The Accessory Olfactory Bulb in <i>Arvicola scherman</i>: A Neuroanatomical Study in a Subterranean Mammal
The accessory olfactory bulb (AOB) processes chemical signals crucial for species-specific socio-sexual behaviors. There is limited information about the AOB of wild rodents, and this study aims to characterize the neurochemical organization of the AOB in the fossorial water vole (<i>Arvicola...
Saved in:
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2024-11-01
|
| Series: | Animals |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2076-2615/14/22/3285 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1846154590616027136 |
|---|---|
| author | Sara Ruiz-Rubio Irene Ortiz-Leal Mateo V. Torres Mostafa G. A. Elsayed Aitor Somoano Pablo Sanchez-Quinteiro |
| author_facet | Sara Ruiz-Rubio Irene Ortiz-Leal Mateo V. Torres Mostafa G. A. Elsayed Aitor Somoano Pablo Sanchez-Quinteiro |
| author_sort | Sara Ruiz-Rubio |
| collection | DOAJ |
| description | The accessory olfactory bulb (AOB) processes chemical signals crucial for species-specific socio-sexual behaviors. There is limited information about the AOB of wild rodents, and this study aims to characterize the neurochemical organization of the AOB in the fossorial water vole (<i>Arvicola scherman</i>), a subterranean Cricetidae rodent. We employed histological, immunohistochemical, and lectin-histochemical techniques. The AOB of these voles exhibits a distinct laminar organization, with prominent mitral cells and a dense population of periglomerular cells. Lectin histochemistry and G-protein immunohistochemistry confirmed the existence of an antero-posterior zonation. Immunohistochemical analysis demonstrated significant expression of PGP 9.5, suggesting its involvement in maintaining neuronal activity within the AOB. In contrast, the absence of SMI-32 labelling in the AOB, compared to its strong expression in the main olfactory bulb, highlights functional distinctions between these two olfactory subsystems. Calcium-binding proteins allowed the characterization of atypical sub-bulbar nuclei topographically related to the AOB. All these features suggest that the AOB of <i>Arvicola scherman</i> is adapted for enhanced processing of chemosensory signals, which may play a pivotal role in its subterranean lifestyle. Our results provide a foundation for future studies exploring the implications of these adaptations, including potential improvements in the management of these vole populations. |
| format | Article |
| id | doaj-art-042bfaea75a94bc5ba608f28b6b8c6e6 |
| institution | Kabale University |
| issn | 2076-2615 |
| language | English |
| publishDate | 2024-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Animals |
| spelling | doaj-art-042bfaea75a94bc5ba608f28b6b8c6e62024-11-26T17:46:03ZengMDPI AGAnimals2076-26152024-11-011422328510.3390/ani14223285The Accessory Olfactory Bulb in <i>Arvicola scherman</i>: A Neuroanatomical Study in a Subterranean MammalSara Ruiz-Rubio0Irene Ortiz-Leal1Mateo V. Torres2Mostafa G. A. Elsayed3Aitor Somoano4Pablo Sanchez-Quinteiro5Department of Anatomy, Animal Production and Clinical Veterinary Sciences, Faculty of Veterinary, University of Santiago de Compostela, Av. Carballo Calero s/n, 27002 Lugo, SpainDepartment of Anatomy, Animal Production and Clinical Veterinary Sciences, Faculty of Veterinary, University of Santiago de Compostela, Av. Carballo Calero s/n, 27002 Lugo, SpainDepartment of Anatomy, Animal Production and Clinical Veterinary Sciences, Faculty of Veterinary, University of Santiago de Compostela, Av. Carballo Calero s/n, 27002 Lugo, SpainDepartment of Anatomy and Embryology, Faculty of Veterinary Medicine, Sohag University, Sohag 1646130, EgyptServicio Regional de Investigación y Desarrollo Agroalimentario (SERIDA), 33300 Villaviciosa, SpainDepartment of Anatomy, Animal Production and Clinical Veterinary Sciences, Faculty of Veterinary, University of Santiago de Compostela, Av. Carballo Calero s/n, 27002 Lugo, SpainThe accessory olfactory bulb (AOB) processes chemical signals crucial for species-specific socio-sexual behaviors. There is limited information about the AOB of wild rodents, and this study aims to characterize the neurochemical organization of the AOB in the fossorial water vole (<i>Arvicola scherman</i>), a subterranean Cricetidae rodent. We employed histological, immunohistochemical, and lectin-histochemical techniques. The AOB of these voles exhibits a distinct laminar organization, with prominent mitral cells and a dense population of periglomerular cells. Lectin histochemistry and G-protein immunohistochemistry confirmed the existence of an antero-posterior zonation. Immunohistochemical analysis demonstrated significant expression of PGP 9.5, suggesting its involvement in maintaining neuronal activity within the AOB. In contrast, the absence of SMI-32 labelling in the AOB, compared to its strong expression in the main olfactory bulb, highlights functional distinctions between these two olfactory subsystems. Calcium-binding proteins allowed the characterization of atypical sub-bulbar nuclei topographically related to the AOB. All these features suggest that the AOB of <i>Arvicola scherman</i> is adapted for enhanced processing of chemosensory signals, which may play a pivotal role in its subterranean lifestyle. Our results provide a foundation for future studies exploring the implications of these adaptations, including potential improvements in the management of these vole populations.https://www.mdpi.com/2076-2615/14/22/3285accessory olfactory bulbvomeronasal systemfossorial water voleimmunohistochemistrylectinspheromones |
| spellingShingle | Sara Ruiz-Rubio Irene Ortiz-Leal Mateo V. Torres Mostafa G. A. Elsayed Aitor Somoano Pablo Sanchez-Quinteiro The Accessory Olfactory Bulb in <i>Arvicola scherman</i>: A Neuroanatomical Study in a Subterranean Mammal Animals accessory olfactory bulb vomeronasal system fossorial water vole immunohistochemistry lectins pheromones |
| title | The Accessory Olfactory Bulb in <i>Arvicola scherman</i>: A Neuroanatomical Study in a Subterranean Mammal |
| title_full | The Accessory Olfactory Bulb in <i>Arvicola scherman</i>: A Neuroanatomical Study in a Subterranean Mammal |
| title_fullStr | The Accessory Olfactory Bulb in <i>Arvicola scherman</i>: A Neuroanatomical Study in a Subterranean Mammal |
| title_full_unstemmed | The Accessory Olfactory Bulb in <i>Arvicola scherman</i>: A Neuroanatomical Study in a Subterranean Mammal |
| title_short | The Accessory Olfactory Bulb in <i>Arvicola scherman</i>: A Neuroanatomical Study in a Subterranean Mammal |
| title_sort | accessory olfactory bulb in i arvicola scherman i a neuroanatomical study in a subterranean mammal |
| topic | accessory olfactory bulb vomeronasal system fossorial water vole immunohistochemistry lectins pheromones |
| url | https://www.mdpi.com/2076-2615/14/22/3285 |
| work_keys_str_mv | AT sararuizrubio theaccessoryolfactorybulbiniarvicolaschermanianeuroanatomicalstudyinasubterraneanmammal AT ireneortizleal theaccessoryolfactorybulbiniarvicolaschermanianeuroanatomicalstudyinasubterraneanmammal AT mateovtorres theaccessoryolfactorybulbiniarvicolaschermanianeuroanatomicalstudyinasubterraneanmammal AT mostafagaelsayed theaccessoryolfactorybulbiniarvicolaschermanianeuroanatomicalstudyinasubterraneanmammal AT aitorsomoano theaccessoryolfactorybulbiniarvicolaschermanianeuroanatomicalstudyinasubterraneanmammal AT pablosanchezquinteiro theaccessoryolfactorybulbiniarvicolaschermanianeuroanatomicalstudyinasubterraneanmammal AT sararuizrubio accessoryolfactorybulbiniarvicolaschermanianeuroanatomicalstudyinasubterraneanmammal AT ireneortizleal accessoryolfactorybulbiniarvicolaschermanianeuroanatomicalstudyinasubterraneanmammal AT mateovtorres accessoryolfactorybulbiniarvicolaschermanianeuroanatomicalstudyinasubterraneanmammal AT mostafagaelsayed accessoryolfactorybulbiniarvicolaschermanianeuroanatomicalstudyinasubterraneanmammal AT aitorsomoano accessoryolfactorybulbiniarvicolaschermanianeuroanatomicalstudyinasubterraneanmammal AT pablosanchezquinteiro accessoryolfactorybulbiniarvicolaschermanianeuroanatomicalstudyinasubterraneanmammal |