Ovipositor of bitterling fishes (Cyprinidae, Acheilognathinae): fine structure from a functional perspective

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Authors

DYKOVÁ Iva REICHARD Martin

Year of publication 2023
Type Article in Periodical
Magazine / Source Journal of Vertebrate Biology
MU Faculty or unit

Faculty of Science

Citation
Web https://doi.org/10.25225/jvb.22070
Doi http://dx.doi.org/10.25225/jvb.22070
Keywords oviposition; brood parasitism; rodlet cells; Langerhans cells
Description The study presents fine structure data on the ovipositor of four bitterling species (Rhodeus ocellatus, Rhodeus amarus, Paratanakia himantegus and Acheilognathus barbatulus). In A. barbatulus and P. himantegus, ovipositor structure has never been studied. Novel data on the structure of the ovipositor were collected using two complementary methods, light- and transmission electron microscopy. The new findings relate to the covering and lining epithelia, basal laminae, cell junctions and supporting/connective tissue layer. All examined fish shared the same basic ovipositor structure and the newly reported details, regardless of their species affiliation. Evaluation of structure modifications related to the passage of eggs through the ovipositor revealed a range of transitional tissue changes, corroborating their presumable role inferred from the study of fine structure.
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