Food Habits of Wintering Waterfowl on the Great Salt Lake, Utah
Two invertebrates, brine shrimp (Artemia franciscana) and brine flies (Ephydridac), occur in great densities in the Great Salt Lake (GSL) but it is unknown whether ducks forage extensively on them during winter or rely on freshwater food. Common Goldeneye (Bucephala clangula), Northern Shoveler (Ana...
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ftutahsudc:oai:digitalcommons.usu.edu:wild_facpub-3507 2023-05-15T17:43:52+02:00 Food Habits of Wintering Waterfowl on the Great Salt Lake, Utah Vest, Josh L. Conover, Michael R. The Waterbird Society 2010-06-23T07:00:00Z text/html https://digitalcommons.usu.edu/wild_facpub/2507 https://digitalcommons.usu.edu/context/wild_facpub/article/3507/type/native/viewcontent unknown Hosted by Utah State University Libraries https://digitalcommons.usu.edu/wild_facpub/2507 https://digitalcommons.usu.edu/context/wild_facpub/article/3507/type/native/viewcontent Copyright for this work is held by the author. Transmission or reproduction of materials protected by copyright beyond that allowed by fair use requires the written permission of the copyright owners. Works not in the public domain cannot be commercially exploited without permission of the copyright owner. Responsibility for any use rests exclusively with the user. For more information contact the Institutional Repository Librarian at digitalcommons@usu.edu. PDM Wildland Resources Faculty Publications brine fly brine shrimp Common Goldeneye food habits Great Salt Lake Green-winged Teal Northern Shoveler Life Sciences text 2010 ftutahsudc 2022-09-22T17:19:30Z Two invertebrates, brine shrimp (Artemia franciscana) and brine flies (Ephydridac), occur in great densities in the Great Salt Lake (GSL) but it is unknown whether ducks forage extensively on them during winter or rely on freshwater food. Common Goldeneye (Bucephala clangula), Northern Shoveler (Anas clypeala) and Green-winged Teal (Anas crecca) were collected from the GSL during winters 2004–05 and 2005–06 to evaluate their food habits. Brine shrimp and brine flies comprised more than 70% of the winter diet of these ducks. Common Goldeneyes consumed mainly brine fly larvae (68% based on dry weight biomass), which live primarily along the substrate. Northern Shovelers fed on brine shrimp cysts (52%) and adult brine shrimp (20%) while Green-winged Teal consumed mainly brine shrimp cysts (80%). In some years, up to half of the brine shrimp cysts in the GSL are commercially harvested. Care should be taken so that this commercial harvest does not adversely impact ducks that depend on these brine shrimp cysts for winter food. Text Northern Shoveler Shoveler Utah State University: DigitalCommons@USU |
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Utah State University: DigitalCommons@USU |
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topic |
brine fly brine shrimp Common Goldeneye food habits Great Salt Lake Green-winged Teal Northern Shoveler Life Sciences |
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brine fly brine shrimp Common Goldeneye food habits Great Salt Lake Green-winged Teal Northern Shoveler Life Sciences Vest, Josh L. Conover, Michael R. Food Habits of Wintering Waterfowl on the Great Salt Lake, Utah |
topic_facet |
brine fly brine shrimp Common Goldeneye food habits Great Salt Lake Green-winged Teal Northern Shoveler Life Sciences |
description |
Two invertebrates, brine shrimp (Artemia franciscana) and brine flies (Ephydridac), occur in great densities in the Great Salt Lake (GSL) but it is unknown whether ducks forage extensively on them during winter or rely on freshwater food. Common Goldeneye (Bucephala clangula), Northern Shoveler (Anas clypeala) and Green-winged Teal (Anas crecca) were collected from the GSL during winters 2004–05 and 2005–06 to evaluate their food habits. Brine shrimp and brine flies comprised more than 70% of the winter diet of these ducks. Common Goldeneyes consumed mainly brine fly larvae (68% based on dry weight biomass), which live primarily along the substrate. Northern Shovelers fed on brine shrimp cysts (52%) and adult brine shrimp (20%) while Green-winged Teal consumed mainly brine shrimp cysts (80%). In some years, up to half of the brine shrimp cysts in the GSL are commercially harvested. Care should be taken so that this commercial harvest does not adversely impact ducks that depend on these brine shrimp cysts for winter food. |
author2 |
The Waterbird Society |
format |
Text |
author |
Vest, Josh L. Conover, Michael R. |
author_facet |
Vest, Josh L. Conover, Michael R. |
author_sort |
Vest, Josh L. |
title |
Food Habits of Wintering Waterfowl on the Great Salt Lake, Utah |
title_short |
Food Habits of Wintering Waterfowl on the Great Salt Lake, Utah |
title_full |
Food Habits of Wintering Waterfowl on the Great Salt Lake, Utah |
title_fullStr |
Food Habits of Wintering Waterfowl on the Great Salt Lake, Utah |
title_full_unstemmed |
Food Habits of Wintering Waterfowl on the Great Salt Lake, Utah |
title_sort |
food habits of wintering waterfowl on the great salt lake, utah |
publisher |
Hosted by Utah State University Libraries |
publishDate |
2010 |
url |
https://digitalcommons.usu.edu/wild_facpub/2507 https://digitalcommons.usu.edu/context/wild_facpub/article/3507/type/native/viewcontent |
genre |
Northern Shoveler Shoveler |
genre_facet |
Northern Shoveler Shoveler |
op_source |
Wildland Resources Faculty Publications |
op_relation |
https://digitalcommons.usu.edu/wild_facpub/2507 https://digitalcommons.usu.edu/context/wild_facpub/article/3507/type/native/viewcontent |
op_rights |
Copyright for this work is held by the author. Transmission or reproduction of materials protected by copyright beyond that allowed by fair use requires the written permission of the copyright owners. Works not in the public domain cannot be commercially exploited without permission of the copyright owner. Responsibility for any use rests exclusively with the user. For more information contact the Institutional Repository Librarian at digitalcommons@usu.edu. |
op_rightsnorm |
PDM |
_version_ |
1766146018463711232 |