Thermal effect on the life-cycle parameters of the medically important freshwater snail species Lymnaea (Radix) luteola (Lamarck)

• Published in: Memórias do Instituto Oswaldo Cruz
• Main Authors: Md Abdul Aziz, SK Raut
• Format: Article in Journal/Newspaper
• Language: English
• Published: Instituto Oswaldo Cruz, Ministério da Saúde 1996
• Subjects: Lymnaea (Radix) luteola; life-cycle parameters; temperature; food; pH; salinity; India; Arctic medicine. Tropical medicine; RC955-962; Microbiology; QR1-502; Arctic; Lamarck
• Online Access: https://doi.org/10.1590/S0074-02761996000100022; https://doaj.org/article/5f486491d69d41c58ede6d69068988db

The snails Lymnaea (Radix) luteola exhibited marked variations in growth, longevity, and attaining sexual maturity at different temperatures and diets. At 10°C, irrespective of foods, pH and salinity of water, the snails had minimum life span, maximum death rate and lowest growth rate. At 15°C, the growth rate was comparatively higher and the snails survived for a few more days. But at these temperatures they failed to attain sexual maturity. Snails exposed to pH 5 and 9 at 20°, 25°, 30°, 35°C and room temperatures (19.6°-29.6°C); to 0.5, 1.5 and 2.5 NaCl ‰ at 20° and 35ºC; to 2.5 NaCl ‰ at 25°C and room temperatures failed to attain sexual maturity. The snails exposed to pH 7 and different salinity grades at 20°, 25°, 30°, 35°C and room temperatures became sexually mature between 25-93 days depending upon the type of foods used in the culture.