Relevant bibliographies by topics / Muga silkworm

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Academic literature on the topic 'Muga silkworm'

Author: Grafiati
Published: 18 May 2024

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Journal articles on the topic "Muga silkworm"

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Sarkar, B. N., Abhishek Singh, L. Guha, M. Majumdar, and H. Hridya. "Morphological Variation of Antheraea assamensis Helfer upon Semi-domestication: A Study on Rearing, Disease Incidence and Seed Production Performance." Journal of Experimental Agriculture International 45, no. 5 (March 24, 2023): 24–32. http://dx.doi.org/10.9734/jeai/2023/v45i52117.

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Muga silkworm is multivoltine and primarily feeds on two primary food plants Som (Persea bombycina King. syn. Machilus bombycina) and Soalu (Litsea polyantha Kost. syn. Litsea monopetala). Muga silkworm Antheraea assamensis (n=15) is a semi-domesticated silk moth mentioned in literature as early 1662 BC. In its annual life cycle there are six crops of cultivated muga silk worm whose nomenclature is based on the local Assamese names of month. By virtue of the narrow ecological distribution of host food plant Antheraea assamensis is confined to only Assam and North East state of India. Empirical observations show that the population is declining due to depletion of natural habitat and lack of genetic variability among population. The wild muga silkworm which is tri or tetra voltine in nature is also found nearby forest area of human habitat in different host plant in N E state of India. A stock of wild muga silkworm collected from the nearby area of Nongpoh and Mendipathar Meghalaya. reared and maintained in muga farm and grainage activities of both wild and cultivated muga were conducted for comparative study. Details of morphology, economic characters and disease occurrence of wild and cultivated muga was studied for future improvement and breed development and also for future strategy of muga silkworm. The morphology of wild muga silkworm are little variant than cultivated muga and economic characters i.e. fecundity of wild muga was recorded 220 - 227 nos. in against the fecundity of cultivated muga observed 120-170 nos. and one gram total numbers of egg contain 120 -135 nos in wild muga in against 134 -145 nos.in cultivated muga. Average cocoon weight wild muga cocoon is ♂= 5.80 g & ♀= 6.60 g in against average cocoon weight ♂= 5.10 g & ♀= 5.54 g in cultivated muga silkworm. Average shell weight ♂= 0.51 g & ♀= 0.60 g in wild muga silkworm and average shell weight ♂= 0.43 g & ♀= 0.51 g in cultivated muga silkworm were recorded. Study revealed that the fecundity, weight of eggs, cocoon weight and shell weight are higher in wild muga silkworm than cultivated muga silkworm. Thereafter it is found that only protozoon disease was reported in wild muga silkworm and other disease i.e. Flacherie, Grasserie, Muscardine was not reported in wild muga silkworm. The mono race muga have no high yielding breed or hybrid and hence breeding programme between wild and cultivated muga may be carried out to get more heterosis, vigourity and yield enhancement.
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Saicharan, Dharavath, Ravi Kumara R, Lopamudra Guha, and Kartik Neog. "Impact of Natural and Mechanical Mating on Fecundity and Egg Retention in Muga Silkworm, Antheraea assamensis (Lepidoptera: Saturniidae)." Journal of Experimental Agriculture International 46, no. 5 (April 6, 2024): 563–68. http://dx.doi.org/10.9734/jeai/2024/v46i52411.

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Lepidopteran muga silkworm Antheraea assamensis belonging to Saturnidae is an economically important insect geographically endemic to Assam and the northeastern region of India. Like any other insect species, oviposition is one of the most vital aspects of A. assamensis as it allocates the majority of its energy during its lifecycle. Muga silkworm seed production technology has still not been studied much in detail. The demand for silkworm seeds rises during the commercial rearing season in the region, Central Silk Board has established seed production centres to cater for the demand of the sericulture industry. The number of seed cocoons processed for commercial seed production is 1.5-2.5 lakhs per annum. Muga silkworm emergence pattern is asynchronous, no. of male and female moths is not equal during operations. A. assamensis is nocturnal in habit, and emergence and coupling take place at night. Due to the asynchronous pattern of emergence, it is quite often that female moths run out of mates in the seed production centres. Due to the depleting number of potential male mates, the mating will be done mechanically by putting male female moths in a bamboo box to save the time and energy of silk moths. So, an experiment was conducted to study the difference in fecundity between naturally mated and mechanically mated muga silkworms and its impact on mating duration at Silkworm Seed Production Centre, Kaliabari, Boko, Assam during commercial crop (April-May & Oct-Nov) of 2023. The results of the study showed that maximum fecundity was observed in silkworms which are naturally mated with 214±12.08 eggs per female. Whereas, the mechanically mated muga silkworm females showed slightly less fecundity compared to naturally mated females with 203.2±12.77 eggs per female. The results on egg retention showed a clear difference with 18.6±4.77 and 16.6±8.64 eggs per female in natural and mechanical mating, respectively. The slightest reduction in fecundity and increased egg retention in female moths might be due to the impact of mechanical mating on mating duration which reported only 5.5±1.29 hrs, whereas natural mating facilitated a higher mating duration with 8.2±1.30hrs, respectively. This study showed the significance of mating type (natural and mechanical) and its impact on fecundity and egg retention of muga silkworm.
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K N, Suhas. "Cocoon Care : Transformative Monitoring For Sericulture." INTERANTIONAL JOURNAL OF SCIENTIFIC RESEARCH IN ENGINEERING AND MANAGEMENT 08, no. 05 (May 14, 2024): 1–5. http://dx.doi.org/10.55041/ijsrem33908.

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Sericulture is the process of cultivating silkworms and extracting silk from them. The caterpillars of the domestic silk moth (also called „Bombyx Mori‟) are the most commonly used silkworm species in sericulture. Other types of silkworms (such as Eri, Muga, and Tasar) are also cultivated for the production of „wild silks‟. Silk is known as the queen of textiles due to its softness, durability, and luster. Furthermore, the silk fibers provide characteristics that are superior toany other type of fiber (e.g., water absorbency, heat resistance, dyeing efficiency, and luster). This textile is obtained from cocoons spun by larvae known as silkworm (Bombyx mori), which were discovered in China between 2600 and 2700 BC. The process of silk production is known as sericulture, beginning with the rearing of the silkworm1
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Singh, Abhishek, Vikram Kumar, M. Majumdar, Lopamudra Guha, and Kartik Neog. "A Comprehensive Review of Insect Pest Management in Muga Silkworm (Antheraea assamensis Helfer): Current Scenario and Future Prospects." Journal of Experimental Agriculture International 46, no. 5 (March 7, 2024): 47–55. http://dx.doi.org/10.9734/jeai/2024/v46i52355.

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Muga silkworm (Antheraea assamensis Helfer), renowned for its natural production of prized golden silk, is native to Assam and adjacent regions in North-Eastern India. However, outdoor rearing of Muga silkworms exposes them to environmental fluctuations year-round, resulting in significant crop losses due to insect pests. Notably, pre-seed crops (Aherua and Jarua) and seed crops (Chotua and Bhodia) experience significantly higher losses compare to commercial crops (Jethua and Kotia). This paper presents a thorough analysis of insect pests impacting Muga silkworm rearing, classified according to activity periods and intensity of attacks. Primary insect pests include Exorista sorbillans (Uzi fly), Apanteles glomeratus (Brachonid fly), ants and wasps. Uzi fly inflicts damage during winter (November to February), primarily affecting 4th and 5th instar Muga larvae, leading to substantial losses during cocoon harvest in March-April, jeopardizing seed production for subsequent Jethua (April-May) commercial crops. Apanteles glomeratus and ants pose threats during summer. Vespa orientalis (wasp) causes damage to late instars from April to September. Chemical control methods are discouraged due to their adverse effects on silkworms. Therefore, urgent research into environmentally sustainable pest management strategies tailored to Muga rearing's specific needs and limitations are warranted. This review synthesizes detailed descriptions of identified pests, challenges in insect pest management, and discusses various mitigation strategies, offering insights into the biology of major insect pests affecting Muga silkworms and evaluating the effectiveness of different pest management approaches.
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Choudhury, Arundhati, Archana Yadav, Bala G. Unni, and Dipali Devi. "Effect of Partially Purified Protease of Pseudomonas aeruginosa Strain AC-3 on Antheraea assama Westwood Larvae." Journal of Entomological Science 40, no. 2 (April 1, 2005): 197–205. http://dx.doi.org/10.18474/0749-8004-40.2.197.

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The protease released by Pseudomonas aeruginosa strain AC-3, a causal organism of flacherie disease in Antheraea assama Westwood silkworms, was characterized and its activity against muga silkworm larvae was assessed in laboratory studies. When grown in casein broth maximum protease production occurred when the strain was cultivated for 60 h. This protease was partially purified by acetone precipitation and subjected to SDS-PAGE. Its molecular weight was approximately 35,000 da. The partially purified protease reduced larval survivability in vivo. The hemolymph protein profile revealed an apparent detrimental effect of the protease on biologically important proteins of silkworm larvae.
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Singh, Ningthoujam Tiken, Harjeet Singh, and Brajendra Choudhury. "Altitude variation and muga silkworm rearing." Indian Journal of Entomology 81, no. 4 (2019): 945. http://dx.doi.org/10.5958/0974-8172.2019.00140.8.

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G. Swathiga, G. Swathiga, S. Manimegalai S. Manimegalai, and E. Arasakumar E. Arasakumar. "Growth Attributes of Eco Races of Eri Silkworm, Philosamia Ricini Donovan in the Western Zone Conditions of Tamil Nadu." Current Agriculture Research Journal 10, no. 3 (January 5, 2023): 312–19. http://dx.doi.org/10.12944/carj.10.3.14.

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One of the most economic exploitation, widely cultivated, and financially viable non-mulberry silkworms is the eri silkworm (Philosamia ricini). The feeds that eri silkworms consume have a significant impact on their yield and silk production. A study was conducted to assess the growth characteristics of the eco races of the eri silkworm in the circumstances of western region of Tamil Nadu. The Central Muga and Eri Research Institute in Jorhat, Assam provided the eco races of eri silkworm. Three replications of the Completely Randomized Design (CRD) were used to set up the treatments. By feeding worms with castor leaves in the cellular rearing method, the growth characteristics of eco races of eri silkworm, specifically the larval parameter and cocoon parameter, were examined. Among the eco races of eri silkworm in comparison with standard F1 hybrid, the eco race Jonai recorded the maximum growth attributes such as larval weight (7.09 g), cocoon weight (3.93 g), shell weight (0.66 g), shell ratio, ERR (16.78 %) which was on par with F1 hybrid followed by Khanapara and Titabar. The least was observed in Barpathar and Adogiri. This study reveals that among ten eco races of eri silkworm, the eco race Jonai recorded performed well in western zone condition of Tamil Nadu and it can be commercially reared in alternative to Commercial F1 breed.
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Sharmila, Banu G., and R. Latha. "Extraction and quantification of 1-Deoxynojirimycin in Silkworm during metamorphosis and moulting stages." Research Journal of Biotechnology 18, no. 1 (December 15, 2022): 15–21. http://dx.doi.org/10.25303/1801rjbt15021.

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The contents of 1-deoxynojirimycin (1-DNJ) in the silkworm, Bombyx mori, were examined using reverse-phase high-performance liquid chromatography at various developmental stages. Mulberry leaves and silkworms naturally contain 1-deoxynojirimycin (DNJ). Although the contents of DNJ and its actions in mulberry leaves have been studied for decades, the content of DNJ in silkworms and its use have received less attention. DNJ was extracted and quantified in a variety of silkworms including Tasar silkworms, Muga silkworms, Eri silkworms and Mulberry silkworms. Group VI silkworms are more active than the others. Then, for male and female larvae of silkworm species, the variation in DNJ contents was examined. Silkworm larvae's 1-DNJ concentration varies greatly depending on their developmental stage. Male larvae (133.25 ± 11.45 mg/100g) and female larvae (129.65 ± 10.25 mg/100g) are substantially higher in both male and female mulberry silkworms. The larvae of the 3rd and the 5th day were used to calculate the DNJ. Male larvae had a higher 1-DNJ accumulation efficiency than females and there was also a significant difference between silkworm strains. The current findings demonstrate that 1-DNJ tissue distribution is substantially increased in the blood, intestinal juice and the alimentary canal while none was found in the silk gland. Furthermore, 1-DNJ was not detected in silkworms fed with an artificial diet devoid of mulberry leaf powder. This shows that silkworms get 1-DNJ from mulberry leaves; they could not make it on their own. During the larval stage, the storage and excretion of 1-DNJ fluctuate. 1-DNJ was not found in newly hatched larvae and it was primarily accumulated during the early and middle stages of each instar, before being expelled at later stages. Furthermore, 1-DNJ can be extracted from larval excrement, making it ideal for the development of 1-DNJ-related goods.
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Singh, P., Babu Lal, and P. Das. "studies on the differences in the loss of moisture from the harvested Som leaves." Journal of Non-Timber Forest Products 9, no. 1/2 (June 1, 2002): 37–42. http://dx.doi.org/10.54207/bsmps2000-2002-bq3yl6.

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Moisture content of the harvested Som leaves plays a vital role in successful indoor rearing of muga silkworm Antheraea assama. Considerable delay is noticed between harvesting of leaf and feeding to silkworm during Chotua (February to March) and Aherua (June-July) muga seed crops during indoor rearing. After harvest, the leaves lose their moisture gradually. The loss of moisture during 9.00 A.M. to 4.00 P.M. was determined in the 8 morphotypes of Som (Machilus bombycina). The loss of moisture was least (6.19%) in morphotype M (5) and maximum (24.75%) in M (1), in others it was 9.12% in M (2); 10.57% in M (3); 7.88% in M (4); 6.12% in M (6); 6.36% in M (8) and 7.04% in M (7). Hence M (5) morphotype is recommended for the use in indoor rearing of muga silkworm. Significant differences were also observed among these morphotypes with regard to the leaf area and stomatal numbers. The morpho-anatomical features of the leaf were found to influence the degree of loss of moisture from the leaves.
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Subrahmanyam, G., R. Das, R. Debnath, M. Chutia, K. M. Ponnuvel, and K. Sathyanarayana. "Characterization of bacterial pathogens in Muga silkworm, Antheraea assamensis Helfer (Lepidoptera: Saturniidae)." Journal of Environmental Biology 44, no. 3(SI) (June 3, 2023): 479–84. http://dx.doi.org/10.22438/jeb/44/3(si)/jeb-07.

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Aim: To identify and characterize the bacterial pathogens associated with bacteriosis in muga silkworm, A. assamensis. Methodology: The mid gut of diseased silkworm, A. assamensis was dissected and bacterial pathogens were cultured. Bacterial pathogens were identified by 16S rRNA gene sequencing. Insect bioassay studies were conducted to understand the pathogenicity of bacterial isolates. Results: Bacterial pathogens were identified as Pseudomonas aeruginosa and Bacillus mycoids. Under laboratory conditions, approximately 70% mortality of A. assamensis larvae was due to P. aeruginosa, while 50% larval mortality was due to B. mycoids. Interpretation: P. aeruginosa was relatively more pathogenic to A. assamensis than B. mycoids. Further, a graph on disease progression was developed to understand the trajectory of bacteriosis in A. assamensis. Key words: Bacteriosis, Disease progression, Muga silkworm, Pseudomonas sp., 16S rRNA sequencing
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Dissertations / Theses on the topic "Muga silkworm"

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Bhattacharyya, Uddalok. "Nutritional ecology of the muga silkworm antheraea assama westwood and efficiency of conversion to economic characters on two major host plants in indoor rearing." Thesis, University of North Bengal, 2008. http://hdl.handle.net/123456789/1564.

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Biswas, Indrajit. "Standardization of seed production technique of muga silkworm (Antheraca assama westwood) in Terai Region of West Bengal." Thesis, University of North Bengal, 2008. http://hdl.handle.net/123456789/1346.

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Das, Debasish. "Studies on some biochemical profiles of muga silkworm, antheraea assama WW (Lepidoptera : Saturniidae) and thin relation to the disease bacteriosis in the Cooch Behar Districts of West Bengal." Thesis, University of North Bengal, 2008. http://hdl.handle.net/123456789/1354.

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Ghosh, Samiran. "Identification of low temperature resistant embryonic stages for improving seed production in muga silkworm, antheraea assama, westwood for cold preservation of eggs." Thesis, University of North Bengal, 2018. http://ir.nbu.ac.in/handle/123456789/2697.

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Book chapters on the topic "Muga silkworm"

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Elumalai, D., P. Mohan raj, R. Ramamoorthy, C. Mohan, and B. Poovizhiraja. "Muga Silkworm Rearing Technology." In Introduction to Non-Mulberry Silkworms, 204–10. CRC Press, 2021. http://dx.doi.org/10.1201/9781003197393-35.

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Elumalai, D., P. Mohan raj, R. Ramamoorthy, C. Mohan, and B. Poovizhiraja. "Morphology Of Muga Silkworm." In Introduction to Non-Mulberry Silkworms, 224–27. CRC Press, 2021. http://dx.doi.org/10.1201/9781003197393-37.

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Elumalai, D., P. Mohan raj, R. Ramamoorthy, C. Mohan, and B. Poovizhiraja. "Rearing of Muga Silkworm, Antheraea Assamensis." In Introduction to Non-Mulberry Silkworms, 228–36. CRC Press, 2021. http://dx.doi.org/10.1201/9781003197393-38.

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Elumalai, D., P. Mohan raj, R. Ramamoorthy, C. Mohan, and B. Poovizhiraja. "Food Plants of Muga Silkworm and Management." In Introduction to Non-Mulberry Silkworms, 187–96. CRC Press, 2021. http://dx.doi.org/10.1201/9781003197393-32.

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Elumalai, D., P. Mohan raj, R. Ramamoorthy, C. Mohan, and B. Poovizhiraja. "Pests And Diseases Of Muga Silkworm And Their Management." In Introduction to Non-Mulberry Silkworms, 240–50. CRC Press, 2021. http://dx.doi.org/10.1201/9781003197393-40.

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Raju, P. J., D. M. Mamatha, and S. V. Seshagiri. "Sericulture Industry." In Environmental and Agricultural Informatics, 366–87. IGI Global, 2020. http://dx.doi.org/10.4018/978-1-5225-9621-9.ch017.

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India has a huge potential for sericulture development unlike other agro industries since sericulture is a unique agro-based industry comprising of several components such as mulberry cultivation, silkworm rearing, silk reeling and other connected activities. Each of these components appear to be independent but closely linked with one another having intricacies of their own. The major activities of these components comprises of mulberry food-plant cultivation to feed the silkworms which spin silk cocoons and reeling the cocoons for unwinding the silk filament for manufacturing silk goods, subjecting them to the process of degumming, bleaching, dyeing, weaving and printing. Thus sericulture industry provides employment to approximately 7.85 million in rural and semi urban areas in India. Of these, a sizeable number belongs to the economically weaker sections of the society, including women. In addition to this, India has the unique credibility of producing all the five known commercial silk viz., mulberry, tropical tasar, oak tasar, eri and muga of which muga with its golden yellow glitter is unique and prerogative of India. Though silk is a luxury item, it is produced by the rural populace and purchased by urban rich, causing money to flow from urban to rural. It also prevents rural people to migrate to urban areas. The United Nation's recent endeavor “Millennium Development Goals” has an eight point programme to make our earth more healthy wealthy and free from inequalities by 2015. Sericulture being a rural and women friendly business aligns well with many of these ideas which are explained in detail in the chapter.
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Elumalai, D., P. Mohan raj, R. Ramamoorthy, C. Mohan, and B. Poovizhiraja. "Muga Silkworms – Biodiversity – Distribution." In Introduction to Non-Mulberry Silkworms, 184–86. CRC Press, 2021. http://dx.doi.org/10.1201/9781003197393-31.

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Elumalai, D., P. Mohan raj, R. Ramamoorthy, C. Mohan, and B. Poovizhiraja. "Processing of Muga Cocoons." In Introduction to Non-Mulberry Silkworms, 237–39. CRC Press, 2021. http://dx.doi.org/10.1201/9781003197393-39.

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Elumalai, D., P. Mohan raj, R. Ramamoorthy, C. Mohan, and B. Poovizhiraja. "Grainage Techniques in Muga Egg Production." In Introduction to Non-Mulberry Silkworms, 211–23. CRC Press, 2021. http://dx.doi.org/10.1201/9781003197393-36.

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Elumalai, D., P. Mohan raj, R. Ramamoorthy, C. Mohan, and B. Poovizhiraja. "Diseases of Muga Food Plant Soalu and Their Management." In Introduction to Non-Mulberry Silkworms, 200–203. CRC Press, 2021. http://dx.doi.org/10.1201/9781003197393-34.

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