التفاصيل البيبلوغرافية
| العنوان: |
Genomic Characterization of Coho Salmon Spawning Populations from the Hood Canal. |
| المؤلفون: |
Bohling, Justin, Von Bargen, Jennifer, Bahls, Peter |
| المصدر: |
Transactions of the American Fisheries Society; Jan2020, Vol. 149 Issue 1, p3-13, 11p |
| مستخلص: |
We investigated the genetic structure among Coho Salmon Oncorhynchus kisutch spawning populations in the Hood Canal of western Washington State, USA. Freshwater tributaries that drain into this marine fjord support natural production of Coho Salmon. Furthermore, there is a hatchery that produces a stock of Coho Salmon genetically distinct from local natural‐origin populations. Both stocks support multiple fisheries in the Hood Canal, which would benefit from data regarding the extent of gene flow between the tributaries themselves and also with the hatchery stock. We used restriction‐site‐associated DNA sequencing to generate genomic data, which we aligned to the Coho Salmon reference genome to identify variants. Over 30,000 single‐nucleotide polymorphisms were identified among the 420 samples we sequenced. There was little genetic differentiation between Coho Salmon sampled from the tributaries, suggesting that they form a genetically homogeneous population. In contrast, the local hatchery stock was highly differentiated from the tributary spawning populations. Distinct genetic groups emerged from the hatchery samples that corresponded to broodlines on a 3‐year cycle, likely due to low levels of inclusion of 2‐year‐old jacks in hatchery propagation. Hybridization between the hatchery stock and natural populations appeared to be low, and few of the returning adults sampled in the local tributaries had high genetic assignment to this stock. Our results provide insights into the population dynamics of naturally spawning populations of Coho Salmon in the Hood Canal and the extent of gene flow with a highly differentiated hatchery stock. These data will inform fisheries management, including the potential impact of harvest on naturally produced Coho Salmon, and have implications for hatchery propagation in this region. [ABSTRACT FROM AUTHOR] |
|
Copyright of Transactions of the American Fisheries Society is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) |
| قاعدة البيانات: |
Supplemental Index |
