Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 15 of 15 for “"Lumbricus terrestris"”.
-
Bacterial Challenge in Lumbricus Terrestris: A Terrestrial Invertebrate Immunotoxicity Model.
… assay was developed utilizing the earthworm, Lumbricus terrestris, in order to assess potential immunotoxic effects from exposure to specific polychlorinated biphenyl congeners. Earthworms were inoculated with Aeromonous hydrophila, establishing a 10-day LD50. In vitro assays for effects of …
-
Chemesthesis in the Earthworm, Lumbricus terrestris: The search for TRP Channels
… channels in earthworms. Earthworms, including Lumbricus terrestris, aerate and enrich soil providing a suitable habitat for plants. Hence, chemicals in the soil which repel earthworms could have deleterious effects on plant growth. Allyl isothiocyanate, a prototypical TRPA1 agonist, has been …
-
Influence of copper on resistance of Lumbricus terrestris to bacterial challenge
Earthworms, Lumbricus terrestris, were challenged orally and intracoelomically with two bacterial species, Aeromonas hydrophila and Pseudomonas aeruginosa, and mortality rates were observed. Neither were found to be particularly pathogenic at injected doses of up to 108 bacteria per earthworm. The …
-
The Potential of Coelomocyte Chemotaxis as an Immune Biomarker in the Earthworm, Lumbricus terrestris
… and chemotatic, were examined in the earthworm Lumbricus terrestris. Coelomocyte random migration patterns towards non-stimulatory, non-chemotatic solutions were described. Migration responses to immunostimulatory agents lipopolysaccharides (LPS), N-formly-methionyl-leucyl-phenylalanine (FMLP), …
-
Aspects of Lumbricus Terrestris L. dispersal, distribution and intraspecific interactions in field and laboratory investigations
… and ecology of even common species, such as Lumbricus terrestris. This study aimed to examine aspects of adult, immature and hatchling L. terrestris dispersal, distribution and intraspecific interactions through a number of laboratory and field experiments. Results demonstrated that …
-
An investigation into the growth and reproduction of the earthworm <i>Lumbricus terrestris</i> L. under controlled environmental conditions
… earthworms for soil amelioration projects. <i>Lumbricus terrestris</i>, whose behaviour is well documented, was chosen. <br></br><br></br> The scientific literature was used to identify points within the life cycle of this earthworm where manipulation of conditions might lead to increased rates …
-
The Effects of Musical Intervals from Consonant to Dissonant on the Neural Activity of Earthworms
… In this study, the ventral nerve cord of <em>Lumbricus terrestris</em> was exposed to six dichotic intervals in the form of vibrations through a bass actuator. Nerve activity was recorded for amplitude (mV), duration (ms), and maximum depolarization (mV) of the action potential. There was no …
-
Chemically-mediated prey responses: invasive brook stickleback induced changes in behavior and life history of larval long-toed salamanders
… A. macrodactylum or a null-diet of earthworms (Lumbricus terrestris), and measured subsequent changes in A. macrodactylum behavior. A. macrodactylum decreased activity in response to their native predators, and to a greater degree if the predators were fed A. macrodactylum. Larvae increased …
-
Interactions of insecticides, entomopathogenic fungi, and earthworms as they relate to white grub IPM in turfgrass systems
… caused significantly higher mortality to adult Lumbricus terrestris L. earthworms than untreated control consistently. When applied as a drench to turfgrass in spring, summer, and fall, none of the insecticides significantly reduced the earthworm densities compared with a water control.
-
Interactions with earthworm communities: a laboratory-based approach with potential applications for soil restoration
… caliginosa (Savigny), Aporrectodea longa (Ude), Lumbricus rubellus (Hoffmeister) and Lumbricus Terrestris (Linnaeus)) under laboratory conditions. Cultures were initially maintained under optimal environmental conditions. Selected environmental variables (e.g food poison, food particle size and …
-
Mikrobielle Kohlenstoff- und Stickstofftransformationen im Verdauungstrakt von Regenwürmern (Oligochaeta)
… entlang des Verdauungstrakts von Lumbricus terrestris mit den mikrobiellen C- und N-Transformationen in Verbindung zu setzen sowie metabolisch aktive und Glucose-verwertende Bacteria im Verdauungstraktinhalt zu identifizieren. Die in Neuseeland eingeführten Arten Lumbricus rubellus …
-
Denitrification, Dissimilatory Nitrate Reduction, and Methanogenesis in the Gut of Earthworms (Oligochaeta): Assessment of Greenhouse Gases and Genetic Markers
… eugeniae), Germany (Aporrectodea caliginosa, Lumbricus terrestris, Lumbricus rubellus), and New Zealand (Octochaetus multiporus) on gene and partly on transcript levels. Potential denitrifiers and methanogens were isolated and enriched from earthworm gut contents, respectively. Sequences of …
-
Enhanced vermiremediation of hydrocarbon contaminated land using biosurfactant: an integrated approach
… vermiremediation using anecic earthworm species (Lumbricus terrestris) and epigeic species (Eisenia hortensis) and studies the joint impact of PAHs and biosurfactant on the biochemical processes in both species by examining the monooxygenase activities (EROD and MROD activity of cytochrome P450 …
-
Earthworms in the Urban Environment: Can Population Augmentation Improve Urban Soil Properties?
Urban forests perform essential ecological functions, and their performance is dependent on soil quality, which is often degraded by human activity. Because earthworms play a key role in soil health, augmenting earthworm populations in urban soils may improve tree performance. However, we know very …