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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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International Journal of Industrial Entomology
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Journal DOI :
Korean Society of Sericultural Science
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Volume & Issues
Volume 27, Issue 2 - Dec 2013
Volume 27, Issue 1 - Sep 2013
Volume 26, Issue 2 - Jul 2013
Volume 26, Issue 1 - Mar 2013
Selecting the target year
Yield Gap Analysis of Mulberry Sericulture in Northwest India
Bhatia, Narendra Kumar ; Yousuf, Mohammad ; Nautiyal, Raman ;
International Journal of Industrial Entomology, volume 27, issue 1, 2013, Pages 131~141
DOI : 10.7852/ijie.2013.27.1.131
At the interface of reducing agricultural income and increasing unemployment in agrarian economy of rural India, this article summarizes and evaluates the state of mulberry sericulture in northwest India, which includes Himachal Pradesh, Punjab, Rajasthan, Uttarakhand, and Uttar Pradesh. In
plan period (2007-2012), there was an addition of 6 196 ha (217.09 %) of mulberry acreage at annual linier growth rate of 33.44%. However, total silk production could increase only by 54.64 MT (78.57%) at annual linier growth rate of 15.59 %, due to 43.93% (10.82 kg/ha) reduction in silk productivity at negative growth rate of -13.46%, annually. And now, average raw silk productivity in north-western states of India remains at 13.81 kg/ha, which is lower by 452.93 % (76.36 kg) in comparison to the national average of 100.90 kg/ha. Paper summaries the reasons for increasing cocoon yield gap at farmer's level and discuss the ways and means to increase raw silk productivity to improve the livelihood delivery of mulberry sericulture in northwest India.
Population Genetic Structure of the Bumblebee, Bombus ignitus (Hymenoptera: Apidae), Based on Mitochondrial COI Gene and Nuclear Ribosomal ITS2 Sequences
Oh, Hyung Keun ; Yoon, Hyung Joo ; Lee, Joo Young ; Park, Jeong Sun ; Kim, Iksoo ;
International Journal of Industrial Entomology, volume 27, issue 1, 2013, Pages 142~158
DOI : 10.7852/ijie.2013.27.1.142
The bumblebee, Bombus ignitus (Hymenoptera: Apidae), is a valuable natural resource that is widely utilized for greenhouse pollination in South Korea. Understanding the magnitude of genetic diversity and geographic relationships is of fundamental importance for long term preservation and utilization. As a first step, we sequenced a partial COI gene of mitochondrial DNA (mtDNA) corresponding to the "DNA barcode" region and the complete internal transcribed spacer 2 (ITS2) of nuclear ribosomal DNA from 88 individuals collected in nine South Korean localities. The complete ITS2 sequences were longest among known insects, ranging in size from 2,034 bp ~ 2,052 bp, harboring two duplicated 112-bp long repeats. The 658-bp long mtDNA sequences provided only six haplotypes with a maximum sequence divergence of 0.61% (4 bp), whereas the ITS sequences provided 84 sequence types with a maximum sequence divergence of 1.02% (21 sites). The combination of the current COI data with those of published data suggest that the B. ignitus in South Korea and China are genetically a large group, but those in Japan can be roughly separated into another group. Overall, a very high per generation migration ratio, a very low level of genetic fixation, and no discernable hierarchical population were found to exist among the South Korean populations of B. ignitus, which suggests panmixia. This finding is consistent with our understanding of the dispersal capability of the species.
Functional analysis of Bombyx mori Decapentaplegic gene for bone differentiation in a mammalian cell
Park, Seung-Won ; Goo, Tae-Won ; Choi, Gwang-Ho ; Kang, Seok-Woo ; Kim, Sung-Wan ; Kim, Seong-Ryul ;
International Journal of Industrial Entomology, volume 27, issue 1, 2013, Pages 159~165
DOI : 10.7852/ijie.2013.27.1.159
Bone morphogenetic proteins (BMPs) belong to the transforming growth factor (TGF-
) superfamily and are involved in osteoblastic differentiation. The largest TGF-
superfamily subgroup shares genetic homology with human BMPs (hBMPs) and silkworm decapentaplegic (dpp). In addition, hBMPs are functionally interchangeable with Drosophila dpp. Bombyx mori dpp may induce bone formation in mammalian cells. To test this hypothesis, we synthesized the 1,285-base pairs cDNA of full-length B. mori dpp using total RNAs obtained from the fat body of 3-day-old of the
instar larvae and cloned the cDNA into the pCEP4 mammalian expression vector. Next, B. mori dpp was expressed in C3H10T1/2 cells. The target cells transfected with the pCEP4-Bm dpp plasmid showed biological functions similar to those of osteogenic differentiation induction growth factors such as hBMPs. We determined the relative mRNA expression rates of Runt-related transcription factor 2 (RUNX2), osterix, osteocalcin, and alkaline phosphatase (ALP) to validate the osteoblast-specific differentiation effects of B. mori dpp by performing quantitative real-time RT-PCR. Interestingly, mRNA expression levels of the 3 marker genes except RUNX2, in cells expressing B. mori dpp were much higher than those in control cells and C3H10T1/2 cells transfected with pCEP4. These results suggested that B. mori dpp signaling regulates osterix expression during osteogenic differentiation via RUNX2-independent mechanisms.
Forest Insect Industry in Collaborative Forest Management: An Overview
Bhatia, Narendra Kumar ; Yousuf, Mohammad ;
International Journal of Industrial Entomology, volume 27, issue 1, 2013, Pages 166~179
DOI : 10.7852/ijie.2013.27.1.166
In India, forest based insect enterprises has never been linked up with any forest management activity, either as a forest conservation strategy or to reduce the poverty in forested area. This investigation indicated that when forest dependent people are associated with forest insect industry (FII) like forest sericulture, lac culture or apiculture; this income generating activity links livelihood with forest conservation, and generates a viable model of collaborative forest management (CFM). In this model different stakeholders work together as a coherent entity for unified goal of managing the forest for well-being of the poor people in fringe areas. Article summaries and evaluates the prospect of India specific forest insect industry, and discusses how and to what extent integration of FII could be a viable livelihood component in CFM to conserve the forest and insect biodiversity. We analysed a case study on forestbased rearing of tropical tasar silkworm rearing in Central India from CFM perspective. Arguments in this communication are intended to provide forest managers and policy-makers with necessary input to consider location specific FII in CFM mode to provide a continuous source of small income to forest dependent people to ensure long lasting success of their forest management endeavours.
Effect of Extraction Time on the Rheological Properties of Sericin Solutions and Gels
Yoo, Young Jin ; Um, In Chul ;
International Journal of Industrial Entomology, volume 27, issue 1, 2013, Pages 180~184
DOI : 10.7852/ijie.2013.27.1.180
Recently, silk sericin has attracted the attention of researchers owing to its useful properties as a biomaterial including 1) good wound healing and cell activities, 2) fast gelation character, and 3) high water retention property. In the present study, silk sericin was prepared using different extraction times in hot water and the effect of extraction time on the rheological properties of sericin solutions and gels was examined. It was found that the production yield of sericin increased with extraction time. The shear viscosity of sericin solutions and gels decreased with increasing extraction time due to a decrease in sericin molecular weight. When the sericin solution transformed to a gel, the viscosity increased and the shear thinning behavior was more evident. In addition, the shear stress measurements indicated that the slip between the sericin samples and the measuring plate of the rheometer was increased by the gelation of sericin. The compression strength of sericin gel could be increased remarkably (by more than 100 fold) by preparation using the freezing and thawing method.
Description of Nearly Completed Mitochondrial Genome Sequences of the Garden Chafer Polyphylla laticollis manchurica, Endangered in Korea (Insecta: Coleoptera)
Kim, Min Jee ; Kim, Ki-Gyoung ; Kim, Iksoo ;
International Journal of Industrial Entomology, volume 27, issue 1, 2013, Pages 185~202
DOI : 10.7852/ijie.2013.27.1.185
In this study, we present the nearly complete mitogenome sequences of the garden chafer, Polyphylla laticollis manchurica, which is listed as an endangered species in Korea. The P. l. manchurica mitogenome, which includes unfinished whole A+T-rich region and a partial srRNA was 14,473-bp long, possessing typical sets of genes (13 PCGs, 22 tRNA genes, and 2 rRNA genes). Gene arrangement of the P. l. manchurica mitogenome was identical to the common one found in the majority of insects. The 5 bp-long motif sequence (TAGTA) that has been suggested to be the possible binding site for the transcription termination peptide for the major-strand was also found in the P. l. manchurica mitogenome between
(UCN) and ND1. The start codon for COI gene and ATPase8 was designated as a typical TTG. All tRNAs of the P. l. manchurica showed a stable canonical clover-leaf structure of other mt tRNAs, except for
(AGN), DHU arm of which could not form stable stemloop structure. As has been previously determined, the high A/T content was unanimously observed in P. l. manchurica in terms of A/T bias in the third codon position (73.5%) compared with the first (66.4%) and second codon position (66.2%). The PCGs encoded in major-strands are slightly T-skewed, whereas those of the minor-strand are A-skewed, indicating strand asymmetry in nucleotide composition in the Coleoptera including P. l. manchurica.
Recovery of Silk Sericin from Soap-Alkaline Degumming Solution
Yang, Yesol ; Lee, Sang Mi ; Lee, Han Sol ; Lee, Ki Hoon ;
International Journal of Industrial Entomology, volume 27, issue 1, 2013, Pages 203~208
DOI : 10.7852/ijie.2013.27.1.203
Sericin is usually abandoned after the degumming process. However, it could be a valuable bioresource if an economically efficient recovery process could be set up. In this study, sericin was recovered directly from the degummed waste solution by adding calcium chloride, which induced the precipitation of the surfactant, sodium oleate, by charge interaction. The recovery yield was maximum when 10% of calcium chloride was added. Further increase in the calcium chloride concentration induced the precipitation of sericin. The recovered sericin had a molecular weight distribution similar to that of the hot-water-extracted sericin; but some highmolecular- weight sericin could not be recovered. The secondary structure and amino acid composition of the recovered sericin were similar to those of conventional hot-water-extracted sericin. We expect that sericin recovered from the degummed waste solution could be an alternative to the hot-water-extracted sericin, which is widely used in various applications.
The Effect of Silk Membrane Plus 3% 4-hexylresorcinol on Guided Bone Regeneration in a Rabbit Calvarial Defect Model
Seok, Hyun ; Lee, Sang-Woon ; Kim, Seong-Gon ; Seo, Dong-Hyun ; Kim, Han Sung ; Kweon, Hae Yong ; Jo, You-Young ; Kang, Tae Yeon ; Lee, Myung-Jin ; Chae, Weon-Sik ;
International Journal of Industrial Entomology, volume 27, issue 1, 2013, Pages 209~217
DOI : 10.7852/ijie.2013.27.1.209
The objective of this study was to evaluate the bone regeneration capability of silk membrane plus 3% 4-hexylresorcinol (3% 4-HR plus SM) in a rabbit calvarial defect model. Twenty New Zealand white rabbits were used in this study. Bilateral round shaped defects were created in the parietal bone (diameter: 8.0 mm). And the defects were covered with (1) 3% 4-HR plus SM, (2) collagen membrane (CM), (3) no graft material. After surgery, the animals were sacrificed at 4 weeks and 8 weeks. Bone regeneration was analyzed in each section by micro-computerized tomography (
-CT). And Hematoxylin and eosin stains were used for histological analysis. As measured by
-CT analysis 4 weeks after surgery, the average of new bone formation in animals treated with 3% 4-HR plus SM was greater than that of animals treated with CM. and the difference was statistically significant. And well organized lamella bones were observed in the histological view of the 3% 4-HR plus SM group. Therefore, more bone regeneration was seen in animals treated with 3% 4-HR plus SM than in those treated with CM or uncovered control.