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Contributions of Stocked and Naturally-Reproduced Rainbow Trout in Two Tennessee Tailwater Trout Fisheries.

紀錄類型:	書目-語言資料,手稿 : Monograph/item
正題名/作者:	Contributions of Stocked and Naturally-Reproduced Rainbow Trout in Two Tennessee Tailwater Trout Fisheries./
作者:	Ballard, Connor E.
面頁冊數:	1 online resource (74 pages)
附註:	Source: Masters Abstracts International, Volume: 85-02.
Contained By:	Masters Abstracts International85-02.
標題:	Biology. -
電子資源:	click for full text (PQDT)
ISBN:	9798380081030

Contributions of Stocked and Naturally-Reproduced Rainbow Trout in Two Tennessee Tailwater Trout Fisheries.
Ballard, Connor E.

Contributions of Stocked and Naturally-Reproduced Rainbow Trout in Two Tennessee Tailwater Trout Fisheries. - 1 online resource (74 pages)

Source: Masters Abstracts International, Volume: 85-02.

Thesis (M.S.)--Tennessee Technological University, 2023.

Includes bibliographical references

In southeastern U.S. hydropeaking tailwaters, extreme hydrologic variation generally precludes successful natural reproduction of Rainbow Trout Oncorhynchus mykiss. As a result, most tailwater fisheries rely on hatchery Rainbow Trout, typically stocked as either fingerlings (TL 229 mm). Due to poor overall survival of hatchery Rainbow Trout, fisheries managers have shifted towards stocking fewer and larger Rainbow Trout; however, fingerling Rainbow Trout are regularly stocked in multiple Tennessee tailwater fisheries. The Norris and Fort Patrick Henry tailwaters are both popular stocked Rainbow Trout fisheries in Tennessee. In recent years naturally-reproduced Rainbow Trout have been observed in both tailwaters, which raised questions about the contributions of stocked and naturally-reproduced Rainbow Trout. I investigated the abundance, survival, recruitment, and growth of stocked fingerling, stocked catchable, and naturally-reproduced Rainbow Trout in the Norris and Fort Patrick Henry tailwaters. From 2021-2022 I marked hatchery Rainbow Trout with a fin clip or a coded wire tag and a fin clip prior to stocking. I sampled each tailwater with a combination of boat and backpack electrofishing following a robust mark-recapture sampling design. Naturally-reproduced Rainbow Trout made up the majority of the Norris tailwater Rainbow Trout population. Robust mark-recapture model results in the Norris tailwater showed naturally-reproduced Rainbow Trout were more abundant than hatchery fingerlings, had greater or similar apparent survival rates to hatchery fingerlings, and more recruited to the Rainbow Trout population than hatchery fingerlings. In the Fort Patrick Henry tailwater, hatchery catchables and naturally-reproduced Rainbow Trout were similarly abundant. Growth rates of catchable Rainbow Trout stocked in the Fort Patrick Henry tailwater (35.1 mm per month) were among the highest reported in any southeastern U.S. tailwater fishery. Overall, my work suggested that hatchery fingerling Rainbow Trout recruited poorly in both fisheries and may not be an effective use of stocking resources in southeastern U.S. tailwaters where survival of hatchery trout is generally low. In addition, naturally-reproduced Rainbow Trout can contribute meaningfully in southeastern U.S. tailwater trout fisheries.

Electronic reproduction.
Ann Arbor, Mich. :
ProQuest,
2024

Mode of access: World Wide Web

ISBN: 9798380081030Subjects--Topical Terms:

599573
Biology.
Subjects--Index Terms:

Fish stockingIndex Terms--Genre/Form:

554714
Electronic books.

Contributions of Stocked and Naturally-Reproduced Rainbow Trout in Two Tennessee Tailwater Trout Fisheries.
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504 $a Includes bibliographical references
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