Seasonal occurrence and within-field distribution of Lygus lineolaris on buckwheat in Manitoba

2005 ◽  
Vol 137 (5) ◽  
pp. 598-601 ◽  
Author(s):  
I.L. Wise ◽  
B.G. Elliott ◽  
A.M. Mostafa
Keyword(s):  
North America ◽  
Field Distribution ◽  
Common Species ◽  
Fagopyrum Esculentum ◽  
Seasonal Occurrence ◽  
Lygus Lineolaris ◽  
Western Canada

Plant bugs, species of the genus Lygus Kelton (Hemiptera: Miridae), damage many crops in western Canada (Kelton 1980; Wise and Lamb 1998; Wise et al. 2000). Lygus lineolaris (Palisot de Beauvois), L. borealis (Kelton), and L. elisus Van Duzee are the most common species in the eastern prairie of Canada (Schwartz and Foottit 1992). Manitoba is the leading producer of buckwheat, Fagopyrum esculentum Moench (Polygonaceae), in North America, growing about 15 000 ha annually (Canada Grains Council 1999). Plant bug adults are known to oviposit (Painter 1927) and feed on buckwheat (Bugg and Ellis 1990), but little is known about their ability to develop on this crop. The objectives of the study were to determine (i) the species of plant bugs on buckwheat, (ii) their ability to develop on buckwheat, and (iii) the distribution of plant bugs within commercial fields of buckwheat in Manitoba.

SEASONAL OCCURRENCE OF PLANT BUGS (HEMIPTERA: MIRIDAE) ON OILSEED FLAX (LINACEAE) AND THEIR EFFECT ON YIELD

2000 ◽  
Vol 132 (3) ◽  
pp. 369-371 ◽  
Author(s):  
I.L. Wise ◽  
R.J. Lamb
Keyword(s):  
Linum Usitatissimum ◽  
Yield Loss ◽  
Common Species ◽  
Lygus Lineolaris ◽  
Western Canada ◽  
Oilseed Crop ◽  
Feeding Damage ◽  
Complete Development ◽  
The Common ◽  
Effect On Yield

Plant bugs, Lygus Kelton, damage many crops in western Canada (Kelton 1980; Wise and Lamb 1998; Wise et al. 2000), the common species in Manitoba being Lygus lineolaris (Palisot de Beauvois), Lygus borealis (Kelton), and Lygus elisus Van Duzee (Gerber and Wise 1995). Reports of plant bugs on flax, Linum usitatissimum L., are limited to an oviposition study (Painter 1927) and anecdotal descriptions of feeding damage in Canada (Beirne 1972) and Europe (Ferguson and Fitt 1991). In western Canada, flax is grown as an oilseed crop on about 600 000 ha annually (Canada Grains Council 1999). The objectives of this study were to determine (i) the species of plant bugs in oilseed flax, (ii) their ability to complete development in flax, (iii) the number of generations they complete, and (iv) the yield loss they cause.

INFESTIBILITY OF OILSEEDS, CLOVER, AND MILLET BY STORED-PRODUCT INSECTS

1972 ◽  
Vol 52 (4) ◽  
pp. 431-440 ◽  
Author(s):  
R. N. SINHA
Keyword(s):  
Tribolium Castaneum ◽  
Common Species ◽  
Western Canada ◽  
Cryptolestes Ferrugineus ◽  
Potential Danger ◽  
Complete Development ◽  
Stored Product Insects ◽  
Oryzaephilus Mercator ◽  
Insect Attack ◽  
New Pest

Infestation potential of 16 cultivars of flax, mustard, rape, sunflower, millet, and clover seeds to five common species of stored-product insects was determined. When multiplication was used as a criterion, whole seeds were resistant to insect attack although minor infestation occurred on certain cultivars. Although some species of insects could complete development on certain cultivars, few could reproduce well on clover and mustard cultivars. Oilseeds were more susceptible to Oryzaephilus mercator than to any other insect species. Cryptolestes ferrugineus, which thrived on the millet cultivars Crown and Siberian, neither reproduced nor completed development on any of the oilseed and forage cultivars. All cultivars of crushed Noralta, Raja, and Redwood flax were susceptible to: O. mercator, O. surinamensis, and Tribolium castaneum; Echo and Target rape only to O. mercator; Armavirec, Krasnodarets, Mennonite, and Peredovic sunflowers to all insects except C. ferrugineus; and Crown and Siberian millet to all insects. Tribolium confusum reproduced only on sunflower and millet cultivars. The potential danger of stored oilseeds in Western Canada from a new pest, O. mercator, was evaluated.

The Caragana Aphid, Acyrthosiphon caraganae (Cholod.) in Western Canada, and its Separation from the Pea Aphid

1962 ◽  
Vol 94 (10) ◽  
pp. 1075-1077 ◽  
Author(s):  
A. G. Robinson ◽  
G. A. Bradley
Keyword(s):  
British Columbia ◽  
North America ◽  
Chemical Control ◽  
Pea Aphid ◽  
Annual Reports ◽  
Western Canada ◽  
Forest Insect ◽  
Disease Survey ◽  
Caragana Arborescens

Except for occasional references in the Annual Reports of the Forest Insect and Disease Survey of infestations of an aphid on caragana (Caragana arborescens Lam.) in Western Canada and a note on chemical control (Bradley, 1952), there is no published record known to the authors of the occurrence of the caragana aphid, Acyrthosiphon caraganae (Cholod.), in North America. MacNay (1953) summarized reports that severe infesrations of aphids, “probably mainly the caragana aphid”, occurred on caragana in 1952 in the East Kootenays of British Columbia, and at several places in Alberta and Saskatchewan. At some localities 100 per cent defoliation was reported.

Toruiopsis candida. [Descriptions of Fungi and Bacteria].

1986 ◽  
Author(s):  
C. Davis
Keyword(s):  
North America ◽  
South America ◽  
Geographical Distribution ◽  
Bovine Mastitis ◽  
Common Species ◽  
Yeast Flora ◽  
Torulopsis Glabrata ◽  
Systemic Infections ◽  
Intravenous Inoculation

Abstract A description is provided for Toruiopsis candida. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. DISEASE: Torulopsis candida is one of the less common species of the commensal yeast flora in humans and has been associated with both superficial and systemic infections. The organism has occasionally been implicated in cases of fungal septicaemia and has been isolated from urine, vagina and feet. Veterinary associations of T. candida include bovine mastitis, bovine and ovine abortion and isolation from cervical swats in mares. Pathogenicity studies have been carried out by Khon et al. who found Torulopsis glabrata to be non-pathogenic to normal mice following intravenous inoculation with up to 10 cells but 50% mortality in cortisone treated mice inoculated with similar doses (Sabouraudia 18: 319-327, 1980). The diseased mice were found to have macroscopic lesions on liver, lung, kidney and spleen. GEOGRAPHICAL DISTRIBUTION: Africa (Sudan); Asia (Japan, Kuwait); Europe (Austria, Belgium, Czechoslovakia, Finland, France, Greece, Italy, UK); North America (USA); South America (Brazil, Venezuela).

Bioclimatic assessment of abiotic factors affecting relative abundance and distribution of wheat stem sawfly (Hymenoptera: Cephidae) in western Canada

2018 ◽  
Vol 151 (1) ◽  
pp. 16-33
Author(s):  
Owen Olfert ◽  
Ross M. Weiss ◽  
Haley Catton ◽  
Héctor Cárcamo ◽  
Scott Meers
Keyword(s):  
North America ◽  
Geographic Distribution ◽  
Relative Abundance ◽  
General Circulation ◽  
General Circulation Models ◽  
Simulation Software ◽  
Economic Losses ◽  
Western Canada ◽  
Wheat Stem Sawfly ◽  
Ecoclimatic Index

AbstractWheat stem sawfly, Cephus cinctus Norton (Hymenoptera: Cephidae), indigenous to North America, quickly adapted from host native grasses to wheat crops (Triticum Linnaeus (Poaceae)) with expansion of agriculture on the Great Plains of North America. Bioclimatic simulation tools, such as Climex, predict the potential geographic distribution and establishment of insects in ecosystems, based on climate. The ecoclimatic index, a measure of ecological suitability, integrates potential population growth with stresses to produce estimates of relative abundance. This simulation software was used to develop a bioclimate model for C. cinctus in western Canada. Results fostered a better understanding of how C. cinctus responded to selected climate variables. Two general circulation models were then applied to assess the response of C. cinctus populations to future climate. Relative to current climate, predicted changes in C. cinctus distribution and relative abundance were greatest for 2030, with a small further increase for 2070. Across the Prairies and Boreal Plains Ecozones, changes in ecoclimatic index were greater than in geographic distribution. Both general circulation models indicated most of this area would be categorised as very favourable. This suggests that the potential for pest populations could expand into areas that do not currently experience economic losses associated with C. cinctus.

An Early Cretaceous (Berriasian) fossil-bearing locality from the Rocky Mountains of Alberta, yielding the oldest dinosaur skeletal remains from western Canada

2020 ◽  
Vol 57 (4) ◽  
pp. 542-552 ◽  
Author(s):  
Ramon S. Nagesan ◽  
James A. Campbell ◽  
Jason D. Pardo ◽  
Kendra I. Lennie ◽  
Matthew J. Vavrek ◽  
...  
Keyword(s):  
North America ◽  
Early Cretaceous ◽  
Depositional Environment ◽  
Upper Cretaceous ◽  
Upper Jurassic ◽  
High Energy ◽  
Western Canada ◽  
Western North America ◽  
Terrestrial Vertebrate ◽  
Overlying Strata

Western North America preserves iconic dinosaur faunas from the Upper Jurassic and Upper Cretaceous, but this record is interrupted by an approximately 20 Myr gap with essentially no terrestrial vertebrate fossil localities. This poorly sampled interval is nonetheless important because it is thought to include a possible mass extinction, the origin of orogenic controls on dinosaur spatial distribution, and the origin of important Upper Cretaceous dinosaur taxa. Therefore, dinosaur-bearing rocks from this interval are of particular interest to vertebrate palaeontologists. In this study, we report on one such locality from Highwood Pass, Alberta. This locality has yielded a multitaxic assemblage, with the most diagnostic material identified so far including ankylosaurian osteoderms and a turtle plastron element. The fossil horizon lies within the upper part of the Pocaterra Creek Member of the Cadomin Formation (Blairmore Group). The fossils are assigned as Berriasian (earliest Cretaceous) in age, based on previous palynomorph analyses of the Pocaterra Creek Member and underlying and overlying strata. The fossils lie within numerous cross-bedded sandstone beds separated by pebble lenses. These sediments are indicative of a relatively high-energy depositional environment, and the distribution of these fossils over multiple beds indicates that they accumulated over multiple events, possibly flash floods. The fossils exhibit a range of surface weathering, having intact to heavily weathered cortices. The presence of definitive dinosaur material from near the Jurassic–Cretaceous boundary of Alberta establishes the oldest record of dinosaur body fossils in western Canada and provides a unique opportunity to study the Early Cretaceous dinosaur faunas of western North America.

Notes on Polychaeta from the East Coast of Vancouver Island and from Adjacent Waters, with a Description of a New Species of Aricidea

1956 ◽  
Vol 13 (4) ◽  
pp. 541-546 ◽  
Author(s):  
E. Berkeley ◽  
C. Berkeley
Keyword(s):  
New Species ◽  
North America ◽  
East Coast ◽  
Vancouver Island ◽  
Western Canada ◽  
Western North America ◽  
A New Species

Records are given of two species and a variety new to western Canada and notes on three other species already known from the region. A new species, Aricidea lopezi, and four species new to western North America, are described from the neighbourhood of Friday Harbour, Washington.

Oldest known Esox (Pisces: Esocidae), part of a new Paleocene teleost fauna from western Canada

1980 ◽  
Vol 17 (3) ◽  
pp. 307-312 ◽  
Author(s):  
Mark V. H. Wilson
Keyword(s):  
North America ◽  
Western Canada ◽  
Body Form

Paleocene freshwater teleostean fishes from the Paskapoo and Ravenscrag Formations of Alberta and Saskatchewan, dated as Tiffanian or about 62 Ma old, include pike (Esox) remains twice as old as any previously known. Esox tiemani sp. nov. is an elongate, narrow-snouted pike, indicating that this body form may be primitive for some Recent pike species, and casting doubt on hypotheses of geologically more recent dispersal of pike into North America from Eurasia.The pike remains occur in the Paskapoo Formation with a teleost fauna having Eocene affinities and including osteoglossids, hiodontids, gonorynchids, cyprinoids, percopsids, and asineopids, none of which has previously been recorded from the Paleocene of North America.

Additions to the Polychaete Fauna of Canada, with Comments on Some Older Records

1954 ◽  
Vol 11 (4) ◽  
pp. 454-471 ◽  
Author(s):  
E. Berkeley ◽  
C. Berkeley
Keyword(s):  
New Species ◽  
North America ◽  
Pacific Coast ◽  
Western Canada ◽  
New Genera ◽  
Eastern Canada ◽  
New Variety ◽  
The Pacific

Descriptions are given of the new genera Neopygospio (type N. laminifera, nov.) and Novobranchus (type N. pacificus, nov.); of the new species Nereis (Eunereis) wailesi, Spio butleri, Neopygospio laminifera, Novobranchus pacificus; and of the new variety pacificus of Distylia volutacornis (Montagu). All are from the Pacific coast of Canada. Synonymy is proposed of Lepidonotus caelorus Moore with L. squamatus (Linné), and of Goniada eximia Ehlers with Ophioglycera gigantea Verrill. In addition to the new species and variety, records of three species new to western Canada are presented, and notes on others. Thirteen species and a variety new to eastern Canada are recorded, one of them new to North America.

The Parasites of the Muskrat (Ondatra zibethica L.) in the British Isles

Parasitology ◽  
1936 ◽  
Vol 28 (3) ◽  
pp. 395-402 ◽  
Author(s):  
Tom Warwick
Keyword(s):  
North America ◽  
Rattus Norvegicus ◽  
Common Species ◽  
Helminth Fauna ◽  
Water Vole ◽  
British Isles ◽  
Local Fauna ◽  
Capillaria Hepatica ◽  
Arvicola Amphibius ◽  
Taenia Taeniaeformis

Of the five species of helminths of the British muskrat (Ondatra zibethica L.), two (Notocotylus quinqueserialis and Hymenolepis evaginata) have been introduced with the animal. The three other species of helminths (Capillaria hepatica, Taenia taeniaeformis larva and T. tenuicollis larva) have probably been largely re-acquired from the local fauna. All of the three common species of ectoparasites [Laelaps multispinosus (Tetragonyssus spiniger), Listrophorus validus and Dermacarus n.sp.] occur in North America. Three other species (Tyroglyphus sp., Myobia n.sp., Polyplax sp.) have occurred as single individuals, the last species having probably been acquired from the water vole. Introduction into Britain has greatly depleted the original helminth fauna as regards number of species and individuals; but not so with the ectoparasites. Lists of the parasites hitherto recorded from the muskrat are given and those found in brown rats (Rattus norvegicus Erx.) and water voles (Arvicola amphibius amphibius L.).

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