Journal article
Oral papillae of adults of the southern hemisphere lamprey Geotria australis
Journal of Morphology, Vol.203(1), pp.87-96
1990
Abstract
The morphology, cell types, and innervation of the several small papillae (x̄ = 17) and two larger papillae, which together form a ring just outside the fimbriae surrounding the suctorial disc of adult Geotria australis, have been studied using various histological stains, including silver impregnation, and scanning and transmission electron microscopy. The epithelium of all papillae consists almost entirely of mucigenic cells. The multivillous and oligovillous cells, which are found elsewhere in the lamprey epidermis, were not observed, and Merkel and polyvillous cells are rare. Free nerve endings are common, however, in the basal layers of the epidermis. Unlike the small papillae, the two large papillae contain a core of skeletal muscle and a prominent layer of dermal collagen. In the submucosa of these large papillae, the nerves form a dense, compact layer that contains many large and probably sensory axons. It is suggested that the oral disc papillae of adult G. australis are encapsulated mechanosensory structures that play a role in enabling the animal to locate and attach to a suitable point on host fishes or other surfaces.
Details
- Title
- Oral papillae of adults of the southern hemisphere lamprey Geotria australis
- Authors/Creators
- R.D. Cook (Author/Creator) - Murdoch UniversityR.W. Hilliard (Author/Creator) - Murdoch UniversityI.C. Potter (Author/Creator) - Murdoch University
- Publication Details
- Journal of Morphology, Vol.203(1), pp.87-96
- Publisher
- Wiley-Blackwell
- Identifiers
- 991005544843707891
- Copyright
- © 1990 Wiley-Liss, Inc.
- Murdoch Affiliation
- School of Biological and Environmental Sciences; School of Veterinary Studies
- Language
- English
- Resource Type
- Journal article
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- Citation topics
- 3 Agriculture, Environment & Ecology
- 3.220 Smell & Taste Science
- 3.220.1242 Taste Perception
- Web Of Science research areas
- Anatomy & Morphology
- ESI research areas
- Biology & Biochemistry