Estimates of genetic parameters for growth traits of the sea urchin, Strongylocentrotus intermedius

Liu, Xiaolin; Chang, Yaqing; Xiang, Jianhai; Cao, Xuebin

doi:10.1016/j.aquaculture.2004.10.014

Cited by 31 publications

(30 citation statements)

References 20 publications

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“…(2002) studies. However, recent studies indicate that differences in intrinsic growth rates in this study may be attributed to genetic variability (Liu et al ., 2003, 2005; Zhang et al ., 2012). …”

Section: Discussionmentioning

confidence: 60%

“…However, Liu et al . (2003, 2005) and Zang et al . (2012) suggested a genetic basis for growth among juvenile Strongylocentrotus intermedius (A. Agassiz).…”

Section: Introductionmentioning

confidence: 99%

“…Extrinsic factors affecting growth include availability and nutrient content, bioavailability of nutrients (Lawrence & Lane, 1982), habitat (Ebert, 1968; Agatsuma, 2007; Andrew & Byrne, 2007), population density (Siikavuopio et al ., 2007; Richardson et al ., 2011), competition (Grosjean et al ., 1996), osmotic condition (Giese & Farmanfarmaian, 1963), and temperature (Moore et al ., 1963; Agatsuma, 2007). Intraspecific variability in sea urchin growth rates may also be related to genetic variation, genomic expression, or epigenetic influences, some of which have been described in sea urchins (Liu et al ., 2003, 2005; Zhang et al ., 2012). …”

Section: Introductionmentioning

confidence: 99%

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Growth rates are related to production efficiencies in juveniles of the sea urchinLytechinus variegatus

et al. 2013

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Growth rates of newly-metamorphosed urchins from a single spawning event (three males and three females) were highly variable, despite being held en masse under identical environmental and nutritional conditions. As individuals reached ~5 mm diameter (0.07–0.10 g wet weight), they were placed in growth trials (23 dietary treatments containing various nutrient profiles). Elapsed time from the first individual entering the growth trials to the last individual entering was 121 days (N = 170 individuals). During the five-week growth trials, urchins were held individually and proffered a limiting ration to evaluate growth rate and production efficiency. Growth rates among individuals within each dietary treatment remained highly variable. Across all dietary treatments, individuals with an initially high growth rate (entering the study first) continued to grow at a faster rate than those with an initially low growth rate (entering the study at a later date), regardless of feed intake. Wet weight gain (ranging from 0.13 −3.19 g, P < 0.0001, R2 = 0.5801) and dry matter production efficiency (ranging from 25.2–180.5%, P = 0.0003, R2 = 0.6162) were negatively correlated with stocking date, regardless of dietary treatment. Although canalization of growth rate during en masse early post-metamorphic growth is possible, we hypothesize that intrinsic differences in growth rates are, in part, the result of differences (possibly genetic) in production efficiencies of individual Lytechinus variegatus. That is, some sea urchins are more efficient in converting feed to biomass. We further hypothesize that this variation may have evolved as an adaptive response to selective pressure related to food availability.

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Section: Discussionmentioning

confidence: 60%

“…However, Liu et al . (2003, 2005) and Zang et al . (2012) suggested a genetic basis for growth among juvenile Strongylocentrotus intermedius (A. Agassiz).…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Growth rates are related to production efficiencies in juveniles of the sea urchinLytechinus variegatus

et al. 2013

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“…Heritability was estimated using the following equations:

h_{S}^{2} = \frac{4 σ^{2} s}{σ^{2} e + σ^{2} d + σ^{2} s}

h_{D}^{2} = \frac{4 σ^{2} d}{σ^{2} e + σ^{2} d + σ^{2} s}

h_{SD}^{2} = \frac{2 σ^{2} s + 2 σ^{2} d}{σ^{2} e + σ^{2} d + σ^{2} s}

where

h_{S}^{2}

h_{D}^{2}

, and

h_{SD}^{2}

represent the estimates of h 2 for the sire half‐sibs (narrow‐sense heritability), dam full‐sibs, and combined (sires and dams), respectively (Liu, Chang, Xiang, & Cao, ).…”

Section: Methodsmentioning

confidence: 99%

Heritability estimates for nutritional quality‐related traits of the Pacific oyster, Crassostrea gigas

Sheng

Zhang

et al. 2019

J World Aquaculture Soc

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Pacific oysters, Crassostrea gigas, are the most abundantly harvested shellfish in the world and are ecologically significant. The content of nutrients, including protein, glycogen, lipid, zinc (Zn), and selenium (Se), is important for oyster meat quality, but heritability estimates of such traits have rarely been reported. In this study, 64 full‐sib families were generated using a nested mating design. Finally, 18 full‐sib families, of which there were nine half‐sib families, with each containing 2 full‐sib families, were sampled for heritability estimates. The narrow‐sense heritabilities of glycogen, protein, lipid, Zn, and Se contents were 0.29 ± 0.02, 0.38 ± 0.02, 0.58 ± 0.08, 0.02 ± 0.02, and 0, respectively. Negative genetic correlations existed between both glycogen and protein content (−0.95 ± 0.004) and between lipid and protein content (−0.59 ± 0.05), whereas a positive correlation was observed between lipid and glycogen content (0.16 ± 0.06). Weak genetic and phenotypical correlations (r = 0–0.2) were observed between shell height and nutritional quality traits. These data demonstrated that glycogen, protein, and lipid content can be chosen in a selective breeding program, but glycogen and lipids cannot be selected together with protein. Furthermore, performing indirect selective breeding for quality traits by selecting traits related to growth is impossible. This study provides information for the development of breeding strategies for oyster quality traits.

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“…Based on previous studies showing that the heritabilities of growth traits in S. intermedius are moderate to high [13,14], selective breeding programs for S. intermedius have been conducted in China since 2004. After four generations of selection, the growth traits and gonad quality of S. intermedius have been greatly improved.…”

Section: Introductionmentioning

confidence: 99%

Family Growth and Survival Response to Two Simulated Water Temperature Environments in the Sea Urchin Strongylocentrotus intermedius

Chang

Tian

Zhang

et al. 2016

IJMS

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Heat tolerance is a target trait in the selective breeding of the sea urchin Strongylocentrotus intermedius, as it plays an important role in the survival and growth of cultured S. intermedius during summer. We investigated family growth and survival response to two temperature treatments to evaluate the genotype by temperature interaction (GEI) in the family selection of S. intermedius. Sea urchins from 11 families were exposed to two simulated water temperature environments—high temperature (HE) and control temperature (CE)—for 12 months, with each experiment divided into four periods (P1, stress-free period I; P2, stress-full high period; P3, stress-response period; and P4, stress-free period II) based on the temperature changes and the survival. Test diameter (TD), body weight (BW), and survival rate (SR) in HE and CE were measured monthly. Effects of family, temperature, and family-temperature interaction on TD, BW, SR, and specific growth rate (SGR) for BW were examined. In CE, BW differed significantly between families in P2, P3, and P4, while TD differed significantly between families in P3 and P4 (p < 0.05). In HE, family had significant effects on BW in P4, and on TD in P3 and P4, while temperature had significant effects on SR, TD, and BW in P3 and P4 (p < 0.05). GEI effects were not significant for TD or BW; however, family ranking changes revealed the existence of GEI in SR. The GEI results indicate the necessity of applying family selection in CE and HE for SR, but not for TD or BW. These results may provide a guide for aquaculture and selective breeding of S. intermedius under temperature pressure.

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Estimates of genetic parameters for growth traits of the sea urchin, Strongylocentrotus intermedius

Cited by 31 publications

References 20 publications

Growth rates are related to production efficiencies in juveniles of the sea urchinLytechinus variegatus

Growth rates are related to production efficiencies in juveniles of the sea urchinLytechinus variegatus

Heritability estimates for nutritional quality‐related traits of the Pacific oyster, Crassostrea gigas

Family Growth and Survival Response to Two Simulated Water Temperature Environments in the Sea Urchin Strongylocentrotus intermedius

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