Blood Parasites of the Canada Goose, Branta canadensis interior

1953 ◽  
Vol 17 (2) ◽  
pp. 185 ◽  
Author(s):  
Norman D. Levine ◽  
Harold C. Hanson
Keyword(s):  
Branta Canadensis ◽  
Blood Parasites ◽  
Canada Goose ◽  
Branta Canadensis Interior

Measurements and weights of eggs of the Canada goose, Branta canadensis, analyzed and compared with those of other species

1978 ◽  
Vol 56 (4) ◽  
pp. 676-687 ◽  
Author(s):  
T. H. Manning
Keyword(s):  
Clutch Size ◽  
Egg Size ◽  
Branta Canadensis ◽  
Published Data ◽  
Canada Goose ◽  
True Density ◽  
Fresh Weight ◽  
Coefficients Of Variation ◽  
Branta Canadensis Interior ◽  
The Mean

The length and breadth of 334 eggs (82 clutches) of Branta canadensis interior were measured and 125 eggs (30 clutches) were weighed. Published and unpublished data for eggs of Branta canadensis maxima, hutchinsi, moffitti, and minima were also used and comparisons made with published data on 31 other species from seven ordersMeasurements of full clutches rather than of one egg per clutch proved advantageous. The means for length (L) and breadth (B) were 83.87 ± 0.366 mm and 56.60 ± 0.126 mm; those for the indices of volume (LB2), shape (100B/L), and density (100W/LB2), 268.98 ± 1.897 cm3, 67.34 ± 0.248, and 55.21 ± 0.190; that for weight (W), an estimated 1.5 days after the commencement of incubation, 150.02 ± 1.718. The clutch variances were significant and accounted for about half the total variance. The lightest egg weighed 68% of the heaviest and the coefficients of variation varied from 2.48 (breadth) to 7.17 (weight). The last eggs were significantly lighter and smaller than earlier eggs, owing to their lesser breadth. Correlations between egg size and clutch size were not constant. Correlations between length and breadth were generally positive, those between volume and shape generally negative. The mean true density of the eggs was estimated to be 1.085, the mean true volume 137.74 cm3, the mean fresh weight 150.95 g, and the mean of the factor k for the correction of the ellipsoidal volume, 0.9780. All differences between the five races for length, breadth, and volume were significant. Joint non-overlaps varied from 64 to 100%.

scholarly journals Draft Genome Sequences of Escherichia coli Strains FP2 and FP3, Isolated from the Canada Goose (Branta canadensis)

2018 ◽  
Vol 7 (9) ◽  
Author(s):  
Allison L. Denny ◽  
Susan E. Arruda
Keyword(s):  
Escherichia Coli ◽  
Draft Genome ◽  
Branta Canadensis ◽  
Canada Goose ◽  
Genome Sequences ◽  
Content Type

Draft genomes of two strains of Escherichia coli, FP2 and FP3, isolated from the feces of the Canada goose (Branta canadensis), were sequenced. Genome sizes were 5.26 Mb with a predicted G+C content of 50.54% (FP2) and 5.07 Mb with a predicted G+C content of 50.41% (FP3).

A study of Canada geese, Branta canadensis, nesting on islands in southeastern Alberta

1970 ◽  
Vol 48 (2) ◽  
pp. 235-240 ◽  
Author(s):  
Kees Vermeer
Keyword(s):  
Egg Laying ◽  
Water Levels ◽  
Branta Canadensis ◽  
Canada Goose ◽  
Canada Geese ◽  
Uniform Spacing ◽  
Incubation Periods

Canada goose clutches situated on islands in Dowling Lake and Lake Newell, Alberta, were checked from laying to hatching. Egg-laying intervals averaged 1.87 days and incubation periods 26.8 days. The distribution of nests showed a significant deviation from randomness in the direction of uniform spacing. Causes of extensive hatching failure at Dowling Lake were predation and desertion. Predation by coyotes was facilitated by low water levels. A preference for nesting on islands appears to be a mechanism to counteract mammalian predation.

The development and pathogenesis of Leucocytozoon simondi in Canada and domestic geese in Algonquin Park, Ontario

1976 ◽  
Vol 54 (5) ◽  
pp. 634-643 ◽  
Author(s):  
Sherwin S. Desser ◽  
Andrée K. Ryckman
Keyword(s):  
Red Blood Cells ◽  
Peripheral Blood ◽  
Blood Cells ◽  
Primary Infection ◽  
Clinical Signs ◽  
Peripheral Circulation ◽  
Branta Canadensis ◽  
Canada Geese ◽  
Severe Anemia ◽  
Branta Canadensis Interior

The development of Leucocytozoon simondi was studied in naturally and experimentally infected Branta canadensis maxima, Branta canadensis interior, and Anser domesticus. The number of mature round gametocytes in the peripheral blood of the Canada geese increased between days 9 and 15 post exposure (PE) and decreased rapidly thereafter. Mean peak parasitemias recorded on day 13 PE were (per 1000 red blood cells (RBC)): 8 gametocytes in B.c. maxima, 16 gametocytes in B.c. interior, and 17 gametocytes in A. domesticus. About 3 weeks PE, gametocytes disappeared from the peripheral circulation and were not observed again during the autumn, winter, and spring in birds kept in the laboratory.Haematocrit determinations in the Canada geese revealed a low fluctuating anemia during the primary infection which subsided by day 21 PE. A more severe anemia was recorded in A. domesticus with a mean low packed RBC value of about 18% on day 11 PE. Immature and mature hepatic schizonts were observed in the Canada and domestic geese between days 3 and 8 PE. Neither megaloschizonts nor elongate gametocytes were seen. Clinical signs, pathology, and mortality commonly associated with L. simondi infection in ducks were not observed. Hypotheses are advanced to explain reports of severe pathogenesis associated with L. simondi infections in Canada geese in other localities.

Isolation of Actinobacillus suis from a Canada Goose (Branta canadensis)

1987 ◽  
Vol 23 (3) ◽  
pp. 483-484 ◽  
Author(s):  
R. L Maddux ◽  
M. M. Chengappa ◽  
B. G. McLaughlin
Keyword(s):  
Branta Canadensis ◽  
Canada Goose ◽  
Actinobacillus Suis
Sign in / Sign up

Export Citation Format

Share Document