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Summer foods of lesser scaup in subarctic taiga

Arctic

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Abstract

Twenty-five adult and 38 juvenile lesser scaup (Aythya affinis) that were collected in taiga north of Great Slave Lake, Northwest Territories, had eaten almost entirely animal material (99 i?? 1 per cent, P < 0.05). Juveniles collected in mid-summer had tended to feed on free-swimming organisms such as Chaoborinae and Conchostraca; whereas juveniles collected in late summer had tended to feed, as did adults in June, on bottom-associated organisms such as amphipods, odonates, and corixids. Sampling aquatic organisms concomitantly with collecting ducks revealed that seeds, copepods, and cladocerans were seldom or never eaten; most other organisms were consumed in proportions that were not significantly different (P < 0.05) from those in the collected samples.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Summer foods of lesser scaup in subarctic taiga
Series title:
Arctic
Volume
23
Issue:
1
Year Published:
1970
Language:
English
Description:
p. 35-44
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Arctic
First page:
35
Last page:
44
Number of Pages:
9