Diet Changes in Breeding Herring Gulls (Larus argentatus) in Witless Bay, Newfoundland and Labrador, Canada, over 40 Years
The diets of gulls (Laridae) can have consequences for reproductive success, chick growth, and survival, yet there have been no quantitative assessments in eastern Newfoundland since the early 1970s. The diet of Herring Gulls (Larus argentatus) was examined through regurgitated prey items and pellet...
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Online Access: | https://pure.uhi.ac.uk/en/publications/b7f2aacb-97d5-4c9f-8ae6-819e80e14fef https://doi.org/10.1675/063.039.sp115 http://www.bioone.org/doi/10.1675/063.039.sp115 |
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ftuhipublicatio:oai:pure.atira.dk:publications/b7f2aacb-97d5-4c9f-8ae6-819e80e14fef 2024-06-23T07:52:11+00:00 Diet Changes in Breeding Herring Gulls (Larus argentatus) in Witless Bay, Newfoundland and Labrador, Canada, over 40 Years Bond, Alexander L. 2016-04-01 https://pure.uhi.ac.uk/en/publications/b7f2aacb-97d5-4c9f-8ae6-819e80e14fef https://doi.org/10.1675/063.039.sp115 http://www.bioone.org/doi/10.1675/063.039.sp115 eng eng https://pure.uhi.ac.uk/en/publications/b7f2aacb-97d5-4c9f-8ae6-819e80e14fef info:eu-repo/semantics/restrictedAccess Bond , A L 2016 , ' Diet Changes in Breeding Herring Gulls (Larus argentatus) in Witless Bay, Newfoundland and Labrador, Canada, over 40 Years ' , Waterbirds , vol. 39 , no. sp1 , pp. 152-158 . https://doi.org/10.1675/063.039.sp115 article 2016 ftuhipublicatio https://doi.org/10.1675/063.039.sp115 2024-05-27T23:56:27Z The diets of gulls (Laridae) can have consequences for reproductive success, chick growth, and survival, yet there have been no quantitative assessments in eastern Newfoundland since the early 1970s. The diet of Herring Gulls (Larus argentatus) was examined through regurgitated prey items and pellets on Gull Island, Witless Bay, Newfoundland and Labrador, Canada, in 2012, and compared with similar data from 1970–1971. There was a significant shift in Herring Gull diet composition from blue mussels (Mytilus edulis) and capelin (Mallotus villosus) in the 1970s to garbage and Common Murre (Uria aalge) eggs in 2012. Delays in capelin spawning and the large increase in breeding Common Murres on Gull Island are likely factors influencing Herring Gull diet. Garbage, which includes human food scraps as well as plastic debris, now constitutes the single largest diet item for Herring Gulls, corresponding with a global increase in plastic pollution. The consistently low contribution of fisheries discards suggests that changes in fishing practices and availability of discards are only one possible factor in the Herring Gull decline in Witless Bay. Article in Journal/Newspaper Common Murre Newfoundland Uria aalge uria University of the Highlands and Islands: Research Database of UHI Newfoundland Canada Gull Island ENVELOPE(-55.315,-55.315,49.533,49.533) Waterbirds 39 sp1 152 158 |
institution |
Open Polar |
collection |
University of the Highlands and Islands: Research Database of UHI |
op_collection_id |
ftuhipublicatio |
language |
English |
description |
The diets of gulls (Laridae) can have consequences for reproductive success, chick growth, and survival, yet there have been no quantitative assessments in eastern Newfoundland since the early 1970s. The diet of Herring Gulls (Larus argentatus) was examined through regurgitated prey items and pellets on Gull Island, Witless Bay, Newfoundland and Labrador, Canada, in 2012, and compared with similar data from 1970–1971. There was a significant shift in Herring Gull diet composition from blue mussels (Mytilus edulis) and capelin (Mallotus villosus) in the 1970s to garbage and Common Murre (Uria aalge) eggs in 2012. Delays in capelin spawning and the large increase in breeding Common Murres on Gull Island are likely factors influencing Herring Gull diet. Garbage, which includes human food scraps as well as plastic debris, now constitutes the single largest diet item for Herring Gulls, corresponding with a global increase in plastic pollution. The consistently low contribution of fisheries discards suggests that changes in fishing practices and availability of discards are only one possible factor in the Herring Gull decline in Witless Bay. |
format |
Article in Journal/Newspaper |
author |
Bond, Alexander L. |
spellingShingle |
Bond, Alexander L. Diet Changes in Breeding Herring Gulls (Larus argentatus) in Witless Bay, Newfoundland and Labrador, Canada, over 40 Years |
author_facet |
Bond, Alexander L. |
author_sort |
Bond, Alexander L. |
title |
Diet Changes in Breeding Herring Gulls (Larus argentatus) in Witless Bay, Newfoundland and Labrador, Canada, over 40 Years |
title_short |
Diet Changes in Breeding Herring Gulls (Larus argentatus) in Witless Bay, Newfoundland and Labrador, Canada, over 40 Years |
title_full |
Diet Changes in Breeding Herring Gulls (Larus argentatus) in Witless Bay, Newfoundland and Labrador, Canada, over 40 Years |
title_fullStr |
Diet Changes in Breeding Herring Gulls (Larus argentatus) in Witless Bay, Newfoundland and Labrador, Canada, over 40 Years |
title_full_unstemmed |
Diet Changes in Breeding Herring Gulls (Larus argentatus) in Witless Bay, Newfoundland and Labrador, Canada, over 40 Years |
title_sort |
diet changes in breeding herring gulls (larus argentatus) in witless bay, newfoundland and labrador, canada, over 40 years |
publishDate |
2016 |
url |
https://pure.uhi.ac.uk/en/publications/b7f2aacb-97d5-4c9f-8ae6-819e80e14fef https://doi.org/10.1675/063.039.sp115 http://www.bioone.org/doi/10.1675/063.039.sp115 |
long_lat |
ENVELOPE(-55.315,-55.315,49.533,49.533) |
geographic |
Newfoundland Canada Gull Island |
geographic_facet |
Newfoundland Canada Gull Island |
genre |
Common Murre Newfoundland Uria aalge uria |
genre_facet |
Common Murre Newfoundland Uria aalge uria |
op_source |
Bond , A L 2016 , ' Diet Changes in Breeding Herring Gulls (Larus argentatus) in Witless Bay, Newfoundland and Labrador, Canada, over 40 Years ' , Waterbirds , vol. 39 , no. sp1 , pp. 152-158 . https://doi.org/10.1675/063.039.sp115 |
op_relation |
https://pure.uhi.ac.uk/en/publications/b7f2aacb-97d5-4c9f-8ae6-819e80e14fef |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1675/063.039.sp115 |
container_title |
Waterbirds |
container_volume |
39 |
container_issue |
sp1 |
container_start_page |
152 |
op_container_end_page |
158 |
_version_ |
1802643431123582976 |