Two species of Myxobilatus (Myxosporida: Myxobilatidae) from freshwater fishes of western Canada, with description of M. yukonensis sp. nov.

1975 ◽  
Vol 53 (11) ◽  
pp. 1663-1668 ◽  
Author(s):  
J. R. Arthur ◽  
L. Margolis
Keyword(s):  
British Columbia ◽  
Urinary Bladder ◽  
Gasterosteus Aculeatus ◽  
Freshwater Fishes ◽  
Vancouver Island ◽  
Yukon Territory ◽  
Western Canada ◽  
Kidney Tubules ◽  
Cottus Cognatus

Myxobilatus yukonensis sp. nov. and Myxobilatus gasterostei (Parisi, 1912) sensu S. Shulman, 1953, are described and figured from the kidney tubules and urinary bladder of Cottus cognatus Richardson from Aishihik Lake, Yukon Territory, and Gasterosteus aculeatus Linn. from Vancouver Island, British Columbia, respectively.

The biology of Canadian weeds. 128. Leucanthemum vulgare Lam.

2004 ◽  
Vol 84 (1) ◽  
pp. 343-363 ◽  
Author(s):  
David R. Clements ◽  
Dan E. Cole ◽  
Jane King ◽  
Alec McClay
Keyword(s):  
British Columbia ◽  
North America ◽  
Yukon Territory ◽  
Perennial Herb ◽  
Old Fields ◽  
Western Canada ◽  
Far North ◽  
Pasture Quality ◽  
Ray Florets ◽  
Noxious Weed

Leucanthemum vulgare Lam. (Asteraceae), known as ox-eye daisy, is a familiar perennial herb with white ray florets and yellow disc florets. It commonly inhabits roadside ver ges, pastures and old fields from Newfoundland to British Columbia, and also as far north as the Yukon Territory. Introduced from Europe, L. vulgare was well established in North America by 1800. The Canadian distribution of L. vulgare has expanded in many areas recently, particularly in western Canada. It can form dense populations that may reduce diversity of natural vegetation or pasture quality, and also serves as a host and reservoir for several species of polyphagous gall-forming Meloidogyne nematodes that feed on crops. It is considered a noxious weed under provincial legislation in Quebec, Manitoba, Alberta and British Columbia, as well as under the Canada Seeds Act. Control efforts are sometimes complicated by difficulties in distinguishing ox-eye daisy from some forms of the commercially available Shasta daisy ( L. × superbum).

Chlorophyll–Phosphorus Relationships for Subarctic Lakes in Western Canada

1987 ◽  
Vol 44 (4) ◽  
pp. 775-781 ◽  
Author(s):  
M. L. Ostrofsky ◽  
F. H. Rigler
Keyword(s):  
British Columbia ◽  
Chlorophyll A ◽  
Total Phosphorus ◽  
Chlorophyll Concentration ◽  
Yukon Territory ◽  
Western Canada ◽  
Subarctic Lakes ◽  
Empirical Relationships ◽  
Chl A ◽  
The Relationship

Concentrations of total phosphorus and chlorophyll a were measured weekly in 49 lakes in the vicinity of Yellowknife, N.W.T., Canada, from May to September 1977. The relationship between [TPspr] and [Chl asu] was significantly different from the Dillon–Rigler model, but similar to relationships developed for lakes in Alberta, British Columbia, and the Yukon Territory. Empirical relationships were developed between [TPspr] and maximum chlorophyll a concentrations and the probability of exceeding critical concentrations of chlorophyll a. These models may be potentially more useful than models which predict only a mean summer chlorophyll concentration.

Review of the Ocalea group of genera (Coleoptera, Staphylinidae, Aleocharinae) in Canada and Alaska: new taxa, bionomics, and distribution

2004 ◽  
Vol 136 (4) ◽  
pp. 443-500 ◽  
Author(s):  
Jan Klimaszewski ◽  
Georges Pelletier
Keyword(s):  
United States ◽  
British Columbia ◽  
Type Species ◽  
First Record ◽  
Yukon Territory ◽  
Western Canada ◽  
Nominal Species ◽  
Mixed Species ◽  
Nomen Novum ◽  
Nearctic Region

AbstractA review of the Nearctic genera and Canadian and Alaskan species of the Ocalea group is presented. Ten genera are treated, with five erected as new: Alfocalea Klimaszewski gen. nov. (type species: A. montana Klimaszewski sp. nov.), Betocalea Klimaszewski gen. nov. (type species: B. pacifica Klimaszewski sp. nov.), Gennadota Casey (reinstated), Longipeltina Bernhauer, Megocalea Klimaszewski gen. nov. (type species: M. lemieuxi Klimaszewski sp. nov.), Metocalea Klimaszewski gen. nov. (type species: M. lindgreni Klimaszewski sp. nov.), Neoisoglossa (Casey) (nomen novum), Neothetalia Klimaszewski gen. nov. (type species: N. nimia (Casey)), Ocalea Erichson (restricted definition), and Parocalea Bernhauer. Twenty-four species of the Ocalea group are here recognized in the Nearctic region, fourteen of which occur in Canada. Six new species are described from western Canada and Alaska: Neothetalia smetanai Klimaszewski sp. nov. (Canada: British Columbia), Neothetalia canadiana Klimaszewski sp. nov. (Canada: British Columbia, Yukon Territory; United States: Alaska), Betocalea pacifica (Canada: British Columbia), Alfocalea montana (Canada: Alberta, British Columbia), Metocalea lindgreni (Canada: British Columbia), and Megocalea lemieuxi (Canada: British Columbia). The first record of Neoisoglossa agnita (Casey) in Alberta is provided. Two nominal species, Atheta (Athetalia) bicarniceps Casey (= Neoisoglossa) and Isoglossa grandicollis (Casey) (= Neoisoglossa), are here synonymized with Neoisoglossa arcuata (Casey). Aleochara pallitarsis Kirby has been transferred to the genus Neothetalia and is newly recorded from Alaska and British Columbia. Ocalea columbiana Klimaszewski has been transferred to Neothetalia and is newly recorded from Alaska. Neothetalia pallitarsis was formerly recorded from an unknown locality in North America and Neothetalia columbiana from the Carmanah Valley on Vancouver Island. Neothetalia nimia is newly recorded from Alaska. A new generic classification is proposed to accommodate species of the Nearctic Ocalea group. New data are provided on the systematics, relationships, bionomics, and distribution of the Nearctic species and genera of America north of Mexico. Diagnoses, colour images of entire bodies, and line illustrations of genital features are provided for those Canadian and Alaskan species that were not formerly illustrated, and their collection localities are plotted on maps. A key to Nearctic genera of the Ocalea group and the species occurring in Canada and Alaska is presented. The lectotypes have been designated for the following nominal species because the original series consisted of syntypes or represented mixed species or both sexes but with males bearing a better diagnostic set of characters: Aleochara picata Stephens (= Ocalea), Atheta (Athetalia) bicarniceps, Atheta (Athetalia) nimia Casey (= Neothetalia), Atheta (Athetalia) repensa Casey (= Neoisoglossa), Isoglossa arcuata Casey (= Neoisoglossa), Ocalea agnita Casey (= Neoisoglossa), Ocalea franciscana Casey (= Neoisoglossa), Ocalea fusca Fenyes (= Neoisoglossa), Ocalea grandicollis Casey (= Neoisoglossa), Pyroglossa grossa Bernhauer, Rheobioma disjuncta Casey (= Neoisoglossa), Rheobioma marcida Casey (= Neoisoglossa), and Rheobioma terrena Casey (= Neoisoglossa).

Distribution of the species of the genus Oxyloma (Mollusca, Succineidae) in southern Canada and the adjacent portions of the United States

1982 ◽  
Vol 60 (7) ◽  
pp. 1607-1611 ◽  
Author(s):  
Stuart A. Harris ◽  
Leslie Hubricht
Keyword(s):  
United States ◽  
British Columbia ◽  
The United States ◽  
Common Species ◽  
Yukon Territory ◽  
Western Canada ◽  
Northern Ontario ◽  
Continental Divide ◽  
Southern Alberta ◽  
The Common

Extensive collecting and dissecting of live material shows that eight species of Oxyloma occur in southern and western Canada. Oxyloma haydeni is the common species across the Prairies from northern Ontario to southern Alberta. Oxyloma kanabensis occurs west of Edmonton, east of the Continental Divide and north of Sundre, while O. nuttalliana occurs west of the Continental Divide in southern British Columbia. Oxyloma groenlandica is found in the Yukon Territory and in the intermontane valleys in interior British Columbia. Oxyloma hawkinsi occurs sparsely, centred in the Okanagan area, but also persists as a probable remnant of the Hypsithermal interval at Exshaw, Alberta. Oxyloma retusa and O. gouldi are confined to the southern portions of Ontario and Quebec.A new species, Oxyloma missoula, occurs in and adjacent to the areas occupied by the former Pluvial Lake Bonneville and Glacial Lake Missoula. All the species could have survived from before the last Wisconsinan ice advance since their distributions straddle the boundary of the glaciated area.

New distribution records for 48 species of Polyporaceae in western Canada

1971 ◽  
Vol 49 (6) ◽  
pp. 899-902
Author(s):  
James H. Ginns ◽  
Ruth Macrae
Keyword(s):  
British Columbia ◽  
Northwest Territories ◽  
Yukon Territory ◽  
Western Canada ◽  
Number Of Species ◽  
First Time ◽  
New Distribution

Forty-eight species of Polyporaceae are reported for the first time from the four western Provinces and Yukon and District of Mackenzie of the Northwest Territories. The number of species reported are from Manitoba 11, Saskatchewan 8, Alberta 20, British Columbia 10, Yukon Territory 4, and Northwest Territories (Mackenzie Dist.) 13.

scholarly journals First Records of the Yellow Bullhead, Ameiurus natalis, a Loricariid Catfish, Panaque suttonorum, and a Silver Pacu, Piaractus cf. P. brachypomus, in British Columbia

2006 ◽  
Vol 120 (4) ◽  
pp. 421
Author(s):  
G. F. Hanke ◽  
M. C. E. McNall ◽  
J. Roberts
Keyword(s):  
British Columbia ◽  
Micropterus Salmoides ◽  
First Record ◽  
Vancouver Island ◽  
Western Canada ◽  
Black Bullhead ◽  
Green Lake ◽  
Ameiurus Nebulosus ◽  
Continental Divide ◽  
Ameiurus Melas

In Canada, there are no native catfish west of the continental divide and until recently, the list of extant exotic catfishes in British Columbia only included introduced Black Bullhead (Ameiurus melas) and Brown Bullhead (Ameiurus nebulosus). We report that a single Yellow Bullhead (Ameiurus natalis) was collected from Silvermere Lake in the Lower Fraser River drainage. This represents the first record of the Yellow Bullhead in western Canada, and its introduction likely was accidental with a shipment of Largemouth Bass (Micropterus salmoides) rather than dispersal from Washington. Warm, eutrophic, weedy habitat in the Fraser Delta provides ample habitat for Yellow Bullheads and other exotic fishes. A Blue-eyed Panaque (Panaque suttonorum), a loricariid catfish found in 1995 in Shawnigan Lake, Vancouver Island, probably represents a single, illegally released aquarium fish, as does a large Silver Pacu (Piaractus cf. P. brachypomus), which was found in Green Lake on Vancouver Island in 2004.

Distribution of Cryptobia salmositica, a haemoflagellate of fishes, in British Columbia and the seasonal pattern of infection in a coastal river

1984 ◽  
Vol 62 (12) ◽  
pp. 2512-2518 ◽  
Author(s):  
Susan M. Bower ◽  
L. Margolis
Keyword(s):  
British Columbia ◽  
Seasonal Pattern ◽  
Cutthroat Trout ◽  
Late Summer ◽  
Host Record ◽  
Vancouver Island ◽  
Yukon Territory ◽  
Intensity Of Infection ◽  
New Host ◽  
Coastal River

A survey of adult Pacific salmon (Oncorhynchus spp.) from 1981 to 1983, along with other observations, demonstrated that in British Columbia Cryptobia salmositica was confined to tributaries of the Fraser River, coastal rivers adjacent to this river, and rivers on Vancouver Island. Adult salmon from the Queen Charlotte Islands and the Bella Coola, Skeena, and Nass rivers in British Columbia and the Yukon River in the Yukon Territory were not infected. The distribution of C. salmositica may be explained by events of the Wisconsin glacial and postglacial periods. Seasonal variability in prevalence and intensity of infection of C. salmositica in the Big Qualicum River, a coastal river on Vancouver Island, is related to the seasonal return of adult salmon in late summer and autumn, and the concomitant increase in abundance of the leech vector, Piscicola salmositica. Prevalence and intensity of infection in juvenile salmonids in this river also increased during autumn. Cryptobia salmositica was present in resident sculpins (Cottus aleuticus) throughout the year; however, the prevalence did not begin to increase until December, coincident with the postspawning decline in salmon numbers in the river. The finding of C. salmositica in cutthroat trout (Salmo clarki) from the Big Qualicum River constitutes a new host record.

The plainfin midshipman’s soundscape at two sites around Vancouver Island, British Columbia

2018 ◽  
Vol 603 ◽  
pp. 189-200 ◽  
Author(s):  
WD Halliday ◽  
MK Pine ◽  
APH Bose ◽  
S Balshine ◽  
F Juanes
Keyword(s):  
British Columbia ◽  
Vancouver Island
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