Host and geographic distribution of Skrjabinoclava spp. (Nematoda: Acuarioidea) in Nearctic shorebirds (Aves: Charadriiformes), and evidence for transmission in marine habitats in staging and wintering areas

1990 ◽  
Vol 68 (12) ◽  
pp. 2539-2552 ◽  
Author(s):  
P. L. Wong ◽  
R. C. Anderson
Keyword(s):  
Gulf Of Mexico ◽  
Pacific Coast ◽  
The United States ◽  
Larval Stages ◽  
Marine Habitats ◽  
The Pacific ◽  
Southern Alberta ◽  
Wintering Areas ◽  
Charadrius Wilsonia ◽  
Charadrius Semipalmatus

Twelve species of shorebirds belonging to the families Charadriidae (N = 3) and Scolopacidae (N = 9) were infected with 11 species of Skrjabinoclava and there was little overlap of parasites between these two families of birds. Most Skrjabinoclava spp. are transmitted apparently in marine staging and (or) wintering areas of their hosts, as indicated by the presence of larval stages of six species. There was no evidence that transmission occurs on the breeding grounds in freshwater habitats. Skrjabinoclava tupacincai, found predominantly in sanderlings (Calidris alba (Pallas)), is transmitted on the Pacific (Washington, California, Chile) and Atlantic coasts (New Jersey) in winter and the Gulf of Mexico (Florida and Texas) in winter and spring. Skrjabinoclava myersi was found, with a single exception, only in sanderlings, and transmission is apparently restricted to coastal Washington and California in winter. Skrjabinoclava bakeri, found predominantly in western sandpipers (Calidris mauri Cabanis), is transmitted on the Pacific coast (California) and in the Gulf of Mexico in winter. Skrjabinoclava morrisoni and Skrjabinoclava pusillae were found mainly in semipalmated sandpipers (Calidrispusilla (L.)). Both parasites are transmitted in the Gulf of Mexico in spring, but S. morrisoni is also transmitted in the Bay of Fundy in fall. Skrjabinoclava inornatae, found mainly in willets (Catoptrophorus semipalmatus (Gmelin)), is transmitted in Louisiana, Texas, and Peru in winter. Skrjabinoclava kritscheri was found only in marbled godwits (Limosafedoa (L.)), and it is suggested that infected birds collected in southern Alberta in spring acquired their infections while wintering along the Pacific coast of the United States. Skrjabinoclava hartwichi, found in black turnstones (Arenaria melanocephala (Vigors)) wintering in California and ruddy turnstones (Arenaria interpres (L.)) wintering in Peru, is transmitted along the Pacific coast of North America. Skrjabinoclava semipalmatae was found in semipalmated plovers (Charadrius semipalmatus Bonaparte) wintering in California. Skrjabinoclava wilsoniae was found in Wilson's plover (Charadrius wilsonia Ord) wintering in Texas and in a black-bellied plover (Pluvialis squatarola (L.)) migrating through southern Alberta in spring. Skrjabinoclava bartlettae was found in black-bellied plovers collected in southern Alberta in spring and Louisiana in winter.

War stimulus: The Japanese threat and rebirth of the North America Pacific Coast shipbuilding industry, 1937-1946

2021 ◽  
Vol 33 (2) ◽  
pp. 382-411
Author(s):  
Chris Madsen
Keyword(s):  
United States ◽  
Supply Chain ◽  
Pacific Coast ◽  
The United States ◽  
Pearl Harbor ◽  
Shipbuilding Industry ◽  
The North ◽  
The Pacific ◽  
Before And After ◽  
Strategic Procurement

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.

scholarly journals Molecular data reshape our understanding of the life cycles of three digeneans (Monorchiidae and Gymnophallidae) infecting the bivalve, Donax variabilis: it’s just a facultative host!

Parasite ◽  
2021 ◽  
Vol 28 ◽  
pp. 34
Author(s):  
Kristina M. Hill-Spanik ◽  
Claudia Sams ◽  
Vincent A. Connors ◽  
Tessa Bricker ◽  
Isaure de Buron
Keyword(s):  
Gulf Of Mexico ◽  
Intermediate Host ◽  
Atlantic Coast ◽  
The United States ◽  
Life Cycles ◽  
Intermediate Hosts ◽  
Larval Stages ◽  
Complete Life Cycle ◽  
Morphological Criteria ◽  
Donax Variabilis

The coquina, Donax variabilis, is a known intermediate host of monorchiid and gymnophallid digeneans. Limited morphological criteria for the host and the digeneans’ larval stages have caused confusion in records. Herein, identities of coquinas from the United States (US) Atlantic coast were verified molecularly. We demonstrate that the current GenBank sequences for D. variabilis are erroneous, with the US sequence referring to D. fossor. Two cercariae and three metacercariae previously described in the Gulf of Mexico and one new cercaria were identified morphologically and molecularly, with only metacercariae occurring in both hosts. On the Southeast Atlantic coast, D. variabilis’ role is limited to being a facultative second intermediate host, and D. fossor, an older species, acts as both first and second intermediate hosts. Sequencing demonstrated 100% similarities between larval stages for each of the three digeneans. Sporocysts, single tail cercariae, and metacercariae in the incurrent siphon had sequences identical to those of monorchiid Lasiotocus trachinoti, for which we provide the complete life cycle. Adults are not known for the other two digeneans, and sequences from their larval stages were not identical to any in GenBank. Large sporocysts, cercariae (Cercaria choanura), and metacercariae in the coquinas’ foot were identified as Lasiotocus choanura (Hopkins, 1958) n. comb. Small sporocysts, furcocercous cercariae, and metacercariae in the mantle were identified as gymnophallid Parvatrema cf. donacis. We clarify records wherein authors recognized the three digenean species but confused their life stages, and probably the hosts, as D. variabilis is sympatric with cryptic D. texasianus in the Gulf of Mexico.

scholarly journals Traces and Representations of the U.S.-Mexico Frontera

2018 ◽  
Vol 87 (1) ◽  
pp. 150-172
Author(s):  
Katherine G. Morrissey
Keyword(s):  
Pacific Coast ◽  
Mexican Revolution ◽  
Presidential Address ◽  
The United States ◽  
Border Region ◽  
The Other ◽  
The Pacific ◽  
History Of ◽  
The U.S ◽  
Visual History

The following was the author’s presidential address at the annual meeting of the Pacific Coast Branch, American Historical Association, in Northridge, California, on August 4, 2017. The twentieth-century visual history of the U.S.-Mexico borderlands, la frontera, offers a rich set of representations of the shared border environments. Photographs, distributed in the United States and in Mexico, allow us to trace emerging ideas about the border region and the politicized borderline. This essay explores two border visualization projects—one centered on the Mexican Revolution and the visual vocabulary of the Mexican nation and the other on the repeat photography of plant ecologists—that illustrate the simultaneous instability and power of borders.

Annual Meeting of the (American) African Studies Association

1969 ◽  
Vol 7 (2) ◽  
pp. 319-322
Author(s):  
Helen Kitchen
Keyword(s):  
New York ◽  
Annual Meeting ◽  
Pacific Coast ◽  
The United States ◽  
African Studies ◽  
North East ◽  
The North ◽  
The Pacific ◽  
Middle West ◽  
The University

The membership of the African Studies Association now numbers 1,731— 734 fellows, 618 associates, and 379 student associates. Some 700 of these participated in the eleventh annual meeting of the Association. Although attendance was considerably below the 1,300 registered at the New York Hilton in 1967 and the nearly 1,000 who made their way to the University of Indiana in 1966, there is no indication that this reflects a declining interest in African studies in the United States. Rather, the A.S.A. custom of bringing its annual meetings in turn to scholars in the north-east, on the Pacific coast, and in the Middle West results in predictable fluctations in registration.

Constitutional Law in 1959–1960

1961 ◽  
Vol 55 (1) ◽  
pp. 112-135
Author(s):  
David Fellman
Keyword(s):  
United States ◽  
Gulf Of Mexico ◽  
Supreme Court ◽  
The United States ◽  
Point Of View ◽  
Important Place ◽  
The Public ◽  
The Pacific ◽  
The Supreme Court ◽  
The Pacific Ocean

The personnel of the Supreme Court remained unchanged during the 1959 Term. From the point of view of the decisions rendered in the public law field, this was an undistinguished Term. Few of the constitutional cases are likely to hold an important place among the precedents, and a considerable number of well-argued decisions turned entirely upon private law questions. But there was no dearth of writing, during the period under review, about the Court as an institution and about the Justices who sit there.Note may be made at this point of the latest chapter in the long dispute over the so-called tidelands. In 1947 the Supreme Court had ruled that, as against the claims of California, the United States possessed paramount rights in lands underlying the Pacific Ocean seaward from the low-water mark. Similar rulings were made in 1950 as regards the claims of Louisiana and Texas in the Gulf of Mexico. But with the enactment in 1953 of the Submerged Lands Act, the United States relinquished to the coastal states all of its rights in all lands beneath navigable waters within the three-mile limit, and in excess of that limit within state boundaries as they existed at the time a state became a member of the Union, or as theretofore approved by Congress. The limit of the grant was three leagues (about ten and one-half miles) in the Gulf of Mexico and three geographical miles in the Atlantic and Pacific. The actual extent of the claims of the coastal states involved in the question was therefore left to be settled by litigation.

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