Experimental evidence of homing to site of incubation by mature sockeye salmon, Oncorhynchus nerka

Quinn, Thomas P.; Stewart, Ian J.; Boatright, Christopher P.

doi:10.1016/j.anbehav.2006.03.003

Cited by 70 publications

(70 citation statements)

References 38 publications

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“…While knowledge of the spatial scale at which migratory fish populations home accurately is limited and unresolved (Quinn 2005, Quinn et al 2006, our findings offer definitive support for the ability of wild chinook salmon to distinguish natal sites with high spatial precision while providing clearer definition to the scale at which straying occurs. Fine-scale straying was common in Big Creek, occurring with relatively high frequency between the adjacent spawning clusters in the upper basin.…”

Section: Discussionsupporting

confidence: 50%

“…Further, the existence of straying varied between the two sites in the upper basin where carcasses were collected, with more fine-scale straying occurring from upstream origins to downstream spawning than the reverse pattern. At river reaches of increasingly fine scale, it is likely that final spawning decisions may be determined by local-scale site factors rather than precise homing ability, and it remains possible that salmon in this study accurately recognized natal scents but chose alternative sites in the nearby cluster based on physical habitat attributes conducive to reproductive success (Hendry et al 1995, Quinn et al 2006. The maintenance of species-level life history diversity is essential for providing metapopulation stability, ecosystem integrity, and resilience against climate-based range shifts (Parmesan 2006, Schindler et al 2010).…”

Section: Discussionmentioning

confidence: 99%

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Juvenile dispersal affects straying behaviors of adults in a migratory population

Hamann

Kennedy

2012

Ecology

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Abstract. The resilience of organisms to large-scale environmental and climatic change depends, in part, upon the ability to colonize and occupy new habitats. While previous efforts to describe homing, or natal site fidelity, of migratory organisms have been hindered by the confounding effects of fragmented landscapes and management practices, realistic conservation efforts must include considerations of the behavioral diversity represented by animal movements and dispersal. Herein, we quantify straying away from natal origins by adult chinook salmon (Oncorhynchus tshawytscha) in a wild population that inhabits a pristine wilderness basin. Using natural isotopic signatures ( 87 Sr/ 86 Sr) to reconstruct the migratory behaviors of unhandled individuals over their entire life cycle, we identified ecological and behavioral factors influencing the propensity to stray. Our results indicate that natal site fidelity is scale dependent, ranging from 55% at ;1-km distances to 87% at longer (.10-km scale) distances, and juvenile dispersal and sex highly influence straying occurrence. These findings lend support for the conservation of behavioral diversity for population persistence, and we propose straying as a mechanism for maintaining genetic diversity at low population densities.

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Section: Discussionsupporting

confidence: 50%

Section: Discussionmentioning

confidence: 99%

Juvenile dispersal affects straying behaviors of adults in a migratory population

Hamann

Kennedy

2012

Ecology

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“…typically spawn in streams or lakes, spend a variable amount of time as fry in freshwater, and move into marine waters for 2 to 7 years before returning as adults to spawn in freshwater (Quinn 2005). Sockeye Salmon O. nerka are finely adapted to local conditions that influence reproductive success and survival (Taylor 1991;Fraser et al 2011) and hence home to their natal sites on a small spatial scale to spawn (Quinn et al 2006). The tendency to home to natal sites to spawn produces reproductive isolation between populations and demographic independence among populations that must be taken into account in the management of wild and enhanced populations supporting commercial fisheries.…”

mentioning

confidence: 99%

Homing of Sockeye Salmon within Hidden Lake, Alaska, Can Be Used to Achieve Hatchery Management Goals

Habicht

Tobias

Fandrei³

et al. 2013

N American J Fish Manag

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The supplementation of natural populations of Pacific salmon Oncorhynchus spp. with hatchery fish poses unique management challenges. Two such challenges addressed in this study are limiting the number of hatchery fish spawning with natural‐origin fish and maximizing the number of natural‐origin fish in the supplementation broodstock. In this study, we focus on stock enhancement of Sockeye Salmon O. nerka in Hidden Lake, Alaska, where the Trail Lakes Hatchery supplements the natural population with hatchery‐raised fry. Production in Hidden Lake is limited by the availability of spawning habitat and not by juvenile rearing capacity. The hatchery collects broodstock from the lake and releases fry with thermally marked otoliths at one of two primary natural spawning sites in Hidden Lake each year. During this study, an average of 58% of the fish returning to the lake through a weir on the outlet stream were of hatchery origin. However, an average of 88% of the fish at the release site were hatchery‐origin fish, indicating a nonrandom distribution of hatchery‐origin spawners. This pattern is consistent with homing to specific sites within the lake of either or both hatchery‐ and wild‐origin fish. However, this distribution results in a larger‐than‐desirable proportion of hatchery‐origin fish spawning with natural‐origin fish at the release site. The proportion of hatchery‐origin fish used for brood is also larger than desirable because the site is also the broodstock collection site. We propose that releasing hatchery fish at a new location removed from the primary spawning areas and the hatchery broodstock collection site will reduce the proportion of hatchery‐origin fish spawning with wild‐origin fish and increase the proportion of wild‐origin fish in the broodstock, if our results are due, at least in part, to homing of hatchery fish. Received May 12, 2012; accepted May 20, 2013

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“…Climate change presents a challenge to Pacific salmonids because they are philopatric and have a relatively low straying rate (Neville et al 2006, Quinn et al 2006, Keefer & Caudill 2014. This pattern promotes local adaptation (Quinn & Dittman 1990) and may limit salmonid resilience if changes in water temperature and discharge regimes outpace their capacity to adapt.…”

Section: Introductionmentioning

confidence: 99%

Assessing freshwater life-stage vulnerability of an endangered Chinook salmon population to climate change influences on stream habitat

Honea¹,

McClure²,

Jorgensen³

et al. 2016

Clim. Res.

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tat and how species respond (Groves et al. 2012, Seney et al. 2013. Each stage of a species' life history may be affected differently by changes in its habitat. For example, Radchuk et al. (2013) ABSTRACT: We linked a set of climate, hydrology, landscape, and fish population models to estimate the relative influence of freshwater habitat variables on the abundance of a population of endangered stream-type Chinook salmon Oncorhynchus tshawytscha responding to a warming climate. The hydrology models estimated that increases in annual air temperature and winter precipitation would lead to increases in water temperature and changes in discharge, including higher flows during the egg-incubation period and lower flows during the summer rearing period. The spatially explicit population model estimated a resulting decline of 0 to 7% in the number of spawners, with 3 of 4 global climate models estimating a decline of 4 to 7%. Increased water temperature during the summer spawning period was the most limiting among habitat variables modeled, but our modeling suggested that aggressive habitat restoration (increasing forested area and reducing impervious area) could mitigate some spawner abundance reductions. Better knowledge of the links between climate changes and habitat response, including increased streambed scour due to the larger and more frequent winter high-discharge events predicted by our hydrology models, would improve our ability to estimate climate effects on populations. Future limitation by elevated summer water temperature, and potentially egg-pocket scour, would further stress an endangered population currently limited by the percentage of fine sediment around egg pockets. Identifying such changes demonstrates the utility of models that consider climate and integrate life-stage-specific habitat influences over a species' life cycle, thereby indicating restoration actions with the potential to benefit sensitive life stages.

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Experimental evidence of homing to site of incubation by mature sockeye salmon, Oncorhynchus nerka

Cited by 70 publications

References 38 publications

Juvenile dispersal affects straying behaviors of adults in a migratory population

Juvenile dispersal affects straying behaviors of adults in a migratory population

Homing of Sockeye Salmon within Hidden Lake, Alaska, Can Be Used to Achieve Hatchery Management Goals

Assessing freshwater life-stage vulnerability of an endangered Chinook salmon population to climate change influences on stream habitat

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