Quantitative comparative analysis of the nasal chemosensory organs of anurans during larval development and metamorphosis highlights the relative importance of chemosensory subsystems in the group
The anuran peripheral olfactory system is composed of a number of subsystems, represented by distinct neuroepithelia. These include the main olfactory epithelium and vomeronasal organ (found in most tetrapods) and three specialized epithelia of anurans: the buccal-exposed olfactory epithelium of lar...
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2017
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03622525_v278_n9_p1208_Jungblut http://hdl.handle.net/20.500.12110/paper_03622525_v278_n9_p1208_Jungblut |
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paper:paper_03622525_v278_n9_p1208_Jungblut2023-06-08T15:35:06Z Quantitative comparative analysis of the nasal chemosensory organs of anurans during larval development and metamorphosis highlights the relative importance of chemosensory subsystems in the group Jungblut, Lucas David Paz, Dante Agustin Pozzi, Andrea Gabriela amphibians chemical sensing comparative anatomy olfactory vomeronasal organ anatomy and histology animal Anura comparative study epithelium growth, development and aging image processing immunohistochemistry larva metamorphosis olfactory mucosa species difference vomeronasal organ Xenopus laevis Animals Anura Epithelium Image Processing, Computer-Assisted Immunohistochemistry Larva Metamorphosis, Biological Olfactory Mucosa Species Specificity Vomeronasal Organ Xenopus laevis The anuran peripheral olfactory system is composed of a number of subsystems, represented by distinct neuroepithelia. These include the main olfactory epithelium and vomeronasal organ (found in most tetrapods) and three specialized epithelia of anurans: the buccal-exposed olfactory epithelium of larvae, and the olfactory recess and middle chamber epithelium of postmetamorphic animals. To better characterize the developmental changes in these subsystems across the life cycle, morphometric changes of the nasal chemosensory organs during larval development and metamorphosis were analyzed in three different anuran species (Rhinella arenarum, Hypsiboas pulchellus, and Xenopus laevis). We calculated the volume of the nasal chemosensory organs by measuring the neuroepithelial area from serial histological sections at four different stages. In larvae, the vomeronasal organ was relatively reduced in R. arenarum compared with the other two species; the buccal-exposed olfactory epithelium was absent in X. laevis, and best developed in H. pulchellus. In postmetamorphic animals, the olfactory epithelium (air-sensitive organ) was relatively bigger in terrestrial species (R. arenarum and H. pulchellus), whereas the vomeronasal and the middle chamber epithelia (water-sensitive organs) was best developed in X. laevis. A small olfactory recess (likely homologous with the middle chamber epithelium) was found in R. arenarum juveniles, but not in H. pulchellus. These results support the association of the vomeronasal and middle chamber epithelia with aquatic olfaction, as seen by their enhanced development in the secondarily aquatic juveniles of X. laevis. They also support a role for the larval buccal-exposed olfactory epithelium in assessment of oral contents: it was absent in X. laevis, an obligate suspension feeder, while present in the two grazing species. These initial quantitative results give, for the first time, insight into the functional importance of the peripheral olfactory subsystems across the anuran life cycle. © 2017 Wiley Periodicals, Inc. Fil:Jungblut, L.D. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Paz, D.A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Pozzi, A.G. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2017 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03622525_v278_n9_p1208_Jungblut http://hdl.handle.net/20.500.12110/paper_03622525_v278_n9_p1208_Jungblut |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
amphibians chemical sensing comparative anatomy olfactory vomeronasal organ anatomy and histology animal Anura comparative study epithelium growth, development and aging image processing immunohistochemistry larva metamorphosis olfactory mucosa species difference vomeronasal organ Xenopus laevis Animals Anura Epithelium Image Processing, Computer-Assisted Immunohistochemistry Larva Metamorphosis, Biological Olfactory Mucosa Species Specificity Vomeronasal Organ Xenopus laevis |
| spellingShingle |
amphibians chemical sensing comparative anatomy olfactory vomeronasal organ anatomy and histology animal Anura comparative study epithelium growth, development and aging image processing immunohistochemistry larva metamorphosis olfactory mucosa species difference vomeronasal organ Xenopus laevis Animals Anura Epithelium Image Processing, Computer-Assisted Immunohistochemistry Larva Metamorphosis, Biological Olfactory Mucosa Species Specificity Vomeronasal Organ Xenopus laevis Jungblut, Lucas David Paz, Dante Agustin Pozzi, Andrea Gabriela Quantitative comparative analysis of the nasal chemosensory organs of anurans during larval development and metamorphosis highlights the relative importance of chemosensory subsystems in the group |
| topic_facet |
amphibians chemical sensing comparative anatomy olfactory vomeronasal organ anatomy and histology animal Anura comparative study epithelium growth, development and aging image processing immunohistochemistry larva metamorphosis olfactory mucosa species difference vomeronasal organ Xenopus laevis Animals Anura Epithelium Image Processing, Computer-Assisted Immunohistochemistry Larva Metamorphosis, Biological Olfactory Mucosa Species Specificity Vomeronasal Organ Xenopus laevis |
| description |
The anuran peripheral olfactory system is composed of a number of subsystems, represented by distinct neuroepithelia. These include the main olfactory epithelium and vomeronasal organ (found in most tetrapods) and three specialized epithelia of anurans: the buccal-exposed olfactory epithelium of larvae, and the olfactory recess and middle chamber epithelium of postmetamorphic animals. To better characterize the developmental changes in these subsystems across the life cycle, morphometric changes of the nasal chemosensory organs during larval development and metamorphosis were analyzed in three different anuran species (Rhinella arenarum, Hypsiboas pulchellus, and Xenopus laevis). We calculated the volume of the nasal chemosensory organs by measuring the neuroepithelial area from serial histological sections at four different stages. In larvae, the vomeronasal organ was relatively reduced in R. arenarum compared with the other two species; the buccal-exposed olfactory epithelium was absent in X. laevis, and best developed in H. pulchellus. In postmetamorphic animals, the olfactory epithelium (air-sensitive organ) was relatively bigger in terrestrial species (R. arenarum and H. pulchellus), whereas the vomeronasal and the middle chamber epithelia (water-sensitive organs) was best developed in X. laevis. A small olfactory recess (likely homologous with the middle chamber epithelium) was found in R. arenarum juveniles, but not in H. pulchellus. These results support the association of the vomeronasal and middle chamber epithelia with aquatic olfaction, as seen by their enhanced development in the secondarily aquatic juveniles of X. laevis. They also support a role for the larval buccal-exposed olfactory epithelium in assessment of oral contents: it was absent in X. laevis, an obligate suspension feeder, while present in the two grazing species. These initial quantitative results give, for the first time, insight into the functional importance of the peripheral olfactory subsystems across the anuran life cycle. © 2017 Wiley Periodicals, Inc. |
| author |
Jungblut, Lucas David Paz, Dante Agustin Pozzi, Andrea Gabriela |
| author_facet |
Jungblut, Lucas David Paz, Dante Agustin Pozzi, Andrea Gabriela |
| author_sort |
Jungblut, Lucas David |
| title |
Quantitative comparative analysis of the nasal chemosensory organs of anurans during larval development and metamorphosis highlights the relative importance of chemosensory subsystems in the group |
| title_short |
Quantitative comparative analysis of the nasal chemosensory organs of anurans during larval development and metamorphosis highlights the relative importance of chemosensory subsystems in the group |
| title_full |
Quantitative comparative analysis of the nasal chemosensory organs of anurans during larval development and metamorphosis highlights the relative importance of chemosensory subsystems in the group |
| title_fullStr |
Quantitative comparative analysis of the nasal chemosensory organs of anurans during larval development and metamorphosis highlights the relative importance of chemosensory subsystems in the group |
| title_full_unstemmed |
Quantitative comparative analysis of the nasal chemosensory organs of anurans during larval development and metamorphosis highlights the relative importance of chemosensory subsystems in the group |
| title_sort |
quantitative comparative analysis of the nasal chemosensory organs of anurans during larval development and metamorphosis highlights the relative importance of chemosensory subsystems in the group |
| publishDate |
2017 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03622525_v278_n9_p1208_Jungblut http://hdl.handle.net/20.500.12110/paper_03622525_v278_n9_p1208_Jungblut |
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| _version_ |
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