A. MOUAHID, N. BOUHADDIOUI, M. JANA, C. COMBES, H. MONE; EFFECT OF DIFFERENT MOLLUSC ASSOCIATIONS ON TARGET MOLLUSC GROWTH AND PARASITE CERCARIAL PRODUCTION IN THE TRIPLE SYSTEM: BULINUS WRIGHTI-SCHISTOSOMA BOVIS AND MELANOPSIS PRAEMORSA. J Molluscan Stud 1992; 58 (4): 349-355. doi: 10.1093/mollus/58.4.349
The influence of different mollusc associations in the triple system: Bulinus wrighti (target mollusc: TM)—Schistosoma bovis (parasite)—Melanopsis praemorsa (non-target mollusc: NTM) is analysed. The results show that: (i) for a TM/NTM density ratio of 1/1, the NTM stimulates both growth of the TM and parasite cercarial production; (ii) for a TM/NTM density ratio of 1/5, the effects of the NTM on TM growth and cercarial production were not additive and were less marked than for the 1/1 ratio. Hypotheses on a chemical explanation for these density-dependent effects are discussed.