Persistence of the invasive bird-parasitic fly Philornis downsi over the host interbreeding period in the Galapagos Islands oleh Mariana Bulgarella, M. Piedad Lincango, Paola F. Lahuatte, Jonathan D. Oliver, Andrea Cahuana, Ismael E. Ramírez, Roxanne Sage, Alyssa J. Colwitz, Deborah A. Freund, James R. Miksanek, Roger D. Moon, Charlotte E. Causton, George E. Heimpel