Comparative Study of Chemosensory Organs of Shrimp From Hydrothermal Vent and Coastal Environments.
The detection of chemical signals is involved in a variety of crustacean behaviors, such as social interactions, search and evaluation of food and navigation in the environment. At hydrothermal vents, endemic shrimp may use the chemical signature of vent fluids to locate active edifices, however little is known on their sensory perception in these remote deep-sea habitats. Here, we present the first comparative description of the sensilla on the antennules and antennae of 4 hydrothermal vent shrimp (Rimicaris exoculata, Mirocaris fortunata, Chorocaris chacei, and Alvinocaris markensis) and of a closely related coastal shrimp (Palaemon elegans). These observations revealed no specific adaptation regarding the size or number of aesthetascs (specialized unimodal olfactory sensilla) between hydrothermal and coastal species. We also identified partial sequences of the ionotropic receptor IR25a, a co-receptor putatively involved in olfaction, in 3 coastal and 4 hydrothermal shrimp species, and showed that it is mainly expressed in the lateral flagella of the antennules that bear the unimodal chemosensilla aesthetascs.
Sorbonne Universités, Univ Paris 06, UMR CNRS MNHN 7208 Biologie des Organismes Aquatiques et Ecosystèmes (BOREA), Equipe Adaptation aux Milieux Extrêmes, Bât. A, 4e étage, 7 Quai St Bernard, 75005 Paris, France.
Magali
M
Zbinden
Sorbonne Universités, Univ Paris 06, UMR CNRS MNHN 7208 Biologie des Organismes Aquatiques et Ecosystèmes (BOREA), Equipe Adaptation aux Milieux Extrêmes, Bât. A, 4e étage, 7 Quai St Bernard, 75005 Paris, France.
Camille
C
Berthod
Sorbonne Universités, Univ Paris 06, Institut d'Ecologie et des Sciences de l'Environnement (iEES-Paris), 4 place Jussieu, 75005 Paris, France and.
Nicolas
N
Montagné
Sorbonne Universités, Univ Paris 06, UMR CNRS MNHN 7208 Biologie des Organismes Aquatiques et Ecosystèmes (BOREA), Equipe Adaptation aux Milieux Extrêmes, Bât. A, 4e étage, 7 Quai St Bernard, 75005 Paris, France.
Julia
J
Machon
Sorbonne Universités, Univ Paris 06, UMR CNRS MNHN 7208 Biologie des Organismes Aquatiques et Ecosystèmes (BOREA), Equipe Adaptation aux Milieux Extrêmes, Bât. A, 4e étage, 7 Quai St Bernard, 75005 Paris, France.
Nelly
N
Léger
Sorbonne Universités, Univ Paris 06, Institut d'Ecologie et des Sciences de l'Environnement (iEES-Paris), 4 place Jussieu, 75005 Paris, France and.
Thomas
T
Chertemps
Sorbonne Universités, Univ Paris 06, UMR CNRS MNHN 7208 Biologie des Organismes Aquatiques et Ecosystèmes (BOREA), Département des milieux et peuplements aquatiques, CP26, 43 rue Cuvier, 75005 Paris, France.
Nicolas
N
Rabet
Sorbonne Universités, Univ Paris 06, UMR CNRS MNHN 7208 Biologie des Organismes Aquatiques et Ecosystèmes (BOREA), Equipe Adaptation aux Milieux Extrêmes, Bât. A, 4e étage, 7 Quai St Bernard, 75005 Paris, France.
Bruce
B
Shillito
Sorbonne Universités, Univ Paris 06, UMR CNRS MNHN 7208 Biologie des Organismes Aquatiques et Ecosystèmes (BOREA), Equipe Adaptation aux Milieux Extrêmes, Bât. A, 4e étage, 7 Quai St Bernard, 75005 Paris, France.
Juliette
J
Ravaux
D000222:Adaptation, Physiological; D000818:Animals; D033364:Decapoda / Q000502:physiology*; D060086:Hydrothermal Vents; D058468:Receptors, Ionotropic Glutamate / Q000032:analysis; D058618:Sensilla / Q000502:physiology*
D058468:Receptors, Ionotropic Glutamate
IR25a; aesthetascs; decapod; hydrothermal shrimp; olfaction