Effect of low concentrations of two plant extracts on the spermatozoon ultrastructure of three snail species. | ||||
| Delta Journal of Science | ||||
| Article 13, Volume 36, Issue 3, December 2013, Page 254-262 PDF (1.26 MB) | ||||
| Document Type: Research and Reference | ||||
| DOI: 10.21608/djs.2013.139788 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
| Mohammed F.A. Mansour; Sayed-Ahmed M. El-Tantawy; Heba M. Fala | ||||
| Zoology Department, Faculty of Science, Mansoura University, Egypt. | ||||
| Abstract | ||||
| The present study deals for the first time the effect of two plant extracts on the ultrastructure of the spermatozoa of three species of gastropod snails. These snails were the land snail Eobania vermiculata and two freshwater ones Lymnaea caillaudi and Biomphalaria alexandrina. They were collected from gardens and fruit trees (E. vermiculata) and Manzala Lake (L. caillaudi and B. alexandrina), Dakahlia Governorate, Egypt. The extracts used were of the plants Euphorbia milii and Ethulia coynzoides. The first was used for L. caillaudi and B. alexandrina and the second was used for E. vermiculata. The snails used for this purpose were those still alive after the exposure period to the plant extracts (28 dayes for E. vermiculata and 24 h for L. caillaudi and B. alexandrina). Examination of the longitudinal and transverse thin sections revealed that the genital cells gonadal follicles and the head and the neck region of the sperm were the most affected ones. This indicates that these snails become nearly sterile where the gonads become unable to produce spermatozoa or the liberated sperms become immotile having damaged mitochondrial derivatives and loose their viability. This effect on sperms can be considered as a new way to control the injurious snails to agriculture and can bring their population down to a low level within a reasonably short period of time. | ||||
| Keywords | ||||
| Calotropis procera; Pelargonium graveolens; Ethulia conyzoides Euphorbia milii; Lymnaea caillaudi; Biomphalaria alexandrina; Eobania vermiculata | ||||
|
Statistics Article View: 72 PDF Download: 144 |
||||
