Neuroanatomy of the Accessory Olfactory Bulb in the Fossorial Water Vole DOI Open Access

Sara Ruiz‐Rubio,

Irene Ortiz‐Leal, Mateo V. Torres

et al.

bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 12, 2024

Abstract The accessory olfactory bulb (AOB) plays a key role in processing chemical signals crucial for species-specific social and reproductive behaviors. While extensive research has focused on the vomeronasal system of laboratory rodents, less is known about wild species, particularly those that rely heavily communication. This study aims to characterize morphological neurochemical organization AOB fossorial water vole ( Arvicola scherman ), subterranean rodent species from family Cricetidae. We have employed histological techniques, including Nissl hematoxylin staining, as well immunohistochemical lectin-histochemical markers, assess structure. Our findings reveal exhibits distinct laminar with prominent mitral cells mitral-plexiform layer, dense labeling periglomerular short-axon glomerular layer. Lectin histochemistry further confirmed zonation patterns analogous seen other species. Immunohistochemical analysis demonstrated significant expression PGP 9.5, suggesting its involvement maintaining neuronal activity within AOB. In contrast, absence SMI-32 AOB, compared strong main bulb, highlights functional distinctions between these two subsystems. These structural characteristics suggest adapted enhanced chemosensory signals, which may play pivotal lifestyle. results provide foundation future studies exploring implications adaptations, potential improvements integrated management populations.

Language: Английский

Neuroanatomy of the Accessory Olfactory Bulb in the Fossorial Water Vole DOI Open Access

Sara Ruiz‐Rubio,

Irene Ortiz‐Leal, Mateo V. Torres

et al.

bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 12, 2024

Abstract The accessory olfactory bulb (AOB) plays a key role in processing chemical signals crucial for species-specific social and reproductive behaviors. While extensive research has focused on the vomeronasal system of laboratory rodents, less is known about wild species, particularly those that rely heavily communication. This study aims to characterize morphological neurochemical organization AOB fossorial water vole ( Arvicola scherman ), subterranean rodent species from family Cricetidae. We have employed histological techniques, including Nissl hematoxylin staining, as well immunohistochemical lectin-histochemical markers, assess structure. Our findings reveal exhibits distinct laminar with prominent mitral cells mitral-plexiform layer, dense labeling periglomerular short-axon glomerular layer. Lectin histochemistry further confirmed zonation patterns analogous seen other species. Immunohistochemical analysis demonstrated significant expression PGP 9.5, suggesting its involvement maintaining neuronal activity within AOB. In contrast, absence SMI-32 AOB, compared strong main bulb, highlights functional distinctions between these two subsystems. These structural characteristics suggest adapted enhanced chemosensory signals, which may play pivotal lifestyle. results provide foundation future studies exploring implications adaptations, potential improvements integrated management populations.

Language: Английский

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