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Obtaining Ilyanassa snail embryos.

Maey Gharbiah¹, James Cooley, Esther M Leise

¹Department of Molecular and Cellular Biology, University of Arizona, Tucson, AZ 85721, USA.

Cold Spring Harbor Protocols

|February 12, 2010

Summary

This summary is machine-generated.

This study details a reliable protocol for inducing and collecting marine snail embryos year-round. This method enhances the utility of Ilyanassa obsoleta as a model organism for developmental biology research.

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Area of Science:

Marine Biology
Developmental Biology
Embryology

Background:

Ilyanassa obsoleta is a key model organism for spiralian embryonic development.
It is valuable for studying asymmetric cell division, metamorphosis, and environmental contaminant effects.
The marine gastropod offers opportunities for both classic embryological and molecular studies.

Purpose of the Study:

To present a protocol for inducing and collecting Ilyanassa obsoleta embryos.
To ensure a consistent supply of embryos for research throughout the year.
To facilitate studies in developmental biology and related fields.

Main Methods:

Inducing zygote deposition in Ilyanassa snails via temperature manipulation.
Collecting embryos from induced spawning.
Maintaining snails in cold conditions (4-8°C) to postpone spawning.
Rearing embryos to the desired developmental stage.

Main Results:

Established a method for year-round embryo production in the laboratory.
Demonstrated the ability to induce spawning before the natural season and postpone it for up to 6 months.
Ensured the availability of high-quality embryos for experimental use.

Conclusions:

The described protocol significantly enhances the usability of Ilyanassa obsoleta as a model organism.
Consistent embryo availability supports ongoing and future research in marine gastropod development.
This method provides a valuable resource for embryological and toxicological studies.