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As the human lifespan has increased dramatically in recent decades, the amount of aging research has correspondingly increased. To investigate mechanisms of aging, an efficient model system is required. Although mammalian animal models are essential for aging studies, they are sometimes inappropriate due to their long lifespans and high maintenance costs. In this regard, insects can be effective alternative model systems for aging studies, as insects have a relatively short lifespan and cost less to maintain. Many species of insects have been used as model systems for aging studies, especially fruit flies, silkworm moths and several social insects. Fruit flies are most commonly used for aging studies due to the wide availability of abundant resources such as mutant stocks, databases and genetic tools. Silkworm moths are also good tools for studying aging at the tissue level due to their relatively large size. Last …