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Helminthologia
Volume 57 (2020): Numero 4 (December 2020)
Accesso libero
Ultrastructure and cytochemistry of the mature spermatozoon of
Khawia armeniaca
(Cholodkovsky, 1915) (Caryophyllidea: Lytocestidae), a parasite of
Capoeta capoeta sevangi
(De Filippi, 1865) (Teleostei, Cyprinidae)
M. Matoušková
M. Matoušková
,
M. Bruňanská
M. Bruňanská
,
J. Nebesářová
J. Nebesářová
e
L. G. Poddubnaya
L. G. Poddubnaya
| 19 nov 2020
Helminthologia
Volume 57 (2020): Numero 4 (December 2020)
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CONDIVIDI
Article Category:
Research Article
Pubblicato online:
19 nov 2020
Pagine:
353 - 360
Ricevuto:
05 feb 2020
Accettato:
09 lug 2020
DOI:
https://doi.org/10.2478/helm-2020-0040
Parole chiave
Cestoda
,
Caryophyllidea
,
spermatozoon
,
ultrastructure
© 2020 M. Matoušková, M. Bruňanská, J. Nebesářová, L. G. Poddubnaya, published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
Fig. 1
Cross sections of the mature spermatozoon of K. armeniaca: (a) vas deferens with five different regions of the spermatozoon (I-V); (b) region I presents one axoneme and six cortical microtubules; (c) region II shows cortical microtubules which are arranged in a semi-circle under the plasma membrane; (d-g) region III or nucleated region: small diameter of anterior part of the nucleus (d), which gradually increases (e), reaches a maximum in the middle part (f), and diminishes again more posteriorly (g); (h-j) region IV shows cortical microtubules which are arranged in two opposite rows (note one single microtubule in the middle between the two opposite rows) (h), rapidly reduced volume of cytoplasm and number of cortical microtubules (i, j); (k-l) region V with one axoneme which lost its central structure (k) and undergoes disorganization into doublets (l). Ax, axoneme; Arrowheads, attachment zones; BB, basal body of the cilium; CM, cortical microtubules; D, doublets; L, lamellae; N, nucleus. Scale bars: a = 1000 nm, b-h, l = 200 nm, i = 250 nm, j, k =125 nm.
Fig. 2
Granules of glycogen in the cytoplasm of the mature spermatozoon of K. armeniaca after application of Thiéry method (1967): (a) cross section of region II; (b) cross section of region III; (c) cross section of region IV; (d) longitudinal section of region II. Ax, axoneme; CM, cortical microtubules; G, glycogen; N, nucleus. Scale bars: a-c = 200 nm, d = 250 nm.
Fig. 3
Schematic reconstruction of the mature spermatozoon of K. armeniaca. I–V, five different regions of the mature spermatozoon; ASE, anterior spermatozoon extremity; Ax, axoneme; AZ, attachment zones; CC, central core; CM, cortical microtubules; G, glycogen; N, nucleus; PM, plasma membrane; PSE, posterior spermatozoon extremity.
Variation of the maximum number of cortical microtubules (CM) in the spermatozoa of the Caryophyllidea.
Families
Genus Species
CM
References
Capingentidae
Breviscolex orientalis
15
Yoneva et al., 2011
Caryophyllaeidae
Archigetes sieboldi
11
Bruňanská et al., 2019
Caryophyllaeus laticeps
15
Bruňanská & Kostič, 2012
Glaridacris catostomi
Świderski & Mackiewicz, 2002
Hunturella nodulosa
10
Yoneva et al., 2012a
Wenyonia virilis
30
Gamil, 2008
Lytocestidae
Atractolytocestus huronensis
Bruňanská et al., 2011
Caryophyllaeides fennica
19
Matoušková et al., 2018
Khawia armeniaca
35
present study
Khawia rossittensis
22
Matoušková et al., 2019
Khawia sinensis
15
Bruňanská, 2009
Lytocestus indicus
25
Yoneva et al., 2012b
Monobothrioides chalmersius
40
Arafa & Hamada, 2004
Anteprima