Mitochondria-rich cells in Antarctic fish gills

Autor: Maria Angela Masini, Paola Prato, Maddalena Sturla, Biancamaria Uva
Rok vydání: 2000
Předmět:
Zdroj: Polar Biology. 23:250-256
ISSN: 1432-2056
0722-4060
Popis: We used transmission and scanning electron microscopy and an antibody to the inner mitochondrial membrane to study the presence and localisation of mitochondria-rich cells in the gills of two Antarctic fishes, Chionodraco hamatus (Channichthyidae) and Trematomus bernacchii (Nototheniidae). The general morphology of the gills in the two species was slightly different: in T. bernacchii the filament and secondary lamellae were short and thicker, and mitochondria-rich cells were less numerous than in C. hamatus. In the two species the mitochondria-rich cells, distributed in the secondary and primary epithelium, were of the same morphological type, similar to the α-chloride cells of temperate seawater teleosts. The study was carried out to compare the mitochondria-rich cells of Antarctic fishes to the chloride cells of temperate marine teleosts. Immunolocalisation, using a specific antibody to the α-subunit of Na+/K+-ATPase, was observed in numerous epithelial cells in the interlamellar epithelium and on the secondary lamellae, suggesting an active sodium chloride secretion.
Databáze: OpenAIRE
Externí odkaz: