First observations of tumor-like abnormalities (exophytic lesions) on Lake Michigan zooplankton

1999 ◽  
Vol 56 (10) ◽  
pp. 1711-1715 ◽  
Author(s):  
M Omair ◽  
Henry A Vanderploeg ◽  
David J Jude ◽  
Gary L Fahnenstiel
Keyword(s):  
North America ◽  
Lake Michigan ◽  
Calanoid Copepods ◽  
Daphnia Galeata ◽  
Common Cause ◽  
Depth Contour ◽  
Herbivorous Species ◽  
Limnocalanus Macrurus ◽  
Daphnia Galeata Mendotae ◽  
Animal Size

Tumor-like abnormalities (exophytic lesions) were found on a variety of planktonic calanoid copepods and cladocerans (Diaptomus spp., Epischura lacustris, Limnocalanus macrurus, Polyphemus pediculus, Diaphanosoma sp., and Daphnia galeata mendotae) collected from inshore (3-m depth contour) and offshore (100- to 110-m depth contours) stations of eastern Lake Michigan. The abnormalities, which were quite large relative to animal size and variable in shape, are documented in photographs. Abnormality incidences among species ranged between 0 and 72%. Predatory species of calanoids and cladocerans had higher incidences of tumors than herbivorous species. The abnormalities on some copepods were very similar to cysts described for calanoid copepods in Lago Maggiore, Italy, which like Lake Michigan is undergoing oligotrophication. The recent appearance of the lesions in Europe and North America may indicate an emerging global phenomenon that has a common cause.

Population Dynamics of Daphnia galeata mendotae as Modified by Chronic Cadmium Stress

1978 ◽  
Vol 35 (4) ◽  
pp. 461-469 ◽  
Author(s):  
J. S. Marshall
Keyword(s):  
Population Dynamics ◽  
Carrying Capacity ◽  
Brood Size ◽  
Lake Michigan ◽  
Cadmium Stress ◽  
Whole Body ◽  
Average Weight ◽  
Daphnia Galeata ◽  
Female Ratio ◽  
Daphnia Galeata Mendotae

Forty populations of Daphnia galeata mendotae were maintained for 22 wk (or until they became extinct) in a medium consisting of filtered Lake Michigan water to which Chlamydomonas reinhardi and different concentrations of a mixture of labelled (109Cd) plus stable CdCl2 were added 24 h before use. The medium was changed daily Monday through Fridays. Weekly determinations were made of total numbers, average individual dry weight, mean brood size, egg–female ratio, aborted eggs and embryos, and average whole-body 109Cd content. Chronic cadmium stress reduced the populations' average numbers and biomass, while it increased the populations' turnover rates, temporal variability, probability of extinction, and proportion of ovigerous females. For individuals there was increased prenatal mortality, reduced life expectancy, increased average weight, and increased brood size. Due to compensatory increases in the proportion of ovigerous females and mean brood size, the cadmium sensitivity of population attributes was considerably less than that of the most sensitive individual attribute, prenatal mortality. A linear relationship between population carrying capacity (relative mean numbers) and added cadmium concentration indicated that the effective concentration for a 50% reduction of carrying capacity (EC50) is 7.7 μg Cd/L and that for a 1% reduction (EC1) is 0.15 μg Cd/L. An increase of 0.15 μg Cd/L in Lake Michigan itself, barring synergistic interaction with other factors in the lake, would probably not have a detectable effect on the population dynamics of D. galeata mendotae. Key words: zooplankton dynamics, stress ecology, Daphnia galeata mendotae, cadmium, heavy metals, toxic substances, Laurentian Great Lakes

Dioxin-like toxic potency in Forster's tern eggs from Green Bay, Lake Michigan, North America

Chemosphere ◽  
1993 ◽  
Vol 26 (11) ◽  
pp. 2079-2084 ◽  
Author(s):  
D.E. Tillitt ◽  
T.J. Kubiak ◽  
G.T. Ankley ◽  
J.P. Giesy
Keyword(s):  
North America ◽  
Lake Michigan ◽  
Green Bay

Presence of Undeclared Peanut Protein in Chocolate Bars Imported from Europe

2003 ◽  
Vol 66 (10) ◽  
pp. 1932-1934 ◽  
Author(s):  
PETER VADAS ◽  
BORIS PERELMAN
Keyword(s):  
North America ◽  
North American ◽  
Western Europe ◽  
Peanut Protein ◽  
Common Cause ◽  
Low Concentrations ◽  
Peanut Allergens ◽  
Safety And Reliability ◽  
Fatal Anaphylaxis ◽  
Made In

Peanut allergens are both stable and potent and are capable of inducing anaphylactic reactions at low concentrations. Consequently, the consumption of peanuts remains the most common cause of food-induced anaphylactic death. Since accidental exposure to peanuts is a common cause of potentially fatal anaphylaxis in peanut-allergic individuals, we tested for the presence of peanut protein in chocolate bars produced in Europe and North America that did not list peanuts as an ingredient. Ninety-two chocolate bars, of which 32 were manufactured in North America and 60 were imported from Europe, were tested by the Veratox assay. None of the 32 North American chocolate products, including 19 with precautionary labeling, contained detectable peanut protein. In contrast, 30.8% of products from western Europe without precautionary labeling contained detectable levels of peanut protein. Sixty-two percent of products from eastern Europe without precautionary labeling contained detectable peanut protein at levels of up to 245 ppm. The absence of precautionary labeling and the absence of the declaration of “peanut” as an ingredient in chocolate bars made in eastern and central Europe were not found to guarantee that these products were actually free of contaminating peanut protein. In contrast, North American manufacturers have attained a consistent level of safety and reliability for peanut-allergic consumers.

scholarly journals Limnocalanus macrurus (Copepoda: Calanoida) retains a marine arctic lipid and life cycle strategy in Lake Michigan

1998 ◽  
Vol 20 (8) ◽  
pp. 1581-1597 ◽  
Author(s):  
Henry A. Vanderploeg ◽  
Joann F. Cavaletto ◽  
James R. Liebig ◽  
Wayne S. Gardner
Keyword(s):  
Life Cycle ◽  
Lake Michigan ◽  
Life Cycle Strategy ◽  
Limnocalanus Macrurus

Recent increases in the large glacial-relict calanoid Limnocalanus macrurus in Lake Michigan

2009 ◽  
Vol 35 (2) ◽  
pp. 285-292 ◽  
Author(s):  
Richard P. Barbiero ◽  
David B. Bunnell ◽  
David C. Rockwell ◽  
Marc L. Tuchman
Keyword(s):  
Lake Michigan ◽  
Glacial Relict ◽  
Limnocalanus Macrurus

Dieldrin reduces male production and sex ratio in Daphnia galeata mendotae

1999 ◽  
Vol 15 (1-2) ◽  
pp. 193-200 ◽  
Author(s):  
Christine M. Merritt ◽  
Laura Torrentera ◽  
Katherine M. Winter ◽  
Christopher K. Tornehl ◽  
Kristin Girvin ◽  
...  
Keyword(s):  
Sex Ratio ◽  
Male Production ◽  
Daphnia Galeata ◽  
Daphnia Galeata Mendotae

The epidemiology of Kawasaki disease: a global update

2015 ◽  
Vol 100 (11) ◽  
pp. 1084-1088 ◽  
Author(s):  
Surjit Singh ◽  
Pandiarajan Vignesh ◽  
David Burgner
Keyword(s):  
Public Health ◽  
Heart Disease ◽  
North America ◽  
Kawasaki Disease ◽  
Common Cause ◽  
China And India ◽  
Global Epidemiology ◽  
Acquired Heart Disease ◽  
Childhood Vasculitis ◽  
Rheumatic Heart

Kawasaki disease (KD) is a childhood vasculitis and the most frequent cause of paediatric acquired heart disease in North America, Europe and Japan. It is increasingly recognised in rapidly industrialising countries such as China and India where it may replace rheumatic heart disease as the most common cause of acquired heart disease in children. We review the current global epidemiology of KD and discuss some public health implications.

scholarly journals Limnocalanus macrurus(Copepoda: Calanoida) retains a marine arctic lipid and life cycle strategy in Lake Michigan

1998 ◽  
Vol 20 (10) ◽  
pp. 2029-2029 ◽  
Author(s):  
Henry A. Vanderploeg ◽  
Joann F. Cavaletto ◽  
James R. Liebig ◽  
Wayne S. Gardner
Keyword(s):  
Life Cycle ◽  
Lake Michigan ◽  
Life Cycle Strategy ◽  
Limnocalanus Macrurus

Friends of Ireland: early O’Connellism in Lower Canada

2016 ◽  
Vol 40 (157) ◽  
pp. 43-65
Author(s):  
Shane Lynn
Keyword(s):  
United States ◽  
North America ◽  
The United States ◽  
Common Cause ◽  
Lower Canada ◽  
British North America ◽  
Reciprocal Interactions ◽  
Irish America ◽  
French Speaking ◽  
British North American

AbstractIn September 1828, societies of the ‘Friends of Ireland’ were founded throughout the United States and British North America for the purpose of raising funds and disseminating propaganda in support of the O’Connellite campaign for Catholic emancipation. In March 1831, the societies were briefly revived to agitate for repeal of the Union. The first Irish diasporic social movement to appear in Britain’s overseas empire, the British North American Friends of Ireland enjoyed greatest support in French-speaking Lower Canada, where for a time sympathetic local patriotes perceived a common cause with their new Irish neighbours. This article explores the transatlantic reciprocal interactions, cross-ethnic alliances and regional distinctions which characterised early O’Connellism in Lower Canada. It follows its initial successes to its virtual collapse in the early 1830s, as an increasingly polarised Lower Canada slid towards rebellion. Comparisons are employed with similar agitation elsewhere in British North America, in the United States, and in Ireland. It is argued that instrumentalist explanations for Irish diasporic nationalism, typically drawn from studies of post-famine Irish-America, do not convincingly account for the appearance and form of O’Connellite nationalism in British North America.

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