Producing wild fish phenotypes in hatchery-reared fish

Cogliati, Karen M.; Noakes, David L. G.; Khan, Fenton; Sharpe, Cameron S.; Schreck, Carl B.

doi:10.1007/s10641-022-01279-9

Cited by 7 publications

(1 citation statement)

References 99 publications

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“…There are numerous hatchery protocols that exist to help improve retention and survival of stocked fish (Brown and Laland 2001; Cogliati et al 2022). One major concern in southwestern streams is the long‐distance movement of fish downstream over nonnative fish barriers, installed to protect upstream native populations.…”

Section: Discussionmentioning

confidence: 99%

Movement, not survival, differs between wild and hatchery‐reared imperiled desert fishes

Hedden

Gido

Hedden

et al. 2023

N American J Fish Manag

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Stocking streams with hatchery produced fishes is an increasingly common practice to restore native populations but the fate of these fish is uncertain due to low survival or high emigration rates. Monitoring these vital population rates is needed to assess stocking and translocation of rare and endangered fishes to identify approaches that maximize persistence and survival and ultimately result in established populations. We quantified survival, emigration, movement directionality, and long term (24 months) trends in apparent survival of stocked and wild caught fish implanted with passive integrated transponder (PIT) tags. We PIT tagged and tracked 1,419 individuals, consisting of direct comparisons between two species of hatchery and wild fish, as well as four other wild captured species, from 2020 to 2022 in three desert streams in Arizona and New Mexico. We found that hatchery fish had high (>98%) estimates of survival after being released (<40 days), that was similar to all tagged wild fish. But hatchery fish had a five‐fold higher emigration rate than wild conspecifics shortly (<40 days) after being released. Emigrating hatchery fish also tended to move downstream, whereas wild fish were more likely to move upstream. Additionally, apparent survival estimates were about ten times higher for tagged wild fish than hatchery conspecifics six months after release; hatchery fish apparent survival approached zero after about 165 days but did not approach zero for wild fish until 690 days following tagging and release. Our results suggest emigration, rather than reduced survival might limit the success of stocking efforts. Thus, choosing optimal stocking locations and the time of year of the stocking, such as upstream reaches during times near the species reproduction season, might improve retention and establishment of stocked fish.

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Section: Discussionmentioning

confidence: 99%

Movement, not survival, differs between wild and hatchery‐reared imperiled desert fishes

Hedden

Gido

Hedden

et al. 2023

N American J Fish Manag

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What is a fish? The life and legend of David L.G. Noakes

et al. 2022

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David Lloyd George Noakes (1942–2020) is best known for his insatiable curiosity, his quick wit and dry sense of humor, his scientific contributions to the field of animal behaviour, and his ability to form and maintain long-lasting connections. His research interests were vast but remained grounded in early life history, behaviour, social behaviour, the evolution of behaviour, behavioural genetics, and evolutionary ecology. David had a remarkable ability to establish and maintain strong connections within the international academic community. David was also internationally recognized for his numerous contributions as a scientific editor, promoting accessibility to the international community that he served. We memorialize David’s legacy in this tribute article, ensuring that his accomplishments and the momentous impact he had on the scientific community are not soon forgotten.

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