Influence of migrant tundra swans (Cygnus columbianus) and Canada geese (Branta canadensis) on aquatic vegetation at Long Point, Lake Erie, Ontario

2010 ◽  
pp. 195-211
Author(s):  
Shannon S. Badzinski ◽  
C. Davison Ankney ◽  
Scott A. Petrie
Keyword(s):  
Lake Erie ◽  
Aquatic Vegetation ◽  
Branta Canadensis ◽  
Canada Geese ◽  
Cygnus Columbianus

Influence of migrant tundra swans (Cygnus columbianus) and Canada geese (Branta canadensis) on aquatic vegetation at Long Point, Lake Erie, Ontario

Hydrobiologia ◽  
2006 ◽  
Vol 567 (1) ◽  
pp. 195-211 ◽  
Author(s):  
Shannon S. Badzinski ◽  
C. Davison Ankney ◽  
Scott A. Petrie
Keyword(s):  
Lake Erie ◽  
Aquatic Vegetation ◽  
Branta Canadensis ◽  
Canada Geese ◽  
Cygnus Columbianus

scholarly journals Microbial impact of Canada geese (Branta canadensis) and whistling swans (Cygnus columbianus columbianus) on aquatic ecosystems.

1979 ◽  
Vol 37 (1) ◽  
pp. 14-20 ◽  
Author(s):  
D Hussong ◽  
J M Damaré ◽  
R J Limpert ◽  
W J Sladen ◽  
R M Weiner ◽  
...  
Keyword(s):  
Aquatic Ecosystems ◽  
Branta Canadensis ◽  
Canada Geese ◽  
Cygnus Columbianus

Coccidia of Canada geese(Branta canadensis) at Kortright Waterfowl Park, Guelph, Ontario, Canada, with description of Isospora anseris n.sp.

1981 ◽  
Vol 59 (3) ◽  
pp. 493-497 ◽  
Author(s):  
Robert C. Skene ◽  
O. Remmler ◽  
M. A. Fernando
Keyword(s):  
New Species ◽  
Branta Canadensis ◽  
Canada Geese ◽  
Fecal Samples ◽  
A New Species

A survey of adult Canada geese, Branta canadensis, at Kortright Waterfowl Park in Guelph, Ontario, Canada, showed that 20% of the geese sampled passed small numbers of coccidial oocysts throughout the winter months (October 1975 to February 1976). Four species of coccidia, Eimeria hermani Farr, 1953, E. magnalabia Levine, 1951, E. truncata (Raillet and Lucet, 1891) Wasielewski, 1904, and Tyzzeria parvula (Kotlan, 1933) Klimes, 1963, were identified from the samples examined. A hitherto undescribed Isospora sp. was found in 5% of the fecal samples. It is named Isospora anseris and described as a new species. In the spring goslings were found to be passing E. hermani oocysts between the 8th and 13th day of hatching.

The impact of nutrient loading from Canada Geese (Branta canadensis) on water quality, a mesocosm approach

Hydrobiologia ◽  
2007 ◽  
Vol 586 (1) ◽  
pp. 393-401 ◽  
Author(s):  
Robert L. Unckless ◽  
Joseph C. Makarewicz
Keyword(s):  
Water Quality ◽  
Nutrient Loading ◽  
Branta Canadensis ◽  
Canada Geese ◽  
The Impact

An Analysis of Function in the Formation Flight of Canada Geese

The Auk ◽  
1988 ◽  
Vol 105 (4) ◽  
pp. 749-755 ◽  
Author(s):  
John P. Badgerow
Keyword(s):  
Energy Savings ◽  
Direct Method ◽  
Formation Flight ◽  
Branta Canadensis ◽  
Canada Geese ◽  
Complex Behavior ◽  
Visual Contact ◽  
Multiple Hypotheses ◽  
Optimal Function ◽  
Analysis Of Function

Abstract I analyzed formations of Canada Geese (Branta canadensis) with a single, direct method of testing predictions from multiple hypotheses. The results support both energetic (aerodynamic) advantage and orientation communication through visual contact as functions of this complex behavior. Comparison of observed positioning patterns with criteria for optimal function suggests priority may be given to the maximization of energy savings within limits imposed by environmental and other constraints.

scholarly journals Distribution and use of brood-rearing and moulting sites of the Atlantic population of Canada Geese (Branta canadensis) in Nunavik, Quebec

2015 ◽  
Vol 129 (3) ◽  
pp. 229
Author(s):  
Richard C. Cotter
Keyword(s):  
Branta Canadensis ◽  
Hudson Bay ◽  
Canada Geese ◽  
Nesting Ecology ◽  
Brood Rearing ◽  
Atlantic Population ◽  
The Mean ◽  
Shallow Bay ◽  
Over Time ◽  
Coastal Lowlands

The Atlantic population of Canada Geese (Branta canadensis) nests in the coastal lowlands of eastern Hudson Bay and southwestern Ungava Bay in Nunavik, Quebec. Although many aspects of the nesting ecology of this and other northern populations of Canada Geese have been studied and published, there is a paucity of information on the use of brood-rearing and moulting sites. Based on 18 years of band and recapture data from an ongoing banding program, this paper presents the distribution of brood-rearing and moulting sites and the use of these sites over time. Along Hudson Bay and Ungava Bay, the most important brood-rearing and moulting areas are the stretch of coastal lowlands between the Mariet River and Shallow Bay and between Rivière aux Feuilles and Virgin Lake, respectively. Of all adult geese captured during the banding program (n = 41 924), 7.5% (standard error [SE] 0.13%) were recaptures, that is, birds that had previously been caught and banded; annual recapture rates ranged from 5.1% to 11.4%. The mean and median distances between the site of first recapture and the original site of capture were 4.3 km (SE 0.22 km) and 1.5 km, respectively. Juveniles moved, on average, 5.4 km farther than adults and males moved 1.4 km farther than females. Among geese banded as juveniles, males moved twice as far as females: 11.5 km versus 5.7 km.

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.

Prevalence and Genotype Distribution of Chlamydia psittaci in Feral Canada Geese (Branta canadensis) in Belgium

2013 ◽  
Vol 13 (6) ◽  
pp. 382-384 ◽  
Author(s):  
Veerle Dickx ◽  
Isabelle D. Kalmar ◽  
Paul Tavernier ◽  
Daisy Vanrompay
Keyword(s):  
Chlamydia Psittaci ◽  
Branta Canadensis ◽  
Canada Geese ◽  
Genotype Distribution
Sign in / Sign up

Export Citation Format

Share Document