Perinatal size and maturation of the olfactory and vomeronasal neuroepithelia in lorisoids and lemuroids
| Autor: | Laura J. Alport, John C. Dennis, Praphul Tuladhar, Kunwar P. Bhatnagar, Anne M. Burrows, Timothy D. Smith, Edward E. Morrison |
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| Rok vydání: | 2006 |
| Předmět: |
Vomeronasal organ
Ontogeny Lemur Physiology Gestational Age Anatomy Weaning Biology Nocturnal Olfactory Receptor Neurons Circadian Rhythm Nesting Behavior Neuroepithelial cell Altricial Strepsirhini Animals Newborn biology.animal biology.protein Animals Birth Weight Animal Science and Zoology Precocial Vomeronasal Organ Olfactory marker protein Ecology Evolution Behavior and Systematics |
| Zdroj: | American journal of primatology. 69(1) |
| ISSN: | 0275-2565 |
| Popis: | Explanations for the chemosensory abilities of newborn mammals focus primarily on food (milk) acquisition and communication (e.g., maternal–infant bonding). However, the relative importance of the main and accessory (vomeronasal) olfactory systems is hypothesized to differ at birth between altricial and precocial mammals. Strepsirrhines (lemurs and lorises) possess main and accessory olfactory systems, and vary in life-history traits related to infant dependency and maturation. Accordingly, this study examines the size and maturational characteristics of vomeronasal (VNNE) and olfactory (OE) neuroepithelia in strepsirrhines. Serially sectioned heads of 18 infant cadavers were examined microscopically for neuroepithelial distribution. Measurements were taken on the length of the nasal fossa on one side that was occupied by VNNE and OE. The data were corrected for body size using the cranial length or body mass, and were then examined for correlation with several life-history variables, as well as activity pattern. In addition, immunohistochemistry was used to identify cells in the VNNE and OE that express olfactory marker protein (OMP), a marker of mature olfactory neurons. Relative OE extent was not significantly correlated with any of the life-history variables. Relative VNNE length was negatively correlated with relative gestation length and relative neonatal mass (P |
| Databáze: | OpenAIRE |
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