Biodegradation of Animal Waste by Lumbricus terrestris

Cytodifferentiation during Spermiogenesis in Lumbricus Terrestris

The structural changes during spermiogenesis were studied on developing spermatids in seminal vesicles and receptacles of Lumbricus terrestris fixed in glutaraldehyde-osmium tetroxide and embedded in Epon-Araldite. The centriole plays a prominent role in the morphogenesis and organization of the microtubules of the manchette and flagellum. Microtubules arising from the centriole extend anterior...

Ceramide glycanase from the earthworm, Lumbricus terrestris.

Ceramide glycanase (CGase) is an enzyme that cleaves the linkage between the sugar chain and the ceramide. To make this enzyme readily available, we have developed a simple method for preparing it from the earthworm, Lumbricus terrestris. The method involves Bio-Gel A-0.5m, octyl-Sepharose and p-aminophenylthiogalactoside-agarose column chromatography. By gel filtration, the molecular mass of e...

Chemical Stimulation of the Nerve Cord of Lumbricus Terrestris

Nerve cells of different functions cannot be differentiated histologically by staining methods. In order to prove chemical differences it is necessary t o affect the function of a given type of neuron by the action of a chemical agent. Thus Baglioni 1 has demonstrated a chemical difference between sensory and motor cells in the frog and the squid, by showing that phenol is an excitant for the m...

The nitrogenous metabolism of the earthworm (Lumbricus terrestris).

Ontogenetic scaling of burrowing forces in the earthworm Lumbricus terrestris.

In hydrostatic skeletons, it is the internal fluid under pressure surrounded by a body wall in tension (rather than a rigid lever) that enables the stiffening of the organism, the antagonism of muscles and the transmission of force from the muscles to the environment. This study examined the ontogenetic effects of body size on force production by an organism supported with a hydrostatic skeleto...