Intra-seasonal decline of clutch size in Lesser Snow Geese

Oecologia ◽  
1989 ◽  
Vol 79 (1) ◽  
pp. 83-90 ◽  
Author(s):  
Jean Hamann ◽  
Fred Cooke
Keyword(s):  
Clutch Size ◽  
Snow Geese ◽  
Lesser Snow Geese ◽  
Seasonal Decline

Corrections: Genetic and Environmental Components of Clutch Size Variance in a Wild Population of Lesser Snow Geese (Anser cacurlescens caerulescens)

Evolution ◽  
1987 ◽  
Vol 41 (2) ◽  
pp. 453 ◽  
Author(s):  
C. Scott Findlay ◽  
Fred Cooke
Keyword(s):  
Clutch Size ◽  
Wild Population ◽  
Snow Geese ◽  
Lesser Snow Geese

Effects of parasitic infections on clutch size of lesser snow geese from a northern breeding colony

1994 ◽  
Vol 72 (3) ◽  
pp. 541-544 ◽  
Author(s):  
Michael Clinchy ◽  
Ian K. Barker
Keyword(s):  
Clutch Size ◽  
Parasite Load ◽  
Convincing Evidence ◽  
Parasitic Infections ◽  
Breeding Colony ◽  
Proximate Cause ◽  
Snow Geese ◽  
Lesser Snow Geese ◽  
Anser Caerulescens Caerulescens

A density-dependent decline in the average clutch size of lesser snow geese (Anser caerulescens caerulescens) occurred from 1973 to 1989 at the breeding colony on the shores of La Pérouse Bay, Manitoba. An increase in average parasite load was hypothesized to be one of the two most likely causes of this decline. We shot 28 incubating adult female lesser snow geese at the La Pérouse Bay colony and examined the carcasses for parasites to determine if there was any proximate association between parasitic infections and the size of the clutch a female laid. We found no convincing evidence that parasitic infections were the proximate cause of any reduction in clutch size. In the absence of evidence of any direct effect of parasites, we conclude that an increase in the average parasite load is probably not the cause of the long-term decline in clutch size at La Pérouse Bay. By default, we suggest that increased intraspecific competition for food at the staging areas on the migratory flyway is the most likely cause of the decline in clutch size.

Does Clutch Size Vary with Cohort in Lesser Snow Geese?

1985 ◽  
Vol 49 (2) ◽  
pp. 417 ◽  
Author(s):  
C. Scott Findlay ◽  
Robert F. Rockwell ◽  
Fred Cooke
Keyword(s):  
Clutch Size ◽  
Snow Geese ◽  
Lesser Snow Geese

scholarly journals REPEATABILITY AND HERITABILITY OF CLUTCH SIZE IN LESSER SNOW GEESE

Evolution ◽  
1987 ◽  
Vol 41 (2) ◽  
pp. 453-453
Keyword(s):  
Clutch Size ◽  
Snow Geese ◽  
Lesser Snow Geese

scholarly journals Age effects on clutch size and laying dates of individual female Lesser Snow Geese Anser caerulescens

Ibis ◽  
2008 ◽  
Vol 129 ◽  
pp. 527-532 ◽  
Author(s):  
JEAN HAMANN ◽  
FRED COOKE
Keyword(s):  
Clutch Size ◽  
Age Effects ◽  
Individual Female ◽  
Snow Geese ◽  
Lesser Snow Geese ◽  
Anser Caerulescens

scholarly journals Is there a trade-off between egg weight and clutch size in wild Lesser Snow Geese (Anser c. caerulescens)?

1989 ◽  
Vol 2 (6) ◽  
pp. 457-472 ◽  
Author(s):  
C. M. Lessells ◽  
F. Cooke ◽  
R. F. Rockwell
Keyword(s):  
Clutch Size ◽  
Egg Weight ◽  
Trade Off ◽  
Snow Geese ◽  
Lesser Snow Geese

Is there an Optimal Clutch Size in Snow Geese?

1987 ◽  
Vol 130 (6) ◽  
pp. 839-863 ◽  
Author(s):  
R. F. Rockwell ◽  
C. S. Findlay ◽  
F. Cooke
Keyword(s):  
Clutch Size ◽  
Snow Geese ◽  
Optimal Clutch Size
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