Before entering into the duties of the office, the county trustee shall take an oath to support the constitutions of this state and of the United States, and an oath of office. The county trustee shall execute an official bond in at least the minimum amount required by § 8-11-103. The county legislative body may by resolution require a greater amount of bond for the county trustee than the minimum required by § 8-11-103. The bond must be prepared, executed, filed, and recorded in accordance with title 8, chapter 19. The county legislative body may by resolution require that the county trustee enter into an additional bond at any time during the term of office of the county trustee.