The Mechanoreceptor Organs of the Lamellirostral Birds (Anseriformes, Aves)
| Autor: | A. G. Fedorenko, K. V. Avilova, N. V. Lebedeva |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
0106 biological sciences
0301 basic medicine integumentary system biology Mandible Connective tissue Anatomy biology.organism_classification Anseriformes 010603 evolutionary biology 01 natural sciences General Biochemistry Genetics and Molecular Biology Mechanoreceptor 03 medical and health sciences 030104 developmental biology medicine.anatomical_structure medicine Waterfowl General Agricultural and Biological Sciences Process (anatomy) |
| Zdroj: | Biology Bulletin. 45:51-60 |
| ISSN: | 1608-3059 1062-3590 |
| Popis: | Two types of surface tactile epidermal formations are identified in the bill tip organ of 11 species of lamellirostral birds. Their density arrangement and ratio in the mandible and maxilla are greater in dabbling ducks (filter-feeder species) than in herbivorous and in actively pursuing species. The length and proportions of the connective tissue tubules enclosing the encapsulated mechanoreceptors in filter-feeder species differ significantly from the others. The vibroreceptor endings are significantly more numerous in filter-feeder species and the touch endings in nonfiltering ones. The latter are smaller in the filter-feeder species. Within the walls of the connective tissue tubules, tactile epitheliocytes are registered for the first time. The structure of keratinocytes separating epidermal papillae of the bill tip organ apparently ensures their mobility. The bill tip organ is probably involved in the communication process of waterfowl. |
| Databáze: | OpenAIRE |
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