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Morphological Evidence for the Existence of Two Distinct Types of Mitochondria Rich Cells in the Gill of the Crayfish Astacus leptodactylus Eschscholtz
Author(s) -
DunelErb Suzanne,
Barradas Cristina,
Lig Jacques
Publication year - 1997
Publication title -
acta zoologica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.414
H-Index - 37
eISSN - 1463-6395
pISSN - 0001-7272
DOI - 10.1111/j.1463-6395.1997.tb01006.x
Subject(s) - astacus leptodactylus , biology , epithelium , crayfish , ultrastructure , anatomy , respiratory epithelium , organelle , cytoplasm , microbiology and biotechnology , fishery , genetics
An ultrastructural study was performed on gill epithelia of the crayfish Astacus leptodactylus . The filament and the lamina of the podobranch were examined. In both structures a vascular system is lined by a specialized epithelium covered by a cuticle. Different types of epithelium were described in the gill filaments: either a thin epithelium with few organelles and probably involved in gas exchange or, in other filaments, a thick epithelium with characteristics of a transporting epithelium (abundant mitochondria in close association with plasma membrane infoldings). The epithelium of the lamina is also of a transporting type but in this case the complex of membrane infoldings and mitochondria is in an opposite orientation to that of the filament epithelium suggesting a different role in osmoregulation. © 1997 Published by Elsevier Science Ltd on behalf of The Royal Swedish Academy of Sciences.