In vitro cultivation of digeneans would aid the development of effective treatments and studies of the biology of the parasites. The goal of this study was to optimize culture conditions for the trematode, Gynaecotyla adunca. Metacercariae of the parasite from fiddler crabs, Uca pugnax, excysted in trypsin, were incubated overnight to permit fertilization, and were cultured in different conditi...

Las personas con discapacidad forman parte de las minorías vulnerables, sobre ellos y su imagen, recae el uso una terminología obsoleta en los medios comunicación actuales. El objetivo esta investigación fue analizar representaciones sociales españoles, como factor constitutivo la realidad social, representación social. Se examinó, cuantificó, analizó, e interpretó, cómo se representa a un peri...

El artículo tiene como objetivo principal presentar una propuesta para la mejora de procedimientos en concesión créditos entidad financiera del Ecuador, a través metodología Kanban dado que actualmente los procesos se realizan manera obsoleta con trámites extensos generan cuellos botella y mayor tiempo respuesta el cliente; esta forma espera reducir costos producción su vez maximizar rendimient...

A study was made of the emergence of certain enzymes during the embryogenesis of llyanassa. Lobeless and normal embryos were compared in order to determine the effect of polar lobe removal on subsequent molecular developments. Polyacrylamide gel electrophoresis in capillary tubes, a technique requiring only small numbers of embryos, was used to obtain the isozyme patterns of alkaline phosphatas...

Gaseous nitric oxide (NO) is produced through the action of the enzyme nitric oxide synthase (NOS) and acts as a neurotransmitter (Jacklet and Gruhn, 1994b. Elphick et al., 1995a; Jacklet, 1995) in the nervous systems of adult gastropod molluses. By comparison, little or no information appears to exist about the ontogeny of molluscan NOS-containing neurons. NADPH-diaphorase (NADPHd) has been de...

The apical ganglion (AG) of larval caenogastropods, such as Ilyanassa obsoleta, houses a sensory organ, contains five serotonergic neurons, innervates the muscular and ciliary components of the velum, and sends neurites into a neuropil that lies atop the cerebral commissure. During metamorphosis, the AG is lost. This loss had been postulated to occur through some form of programmed cell death (...

The central nervous system (CNS) of a metamorphically competent larva of the caenogastropod Ilyanassa obsoleta contains a medial, unpaired apical ganglion (AG) of approximately 25 neurons that lies above the commissure connecting the paired cerebral ganglia. The AG, also known as the cephalic or apical sensory organ (ASO), contains numerous sensory neurons and innervates the ciliated velar lobe...