Fruit Flies pp 95-102 | Cite as

Field Evaluation of a Medfly Genetic Sexing Strain in Hawaii

  • D. O. McInnis
  • R. I. Vargas
Conference paper


As reported in previous IAEA research coordination meetings in Vienna (1985, 1987) and in Crete, Greece (1986, 1988), we have been working with Ceratitis capitata (Wiedemann)(medfly) genetic sexing strains based upon sexual differences in pupal coloration (Robinson, 1982). One of these strains, Hawaiianized Robinson (RHW), was created through repeated backcrossing of translocation-bearing Robinson males with standard Hawaii mass-production females. This strain has proven itself superior to the pure, imported sexing strain (wp-23) we received from Dr Alan Robinson (IMBB laboratories, Crete, Greece) in a number of important fitness parameters, including: field cage mating competitiveness, field dispersal and longevity, and rearing efficiency. The hybrid sexing strain also has fared well against the standard bisexual laboratory strain (HI LAB) which has been in mass production for ca. 30 years.


Release Point Coffee Berry Ceratitis Capitata Pupal Size Genetic Contamination 
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  1. Robinson, A.S. and Van Heemert, C. 1982. A suitable case for genetic sexing. Genetica 58: 22937.CrossRefGoogle Scholar
  2. Tanaka, N. Steiner, L.F. Ohinata, K. and Okamoto, R. 1969. Low-cost larval rearing medium for mass-production of Oriental and Mediterranean fruit flies. J. Econ. Entomol. 62: 967–968.Google Scholar

Copyright information

© Springer Science+Business Media New York 1993

Authors and Affiliations

  • D. O. McInnis
  • R. I. Vargas

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