenopodium quinoa and the lack of systemic infection in Datura stramonium. A similar host range result was reported in Europe for another tymovirus that cross reacts with ScrMV antiserum, Nemesia ring necrosis virus (NeRNV) (2). Using NeRNV specific primers (1), we used reverse transcription-polymerase chain reaction (RT-PCR) to test plants that had previously tested positive for ScrMV by ELISA and had dsRNAs typical of a tymovirus. An amplicon of the appropriate size (960 bp) for NeRNV was obtained from each of five samples. Using ScrMV specific primers, the same samples failed to amplify the expected product. We have found NeRNV in three Diascia spp., one Verbena sp., and one Nemesia sp. plants in two counties in California (Riverside and San Diego). When the RT-PCR products were sequenced, they all had 99% sequence identities to NeRNV with 4 to 7 single nucleotide changes (GenBank Accession Nos. DQ648150 to DQ648154). Notably, each of the five amplicons had changes at nucleotides 5134 (G to C) and 5549 (G to T) when compared with the European isolates of NeRNV, which did not result in any amino acid changes. To our knowledge, this is the first report of NeRNV in North America and more specifically, in California. References: (1) R. Koenig et al. J. Gen. Virol. 86:1827, 2005. (2) A. L. Skelton et al. Plant Pathol. 53:798, 2004.

scholarly journals Bur Buttercup, Ranunculus testiculatus, New to Eastern Canada

2006 ◽  
Vol 120 (3) ◽  
pp. 319
Author(s):  
Michael J. Oldham ◽  
Clive E. Goodwin ◽  
Sean Blaney
Keyword(s):  
North America ◽  
Western North America ◽  
Eastern Canada ◽  
Southern Ontario

Bur Buttercup (Ranunculus testiculatus) is newly reported for eastern Canada based on two collections from campgrounds in southern Ontario. This vernal, annual, Eurasian weed is widespread in western North America and is expanding its range in the east; it should be expected elsewhere in eastern Canada. Bur Buttercup is known to be toxic to livestock.

First report ofPineus strobi(Hartig, 1839) (Hemiptera: Adelgidae) in western North America

2018 ◽  
Vol 94 (1) ◽  
pp. 40-42 ◽  
Author(s):  
Molly Darr ◽  
Scott Salom ◽  
Rachel K. Brooks ◽  
Robert G. Foottit ◽  
Gary L. Miller ◽  
...  
Keyword(s):  
North America ◽  
Western North America ◽  
First Report
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