Environmental <scp>DNA</scp> survey of the Winter Salmonosphere in the Gulf of Alaska

Deeg, Christoph; Li, Shaorong; Esenkulova, Svetlana; Hunt, Brian P. V.; Schulze, Angela D.; Miller, Kristina M.

doi:10.1002/edn3.404

Cited by 9 publications

(4 citation statements)

References 58 publications

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“…Another factor we were unable to explore that undoubtedly impacts ocean distributions is the distribution of prey species. Salmonids are likely to aggregate in areas of abundant prey, which may coincide with physical features like mesoscale eddies (Crawford et al., 2007; Deeg et al., 2023). Potential evidence of this relationship is seen in the fitted distribution models, where high Chinook salmon abundance was detected near the Bering Sea shelf slope (Springer et al., 1996) and high sockeye salmon abundance was detected along the southern edge of the Alaska Peninsula and Aleutian Island Chain, areas known to be influenced by frequent eddy activity (Prants et al., 2019; Rosengard et al., 2021; Ueno et al., 2009).…”

Section: Discussionmentioning

confidence: 99%

“…In the ocean, salmon are likely maximizing growth and avoiding predation by preferentially occupying habitats with ample food resources and favourable thermal conditions (Deeg et al., 2023; McKinnell & Trudel, 2014; Myers et al., 2009). As a consequence of the uncertainty surrounding high‐seas distribution patterns, however, the temperature ranges defining oceanic salmon thermal habitats remain unresolved.…”

Section: Introductionmentioning

confidence: 99%

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Opening the black box: New insights into the role of temperature in the marine distributions of Pacific salmon

Langan,

Cunningham,

Watson

et al. 2024

Fish and Fisheries

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Pacific salmon (Oncorhynchus spp.) spend much of their life near the ocean surface where climatic and oceanographic conditions affect their habitat and survival. Despite decades of study, critical knowledge gaps persist regarding their ecology and distributions. Consequently, it has been difficult to assess how environmental conditions influence the high‐seas distribution and habitat use of these culturally and socioeconomically important fishes, presenting challenges to fisheries managers trying to evaluate how climate change and fishing activities may impact salmon populations. We used a recently compiled, comprehensive database of historical coastal and high‐seas salmon survey data (1953–2022) in the North Pacific to fit species distribution models that (1) characterize the marine spatial distribution of six species of Oncorhynchus, (2) evaluate species‐specific temperature preferences, and (3) investigate how species' temperature preferences influence distribution. Sea surface temperature, along with seasonal migrations associated with spawning and feeding, significantly affects the distribution of all species, where the warm limits of estimated preferred thermal ranges were more similar than the cold limits. Furthermore, the distributions of some species appear more responsive to temperature than others and recently observed warm conditions have likely impacted realized ranges. These models have expanded our understanding of salmon ocean distributions and thermal niches by providing a unique window into this often unobserved but important part of the life cycle. They also serve as a baseline for future investigations into the mechanisms influencing salmon spatial ecology, responses to climate change, and vulnerability to harvest across the North Pacific.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Opening the black box: New insights into the role of temperature in the marine distributions of Pacific salmon

Langan,

Cunningham,

Watson

et al. 2024

Fish and Fisheries

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“…An important aspect of effective management of rare species is noninvasive environmental monitoring using the molecular method of environmental DNA analysis, successfully applied and superior to the traditional fish survey (Berger et al., 2020; Boivin‐Delisle et al., 2020; Deeg et al., 2023; Dejean et al., 2012; Meulenbroek et al., 2022). The success of this method can be attributed to the fact that it is rapid and accurate, noninvasive and sensitive, relatively inexpensive and less labor‐intensive than other methods, facilitating the detection and management of specific species—including rare ones (Anderson et al., 2018; Jerde et al., 2011; Piggott et al., 2020; Thomsen, Kielgast, Iversen, Wiuf, et al., 2012; Wilcox et al., 2013, 2016)—as well as identification of entire communities (Araujo et al., 2023; Kelly et al., 2019; Li et al., 2018; Thomsen, Kielgast, Iversen, Moller, et al., 2012).…”

Section: Introductionmentioning

confidence: 99%

Environmental DNA reveals the ecology and seasonal migration of a rare sturgeon species in the Ural River

Abileva,

Turzhanova,

Zhamangara

et al. 2024

Environmental DNA

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Environmental DNA (eDNA) technology is an essential tool for monitoring living organisms in ecological research. The combination of eDNA methods with traditional methods of ecological observation can significantly improve the study of the ecology of rare species. Here, we present the development and application of an eDNA approach to identify rare sturgeons in the lower reaches of the Ural River (Zhaiyk) (~1084 km). The presence of representatives of the genus Sturgeon was detected at all sites in spring (nine sites) and autumn (ten sites) while they were absent during the summer period, consistent with their semi‐anadromous ecology. Detection in spring and autumn indicates the passage of spring and winter forms to the lower and upper spawning grounds, respectively. This study confirms the difficulties of species‐specific identification of Eurasian sturgeon and provides the first documented eDNA detection of specimens of the genus Sturgeon in the Ural River. It also provides a biogeographic snapshot of their distribution, experimentally confirming their seasonal migrations in the lower reaches of the river. The successful detection of sturgeon motivates further eDNA surveys of this and other fish species for accurate species identification and population assessment, opening up prospects for the management of these threatened species.

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“…An important aspect of effective management of rare species is non-invasive environmental monitoring using the molecular method of environmental DNA analysis, successfully applied and superior to the traditional sh survey (TFS) [10][11][12][13][14]. The success of this method can be attributed to the fact that it is rapid and accurate, non-invasive and sensitive, relatively inexpensive and less labor-intensive than other methods, facilitating the detection and management of speci c species -including rare ones [15][16][17][18][19][20] -as well as identi cation of entire communities [21][22][23][24].…”

Section: Introductionmentioning

confidence: 99%

eDNA reveals the ecology and seasonal migration of a rare sturgeon species in the Ural River

Abileva,

Turzhanova,

Zhamangara

et al. 2023

Preprint

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Environmental DNA (eDNA) technology is an essential tool for monitoring living organisms in ecological research. The combination of eDNA methods with traditional methods of ecological observation can significantly improve the study of the ecology of rare species. Here we present the development and application of an eDNA approach to identify rare sturgeons in the lower reaches of the Ural River (Zhaiyk) (~ 1084 km). The presence of representatives of the genus Sturgeon was detected at all sites in spring (nine sites) and autumn (ten sites), while they were absent during the summer period, consistent with their semi-anadromous ecology. Detection in spring and autumn indicates the passage of spring and winter forms to the lower and upper spawning grounds respectively. This study confirms the difficulties of species-specific identification of Eurasian sturgeon and provides the first documented eDNA detection of specimens of the genus Sturgeon in the Ural River. It also provides a biogeographic snapshot of their distribution, experimentally confirming their seasonal migrations in the lower reaches of the river. The successful detection of sturgeon motivates further eDNA surveys of this and other fish species for accurate species identification and population assessment, opening up prospects for the management of these threatened species.

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Environmental DNA survey of the Winter Salmonosphere in the Gulf of Alaska

Abstract: This is an open access article under the terms of the Creative Commons Attribution-NonCommercial License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes.

Cited by 9 publications

References 58 publications

Opening the black box: New insights into the role of temperature in the marine distributions of Pacific salmon

Opening the black box: New insights into the role of temperature in the marine distributions of Pacific salmon

Environmental DNA reveals the ecology and seasonal migration of a rare sturgeon species in the Ural River

eDNA reveals the ecology and seasonal migration of a rare sturgeon species in the Ural River

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