Heritability, genetic correlations and genotype-environment interactions for growth and survival of larvae and post-larvae of the Caribbean scallop, Argopecten nucleus (Mollusca: Bivalvia)

Barros, Judith; Winkler, Federico M.; Velasco, Luz Adriana

doi:10.1016/j.aquaculture.2018.06.047

Cited by 9 publications

(6 citation statements)

References 54 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Survival and growth should be considered collectively in the breeding programme of oysters, and the genetic correlations between survival and growth traits were low in this study, indicating that genes controlling these two traits are most probably different and unlinked. The results essentially agreed with the Barros et al (2018) and Dégremont et al (2007), who studied genetic correlation between SH and survival of A. nucleus and genetic correlation between growth rate and survival of C. gigas, respectively.…”

Section: Genetic and Phenotypic Correlationssupporting

confidence: 88%

“…In Mytilus edulis , the heritability of growth was 0.2–0.8 in larvae and juvenile (Strömgren & Nielsen, 1989). In Argopecten nucleus , the heritability of SL was 0.31–0.69 in larvae and post‐larvae (Barros et al., 2018). Some of the factors that can affect heritability estimations at different ages are the maternal effects and those of common environment (Gjedrem & Baranski, 2009).…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Genetic parameters of growth and survival in the Pacific oyster Crassostrea gigas

Chi

Liu

et al. 2020

Aquac. Res.

View full text Add to dashboard Cite

The Pacific oyster Crassostrea gigas is a representative bivalve mollusc that is widely cultured in the world and is the largest molluscan group cultured in China. In order to assess the feasibility of improving survival of C. gigas through genetic selection, the heritability and genetic correlations for growth and survival traits between different life stages were examined. Genetic parameters were estimated based on intraclass correlations of 49 full-sib families (29 half-sib families) in larvae (4 and 20 days after fertilization) and spat (140 days after fertilization) stages. The heritability for growth traits in larvae and spat was 0.30-0.86 and 0.53-0.59, respectively, and varied with ages. The heritability of survival was low in larvae (0.13 ± 0.05 and 0.17 ± 0.04, respectively for 4 and 20 days after fertilization) but medium (0.39 ± 0.07) in spat, suggesting that selection for increasing spat survival was feasible. The genetic correlation between growth traits within age was medium to high and positive (ranging from 0.47 to 0.96, respectively, between shell length (SL) and shell height (SH) at 20 days and between SL and SH at 140 days after fertilization), suggesting that selection to improve single growth trait will cause positive response in another growth traits in C. gigas. The genetic correlations between survival and growth traits at 140 days were low but positive (ranging from 0.23 to 0.27, respectively, between survival and SH and between survival and SL at 140 days after fertilization), suggesting that selection for survival may not have a negative response in growth. Overall, this study suggests that survival traits should be taken as improving target of next selection breeding programme in C. gigas.

show abstract

Section: Genetic and Phenotypic Correlationssupporting

confidence: 88%

Section: Discussionmentioning

confidence: 99%

Genetic parameters of growth and survival in the Pacific oyster Crassostrea gigas

Chi

Liu

et al. 2020

Aquac. Res.

View full text Add to dashboard Cite

show abstract

“…Brooders were obtained as seed from artificial collectors suspended in the bay area, which were provided by the Instituto de Investigaciones Marinas y Costeras (INVEMAR, Santa Marta). Families were built as described by Barros, Velasco, et al (), Barros, Winkler, et al (), following the protocols for spawning and culture described by Velasco and Barros (, ) and Velasco et al (). Crosses were performed using a nested design, according to which the sperm of one scallop used as male (sire) was used to separately fertilize the oocytes of 2–4 individuals (dams).…”

Section: Methodsmentioning

confidence: 99%

“…Thus, each dam was crossed with only one male and no scallop was simultaneously used as mother and father. The self‐fertilization rate was estimated as the frequency of nonfertilized oocytes that spontaneously initiate embryonic development within 4 hr after spawning in a sample (10 ml) from each individual used as female (Barros, Velasco, et al, ; Barros, Winkler, et al, ; Winkler & Estévez, ).…”

Section: Methodsmentioning

confidence: 99%

“…To date, there is no information about the genetic structure of wild populations of A. nucleus , but the low population densities usually found for this species suggest the existence of high levels of genetic drift and inbreeding, as previously reported for other mollusks such as Haliotis iris (Smith & Conroy, ). This situation could be further exacerbated due to the effects of spontaneous self‐fertilization, which has been estimated at 12% ± 1% on average for reproduction in hatchery (Barros, Velasco, & Winkler, ; Barros, Winkler, & Velasco, ). In Argopecten irradians irradians , it has been estimated that self‐fertilization might be able to reduce the genetic diversity of the population in 10%–40% in just one generation (Zheng, Zhang, Guo, & Liu, ).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Assessing the genetic diversity in Argopecten nucleus (Bivalvia: Pectinidae), a functional hermaphrodite species with extremely low population density and self‐fertilization: Effect of null alleles

Barros

Winkler

Velasco

2020

Ecology and Evolution

View full text Add to dashboard Cite

Argopecten nucleus is a functional hermaphroditic pectinid species that exhibits self‐fertilization, whose natural populations have usually very low densities. In the present study, the genetic diversity of a wild population from Neguanje Bay, Santa Marta (Colombia), was estimated using microsatellite markers, and the effect of the presence of null alleles on this estimation was assessed. A total of 8 microsatellite markers were developed, the first described for this species, and their amplification conditions were standardized. They were used to determine the genotype of 48 wild individuals from Naguanje Bay, and 1,010 individuals derived from the offspring of 38 directed crosses. For each locus, the frequencies of the identified alleles, including null alleles, were estimated using the statistical package Micro‐Checker, and the parental genotypes were confirmed using segregation analysis. Three to 8 alleles per locus with frequencies from 0.001 to 0.632 were detected. The frequencies of null alleles ranged from 0.10 to 0.45, with Ho from 0.0 to 0.79, and He from 0.53 to 0.80. All loci were in H‐W disequilibrium. The null allele frequencies values were high, with lower estimations using segregation analysis than estimated using Micro‐Checker. The present results show high levels of population genetic diversity and indicate that null alleles were not the only cause of deviation from H‐W equilibrium in all loci, suggesting that the wild population under study presents signs of inbreeding and Wahlund effect.

show abstract

Response to selection for growth in an inbred strain of the Pacific oyster Crassostrea gigas

Fang,

Xu,

2023

Aquacult Int

View full text Add to dashboard Cite

Heritability, genetic correlations and genotype-environment interactions for growth and survival of larvae and post-larvae of the Caribbean scallop, Argopecten nucleus (Mollusca: Bivalvia)

Cited by 9 publications

References 54 publications

Genetic parameters of growth and survival in the Pacific oyster Crassostrea gigas

Genetic parameters of growth and survival in the Pacific oyster Crassostrea gigas

Assessing the genetic diversity in Argopecten nucleus (Bivalvia: Pectinidae), a functional hermaphrodite species with extremely low population density and self‐fertilization: Effect of null alleles

Response to selection for growth in an inbred strain of the Pacific oyster Crassostrea gigas

Contact Info

Product

Resources

About