Distribution of the Parasitic Isopod Hemioniscus balani with Special Reference to the East Coast of North America

1968 ◽  
Vol 25 (6) ◽  
pp. 1161-1167 ◽  
Author(s):  
D. J. Crisp
Keyword(s):  
North America ◽  
Small Area ◽  
World Wide ◽  
East Coast ◽  
Wide Distribution ◽  
American Variety ◽  
North Wales ◽  
Cape Hatteras ◽  
Balanus Balanoides ◽  
Parasitic Isopod

Hemioniscus balani Spence Bate, a parasitic isopod with a world-wide distribution in temperate waters, was not found among intertidal populations of Balanus balanoides examined between 1959 and 1965 on the east coast of North America from Newfoundland to Cape Hatteras, except for a small area near Halifax, Nova Scotia.The North American variety of Balanus balanoides, when transplanted from Woods Hole to North Wales, was found to be much more susceptible than the European variety to parasitisation by H. balani.

An outer shelf shelly fauna from Cambrian Series 2 (Stage 4) of North Greenland (Laurentia)

2021 ◽  
Vol 95 (S83) ◽  
pp. 1-41
Author(s):  
John S. Peel
Keyword(s):  
New York ◽  
New Species ◽  
North America ◽  
World Wide ◽  
Wide Distribution ◽  
East Greenland ◽  
North East ◽  
Small Shelly Fossils ◽  
Stage 4 ◽  
North Greenland

AbstractAn assemblage of 50 species of small shelly fossils is described from Cambrian Series 2 (Stage 4) strata in North Greenland, the present day northernmost part of the paleocontinent of Laurentia. The fossils are derived from the basal member of the Aftenstjernesø Formation at Navarana Fjord, northern Lauge Koch Land, a condensed unit that accumulated in a sediment-starved outer ramp setting in the transarctic Franklinian Basin, on the Innuitian margin of Laurentia. Most other small shelly fossil assemblages of similar age and composition from North America are described from the Iapetan margin of Laurentia, from North-East Greenland south to Pennsylvania. Trilobites are uncommon, but include Serrodiscus. The Australian bradoriid Spinospitella is represented by a complete shield. Obolella crassa is the only common brachiopod. Hyoliths, including Cassitella, Conotheca, Neogloborilus, and Triplicatella, are abundant and diverse, but most are represented just by opercula. Sclerites interpreted as stem-group aculiferans (sachitids) are conspicuous, including Qaleruaqia, the oldest described paleoloricate, Ocruranus?, Inughuitoconus n. gen., and Hippopharangites. Helcionelloid mollusks are diverse, but not common; they are associated with numerous specimens of the bivalve Pojetaia runnegari. The fauna compares best with that of the upper Bastion Formation of North-East Greenland, the Forteau Formation of western Newfoundland, and the Browns Pond Formation of New York, but several taxa have a world-wide distribution. Many specimens are encrusted with crystals of authigenic albite. New species: Anabarella? navaranae, Stenotheca? higginsi, Figurina? polaris, Hippopharangites groenlandicus, Inughuitoconus borealis, and Ocruranus? kangerluk.UUID: http://zoobank.org/160a17b1-3166-4fcf-9849-a3cabd1e04a3

scholarly journals African Aphididae

1914 ◽  
Vol 4 (4) ◽  
pp. 313-337 ◽  
Author(s):  
Fred. V. Theobald
Keyword(s):  
North America ◽  
World Wide ◽  
Wide Distribution ◽  
African Continent ◽  
Eriosoma Lanigerum ◽  
European Species ◽  
Important Group ◽  
Nursery Stock ◽  
The Common ◽  
Trees And Shrubs

Our knowledge of the Aphididae of Africa is as yet very limited, this important group of insects having been but little studied, except in Europe and North America. At present only thirty-five species are recorded for the whole African continent, about the number one can collect in a single afternoon in one's own garden in England. It will be noticed that several common European species are recorded, and that they are as destructive in Africa as in Europe, such as the Common Cabbage Aphis (A. brassicae) and the Ribes and Lettuce Aphis (Rhopalosiphum lactucae). Several others occur which have a world-wide distribution, such as the Black Peach Aphis (Aphis persicae), and the Woolly Aphis (Eriosoma lanigerum), doubtless having been distributed on nursery stock, the former as ova and the latter as adults. Fuller has reported destroying and fumigating strawberry plants attacked by Aphis sent from Europe, and Lounsbury records the presence of Apple Aphis eggs on imported stock. Undoubtedly these insects are constantly being distributed from country to country with imported plants, trees and shrubs.

ON THE NEMATODE GENUS RHABDOCHONA RAILLIET, 1916 (NEMATODA: SPIRUROIDEA)

1951 ◽  
Vol 29 (1) ◽  
pp. 1-16 ◽  
Author(s):  
L. P. E. Choquette
Keyword(s):  
New Species ◽  
North America ◽  
Geographical Distribution ◽  
Fish Species ◽  
World Wide ◽  
Wide Distribution ◽  
Systematic Position ◽  
Nematode Genus ◽  
A New Species ◽  
Host List

The systematic position of the genus Rhabdochona Railliet, 1916 and its diagnosis is reviewed. The genus comprising 33 species has a world-wide distribution and has been found, with one exception, in fish. Species from fish in North America are discussed and R. cascadilla Wigdor, 1918 is redescribed; R. laurentiana Lyster, 1940 is considered to be identical with the latter. A new species, R. milleri, is described. A host list and the geographical distribution of the 33 species of Rhabdochona so far recorded are given.

Assemblages and biogeography of demersal fishes of the east coast of North America

1998 ◽  
Vol 55 (7) ◽  
pp. 1704-1738 ◽  
Author(s):  
Robin Mahon ◽  
Stephen K Brown ◽  
Kees CT Zwanenburg ◽  
D Bruce Atkinson ◽  
Kenneth R Buja ◽  
...  
Keyword(s):  
North America ◽  
East Coast ◽  
Fish Assemblages ◽  
Single Species ◽  
Distribution Patterns ◽  
Demersal Fish ◽  
Trawl Survey ◽  
Distribution Maps ◽  
Cape Hatteras ◽  
Management Approaches

This study describes and maps demersal fish assemblages for the east coast of North America from Cape Hatteras, North Carolina, to Cape Chidley, Labrador, evaluates evidence for interannual shifts in assemblage distribution, and examines the relationship of the assemblages to accepted biogeographical boundaries. Demersal trawl survey data collected from 1975 to 1994 were analyzed. Visual classification of distribution maps for the 108 most abundant demersal species revealed nine species groups, based on both geography and depth distribution. Eighteen assemblage groups were identified using principal components analysis (PCA) and mapped. Assemblage groups were also identified by cluster analysis. Fish assemblages identified by both methods were spatially coherent. Assemblage distribution patterns were not consistent with accepted biogeographical boundaries. The PCA explained only 56.3% of the variance in distribution of the species, indicating that the assemblages should be interpreted as indeterminate, potentially adaptable entities rather than as rigid ecological constructs. Assemblages were persistent in composition through time but appeared to shift in location. The apparent looseness of the assemblages and their persistence through time in spite of severe impacts from fishing suggest that single-species management approaches may not be entirely inappropriate for the major groundfish species in the study area.

scholarly journals Transcontinental Occurrence of Al and A2 Strains of Phytophthora Cinnamomi in Australia

1972 ◽  
Vol 25 (5) ◽  
pp. 1099 ◽  
Author(s):  
BH Pratt ◽  
WA Heather ◽  
CJ Shepherd
Keyword(s):  
North America ◽  
World Wide ◽  
Phytophthora Cinnamomi ◽  
Wide Distribution

The fungus Phytophthora cinnamomi Rands is regarded as heterothallic with compatible mating strains designated Al and A2 (Gallegly 1970). Although the fungus has a world-wide distribution the Al strain has been reported only from North America and Hawaii (Galindo and Zentmyer 1964; Haasis, Nelson, and Marx 1964).

The Identification and Study of Indian Shell Middens in Eastern North America: 1643–1861

1986 ◽  
Vol 6 (3) ◽  
pp. 227-243 ◽  
Author(s):  
Andrew L. Christenson
Keyword(s):  
Nineteenth Century ◽  
Civil War ◽  
North America ◽  
East Coast ◽  
Eastern North America ◽  
Shell Midden ◽  
Shell Middens ◽  
Work Done

Although the interest in shell middens in North America is often traced to reports of the discoveries in Danish kjoekkenmoeddings in the mid-nineteenth century, extensive shell midden studies were already occurring on the East Coast by that time. This article reviews selected examples of this early work done by geologists and naturalists, which served as a foundation for shell midden studies by archaeologists after the Civil War.

SEA LEVEL BUDGET ALONG THE EAST COAST OF NORTH AMERICA

2017 ◽  
Author(s):  
Allison Pease ◽  
◽  
James Davis
Keyword(s):  
North America ◽  
Sea Level ◽  
East Coast
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