Effects of chitosan and emamectin benzoate on the reproductive system of Eobania vermiculata (Muller) land snails
| Autor: | Esam A. Eweis, A. Mobarak Soha, M. T. Nada Abbas, Mohamed A. Kandil |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Veterinary medicine
Population Plant Science Snail 010501 environmental sciences Biology 01 natural sciences Chitosan lcsh:Agriculture chemistry.chemical_compound biology.animal Eobania vermiculata medicine Reproductive system Emamectin benzoate Steroidal hormones education 0105 earth and related environmental sciences education.field_of_study Ecology Ovotestis lcsh:S Reproduction system 04 agricultural and veterinary sciences biology.organism_classification Biopesticide medicine.anatomical_structure chemistry Insect Science 040102 fisheries 0401 agriculture forestry and fisheries Agronomy and Crop Science Penis |
| Zdroj: | Egyptian Journal of Biological Pest Control, Vol 30, Iss 1, Pp 1-8 (2020) |
| ISSN: | 2536-9342 |
| DOI: | 10.1186/s41938-020-00224-1 |
| Popis: | The reproductive system of snails represents essential organ that affects snail population size. Therefore, the present research was directed to evaluate the effect of two biopesticides chitosan (Ch) and emamectin benzoate (EMB) LC50on the reproductive system ofEobania vermiculata(Muller). Land snails were treated using thin-film layer technique. Snails were dissected and organs of reproductive system were weighted and examined for any pathological changes at 24, 48 and 72 h post treatment. Moreover, steroidal hormones were determined after 72 h of treatment with either chitosan or emamectin benzoate in comparison to untreated snails. Results revealed that the penis and dart sac increased in size, while ovotestis was decreased at the 3 different periods than the same organs of untreated snails. In addition, there was swelling in the size of some organs, i.e penis and vagina. While there was stunting in the albumen gland at 72 h of treatment with Ch or EMB. However, histological examination showed damage of the ovotestis and atrophy of induced cells in the dart sac and penis. The incidents of both compounds on the level of steroidal hormones gave fluctuating results, either increasingly or decreasingly. In conclusion, data emphasize that both tested compounds caused reduction in the numerical density of theE. vermiculatareproductive system and consequently decreased their fertility, as well as reduction in its population. |
| Databáze: | OpenAIRE |
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