Morphology of the buccopharyngeal portion of the gill in the fathead minnow Pimephales promelas (Rafinesque).

Published

Journal Article

Buccopharyngeal epithelium covering gill arches and gill rakers of the fathead minnow was studied by light microscopic, scanning, and transmission electron microscopic techniques. Mature mucous cells in goblet pattern and nonmucus containing cells were in the apical one-third of the tissue. The latter cells contributed to a surface microridge system which overlapped apices of goblet cells. The bottom of the epithelium was comprised of a continuous row of darkly stained basal epithelial cells. In this region, two to three epithelial cells of similar staining characteristics were piled up forming apical columns which partially encircled nests of lightly stained cells. A basal lamina and thick basement lamella of about 20 piles of orthogonally arranged collagen supported the epithelium. Numerous taste buds were seen in gill arches and rakers. Taste bud cellular components included marginal cells, light receptor cells, dark receptor cells, and basal cells. These were identical in all taste buds. Taste bud surface morphology differed between gill arch and raker. Pores of the former were depressed, while those of the latter were raised. Thick microvilli of taste pores were apical extensions of light cells, while smaller, more numerous microvilli were projections from dark cells.

Full Text

Duke Authors

Cited Authors

  • Walker, ER; Fidler, SF; Hinton, DE

Published Date

  • May 1, 1981

Published In

Volume / Issue

  • 200 / 1

Start / End Page

  • 67 - 81

PubMed ID

  • 7258695

Pubmed Central ID

  • 7258695

Electronic International Standard Serial Number (EISSN)

  • 1097-0185

International Standard Serial Number (ISSN)

  • 0003-276X

Digital Object Identifier (DOI)

  • 10.1002/ar.1092000107

Language

  • eng