scholarly journals SHELLS OF MOLLUSCS FROM MOTORONYN HILLFORT

2019 ◽  
Vol 31 (2) ◽  
pp. 255-258
Author(s):  
I. O. Balashov ◽  
O. D. Mogylov
Keyword(s):  
Helix Pomatia ◽  
Land Molluscs

The shells of 3 land molluscs’ species are found in the historical layer of VI—V century B.C. from the Motronyn hillfort of the Scythian age (Chyhyryn district of Cherkasy region, Ukraine): Helix pomatia, Austrotachea vindobonensis and Fruticicola fruticum. All these species are known to still occur in this area. Since it was disputable whether the H. pomatia was recently introduced in the Dnipro area, an evidence of its presence for at least 2400 years in this region is notable. Nature of damage to the shell of H. pomatia indicates that it was probably used for food by humans.

Reproduction of the Roman snail (Helix pomatia L.) from a local natural population in farm conditions and in a natural habitat

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Maciej Ligaszewski ◽  
Przemysław Pol
Keyword(s):  
Natural Population ◽  
Natural Habitat ◽  
Local Population ◽  
Helix Pomatia ◽  
Second Phase ◽  
Animal Reproduction ◽  
Snail Helix Pomatia ◽  
June July ◽  
A Site

AbstractThe aim of this study was to compare the quality of clutches and reproduction results of two groups of Roman snails (Helix pomatia) from the same local population, laying eggs simultaneously in semi-natural farm conditions and in a natural habitat. The study material were Roman snails aged 2 or more years which had entered the third phenological season of their life and thus the first season of sexual maturity. Observations were conducted at an earthen enclosure in a greenhouse belonging to the experimental farm for edible snails at the National Research Institute of Animal Reproduction in Balice near Kraków (Poland) as well as at a site where a local population naturally occurs in the uncultivated park surrounding the Radziwiłł Palace. In the June-July season, differences among such parameters as weight of clutch, number of eggs in clutch, mean egg weight, and hatchling percentage when compared to the total number of eggs in the clutch were compared. It was determined that clutches of eggs from the natural population laid in the greenhouse were of lesser weight (P<0.01), contained fewer eggs (P<0.05), and the mean weight of individual eggs was less (P<0.05) than in clutches laid simultaneously in a natural habitat. Both in the greenhouse and the natural habitat, in the first phase of laying eggs (June) the weight of the clutch and number of eggs its contained were greater than in the second phase (July). However, only for snails laying eggs in the greenhouse were these differences statistically significant (P<0.05) and highly significant (P<0.01), respectively. Statistically significant differences were not observed in hatchling percentage between eggs laid in the greenhouse and the natural habitat. The lower number of eggs laid in the farmed conditions of the greenhouse was successfully compensated for by the absence of mass destruction by rodents which occurred in the natural habitat.

Glycosylation of developing human glomeruli: lectin binding sites during cell induction and maturation.

1987 ◽  
Vol 35 (1) ◽  
pp. 33-37 ◽  
Author(s):  
H Holthöfer ◽  
I Virtanen
Keyword(s):  
Binding Sites ◽  
Mesangial Cells ◽  
Ricinus Communis ◽  
Lectin Binding ◽  
Helix Pomatia ◽  
Cell Types ◽  
Basement Membranes ◽  
Phenotypic Change ◽  
Neuraminidase Treatment ◽  
Nephron Development

Expression of cellular glycoconjugates during differentiation of human fetal kidney was studied using fluorochrome-labeled lectins. Each lectin revealed a characteristic binding pattern during the phenotypic change of the nephrogenic mesenchyme and during distinct stages of nephron development. The uninduced mesenchymal cells were positive for Pisum sativum (PSA), Concanavalin A (ConA), Wistaria floribunda (WGA), and Ricinus communis (RCA-I) lectins. However, these lectins failed to react with the uninduced cells of the S-shaped bodies, whereas Maclura pomifera (MPA), Triticum vulgaris (WGA) and, after neuraminidase treatment, Arachis hypogaea (PNA) agglutinins bound intensely to the presumptive podocytes. During later stages of nephrogenesis, MPA positively on the podocytes weakened and could not be observed in adult kidney glomeruli. Binding sites for Helix pomatia (HPA) agglutinin in glomeruli were also expressed only transiently during nephrogenesis. During further development PSA, ConA, WFA, and RCA-I reacted with mesangial cells in addition to the glomerular basement membranes. The segment-specific lectin binding patterns of the tubuli emerged in parallel with the appearance of brush border and Tamm-Horsfall antigens of the proximal and distal tubuli. The results show that nephron site-specific saccharides appear in a developmentally regulated manner and in parallel with morphologic maturation of the nephron. Lectins therefore appear to be useful tools for study of induction and maturation of various nephron cell types.

scholarly journals Endemic land molluscs in Georgia (Caucasus): how well are they protected by existing reserves and national parks?

2014 ◽  
Vol 80 (1) ◽  
pp. 67-73 ◽  
Author(s):  
Levan Mumladze ◽  
Robert A. D. Cameron ◽  
Beata M. Pokryszko
Keyword(s):  
National Parks ◽  
Land Molluscs
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