Geochemical signatures in fin rays provide a nonlethal method to distinguish the natal rearing streams of endangered juvenile Chinook Salmon Oncorhynchus tshawytscha in the Wenatchee River, Washington

Linley, Timothy J.; Krogstad, E. J.; Nims, Megan K.; Langshaw, Russell B.

doi:10.1016/j.fishres.2016.04.004

Cited by 6 publications

(3 citation statements)

References 80 publications

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“…Thus, it may be possible to evaluate straying by using fin rays or otoliths, but different emigration times of juveniles from tributaries may decrease the discrimination of adults (Linley et al. ) and decrease the utility of stray estimates generated using this method.…”

Section: Discussionmentioning

confidence: 66%

“…Differences in chemical signatures of the water have been found in tributaries of the upper Wenatchee River, and it was possible to discriminate juvenile spring Chinook Salmon that resided in tributaries prior to migration as yearlings based on chemical differences in fin rays (Linley et al. ). Thus, it may be possible to evaluate straying by using fin rays or otoliths, but different emigration times of juveniles from tributaries may decrease the discrimination of adults (Linley et al.…”

Section: Discussionmentioning

confidence: 99%

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Stray Rates of Natural‐Origin Chinook Salmon and Steelhead in the Upper Columbia River Watershed

Pearsons

O'Connor

2020

Trans Am Fish Soc

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Despite the importance of straying in understanding the ecology of Pacific salmon Oncorhynchus spp. and steelhead O. mykiss, most of what is known about salmon and steelhead straying comes from tagged hatchery fish. We provide estimates of donor straying by natural‐origin spring, summer, and fall Chinook Salmon O. tshawytscha and summer steelhead at three spatial scales in the upper Columbia River watershed by using PIT tags. In total, 823,770 natural‐origin Chinook Salmon and steelhead were PIT‐tagged as juveniles in the Wenatchee, Entiat, Methow, and Okanogan River subbasins and tributaries and the upper Columbia River between 2002 and 2017. Anadromous adults with PIT tags (n = 2,611) were detected at a variety of antenna arrays in the Columbia River basin between 2004 and 2018. Mean donor stray rates of each population were less than 1% at the basin scale (range = 0.0–0.7%), less than 10% at the subbasin scale (range = 0.0–9.8%), and less than 15% at the tributary scale (range = 0.0–14.3%). Many of the populations (11 of 28) that were evaluated across all spatial scales did not have any strays detected, and the mean of means for both species’ stray rates at all spatial scales was generally less than 5% (range = 0.2–4.0%). Chinook Salmon and steelhead strayed at similar rates when originating from the same subbasins and tributaries. Most straying occurred in an upstream direction at the subbasin (84%) and tributary (94%) scales. Variation in stray rates was most consistently associated with spatial scale and location and was less than 15% for both species at all spatial scales.

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Section: Discussionmentioning

confidence: 66%

Section: Discussionmentioning

confidence: 99%

Stray Rates of Natural‐Origin Chinook Salmon and Steelhead in the Upper Columbia River Watershed

Pearsons

O'Connor

2020

Trans Am Fish Soc

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“…Water samples were collected in acid‐washed (2% HNO 3 ) 60 mL perfluoroalkoxy (PFA) bottles following the procedures described by Linley et al (2016). After shipment to the Pacific Northwest National Laboratory, the samples were filtered through PFA (1–2 μm) membranes, dried over low heat, and alternately treated with ultra‐high purity 15 M nitric acid and 30% hydrogen peroxide to dissolve organic matter.…”

Section: Methodsmentioning

confidence: 99%

Otolith ⁸⁷Sr/⁸⁶Sr identifies natal origin, movement and life history of Burbot Lota lota in the Kootenai River following 45 years of impoundment

Dunnigan

Linley

Janak

et al. 2023

Ecology of Freshwater Fish

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Hydropower has long been an effective form of renewable energy, but the development of the resource has negatively impacted fishes throughout the world. Formulating recovery plans to mitigate these effects requires a firm understanding of species‐specific provenance, life history and life stage habitat requirements. However, the importance of this information is often only recognised after a substantial population decline, when obtaining it becomes demographically challenging. We provide a case study for this scenario and present a post hoc approach to gain insight into these critical data gaps for Burbot Lota lota in the upper Kootenai River in Montana and British Columbia. The population once supported a robust tribal and recreational harvest but declined following impoundment and these fisheries have remained closed or curtailed for nearly 20 years. The reasons for the decline are unknown and actions to assist recovery have been constrained by limited information regarding natal origin, life history and habitat use. We addressed this issue using strontium isotope ratios (87Sr/86Sr) in otoliths collected over four decades in Lake Koocanusa, the reservoir on the Kootenai River above Libby Dam. Due to the geologic heterogeneity of the basin and resulting variation in water 87Sr/86Sr, the assignment probability for Burbot to their region of natal origin approached unity. Otolith 87Sr/86Sr also indicated the population was comprised of mainstem‐ and tributary‐origin forms and their relative abundance changed over time. Mainstem Burbot was most abundant during the 1970s and 2000s, whereas tributary forms dominated between these periods. We suggest ecosystem changes following impoundment contributed to this shift in life history forms and the overall decline of the population. Our findings underscore the need for additional investigations of these impacts to guide restoration efforts.

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The Atlantic Goliath Grouper: Conservation Strategies for a Critically Endangered Species in Brazil

Hostim‐Silva

Bertoncini

Borgonha

et al. 2017

Advances in Marine Vertebrate Research in Latin America

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Geochemical signatures in fin rays provide a nonlethal method to distinguish the natal rearing streams of endangered juvenile Chinook Salmon Oncorhynchus tshawytscha in the Wenatchee River, Washington

Cited by 6 publications

References 80 publications

Stray Rates of Natural‐Origin Chinook Salmon and Steelhead in the Upper Columbia River Watershed

Stray Rates of Natural‐Origin Chinook Salmon and Steelhead in the Upper Columbia River Watershed

Otolith ⁸⁷Sr/⁸⁶Sr identifies natal origin, movement and life history of Burbot Lota lota in the Kootenai River following 45 years of impoundment

The Atlantic Goliath Grouper: Conservation Strategies for a Critically Endangered Species in Brazil

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Geochemical signatures in fin rays provide a nonlethal method to distinguish the natal rearing streams of endangered juvenile Chinook Salmon Oncorhynchus tshawytscha in the Wenatchee River, Washington

Cited by 6 publications

References 80 publications

Stray Rates of Natural‐Origin Chinook Salmon and Steelhead in the Upper Columbia River Watershed

Stray Rates of Natural‐Origin Chinook Salmon and Steelhead in the Upper Columbia River Watershed

Otolith 87Sr/86Sr identifies natal origin, movement and life history of Burbot Lota lota in the Kootenai River following 45 years of impoundment

The Atlantic Goliath Grouper: Conservation Strategies for a Critically Endangered Species in Brazil

Contact Info

Product

Resources

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Otolith ⁸⁷Sr/⁸⁶Sr identifies natal origin, movement and life history of Burbot Lota lota in the Kootenai River following 45 years of impoundment