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Development and silk production by silkworm larvae after topical application of methoprene Scientia Agricola
Miranda,José Ednilson; Bortoli,Sérgio Antonio de; Takahashi,Roque.
Juvenile hormone analogues have been tested as insect growth regulators in silkworm (Bombyx mori), seeking an increment of silk production. These chemical products, when applied in small or moderate rates, promote the extension of the last larval instar. To understand the physiologic consequences on silk production by the silkworm strain C115 x N108, the application of methoprene, a juvenile hormone analogue, was performed to evaluate its effects on larval development and silk production. Methoprene was topically applied 48h after the fourth larval ecdysis, on the dorsal integument of the 2nd thoracic segment of the insects, at seven rates between 0 and 20 ng a.i. Methoprene influenced positively the duration of the fifth instar and the weight gain of the...
Tipo: Info:eu-repo/semantics/report Palavras-chave: Bombyx mori; JHA; Sericulture; Juvenile hormone.
Ano: 2002 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162002000300026
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Demand for inputs in silkworm production: the case of Turkey R. Bras. Zootec.
Özer,Osman Orkan; Top,Berrin Taşkaya.
ABSTRACT The objective of this study was to calculate the price, cross, and Morishima Technical Substitution elasticities for the costs of manpower, supply of mulberry leaves, transportation, heating, and material, all of which play pivotal roles for producers in sericulture. A survey was conducted by face-to-face interviews with 207 farmers within the scope of the study. At the analysis phase of the study, the share equity translog cost model was used. The response of the producers to the production input prices were calculated as inelastic. The strictest demand for an input belongs to mulberry leaves (-0.051) and the highest elasticity for transportation costs (-0.314). Sericulture dependents on workforce and mulberry leaves and this activity in Turkey...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Elasticity; Sericulture; Silkworm subsidies; Translogcost model.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982017001200917
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Método analítico multirresíduo para determinação de inseticidas no Bicho-da-seda (Bombyx mori L). Infoteca-e
SCORZA JUNIOR, R. P.; PORTILHO, I. E. R..
Diante dos crescentes relatos de perdas de produção na sericicultura pela intoxicação e morte do bicho-da-seda por inseticidas aplicados em áreas adjacentes aos sericicultores, torna-se importante a realização de estudos de monitoramento para caracterizar a problemática como subsídio para ações futuras na proposição de soluções. No entanto, para trabalhos de monitoramento, é fundamental possuir um método analítico confiável e validado no laboratório para a matriz alvo. Este trabalho teve como objetivo o desenvolvimento e a validação de um método analítico multirresíduo para identificação e quantificação de 26 inseticidas e produtos de degradação em amostras de bicho-da-seda, utilizando o protocolo QuEChERS e cromatografia líquida de ultraperformance...
Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E) Palavras-chave: Monitoramento ambiental; QuEChERS; Agrotóxico; Sericicultura; Bicho da Seda; Bombyx Mori; Pesticides; Sericulture; Environmental monitoring.
Ano: 2021 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1136504
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Leaf Surface Scanning Electron Microscopy of 16 Mulberry Genotypes (Morus spp.) with Respect to their Feeding Value in Silkworm (Bombyx mori L.) Rearing Chilean J. Agric. Res.
Singhal,B.K; Baqual,M.F; Khan,M.A; Bindroo,B.B; Dhar,A.
Mulberry (Morus spp.) is the only silkworm (Bombyx mori L.) food plant. In Indian sub tropics, S-146 is the only popular and ruling mulberry genotype for silkworm rearing. As a result, mulberry leaf availability is always the limiting factor, and therefore, sub tropics are contributing less than 1% of the country’s total silk production compared with more than 60% under tropical conditions. Besides climatic conditions, this is due to a very limited number of mulberry genotypes available in this region for silkworm rearing. However, in the mean time, 15 mulberry genotypes viz. ‘Tr-10’,‘Chinese White’,‘K-2’,‘Sujanpur...
Tipo: Journal article Palavras-chave: Scanning electron microscopy; Stomata; Trichomes; Idioblasts; Leaf yield; Sericulture.
Ano: 2010 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392010000200001
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Evaluation of economically important traits from sixteen parental strains of the silkworm Bombyx mori L (Lepidoptera: Bombycidae) Neotropical Entomology
Zanatta,Daniela B; Bravo,Juliana P; Barbosa,Joice F; Munhoz,Roxelle E F; Fernandez,Maria A.
The classification and characterization of silkworm strains are important for sericulture, which is supported by the constant development of new hybrids. In this study, 16 parental strains of Bombyx mori L from the germplasm banks of the Universidade Estadual de Maringá - UEM, and Associação dos Criadores de Bicho-da-Seda de Nova Esperança e Regiões Sericícolas do Paraná - ACESP, were evaluated regarding biological and productive traits economically important. The Chinese C122-B and C121-A, and the Japanese HA-A and HA-B strains yielded the highest cocoon weight, which is related to the raw silk percentage. Our data will be useful in breeding programs for the production of superior silkworm strains and hybrids.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Germplasm; Sericulture; Silk.
Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2009000300005
Registros recuperados: 5
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