Individual condition and stream temperature influence early maturation of rainbow and steelhead trout, Oncorhynchus mykiss

McMillan, John; Dunham, Jason B.; Reeves, Gordon H.; Mills, Justin S.; Jordan, Chris E.

doi:10.1007/s10641-011-9921-0

Cited by 65 publications

(92 citation statements)

References 58 publications

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“…McMillan et al (2012) found, for a population of O. mykiss in interior Oregon, that males maturing at age 1+ were significantly longer than nonmaturing males (Table 2). They did not find any age-1+ females maturing as residents.…”

Section: Growth Size and Lipid Contentmentioning

confidence: 94%

“…Washington; Hanson et al 2011 Early male maturation in fresh water positively correlated with size and lipid content 9 months prior to the spawning season Oregon; McMillan et al 2012 Females with faster growth and higher lipids matured as residents, while males with faster growth matured as residents; residents had lower metabolic costs.…”

Section: Oregon; Garrett 2013mentioning

confidence: 99%

“…For instance, both McMillan et al (2012) and Sloat and Reeves (2014) found that male O. mykiss that matured in fresh water were larger than nonmaturing males. This is generally consistent with what has been documented in Atlantic salmon, where faster growth and larger size early in life are often (e.g., Aubin-Horth et al 2005, but not always (e.g., Bacon et al 2005), linked to male residency.…”

Section: Growth Size and Lipid Contentmentioning

confidence: 99%

“…First, because most studies on anadromy and residency in O. mykiss are recent, there is an opportunity to summarize the most influential processes and identify knowledge gaps to help guide future research and monitoring. Second, O. mykiss inhabit the broadest latitudinal range of environments of any salmonine (Behnke 2002), and the environmental variation may provide clues about which habitat factors affect anadromy and residency (Benjamin et al 2013;McMillan et al 2012;Sloat and Reeves 2014), which is especially relevant given the need for understanding the implications of climate change. Third, though genetics (e.g., Nichols et al 2008) and individual condition early in life (e.g., McMillan et al 2012) influence anadromy and residency in O. mykiss as they do with other salmonines (e.g., Simpson 1992), O. mykiss are arguably the most complex of the partially anadromous salmonines.…”

Section: Introductionmentioning

confidence: 99%

“…Second, O. mykiss inhabit the broadest latitudinal range of environments of any salmonine (Behnke 2002), and the environmental variation may provide clues about which habitat factors affect anadromy and residency (Benjamin et al 2013;McMillan et al 2012;Sloat and Reeves 2014), which is especially relevant given the need for understanding the implications of climate change. Third, though genetics (e.g., Nichols et al 2008) and individual condition early in life (e.g., McMillan et al 2012) influence anadromy and residency in O. mykiss as they do with other salmonines (e.g., Simpson 1992), O. mykiss are arguably the most complex of the partially anadromous salmonines. Thus, they may provide additional insights into life history expression that are observed rarely in Atlantic salmon, such as resident maturation by relatively small, young females (Sloat 2013;Sloat and Reeves 2014).…”

Section: Introductionmentioning

confidence: 99%

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Anadromy and residency in steelhead and rainbow trout (Oncorhynchus mykiss): a review of the processes and patterns

Kendall

McMillan

Sloat

et al. 2015

Can. J. Fish. Aquat. Sci.

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210

224

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Abstract:Oncorhynchus mykiss form partially migratory populations with anadromous fish that undergo marine migrations and residents that complete their life cycle in fresh water. Many populations' anadromous components are threatened or endangered, prompting interest in understanding ecological and evolutionary processes underlying anadromy and residency. In this paper, we synthesize information to better understand genetic and environmental influences on O. mykiss life histories, identify critical knowledge gaps, and suggest next steps. Anadromy and residency appear to reflect interactions among genetics, individual condition, and environmental influences. First, an increasing body of literature suggests that anadromous and resident individuals differ in the expression of genes related to growth, smoltification, and metabolism. Second, the literature supports the conditional strategy theory, where individuals adopt a life history pattern based on their conditional status relative to genetic thresholds along with ultimate effects of size and age at maturation and iteroparity. However, except for a generally positive association between residency and high lipid content plus a large attainable size in fresh water, the effects of body size and growth are inconsistent. Thus, individuals can exhibit plasticity in variable environments. Finally, patterns in anadromy and residency among and within populations suggested a wide range of possible environmental influences at different life stages, from freshwater temperature to marine survival. Although we document a number of interesting correlations, direct tests of mechanisms are scarce and little data exist on the extent of residency and anadromy. Consequently, we identified as many data gaps as conclusions, leaving ample room for future research.Résumé : Les truites arc-en-ciel (Oncorhynchus mykiss) forment des populations partiellement migratrices incluant des individus anadromes qui effectuent des migrations marines et des individus résidents dont le cycle biologique se déroule entièrement en eau douce. Les éléments anadromes de nombreuses populations sont menacés ou en voie de disparition, ce qui suscite un intérêt envers la compréhension des processus écologiques et évolutionnaires qui sous-tendent l'anadromie et la résidence. Nous présentons une synthèse de l'information disponible dans le but de mieux comprendre les influences génétiques et environnementales sur les cycles biologiques d'O. mykiss, de cerner les lacunes critiques en matière de connaissances et de proposer des avenues de recherche future. L'anadromie et la résidence semblent témoigner d'interactions entre la génétique, l'état des individus et des influences environnementales. D'abord, de plus en plus d'études donnent à penser que les individus anadromes et résidents diffèrent sur le plan de l'expression des gènes associés à la croissance, à la smoltification et au métabolisme. Deuxièmement, la documentation appuie la théorie de la stratégie conditionnelle selon laquelle les individus adoptent un m...

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Section: Growth Size and Lipid Contentmentioning

confidence: 94%

Section: Oregon; Garrett 2013mentioning

confidence: 99%

Section: Growth Size and Lipid Contentmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Anadromy and residency in steelhead and rainbow trout (Oncorhynchus mykiss): a review of the processes and patterns

Kendall

McMillan

Sloat

et al. 2015

Can. J. Fish. Aquat. Sci.

Self Cite

210

224

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Modeling ecohydrological impacts of land management and water use in the Silver Creek basin, Idaho

et al. 2014

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A number of anthropogenic stressors, including land use change and intensive water use, have caused stream habitat deterioration in arid and semiarid climates throughout the western U.S. These often contribute to high stream temperatures, a widespread water quality problem. Stream temperature is an important indicator of stream ecosystem health and is affected by catchment-scale climate and hydrological processes, morphology, and riparian vegetation. To properly manage affected systems and achieve ecosystem sustainability, it is important to understand the relative impact of these factors. In this study, we predict relative impacts of different stressors using an integrated catchment-scale ecohydrological model that simulates hydrological processes, stream temperature, and fish growth. This type of model offers a suitable measure of ecosystem services because it provides information about the reproductive capability of fish under different conditions. We applied the model to Silver Creek, Idaho, a stream highly valued for its world-renowned trout fishery. The simulations indicated that intensive water use by agriculture and climate change are both major contributors to habitat degradation in the study area. Agricultural practices that increase water use efficiency and mitigate drainage runoff are feasible and can have positive impacts on the ecosystem. All of the mitigation strategies simulated reduced stream temperatures to varying degrees; however, not all resulted in increases in fish growth. The results indicate that temperature dynamics, rather than point statistics, determine optimal growth conditions for fish. Temperature dynamics are influenced by surface water-groundwater interactions. Combined restoration strategies that can achieve ecosystem stability under climate change should be further explored.

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Energetic Trade‐Offs Faced by Brown Trout During Ontogeny and Reproduction

Berg

Fleming

2017

Brown Trout

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Individual condition and stream temperature influence early maturation of rainbow and steelhead trout, Oncorhynchus mykiss

Cited by 65 publications

References 58 publications

Anadromy and residency in steelhead and rainbow trout (Oncorhynchus mykiss): a review of the processes and patterns

Anadromy and residency in steelhead and rainbow trout (Oncorhynchus mykiss): a review of the processes and patterns

Modeling ecohydrological impacts of land management and water use in the Silver Creek basin, Idaho

Energetic Trade‐Offs Faced by Brown Trout During Ontogeny and Reproduction

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