A COMPARATIVE STUDY OF HAEMOCYTES FROM RESISTANT AND SUSCEPTIBLE LYMNAEA NATALENSIS SNAILS EXPOSED TO FASCIOLA GIGANTICA MIRACIDIA
EL-SAYED, K., SAAD EL-DIN, A., GAD EL-KARIM, R. (2014). A COMPARATIVE STUDY OF HAEMOCYTES FROM RESISTANT AND SUSCEPTIBLE LYMNAEA NATALENSIS SNAILS EXPOSED TO FASCIOLA GIGANTICA MIRACIDIA. EKB Journal Management System, 44(3), 653-660. doi: 10.21608/jesp.2014.90155
KAMELIA A. EL-SAYED; ABDEL-HAKIM SAAD EL-DIN; RASHA M. GAD EL-KARIM. "A COMPARATIVE STUDY OF HAEMOCYTES FROM RESISTANT AND SUSCEPTIBLE LYMNAEA NATALENSIS SNAILS EXPOSED TO FASCIOLA GIGANTICA MIRACIDIA". EKB Journal Management System, 44, 3, 2014, 653-660. doi: 10.21608/jesp.2014.90155
EL-SAYED, K., SAAD EL-DIN, A., GAD EL-KARIM, R. (2014). 'A COMPARATIVE STUDY OF HAEMOCYTES FROM RESISTANT AND SUSCEPTIBLE LYMNAEA NATALENSIS SNAILS EXPOSED TO FASCIOLA GIGANTICA MIRACIDIA', EKB Journal Management System, 44(3), pp. 653-660. doi: 10.21608/jesp.2014.90155
EL-SAYED, K., SAAD EL-DIN, A., GAD EL-KARIM, R. A COMPARATIVE STUDY OF HAEMOCYTES FROM RESISTANT AND SUSCEPTIBLE LYMNAEA NATALENSIS SNAILS EXPOSED TO FASCIOLA GIGANTICA MIRACIDIA. EKB Journal Management System, 2014; 44(3): 653-660. doi: 10.21608/jesp.2014.90155

A COMPARATIVE STUDY OF HAEMOCYTES FROM RESISTANT AND SUSCEPTIBLE LYMNAEA NATALENSIS SNAILS EXPOSED TO FASCIOLA GIGANTICA MIRACIDIA

Journal of the Egyptian Society of Parasitology
Article 12, Volume 44, Issue 3, December 2014, Page 653-660  XML PDF (273.8 K)
Document Type: Original Article
DOI: 10.21608/jesp.2014.90155
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Authors
KAMELIA A. EL-SAYED1; ABDEL-HAKIM SAAD EL-DIN2; RASHA M. GAD EL-KARIM1
1Department of Medical Malacology, Theodor Bilharz Research Institute, Egypt.
2Department of Zoology, Faculty of Science, Cairo University, Egypt.
Abstract
Effect of infection with Fasciola gigantica on total and differential haemocytes count of resistant and susceptible Lymnaea natalensis snails were studied. Exposure of L. natalensis resistant and susceptible strains to F. gigantica on miracidia caused gradual increase in the number of circulating haemocytes at the same time of exposure. In susceptible strain, the increase in the number of circulating haemocytes became significant at the second week post exposure being 2560 cell/ml (p<0.05) in comparison with control group being 1760 cell/ml. While in resistant strains, the increase became significant at second, third and sixth weeks post exposure being 2660 cell/ml, 2500 cell/ml and 2360 cell/ml respectively,then a gradual decrease occurred. Examination of haemocytes obtained from L. natalensis snails revealed that haemolymph contained three morphological types of haemocytes, designated as round small, round large (hyalinoctyes) and granulocytes spreading. Their average percentage was 12.3±5.5%, 81.0±4.6% and 6.7±2.1% of total cells respectively. Data indicated that by the second day post exposure infected snails had significantly higher percentage of granulocytes than controls.
Keywords
Fasciola gigantica; Lymnaea natalensis; Circulating haemocytes; Susceptible snails; Resistant snails
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