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Fine structure of the copulatory apparatus of Nippotaenia mogurndae Yamaguti et Miyato, 1940 (Cestoda, Nippotaeniidea)

  • Biology, Morphology, and Systematics of Hydrobionts
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Abstract

The fine structure of the copulatory apparatus of Nippotaenia mogurndae Yamaguti et Miyato, 1940 has been studied by transmission electron microscopy. Structures of the cirrus sac and the genital atrium, the ultrastructural organization of genital ducts of the copulatory apparatus, and unicellular prostate glands localized in the cirrus sac have been described. On the surface of the atrium epithelium, tubular and conical microtriches are observed similar to tegumental microtriches. The absence of microtriches on the apical surface of the cirrus and vaginal epithelium and an increase in the number of layers of underlying musculature in these ducts when compared to other sections of the copulatory apparatus have been determined. The conclusion about the possibility of cross fertilization due to the active movements of segments separated from the strobila with developed genital complexes and a nonformed uterus is based on the peculiarities of the copulatory apparatus structures, behavior, and biology of N. mogurndae. A comparative analysis of the copulatory apparatus peculiarities and their armaments in cestodes from different orders is discussed.

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Correspondence to J. V. Korneva.

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Original Russian Text © J.V. Korneva, N.M. Pronin, 2015, published in Biologiya Vnutrennikh Vod, 2015, No. 2, pp. 14–22.

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Korneva, J.V., Pronin, N.M. Fine structure of the copulatory apparatus of Nippotaenia mogurndae Yamaguti et Miyato, 1940 (Cestoda, Nippotaeniidea). Inland Water Biol 8, 113–120 (2015). https://doi.org/10.1134/S1995082915020091

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