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A simple method for culturing neonatal Biomphalaria glabrata snails.

James D Vasta¹, Karen E Lesage, Bernard Fried

¹Department of Chemistry, Lafayette College, Easton, Pennsylvania 18042, USA.

The Journal of Parasitology

|April 22, 2011

Summary

A new method simplifies culturing Biomphalaria glabrata snails using Nostoc sp. cyanobacteria. This optimized diet ensures consistent snail growth and survival, comparable to standard lab conditions.

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Area of Science:

Aquatic biology
Microbiology
Malacology

Background:

Traditional methods for culturing Biomphalaria glabrata snails rely on complex and variable mud-based media for Nostoc sp. cultivation.
Inconsistent soil composition in traditional media leads to variations in Nostoc sp. growth and snail culture outcomes across laboratories.

Purpose of the Study:

To develop a simplified and reproducible method for culturing neonatal Biomphalaria glabrata snails.
To establish Nostoc sp. grown in Bg-11 medium as a reliable and exclusive food source for snail culture.

Main Methods:

Cultured Nostoc sp. using Bg-11 medium supplemented with sodium nitrate.
Fed neonatal Biomphalaria glabrata snails exclusively with cultured Nostoc sp.
Monitored snail growth rate, survival, and compared phenotypic characteristics to standard laboratory conditions.

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Main Results:

Neonatal snails fed Nostoc sp. exhibited a growth rate of 1-2 mm per week.
Survival rates were 60-80% after 2 weeks on the Nostoc sp. diet, increasing to nearly 100% after transfer to standard conditions.
Snails cultured with this method were phenotypically comparable to those under standard laboratory conditions.

Conclusions:

The Bg-11 medium method provides a simplified, consistent, and effective approach for culturing Nostoc sp. as a sole food source for neonatal Biomphalaria glabrata.
This simplified culture method supports healthy snail growth, survival, and development, making it suitable for laboratory use.