Long-term survival of adult Arctic grayling (Thymallus arcticus) in the Kuparuk River, Alaska
Author Posting. © National Research Council Canada, 2004. This article is posted here by permission of National Research Council Canada for personal use, not for redistribution. The definitive version was published in Canadian Journal of Fisheries and Aquatic Sciences 61 (2004): 1954-1964, doi:10.11...
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Language: | English |
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ftwhoas:oai:darchive.mblwhoilibrary.org:1912/228 2023-05-15T14:31:20+02:00 Long-term survival of adult Arctic grayling (Thymallus arcticus) in the Kuparuk River, Alaska Buzby, Karen M. Deegan, Linda A. 2004-12-23 423997 bytes application/pdf https://hdl.handle.net/1912/228 en eng National Research Council Canada https://doi.org/10.1139/F04-126 Canadian Journal of Fisheries and Aquatic Sciences 61 (2004): 1954-1964 https://hdl.handle.net/1912/228 doi:10.1139/F04-126 Canadian Journal of Fisheries and Aquatic Sciences 61 (2004): 1954-1964 doi:10.1139/F04-126 Arctic grayling Thymallus arcticus Adult survival probabilities Article 2004 ftwhoas https://doi.org/10.1139/F04-126 2022-05-28T22:56:47Z Author Posting. © National Research Council Canada, 2004. This article is posted here by permission of National Research Council Canada for personal use, not for redistribution. The definitive version was published in Canadian Journal of Fisheries and Aquatic Sciences 61 (2004): 1954-1964, doi:10.1139/F04-126. In many long-lived species such as Arctic grayling (Thymallus arcticus), population growth rate is most sensitive to changes in adult survival probabilities. Understanding the factors that regulate adult survival in this species should provide insight into the population dynamics of this and other long-lived Arctic species. Using the program MARK, we analyzed 17 years of mark–recapture data to estimate survival rates for Arctic grayling in the Kuparuk River, Alaska, from 1985 to 2000. Mean annual survival rates overall ranged from 0.39 to 1.0 and averaged 0.71 ± 0.05 for resident and 0.75 ± 0.05 for nonresident fish. Spending the summer in the more productive fertilized zone of the experimental reach had no influence on survival despite higher productivity on all trophic levels and consistently higher growth rates in Arctic grayling. None of the environmental (stream temperature, discharge, winter severity, and incidence of drought) or population parameters (growth, condition factor, and mean fish size) that we examined explained significant amounts of variance in survival rates. The lack of responsiveness of survival to annual environmental conditions was unexpected and suggests that multiyear factors or life history tactics that maintain survival at the expense of growth and fecundity likely determine survival. This research was supported by National Science Foundation grants OPP-9911278 and DEB-9810222 in conjunction with the Long-term Ecological Research Program. Article in Journal/Newspaper Arctic grayling Arctic Thymallus arcticus Alaska Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server) Arctic Canada Canadian Journal of Fisheries and Aquatic Sciences 61 10 1954 1964 |
institution |
Open Polar |
collection |
Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server) |
op_collection_id |
ftwhoas |
language |
English |
topic |
Arctic grayling Thymallus arcticus Adult survival probabilities |
spellingShingle |
Arctic grayling Thymallus arcticus Adult survival probabilities Buzby, Karen M. Deegan, Linda A. Long-term survival of adult Arctic grayling (Thymallus arcticus) in the Kuparuk River, Alaska |
topic_facet |
Arctic grayling Thymallus arcticus Adult survival probabilities |
description |
Author Posting. © National Research Council Canada, 2004. This article is posted here by permission of National Research Council Canada for personal use, not for redistribution. The definitive version was published in Canadian Journal of Fisheries and Aquatic Sciences 61 (2004): 1954-1964, doi:10.1139/F04-126. In many long-lived species such as Arctic grayling (Thymallus arcticus), population growth rate is most sensitive to changes in adult survival probabilities. Understanding the factors that regulate adult survival in this species should provide insight into the population dynamics of this and other long-lived Arctic species. Using the program MARK, we analyzed 17 years of mark–recapture data to estimate survival rates for Arctic grayling in the Kuparuk River, Alaska, from 1985 to 2000. Mean annual survival rates overall ranged from 0.39 to 1.0 and averaged 0.71 ± 0.05 for resident and 0.75 ± 0.05 for nonresident fish. Spending the summer in the more productive fertilized zone of the experimental reach had no influence on survival despite higher productivity on all trophic levels and consistently higher growth rates in Arctic grayling. None of the environmental (stream temperature, discharge, winter severity, and incidence of drought) or population parameters (growth, condition factor, and mean fish size) that we examined explained significant amounts of variance in survival rates. The lack of responsiveness of survival to annual environmental conditions was unexpected and suggests that multiyear factors or life history tactics that maintain survival at the expense of growth and fecundity likely determine survival. This research was supported by National Science Foundation grants OPP-9911278 and DEB-9810222 in conjunction with the Long-term Ecological Research Program. |
format |
Article in Journal/Newspaper |
author |
Buzby, Karen M. Deegan, Linda A. |
author_facet |
Buzby, Karen M. Deegan, Linda A. |
author_sort |
Buzby, Karen M. |
title |
Long-term survival of adult Arctic grayling (Thymallus arcticus) in the Kuparuk River, Alaska |
title_short |
Long-term survival of adult Arctic grayling (Thymallus arcticus) in the Kuparuk River, Alaska |
title_full |
Long-term survival of adult Arctic grayling (Thymallus arcticus) in the Kuparuk River, Alaska |
title_fullStr |
Long-term survival of adult Arctic grayling (Thymallus arcticus) in the Kuparuk River, Alaska |
title_full_unstemmed |
Long-term survival of adult Arctic grayling (Thymallus arcticus) in the Kuparuk River, Alaska |
title_sort |
long-term survival of adult arctic grayling (thymallus arcticus) in the kuparuk river, alaska |
publisher |
National Research Council Canada |
publishDate |
2004 |
url |
https://hdl.handle.net/1912/228 |
geographic |
Arctic Canada |
geographic_facet |
Arctic Canada |
genre |
Arctic grayling Arctic Thymallus arcticus Alaska |
genre_facet |
Arctic grayling Arctic Thymallus arcticus Alaska |
op_source |
Canadian Journal of Fisheries and Aquatic Sciences 61 (2004): 1954-1964 doi:10.1139/F04-126 |
op_relation |
https://doi.org/10.1139/F04-126 Canadian Journal of Fisheries and Aquatic Sciences 61 (2004): 1954-1964 https://hdl.handle.net/1912/228 doi:10.1139/F04-126 |
op_doi |
https://doi.org/10.1139/F04-126 |
container_title |
Canadian Journal of Fisheries and Aquatic Sciences |
container_volume |
61 |
container_issue |
10 |
container_start_page |
1954 |
op_container_end_page |
1964 |
_version_ |
1766304995612819456 |