title: Plasticity in Insect Olfaction: To Smell or Not to Smell?
abstract: In insects, olfaction plays a crucial role in many behavioral contexts, such as locating food, sexual partners, and oviposition sites. To successfully perform such behaviors, insects must respond to chemical stimuli at the right moment. Insects modulate their olfactory system according to their physiological state upon interaction with their environment. Here, we review the plasticity of behavioral responses to different odor types according to age, feeding state, circadian rhythm, and mating status. We also summarize what is known about the underlying neural and endocrinological mechanisms, from peripheral detection to central nervous integration, and cover neuromodulation from the molecular to the behavioral level. We describe forms of olfactory plasticity that have contributed to the evolutionary success of insects and have provided them with remarkable tools to adapt to their ever-changing environment.
authors.affiliation: Neuroéthologie-RCIM, INRA-Université d'Angers, UPRES EA 2647 USC INRA 1330, 49071 Beaucouzé cedex, France; email: christophe.gadenne@angers.inra.fr , sylvia.anton@angers.inra.fr.
authors.forename: Christophe
authors.initials: C
authors.lastname: Gadenne
authors.affiliation: Laboratorio de Fisiología de Insectos, DBBE, FCEyN, Universidad de Buenos Aires, IBBEA, CONICET-UBA, Ciudad Universitaria, C1428EHA, Buenos Aires, Argentina; email: rbarrozo@bg.fcen.uba.ar.
authors.forename: Romina B
authors.initials: RB
authors.lastname: Barrozo
authors.affiliation: Neuroéthologie-RCIM, INRA-Université d'Angers, UPRES EA 2647 USC INRA 1330, 49071 Beaucouzé cedex, France; email: christophe.gadenne@angers.inra.fr , sylvia.anton@angers.inra.fr.
authors.forename: Sylvia
authors.initials: S
authors.lastname: Anton
mesh_terms: D000818:Animals; D000066670:Cell Plasticity; D007313:Insecta / Q000502:physiology*; D009473:Neuronal Plasticity; D055696:Olfactory Perception; D012903:Smell
keywords: antenna; antennal lobe; behavior; hormones; modulation; odor