Structural plasticity in the olfactory system of adult spiny lobsters: Postembryonic development permits life-long growth, turnover, and regeneration

Détails

ID Serval
serval:BIB_2AE9C08F2D8A
Type
Actes de conférence (partie): contribution originale à la littérature scientifique, publiée à l'occasion de conférences scientifiques, dans un ouvrage de compte-rendu (proceedings), ou dans l'édition spéciale d'un journal reconnu (conference proceedings).
Collection
Publications
Titre
Structural plasticity in the olfactory system of adult spiny lobsters: Postembryonic development permits life-long growth, turnover, and regeneration
Titre de la conférence
Marine and Freshwater Research
Auteur(s)
Harrison P.J.H., Cate H.S., Steullet P., Derby C.D.
Organisation
6th International Conference and Workshop on Lobster Biology and Management
Adresse
Key West, Florida, Sep 10-15, 2000

ISSN
1323-1650
Statut éditorial
Publié
Date de publication
2001
Peer-reviewed
Oui
Volume
52
Numéro
8
Pages
1357-1365
Langue
anglais
Résumé
Caribbean spiny lobsters (Panulirus argus) rely on their sense of olfaction for many behaviours. Growth of their olfactory systems, and maintenance of olfactory function, is ensured by structural change that occurs continuously throughout life. In this paper, we review recent studies on postembryonic development in the olfactory system of. argus and several other decapod species. Major structural change occurs in both the peripheral and central olfactory systems; it includes addition and loss of olfactory receptor neurons (ORNs), aesthetasc and other sensilla, and interneurons associated with the olfactory lobes of the brain. From these studies it is clear that continuous growth and turnover of olfactory tissue is a normal process in decapod crustaceans. In addition, we describe for the first time mechanisms that enable the peripheral olfactory system of spiny lobsters to regenerate after injury. We monitored the regeneration of olfactory tissue using in vivo incorporation of the cell proliferation marker 5-bromo-2-deoxyuridine (BrdU). Our results show that regeneration after partial antennular amputation, which reduces the length of the antennule and thereby the number of ORNs, occurs as a result of up-regulation of the normal mode of ORN addition and down-regulation of loss. In contrast, localized injury to aesthetasc sensilla, which causes the associated ORNs to degenerate but does not reduce antennular length, is followed by local regeneration of olfactory tissue.
Mots-clé
olfaction, olfactory receptor neuron, neurogenesis, proliferation, invertebrate, crustacean, lobster, moult
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Création de la notice
11/05/2017 9:00
Dernière modification de la notice
20/08/2019 13:10
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