Structure, development, and evolutionary aspects of the peripheral olfactory system

Hydrodynamic aspects of fish olfaction

“…5). One of the most sophisticated lamellar systems, however, occurs in the olfactory organ of the family Polypteridae (bichirs), and essentially consists of six elongated rosettes fused together in a radial fashion to form an extremely compact unit (Pfeiffer 1968;Theisen 1970; see also Zeiske et al 1992, fig. 2.5).…”

Ultrastructural characterization of the olfactory organ in glass eels,Anguilla anguilla(Osteichthyes, Anguilliformes)

“…The nonsensory epithelium (i.e., an unkeratinized squamous stratified epithelium) shows flattened and basal epidermal cells, scattered nonsensory ciliated cells and mucous gland cells. An extensive description of the olfactory epithelium ultrastructure and cell components in adult fish has been provided by several authors, reviewed by Yamamoto (1982), by Caprio (1984Caprio ( , 1988 and more recently by Zeiske et al (1992).…”

Reproduction, olfaction and dominance behaviour in Senegalese sole (Solea senegalensis)

“…Two of these sensory cells have been found in common sole , microvillous and ciliated cells whereas crypt cells were not observed. Nevertheless, different types of OSNs were not distinguished in the present study due to the technique used, however, it could be expected that Senegalese sole own the same sensory cells that were observed in common sole as fish belonging to the same family, which usually have olfactory rosettes of the same or similar type (Yamamoto, 1982;Zeiske et al, 1992). …”

“…The non-sensory cell group maintains the structure and function of the olfactory rosette and in particularly of the sensory cells. The sensory cell group receives the chemical information from the environment and then this information is directly transmitted to the brain through the olfactory nerve (Zeiske et al, 1992;Hansen and Zielinski, 2005). The OSNs are able to detect an immense spectrum of odours that express specifically a subset of olfactory receptors (known as "one neuron-one receptor" rule) (Miyasaka et al, 2013) whose axons converge in the olfactory bulb to establish a discrete and precise map of olfactory receptor expression (Buck et al, 2000;Miyasaka et al, 2013).…”

“…The olfactory rosette, which is the main structure of the olfactory system, is located into the olfactory chamber, which connects with the exterior environment through the nostrils that control the water flow through the olfactory cavity (Hansen and Zielinski, 2005;Zeiske et al, 1992). At cellular level, the olfactory epithelium (OE) is a complex tissue that contains both sensory and non-sensory cell groups.…”