Growth of Juvenile Scup,<i>Stenotomus chrysops</i>, Fed Three Commercial Diets

Perry, Dean M.; Redman, Dylan H.; Mercaldo‐Allen, Renée; Kuropat, Catherine

doi:10.1080/10454430903113792

Cited by 3 publications

(4 citation statements)

References 8 publications

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“…A feeding study involving Scup was conducted at the National Marine Fisheries Service (NMFS) laboratory in Milford, Connecticut, during the summer of 2008 to evaluate the aquaculture potential of Scup and to measure growth of juvenile Scup fed two commercial diets containing different levels of protein and lipid. These data complement results from a previous study (Perry et al 2009) that compared the growth of juvenile Scup fed three commercial diets. The commercial diet that provided the greatest growth in that experiment was used in our study, along with a new commercial diet, to provide further information relating to the growth of juvenile Scup under culture conditions.…”

supporting

confidence: 87%

“…Diet 1 contained lower levels of protein and lipid than diet 2 (Table 1). Our previous feeding study found that juvenile Scup grew significantly larger on the feed that contained the highest levels of protein and lipid (Perry et al 2009). Although the dietary protein content (55.5-58.5%) of diet 1 was higher, the lipid content (13.4-14.5%) was lower than those values used in growth studies of other juvenile sparids.…”

Section: Resultsmentioning

confidence: 96%

“…The successful rearing of other sparid species is evidence of the potential for Scup in commercial culture. Rapid growth rates exhibited by Scup under culture conditions suggest that they are a promising species for aquaculture, in either land-based systems or in cage culture (Perry et al 2009). Scup are hardy, readily accept commercial diets, tolerate handling, and exhibit high survival in holding tanks.…”

mentioning

confidence: 99%

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Growth of Juvenile Scup Fed Two Commercial Diets

Perry¹,

Redman²,

Mercaldo‐Allen³

et al. 2013

N American J Aquac

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Juvenile Scup Stenotomus chrysops 0.35–0.95 g were fed two different commercial diets for 9 weeks to determine growth rates. Diets were hand‐distributed to four replicate groups of 45 fish, four times a day. Survival among all treatments was high (90.0–92.5%), and both diets supported good growth. After five weeks, Scup fed diet 1 were significantly greater in length and weight than fish fed diet 2. These differences remained significant throughout the rest of the study. Specific growth rate (SGR) values were 5.8%/d for fish fed diet 1 and 5.5%/d for diet 2, while feed conversion ratios (FCR) were 1.22 for diet 1 and 1.25 for diet 2. Relative growth rate (RGR) values were diet 1 = 3,689% and diet 2 = 3,077%, and daily weight gain (DWG) values were diet 1 = 0.38 g/d and diet 2 = 0.31 g/d. Scup fed diet 1 had significantly greater final live weight, total length, weight gain, SGR, RGR, and DWG measurements than did fish fed diet 2. Juvenile Scup exhibited high growth rates and low feed conversion ratios when fed the two commercial diets, identifying them as a strong candidate species for commercial aquaculture.

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supporting

confidence: 87%

Section: Resultsmentioning

confidence: 96%

mentioning

confidence: 99%

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Growth of Juvenile Scup Fed Two Commercial Diets

Perry¹,

Redman²,

Mercaldo‐Allen³

et al. 2013

N American J Aquac

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“…Scup are managed by the Atlantic States Marine Fisheries Commission (ASMFC) and the Mid-Atlantic Fishery Management Council (MAFMC) under Amendment 8 to the Summer Flounder, Scup, and Black Sea Bass Fishery Management Plan (FMP). Recent studies conducted at the National Oceanic and Atmospheric Administration (NOAA) Fisheries, Milford Laboratory, examined growth rates of juvenile scup fed commercial diets and found them to acclimate quickly to tank conditions in the laboratory, and to exhibit rapid growth rates (Perry et al 2009(Perry et al , 2013. As scup are regulated under a fishery management plan, acclimate well to laboratory conditions, and reside in Long Island Sound where they are exposed to natural fluctuations in ambient CO 2, they are an appealing marine species for studying the effects of OA on somatic growth and otolith condition.…”

Section: Introductionmentioning

confidence: 99%

Effect of ocean acidification on growth and otolith condition of juvenile scup, Stenotomus chrysops

Perry

Redman

Widman

et al. 2015

Ecology and Evolution

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Increasing amounts of atmospheric carbon dioxide (CO2) from human industrial activities are causing changes in global ocean carbonate chemistry, resulting in a reduction in pH, a process termed “ocean acidification.” It is important to determine which species are sensitive to elevated levels of CO2 because of potential impacts to ecosystems, marine resources, biodiversity, food webs, populations, and effects on economies. Previous studies with marine fish have documented that exposure to elevated levels of CO2 caused increased growth and larger otoliths in some species. This study was conducted to determine whether the elevated partial pressure of CO2 (pCO2) would have an effect on growth, otolith (ear bone) condition, survival, or the skeleton of juvenile scup, Stenotomus chrysops, a species that supports both important commercial and recreational fisheries. Elevated levels of pCO2 (1200–2600 μatm) had no statistically significant effect on growth, survival, or otolith condition after 8 weeks of rearing. Field data show that in Long Island Sound, where scup spawn, in situ levels of pCO2 are already at levels ranging from 689 to 1828 μatm due to primary productivity, microbial activity, and anthropogenic inputs. These results demonstrate that ocean acidification is not likely to cause adverse effects on the growth and survivability of every species of marine fish. X‐ray analysis of the fish revealed a slightly higher incidence of hyperossification in the vertebrae of a few scup from the highest treatments compared to fish from the control treatments. Our results show that juvenile scup are tolerant to increases in seawater pCO2, possibly due to conditions this species encounters in their naturally variable environment and their well‐developed pH control mechanisms.

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Relation between Nucleic Acid Indices and Growth Rate in Fed and Fasting Juvenile Scup

Mercaldo‐Allen¹,

Kuropat²,

Perry³

et al. 2013

N American J Aquac

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The relationship between nucleic acid indices and daily instantaneous growth rate was determined for juvenile Scup Stenotomus chrysops in the laboratory. Weight‐based growth of Scup was measured for three 1‐week intervals during a 6‐week feeding experiment and showed a significant positive correlation with both RNA concentration (RNA; μg/mg tissue wet weight) and DNA concentration (DNA; μg/mg tissue wet weight), while the RNA: DNA ratio was not significantly correlated with the weight‐ or length‐based growth rate. The concentration of DNA showed a significant negative correlation with length‐based growth rate. Mean fish weight increased from 1.022 to 10.404 g, and mean TL increased from 43.219 to 85.377 mm. Changes in nucleic acid indices were measured in fish that were deprived of food over a 9‐d period. The RNA and RNA: DNA ratio values declined significantly within 5 d after fasting began, while DNA remained relatively stable. This study provides baseline nucleic acid values for fed and starved juvenile Scup over a range of fish sizes.

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Growth of Juvenile Scup,Stenotomus chrysops, Fed Three Commercial Diets

Cited by 3 publications

References 8 publications

Growth of Juvenile Scup Fed Two Commercial Diets

Growth of Juvenile Scup Fed Two Commercial Diets

Effect of ocean acidification on growth and otolith condition of juvenile scup, Stenotomus chrysops

Relation between Nucleic Acid Indices and Growth Rate in Fed and Fasting Juvenile Scup

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