ABSTRACT

In most species, there are two chemosensory systems, both located in the nasal cavity but physiologically and anatomically distinct (Figure 10.1). The main olfactory epithelium (MOE) is principally involved in the airborne odor perception, whereas the vomeronasal organ (VNO) of Jacobson in the detection of pheromones that are chemical compounds secreted or excreted by individuals of the same species (conspecifics) (Dulac & Torello 2003; Tirindelli et al. 2009). Deficits in social and reproductive behavior are marked in animals underlying the surgical removal of the VNO but also the chemical inactivation of the MOE (Kiyokawa et al. 2007; Kolunie &

10.1 Introduction ..................................................................................................297 10.2 Pheromone Receptors ...................................................................................302