Morphometry Of The Digestive Gland Of Terrestrial Mollusks Cornu Aspersum (Gastropoda, Helicidae)
Author
Tybinka, A. M.
Author
Zaitsev, O. O.
Author
Zakrevska, M. V.
Author
Blishch, H. I.
Author
Shchebentovska, O. M.
text
Zoodiversity
2020
2020-03-02
54
1
75
88
http://dx.doi.org/10.15407/zoo2020.01.075
journal article
10.15407/zoo2020.01.075
2707-7268
6377578
Table 1. Morphometric parameters of digestive gland parenchyma (N = 15 specimens)| Parameter | М | SE | CV |
|---|
| Part of parenchyma with digestive ducts, % | 79.8 | 4.29 | 20.8 |
|---|
| Part of parenchyma with connective tissue, % | 20.2 | 1.05 | 20.1 |
|---|
| Number of digestive ducts per mm2 of digestive gland | 28.8 | 0.83 | 11.2 |
|---|
| Digestive gland cross-section area, µm² | 27 700.9 | 2012.3 | 28.1 |
|---|
| Digestive duct lumen area, µm² | 929.5 | 225.8 | 94.1 |
|---|
| Digestive duct wall area, µm² | 26 771.4 | 1845.1 | 26.7 |
|---|
| Length of muscular elements between digestive ducts, µm | 59.7 | 6.52 | 42.3 |
|---|
| Width of muscular elements between digestive ducts, µm | 1.41 | 0.23 | 63.2 |
|---|
| Number of Calcium cells on the cross-section of a duct | 4.5 | 0.38 | 32.7 |
|---|
| Area of all Calcium cells on the cross-section of a duct, µm² | 4155.8 | 392.5 | 36.6 |
|---|
| Share of the digestive duct’s wall occupied by Calcium cells, % | 15.5 | 0.94 | 23.5 |
|---|
| Mean area of a Calcium cell, µm² | 923.5 | 61.4 | 25.7 |
|---|
| Number of vacuoles on the cross-section of a digestive duct | 15.0 | 1.19 | 30.7 |
|---|
| Number of vacuoles per mm2 of digestive gland | 432.0 | 38.9 | 34.9 |
|---|
| Number of vacuoles with brown granules on cross-section of a digestive duct | 11.9 | 1.09 | 35.5 |
|---|
| Number of vacuoles with brown granules per mm2 digestive gland | 336.8 | 31.4 | 36.1 |
|---|
| Share of the gland cross-section occupied by brown granules, % | 2.2 | 0.09 | 15.8 |
|---|
| Total thickness of capsule, µm | 30.6 | 0.94 | 11.9 |
|---|
| including:: |
|---|
| muscle layer, µm | 19.0 | 0.87 | 17.7 |
|---|
| collagen layer, µm | 4.0 | 0.33 | 32.0 |
|---|
| epithelial layer, µm | 6.6 | 0.31 | 18.2 |
|---|
| height of epithelial microciliae of capsule, µm | 1.0 | 0.05 | 19.4 |
|---|
| Area of muscle fiber cross-section of the capsule, µm² | 10.0 | 1.21 | 46.9 |
|---|
| Percentage of muscle fibers in the muscle layer of the capsule, % | 48.2 | 2.76 | 22.2 |
|---|
| Percentage of collagen fibers in the muscle layer of the capsule, % | 15.1 | 0.80 | 20.5 |
|---|