Epidemiology ofCampylobacter, Salmonellaand antimicrobial resistantEscherichia coliin free-living Canada geese (Branta canadensis) from three sources in southern Ontario

Nadine A. Vogt; David L. Pearl; Eduardo N. Taboada; Steven K. Mutschall; Nicol Janecko; Richard Reid-Smith; Bryan Bloomfield; Claire M. Jardine

doi:10.1111/zph.12511

Aquatic Bird Bornavirus-Associated Disease in Free-Living Canada Geese (Branta canadensis) in the Northeastern USA

Journal of Wildlife Diseases ◽

10.7589/2016-07-160 ◽

2017 ◽

Vol 53 (3) ◽

pp. 607-611 ◽

Cited By ~ 3

Author(s):

Maureen Murray ◽

Jianhua Guo ◽

Ian Tizard ◽

Samuel Jennings ◽

H. L. Shivaprasad ◽

...

Keyword(s):

Branta Canadensis ◽

Canada Geese ◽

Aquatic Bird ◽

Free Living ◽

Northeastern Usa

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Comparisons of body reserve buildup and use in several groups of Canada geese

Canadian Journal of Zoology ◽

10.1139/z85-265 ◽

1985 ◽

Vol 63 (8) ◽

pp. 1765-1772 ◽

Cited By ~ 30

Author(s):

S. K. Mainguy ◽

V. G. Thomas

Keyword(s):

Egg Laying ◽

Branta Canadensis ◽

Canada Geese ◽

James Bay ◽

Southern Ontario ◽

Fat Reserves ◽

Body Tissues ◽

Northern Latitudes ◽

Branta Canadensis Interior ◽

Flight Muscles

Changes in proximate body composition were analyzed in nonmigratory giant Canada geese (Branta canadensis maxima) from Toronto, Ont. (43°37′N, 79°20′W), collected during early and late egg laying in 1980 and 1981, and during incubation and moult in 1981. Early nesting geese had more fat, though not more protein, than late nesting birds in both years. Geese collected in 1981 had more fat and protein than geese collected in 1980. Early and late laying females in both years lost on average 198 g (26%) of fat and 34 g (5%) of protein from the beginning to the end of laying. Fifty-eight percent of the fat reserves possessed at the beginning of laying were lost during incubation. Fat reserves of prelaying Branta canadensis interior nesting on the James Bay lowland (53°15′N, 82°09′W) in 1980 were 9% greater than those of B. c. maxima nesting in Southern Ontario. During the moult at Toronto, Canada geese lost weight from flight muscles while gaining weight in other muscles and in fat. This pattern is seen in waterfowl moulting at several latitudes, and indicates that geese moulting in both southern and northern latitudes probably rely on nutrients in food rather than in body tissues to supply growing feathers.

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

Canadian Journal of Zoology ◽

10.1139/z81-072 ◽

1981 ◽

Vol 59 (3) ◽

pp. 493-497 ◽

Cited By ~ 3

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.

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

Hydrobiologia ◽

10.1007/s10750-007-0712-8 ◽

2007 ◽

Vol 586 (1) ◽

pp. 393-401 ◽

Cited By ~ 20

Author(s):

Robert L. Unckless ◽

Joseph C. Makarewicz

Keyword(s):

Water Quality ◽

Nutrient Loading ◽

Branta Canadensis ◽

Canada Geese ◽

The Impact

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An Analysis of Function in the Formation Flight of Canada Geese

The Auk ◽

10.1093/auk/105.4.749 ◽

1988 ◽

Vol 105 (4) ◽

pp. 749-755 ◽

Cited By ~ 21

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.

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

The Canadian Field-Naturalist ◽

10.22621/cfn.v129i3.1721 ◽

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.

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

Canadian Journal of Zoology ◽

10.1139/z70-039 ◽

1970 ◽

Vol 48 (2) ◽

pp. 235-240 ◽

Cited By ~ 4

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.

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

Canadian Journal of Zoology ◽

10.1139/z76-075 ◽

1976 ◽

Vol 54 (5) ◽

pp. 634-643 ◽

Cited By ~ 5

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.

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The life histories of north-temperate populations of the crayfish Cambarus robustus and Cambarus bartoni

Canadian Journal of Zoology ◽

10.1139/z85-343 ◽

1985 ◽

Vol 63 (10) ◽

pp. 2313-2322 ◽

Cited By ~ 27

Author(s):

Premysl Hamr ◽

Michael Berrill

Keyword(s):

Life History ◽

Life Histories ◽

Carapace Length ◽

Late Summer ◽

Temperate Climate ◽

Free Living ◽

Southern Ontario ◽

The Third ◽

Early Fall ◽

First Time

The life histories of the crayfish Cambarus robustus and Cambarus bartoni were studied in the Kawartha Lakes region of southern Ontario. There were marked differences in their breeding and molting cycles compared with the familiar pattern of the Orconectes species of this region. Egg extrusion occurred later (July in C. robustus, June in C. bartoni), and juveniles therefore did not become free living until late summer or early fall. With little growing time in their first summer, they measured only 5–10 mm in carapace length (CPL) before growth ceased for the winter. At the end of their second summer the still immature crayfish measured 17–26 mm CPL in C. robustus and 13–20 mm CPL in C. bartoni. Maturity was therefore not attained until the end of the third summer, when most C. robustus matured at 34–45 mm CPL and C. bartoni at 25–30 mm CPL. The majority of individuals apparently reproduced for the first time during their fourth summer; a few apparently survived into another summer, reaching carapace lengths greater than 50 mm in C. robustus and 30 mm in C. bartoni. In males of both species, form 1 and form 2 occur throughout the summer. Although lacking the synchrony of Orconectes species, breeding and molting activities are still confined to the period between April and October. The timing of the life-history events observed in these two Cambarus species may be adaptations to seasonal stresses of the swift water environments that these species inhabit as well as to the relative harshness of the northern temperate climate.

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