Effects of density on variation in individual growth and differentiation in endocrine response of Japanese sea cucumber (Apostichopus japonicus Selenka)

Pei, Surui; Dong, Shuanglin; Wang, Fang; Tian, Xiangli; Gao, Qinfeng

doi:10.1016/j.aquaculture.2012.04.032

Cited by 50 publications

(53 citation statements)

References 36 publications

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“…This glucose loading can lead to changes in the total energy metabolism of sea cucumber. Cortisol plays an important role in promoting gluconeogenesis and fat degradation (Pei et al, 2012). Our results showed that the relatively lower cortisol levels were observed in diets with carbohydrate levels of 55.82% and 66.09%.…”

Section: Discussionmentioning

confidence: 62%

Effects of dietary carbohydrate level on growth, biochemical composition and glucose metabolism of juvenile sea cucumber Apostichopus japonicus (Selenka)

et al. 2015

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Section: Discussionmentioning

confidence: 62%

Effects of dietary carbohydrate level on growth, biochemical composition and glucose metabolism of juvenile sea cucumber Apostichopus japonicus (Selenka)

et al. 2015

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“…Tong () reported that juvenile Jasus edwardsii cultured at 50 m −2 had nearly twice the weight of those cultured at 200 m −2 . A reduction in growth of aquatic organisms at high stocking densities has previously been attributed to a reduction in water quality, increased competition for food and increased physical interactions among individuals (Pei, Dong, Wang, Tian & Gao ). In the present study, water quality was maintained at optimum levels for all treatments and feeding rates were adjusted according to animal density, so food abundance was not a limiting factor for growth of A. leptodactylus .…”

Section: Discussionmentioning

confidence: 99%

Effects of photoperiod and stocking density on survival, growth and physiological responses of narrow clawed crayfish (Astacus leptodactylus)

Farhadi¹,

Jensen

2015

Aquac Res

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Photoperiod and stocking density are critical factors influencing the performance of decapod crustaceans in culture, however, their influence on growth; survival and biochemical physiology of crayfish broodstock have rarely been considered. Analysis of biochemical physiology in crayfish broodstock during the non‐breeding season provides information on the energy storage requirements of broodstock for increased survival and reproductive output. Growth rate, moulting frequency, survival and biochemical physiology were measured in Astacus leptodactylus broodstock that were cultured at three different photoperiods (18L:6D; 12L:12D; and 6L:18D) and three stocking densities (10, 20 and 40 individuals m−2) during non‐breeding season. Survival of crayfish was highest at 18L:6D photophase and 10 m−2 (100%) than other treatments. Survival in the high stocking density was high when combined with 18L:6D photophase, but weight gain (WG) and specific growth rate (SGR) were higher at shorter photophase and lower stocking density. Longer photophase (18L:6D) increased stress responses, characterized by increased haemolymph lactate and glucose levels. Stocking density did not affect proximate composition of crayfish; however, individuals cultured at 18L:6D photophase had higher lipid content than other photoperiod treatments. The study demonstrated that culturing A. leptodactylus at 18L:6D photophase and 10 m−2 is critical for increased survival of broodstock.

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“…With successful hatchery and semi-intensive culture techniques that are currently used, the production of white sea cucumber is increasing year by year in China. Previous studies have mainly focused on physiological performance (Pei et al 2012, Lin et al 2013) and genetics (Ma et al 2014a,b); however, there is little information on nutritional characteristic and energy allocation of white sea cucumber.…”

Section: Introductionmentioning

confidence: 99%

A comparative study on growth, protein turnover and energy budget of green and white color morphs of sea cucumber Apostichopus japonicus (Selenka)

Xia¹,

Ren²,

Wang³

et al. 2017

Aquacult. Environ. Interact.

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A 98 d experiment was conducted to compare the growth performance, protein turnover and energy budget between green and white color morphs of the sea cucumber Apostichopus japonicus. During the experiment, sea cucumbers were fed a single natural diet of Sargassum thunbergii and a premixed artificial diet. Results showed that there was no significant interaction of diet, species or experimental time on growth performance and feed utilization of A. japonicus. Specific growth rate (SGR) of green sea cucumber was significantly higher than that of white sea cucumber. Green sea cucumber fed S. thunbergii exhibited much higher food conversion efficiency (FCE) and protein efficiency ratio (PER) compared to those on the artificial diet, indicating preferential absorption of S. thunbergii. There were also significant discrepancies in body wall production rate (BWPR), crude protein and ash content between green and white sea cucumber. The observed δ 15 N values gradually increased owing to the assimilation of the diets containing higher nitrogen stable isotope ratios. Green sea cucumber reflected and approached δ 15 N values of the experimental diets much more quickly and with shorter half-lives than white sea cucumber. The relatively constant metabolic contributions in intestine (71 to 78%) and body wall (46 to 52%) of sea cucumber indicated a stable bioenergetic distribution strategy of tissue. According to the time-based turnover model, the estimated fractionation (Δ 15 N) ranged from 2.37 to 3.30 ‰. The average formulas of energy allocation for green and white sea cucumber were: 100C = 7.8G + 53.1F + 6.2U + 32.8R, 100C = 6.3G + 57.9F + 8.9U + 27.0R, respectively. Taken together, our results suggest that white sea cucumber may have higher dietary quality requirements for growth and metabolism than green sea cucumber.KEY WORDS: Apostichopus japonicus · Growth · Nitrogen stable isotope · Protein turnover · Energy allocation OPEN PEN ACCESS CCESSA comparative study on growth, protein turnover and energy budget of green and white color morphs of sea cucumber Apostichopus japonicus (Selenka)

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Effects of density on variation in individual growth and differentiation in endocrine response of Japanese sea cucumber (Apostichopus japonicus Selenka)

Cited by 50 publications

References 36 publications

Effects of dietary carbohydrate level on growth, biochemical composition and glucose metabolism of juvenile sea cucumber Apostichopus japonicus (Selenka)

Effects of dietary carbohydrate level on growth, biochemical composition and glucose metabolism of juvenile sea cucumber Apostichopus japonicus (Selenka)

Effects of photoperiod and stocking density on survival, growth and physiological responses of narrow clawed crayfish (Astacus leptodactylus)

A comparative study on growth, protein turnover and energy budget of green and white color morphs of sea cucumber Apostichopus japonicus (Selenka)

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