Abstract
The ultrastructure of mitochondria in the flattened circomyarian fibers of the horsehair worm Gordionus alpestris (Nemathelminthes) was examined. In contrast to the previously published data, we showed these mitochondria to be giant elongated organelles that densely fill the central cytoplasmic space of the ribbon-like muscle fibers. No fundamental differ-ences were found in the ultrastructure of the muscle tissue mitochondria in actively moving free-living and parasitic G. alpestris worms. The functional significance of the observed ultrastructural organization of mitochondria is discussed in connection with the necessity for an extended mitochondrial membrane system for a uniform supply of active muscle tissue with energy.
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Original Russian Text © V. B. Vays, I. M. Vangeli, C. M. Eldarov, B. D. Efeykin, L. E. Bakeeva, 2019, published in Biokhimiya, 2019, Vol. 84, No. 1, pp. 138–144.
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Vays, V.B., Vangeli, I.M., Eldarov, C.M. et al. Mitochondria in Obliquely Striated Muscles of the Horsehair Worm Gordionus alpestris (Nematomorpha, Gordioidea) with Structural Organization Typical of Cells with Energy-Intensive Processes. Biochemistry Moscow 84, 56–61 (2019). https://doi.org/10.1134/S0006297919010073
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DOI: https://doi.org/10.1134/S0006297919010073