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A simple method for shipping field collected mosquitoes for electrophoretic studies
O P Perera1, S K Narang, J A Seawright
1Insects Affecting Man and Animals Research Laboratory, Agricultural Research Service, Gainesville, FL 32604.
Journal of the American Mosquito Control Association
|June 1, 1990
Summary
Preserve field-collected mosquitoes for electrophoresis using an ice-salt mixture at -20°C. This method allows for over 9 days of storage in a thermos, maintaining enzyme activity for laboratory analysis.
Area of Science:
- Entomology
- Biochemistry
- Laboratory techniques
Background:
- Electrophoresis requires high-quality biological samples.
- Preserving field-collected specimens, such as mosquitoes, is crucial for accurate laboratory analysis.
- Traditional preservation methods may lead to degradation of enzymes and loss of critical data.
Purpose of the Study:
- To describe a simple and effective method for preserving field-collected mosquitoes in a frozen state for subsequent electrophoresis.
- To evaluate the duration of preservation and its impact on enzyme activity.
- To provide an improved method for transporting biological samples from the field to the laboratory.
Main Methods:
- Utilizing a mixture of ice and salt to achieve a freezing temperature of -20°C.
- Storing field-collected mosquitoes in an ordinary thermos bottle.
- Replacing the ice-salt mixture every 3 days to maintain the freezing temperature.
Main Results:
- Mosquitoes were successfully preserved in a frozen condition for 9 or more days.
- No loss of enzyme activity was observed during the storage period.
- The method proved effective in maintaining sample integrity for electrophoresis.
Conclusions:
- The described ice-salt mixture method provides a reliable way to preserve mosquitoes for electrophoresis.
- This technique significantly improves the ability to transport biological samples from field collection sites to laboratories without compromising sample quality.
- The method is cost-effective and practical for researchers working in remote locations.