The effect of substrate rearing on the growth, development, and survival of larval white sturgeon (Acipenser transmontanus) during early ontogeny.

Boucher, M.

doi:10.24124/2012/bpgub861

Cited by 6 publications

(17 citation statements)

References 58 publications

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“…The difference in trajectory of routine aerobic scope for YSL was mainly a result of higher mass‐specific RMR in bare‐tank‐reared larvae. A significant difference in yolk absorption efficiency and liver lipid reserves for fish reared in different substrata has been observed previously (Boucher et al, ) and, in combination with the results presented here for glycogen, indicate that the lower MMR in bare‐tank‐reared larvae is caused by less available metabolic fuel; a finding consistent with the hypothesis by Darveau et al . () that MMR is supply limited.…”

Section: Discussionsupporting

confidence: 93%

“…Boucher et al . () reported lower hepatic lipid stores in bare reared larvae, which indicates less available substratum for catabolism to fuel the burst and sustained swimming activity required for the MMR trials.…”

Section: Discussionmentioning

confidence: 98%

“…For example, the low aerobic scope of larvae during the endogenous period has been postulated to be associated with a high sensitivity to increases in temperature (Pörtner & Farrell, ). The limited aerobic scope in the bare treatment group could also be the root of the significantly greater mortality of larvae reared at warmer temperatures (Boucher et al, ).…”

Section: Discussionmentioning

confidence: 99%

“…While habitat requirements of YSL A. transmontanus are unclear, there is increasing evidence that gravel substratum is important during early developmental stages (Bennett et al, ). Other studies have also shown that in both laboratory and riverine conditions, Acipenser oxyrinchus Mitchill 1815 and A. transmontanus larvae occurred in gravel (Gessner et al, ; McAdam, ) and performed better in terms of growth and survival when provided with gravel substratum (Baker et al, ; Boucher et al, ), however the mechanistic basis for this is not known. Clearly, such knowledge would benefit hatchery rearing practices and may also be useful for projects creating or restoring habitat in rivers altered by hydroelectric installations.…”

Section: Introductionmentioning

confidence: 99%

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The effect of substrate rearing on growth, aerobic scope and physiology of larval white sturgeonAcipenser transmontanus

Boucher

Baker

Brauner

et al. 2018

Journal of Fish Biology

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The effect of substratum on growth and metabolic rate was assessed in larval white sturgeon Acipenser transmontanus. Yolk-sac larvae (YSL) were reared in bare tanks or tanks with gravel as substratum from hatch until approximately 16 days post hatch (dph). The effect of an artificial substratum was also evaluated on growth alone. Substratum had a significant effect on mass, with larvae reared in gravel and artificial substrata being larger than those reared without substratum. Routine metabolic rates were significantly lower and relative aerobic scope (the difference between maximum and routine metabolic rate) was significantly higher for YSL and feeding larvae (FL) reared in gravel relative to those reared in bare tanks, particularly before fish started feeding exogenously. Furthermore, gravel-reared larvae had higher whole-body glycogen concentrations relative to bare-tank-reared larvae. Routine factorial scope (maximum metabolic rate divided by routine metabolic rate) was relatively low in all treatments (< 1·7) indicating a limited ability to elevate metabolic rate above routine early in development and mass exponents for metabolic rate exceeded 1. Taken together, these data indicate that YSL reared without substratum may divert more of their energy to non-growth related processes impairing growth. This finding underscores the importance of adequate rearing substratum for growth of A. transmontanus and may provide support for habitat restoration and alternative hatchery rearing methods associated with sturgeon conservation.

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Section: Discussionsupporting

confidence: 93%

Section: Discussionmentioning

confidence: 98%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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The effect of substrate rearing on growth, aerobic scope and physiology of larval white sturgeonAcipenser transmontanus

Boucher

Baker

Brauner

et al. 2018

Journal of Fish Biology

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“…Total length of fish, yolk area and yolk perimeter were measured in millimeters using the Motic Image Plus software. Similar methods have used imaging software to measure yolk crosssectional area (Wells and Pinder 1996;Marty et al 1997;Boucher 2012). Relative yolk area was measured by dividing the yolk area at hatch by the average egg area of the population.…”

Section: Yolk Area Analysismentioning

confidence: 99%

Local adaptation to cold temperatures by larval coho salmon (Oncorhynchus kisutch) from different populations throughout British Columbia

Tuor¹

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Environmental variables influenced egg size, fecundity, female size and gonadal somatic index, such that higher latitude of spawning grounds increased, larger systems decreased, and increased temperatures experienced by a population increased the four life-history traits.Suggesting significant effects of latitude of spawning grounds, size of spawning system and temperatures experienced by a population on shaping patterns of reproductive investment. A laboratory incubation study revealed no difference in survival and performance between families from a southern and a northern population reared at near-freezing incubation temperatures. These findings suggest plasticity in developmental processes of coho salmon, as each population was successful across a wide range of temperatures, and in particular developed successfully with minimal fitness effects at the extreme ranges of near-freezing temperatures.ii

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Survival and Growth of Lake Sturgeon during Early Life Stages as a Function of Rearing Environment

et al. 2013

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The need for hatchery programs to reflect the latest scientific knowledge is critical for understudied groups with unique ecologies such as Acipenseriform species, including Lake Sturgeon Acipenser fulvescens. In order to address uncertainties regarding the efficacy of Lake Sturgeon culture techniques, we quantified and compared growth and survival at the egg, larval, and juvenile life history stages as a function of hatchery rearing environment over 2 years (two cohorts). Furthermore, we evaluated growth and survival of juveniles produced from three methods of progeny collection including direct gamete takes, collection of naturally spawned eggs from the stream substrate, and collection of larvae dispersing downstream from the spawning grounds. Progeny from each collection method were evenly divided between a streamside hatchery on the natal river and a traditional hatchery. Progeny reared at the streamside hatchery experienced a natural temperature regime and were exposed to natal water only filtered to remove larger sediments. We found that daily survival at the egg stage varied as a function of hatchery environment, duration of incubation, and maternal sources. Microbial infection during incubation contributed significantly to mortality, was higher, and occurred earlier in the incubation period at the streamside hatchery than at the traditional hatchery. Hatching rate was significantly higher at the streamside hatchery in 2006 than at the traditional hatchery. Daily survival at the larval stage was high at both hatcheries but was significantly higher at the streamside hatchery in 2006. Importantly, survival of progeny collected as dispersing larvae was significantly lower during the first week of rearing in both hatchery environments and years. Growth rates at the juvenile stage were comparable between hatcheries and inter‐individual variation in growth increased through the rearing period in both years. Natural temperature regimes resulted in variable egg incubation time and concomitant variation in larval size at hatch that extended into the juvenile stage. Results indicate conservation hatchery programs that incorporate rearing environments reflective of natural conditions can increase phenotypic variation in stocked progeny without compromising survival in the hatchery.

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The effect of substrate rearing on the growth, development, and survival of larval white sturgeon (Acipenser transmontanus) during early ontogeny.

Cited by 6 publications

References 58 publications

The effect of substrate rearing on growth, aerobic scope and physiology of larval white sturgeonAcipenser transmontanus

The effect of substrate rearing on growth, aerobic scope and physiology of larval white sturgeonAcipenser transmontanus

Local adaptation to cold temperatures by larval coho salmon (Oncorhynchus kisutch) from different populations throughout British Columbia

Survival and Growth of Lake Sturgeon during Early Life Stages as a Function of Rearing Environment

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