A Survey of the Parasites of Freshwater Fishes from the Mainland of British Columbia

1954 ◽  
Vol 11 (6) ◽  
pp. 673-708 ◽  
Author(s):  
Ralph V. Bangham ◽  
James R. Adams

Examination of 5,456 fish of 36 different species during 1951 and 1952 showed 4,925 or 90 per cent to be infected with at least one species of parasite. Records include fish from many lakes and streams of the Columbia and Fraser drainages and from a few localities in the Skeena, Peace, Liard and Skagit drainages. Parasites are recorded for each species of fish from each locality. The incidence of parasitism in the fish was comparable with that found by other surveys in eastern Canada and the United States. No major differences were found in the parasite faunas of the different river systems. Most of the common parasites were forms of circumpolar or general North American distribution. Several species of parasites described only from the Pacific coast area were common in certain hosts. Introduced species of fish showed very light infections with but few species of their normal parasites. The parasite fauna of fishes of this area appears to be less varied than in eastern and southern parts of the continent.

2021 ◽  
Vol 33 (2) ◽  
pp. 382-411
Author(s):  
Chris Madsen

Henry Eccles, in classic studies on logistics, describes the dynamics of strategic procurement in the supply chain stretching from home countries to military theatres of operations. Naval authorities and industrialists concerned with Japanese aggression before and after Pearl Harbor looked towards developing shipbuilding capacity on North America’s Pacific Coast. The region turned into a volume producer of merchant vessels, warships and auxiliaries destined for service in the Pacific and Indian Oceans. Shipbuilding involved four broad categories of companies in the United States and Canada that enabled the tremendous production effort.


Author(s):  
John Rowe

Among the immigrant groups which made a considerable contribution to the development of the United States and of the American way of life the Cornish people must be reckoned. Older accounts of the mining, camps of the Pacific Coast actually enumerate the “Cornish nationality” among the races that thronged to the gold and silver diggings. Yet, throughout the nineteenth century, British, census returns reveal that there were rarely more than a third of a million Cornish folk in the “old country”, and after 1861 their numbers declined. Yet this people impressed themselves upon the American scene, even on some of its most superficial observers, and this for a variety of reasons, apart from the local provincialisms created by geographic remoteness and physical difficulties of communication in the homeland until well into the “railway age”.


2010 ◽  
Vol 17 (11) ◽  
pp. 1729-1733 ◽  
Author(s):  
Harry E. Prince ◽  
Mary Lapé-Nixon ◽  
Hemlata Patel ◽  
Cindy Yeh

ABSTRACT All reported cases of WA1 babesiosis have occurred in the Pacific coast region of the United States, suggesting that WA1 is limited to this geographic area. However, we detected WA1 IgG in 27% of clinical sera sent to our laboratory for WA1 IgG testing from across the United States over a 2-year period, suggesting that exposure to WA1 or a closely related organism occurs outside Pacific coast states. We sought to determine if this high WA1 IgG detection rate among clinical specimens merely reflects WA1 seroprevalence outside the Pacific region. WA1 IgG, as well as Babesia microti IgG, was measured in 900 blood donor specimens from 9 states. Overall seroprevalence was 2.0% for WA1 and 0.4% for B. microti; regional seroprevalences ranged from 0 to 4% and 0 to 2%, respectively. Additional studies were performed to determine if WA1 IgG reactivity was attributable to polyclonal B-cell activation associated with acute Epstein-Barr virus (EBV) infection; 40 WA1 IgG-positive clinical sera and the 18 WA1 IgG-positive blood donor specimens were all negative for EBV capsid antigen (EBVCA) IgM (a marker of acute EBV infection), and 40 EBVCA IgM-positive sera were all negative for WA1 IgG. These findings indicate that the high WA1 IgG detection rate among clinical specimens does not simply reflect the national WA1 seroprevalence among blood donors or nonspecific reactivity due to acute EBV infection. Rather, the findings suggest that infection with WA1 or a related organism is more common than indicated by the literature and is not limited to Pacific coast states.


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