Adult males of Mus musculus each infested with four first-instar (L1) larvae of Dermatobia hominis (Linneaus, Jr.) were used as donors of larvae to other mice (recipients). Larvae at four (L1), six (early L2), 12 (L2), or 20 (L3) days postinfestation (dpi), were implanted into the skin of each recipient. Only two of 38 mice (5.3%) were refractory to implants and three died after implantation. Developmental times (pre- plus postimplantation) of implanted larvae were of similar duration to those in larvae that completed their development in the original mice. The L3 that emerged from implanted hosts developed to pupae and fertile adult specimens, whose L1 descendants were used to maintain the D. hominis life cycle in our laboratory. The model described here has several potential applications, including studies of the host relationship with specific instars and the development of management and control measures to combat this Neotropical myiasis.
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Vol. 47 • No. 1