Evaluation of economically important traits from sixteen parental strains of the silkworm Bombyx mori L (Lepidoptera: Bombycidae)

Zanatta, Daniela B; Bravo, Juliana Pereira; Barbosa, Joice F; Munhoz, Roxelle Ethienne Ferreira; Fernandez, Maria Aparecida

doi:10.1590/s1519-566x2009000300005

Cited by 36 publications

(19 citation statements)

References 9 publications

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“…This value was lower than the 18.21% reported by Zanatta et al (2009) in a study of other silkworm strains of the same UEM Brazilian Germplasm Bank. On the other hand, Porto et al (2004) observed an average RSP of 16.37%, which is closer to that observed in the present study.…”

Section: Biological and Productivity Analysescontrasting

confidence: 67%

“…RSP is a measurement that includes both CW and CSW, among other factors, and it defines the final value of the cocoon (Zanatta et al, 2009). CW, CSW and RSP represent important economic silkworm traits.…”

Section: Biological and Productivity Analysesmentioning

confidence: 99%

“…Additionally, they are highly heritable, are affected by additive gene action, and allow a better response to selection (Petkov and Nguyenvan, 1987). Zanatta et al (2009) evaluated other strains in the same germplasm bank. Although some values were similar to our results, they observed higher CW values for the HA-A and HA-B strains, 2 Japanese strains that produce long peanut cocoons, higher CSW values for the HA-A, HA-B, C24-A, and M12-B strains and a higher CL value for the HA-A strain.…”

Section: Biological and Productivity Analysesmentioning

confidence: 99%

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Biological and molecular characterization of silkworm strains from the Brazilian germplasm bank of Bombyx mori

Pereira¹,

Munhoz²,

Bignotto³

et al. 2013

Genet. Mol. Res.

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ABSTRACT. Brazil has only one public genetic pool of Bombyx mori strains, which was established in 2005 at Universidade Estadual de Maringá, Maringá, Paraná State. This genetic bank has been maintained, and the strains have been characterized using genetic and morphological tools. The quantitative and qualitative traits, directly or indirectly related to productivity, were evaluated in 14 silkworm strains. In addition to biological and productivity analyses, DNA markers related to susceptibility to the B. mori nucleopolyhedrovirus (BmNPV) were analyzed. BmNPV is a major cause of production loss and is a serious problem for Paraná sericulture. The silkworm strains from diverse geographic origins were found to have different characteristics, including body weight, larval stage duration, cocoon weight, and other biological traits. In terms of productivity, the raw silk percentages were almost uniform, with an overall average of 16.28%. Overall, the Chinese strain C37 gave the best performance in many of the quantitative traits, and it surpassed the other strains in productivity Genetic characterization of Brazilian B. mori germplasm bank traits. Therefore, it can be used as one of the strains that compose the elite germplasm for silkworm breeding programs. Additionally, genetic molecular markers were efficient in discriminating between B. mori strains that had been identified based on their geographical origin. We found that all Japanese strains produced a 400-bp molecular marker that has been associated with susceptibility to BmNPV.

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Section: Biological and Productivity Analysescontrasting

confidence: 67%

Section: Biological and Productivity Analysesmentioning

confidence: 99%

Section: Biological and Productivity Analysesmentioning

confidence: 99%

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Biological and molecular characterization of silkworm strains from the Brazilian germplasm bank of Bombyx mori

Pereira¹,

Munhoz²,

Bignotto³

et al. 2013

Genet. Mol. Res.

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“…Of these, about 2000 strains belong to the B. mori L silkworm. In addition, about 230 gene and locus patterns have been recognized (Yoshido et al 2005;Zanatta et al 2009). …”

Section: Silkworm Genetics: a Brief Reviewmentioning

confidence: 99%

A review on correlation, heritability and selection in silkworm breeding

Hemmatabadi

Seidavi

Gharahveysi

2014

Journal of Applied Animal Research

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Silkworm, Bombyx mori, is one of the most significant insects in silk production as well as in biological studies. The aim of silkworm breeding is to gradually improve economically valuable traits to increase the profits of the sericulture industry. This article reviews the necessity and achievements of research based on genetics and breeding. Some genetic principles in silkworms, along with the goals and outcomes of breeding are reviewed briefly. Selection under different environmental conditions, calculation of breeding values, quantitative and qualitative traits, consanguinity and heritability are also discussed.

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“…mori domestication occurred around 5,000 years ago and currently more than 4,000 silkworm strains (including geographical, inbred and mutant strains) are available worldwide 29–31 . Geographical strains are broadly divided into four main groups: Japanese, Chinese, European and Tropical.…”

Section: Introductionmentioning

confidence: 99%

Differential sensitivity to infections and antimicrobial peptide-mediated immune response in four silkworm strains with different geographical origin

Romoli

Saviane

Bozzato

et al. 2017

Sci Rep

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The domesticated silkworm Bombyx mori has an innate immune system, whose main effectors are the antimicrobial peptides (AMPs). Silkworm strains are commonly grouped into four geographical types (Japanese, Chinese, European and Tropical) and are generally characterised by a variable susceptibility to infections. To clarify the genetic and molecular mechanisms on which the different responses to infections are based, we exposed one silkworm strain for each geographical area to oral infections with the silkworm pathogens Enterococcus mundtii or Serratia marcescens. We detected a differential susceptibility to both bacteria, with the European strain displaying the lowest sensitivity to E. mundtii and the Indian one to S. marcescens. We found that all the strains were able to activate the AMP response against E. mundtii. However, the highest tolerance of the European strain appeared to be related to the specific composition of its AMP cocktail, containing more effective variants such as a peculiar Cecropin B6 isoform. The resistance of the Indian strain to S. marcescens seemed to be associated with its prompt capability to activate the systemic transcription of AMPs. These data suggest that B. mori strains with distinct genetic backgrounds employ different strategies to counteract bacterial infections, whose efficacy appears to be pathogen-dependent.

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Evaluation of economically important traits from sixteen parental strains of the silkworm Bombyx mori L (Lepidoptera: Bombycidae)

Cited by 36 publications

References 9 publications

Biological and molecular characterization of silkworm strains from the Brazilian germplasm bank of Bombyx mori

Biological and molecular characterization of silkworm strains from the Brazilian germplasm bank of Bombyx mori

A review on correlation, heritability and selection in silkworm breeding

Differential sensitivity to infections and antimicrobial peptide-mediated immune response in four silkworm strains with different geographical origin

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