Recent advances in DNA analysis allow us to identify an unprecedented number of insect samples collected by mass sampling techniques such as insect traps. In these circumstances, a preservative that can be applied from trap to storage is necessary to prevent degradation of DNA before analysis and save on the cost of labor for collecting insects from traps. Propylene glycol has a prominent feature as a trap solution. We aimed to examine the DNA preservability of 98% propylene glycol at 2 weeks and mor…
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