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| Brito Vega, Hortensia. |
| El objetivo del presente trabajo fue estudiar la diversidad bacteriana en el contenido digestivo de la lombriz de tierra endogea Pontoscolex corethrurus. El muestreo de la especie P. corethrurus se realizó en dos localidades de Veracruz, México: Plan de las Hayas, zona ganadera con suelo arcilloso y La Mancha, zona de reserva ecológica y con suelo arenoso. El intestino de las lombrices fue dividido en cuatro secciones (A, B, C y D). Bajo condiciones asépticas, se prepararon diluciones decimales con el contenido intestinal empleando el medio líquido Brain Heart Infusion. Posteriormente, la suspensión del contenido intestinal se sembró en medios específicos. La identificación taxonómica de los aislamientos bacterianos puros se realizó por dos... |
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Palavras-chave: Anisosimbiosis; Lombriz de tierra; Enzimas; Biodiversidad; Earthworm; Enzymes; Biodiversity; Doctorado; Edafología. |
| Ano: 2010 |
URL: http://hdl.handle.net/10521/265 |
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| Yaqub, H.B.. |
| Three meals were formulated from the earthworm (Endrilus eugineae) and maggot (Musca domestica) and fish (Engraulis encrosicolus). These meals were evaluated as a potential replacement for fishmeal. This is because fishmeal could be very expensive at times. The three meals were used in feeding the catfish (Heterobranchus isopterus) fry for 30 days. The study was conducted in 1991 at the Institute of Renewable Natural Resources Farm, University of Science and Technology. Two replicates were done using four hapas in each replicate. Each hapa was stocked with 50 fry and fed. Those in the fourth hapa were not fed to ascertain the effect of supplementary feeding on the growth of the fish. Weight increment was found to be less in the fourth hapa than the... |
| Tipo: Journal Contribution |
Palavras-chave: Renewable natural resource; Catfish; Maggot; Earthworm; Fish meal; Fish meal; Http://aims.fao.org/aos/agrovoc/c_2925. |
| Ano: 1997 |
URL: http://hdl.handle.net/1834/1268 |
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| Domínguez Gamas, Miriam Isela. |
| La investigación de nuevos materiales para la formulación de mezclas que sirvan como sustrato o medio de crecimiento vegetal se ha constituido en una actividad fundamental. El objetivo de este trabajo fue evaluar la capacidad de diferentes tipos de vermicompostas, a fin de establecer su viabilidad como parte de un sustrato, para la siembra de dos variedades de caña de azúcar (CP-722086 y MEX-69290), a nivel de plántula. Se evaluaron, diferentes mezclas de residuos agroindustriales cachaza, bagazo, estiércol de ganado, cascarilla de cacao y biochard, los cuales fueron sometidos a vermicompostaje por 118 días. Al término del proceso se realizaron análisis químicos de las lombricompostas obtenidas, para su caracterización físico-química, en base a la norma... |
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Palavras-chave: Lombriz de tierra; Eisenia fetida; Composta; Vermicomposta; Earthworm; Compost; Vermicompost; Producción Agroalimentaria en el Trópico; Maestría. |
| Ano: 2013 |
URL: http://hdl.handle.net/10521/1854 |
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| Wiethan,Maria MS; Bortolin,Gabriel S; Pinto,Renata S; Silva,Antonio Carlos F. |
| ABSTRACT The study aimed to evaluate the initial development, as well as, the chemical characteristics of lettuce plants grown in substrate with high concentrations of bioagent (trichoderma). A completely randomized design with four replicates was used. The treatments, applied to a substrate composed of a blend of vermicompost and commercial substrate, were established by the following doses of the commercial product ICB Nutrissolo Trichoderma: T1) 0.0; T2) 1.0; T3) 2.0; T4) 4.0; T5) 8.0 and T6) 16.0x1011 conidia kg-1 of product. After inoculation, the substrate was placed in trays, where 50 lettuce seeds were sown on each replication. Plants were thinned after emergency stabilization, maintaining ten seedlings per tray. At 28 days after sowing, the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Lactuca sativa; Trichoderma spp.; Earthworm; Substrate; Emergence; Growth. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362018000100077 |
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| Grigoropoulou,Niki; Butt,Kevin R.; Lowe,Christopher N.. |
| The objective of this work was to evaluate interactions of Lumbricus terrestris juveniles with adults and with inherited burrow systems. An experiment was set up using a two dimensional Evans' boxes microcosm. Adult L. terrestris were added to 16 boxes (one individual per box) and kept in darkness at 17ºC along with eight unoccupied boxes for two months. The adult L. terrestris were removed from eight randomly selected boxes, and L. terrestris juveniles were added (one juvenile per box), composing three treatments with eight replicates: 1, with an adult in an inherited burrow (ABJ); 2, alone in an inherited burrow (BJ); and 3, alone in a previously uninhabited box (J). The proportion of juveniles occupying adult burrows observed was significantly different... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Anecic; Earthworm; Intraspecific interactions. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2009000800025 |
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| Wu,X.M; Yu,Y.L; Li,M; Long,Y.H; Fang,H; Li,S.N. |
| An incubation test was conducted to investigate the effect of aging on bioavailability of chlorpyrifos in soil and to assess the feasibility of chemical extraction techniques for predicting bioavailability of chlorpyrifos in soil. Chlorpyrifos was spiked into sterilized soil and aged in microcosms for up to 120 days. The earthworms were incubated in the spiked soils, at 0, 7, 14, 30, 60, and 120 days after spiking, for a period of 7 days. After exposure, chlorpyrifos concentrations in the earthworm tissues were determined. Change in chemical extractability of soil-chlorpyrifos was measured using a several solvent systems including methanol, methanol-water (9:1), acetone-water (5:3), and water. The results show that chemical extractability and earthworm... |
| Tipo: Journal article |
Palavras-chave: Chlorpyrifos; Residue; Soil; Earthworm; Bioavailability; Prediction. |
| Ano: 2011 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162011000100004 |
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