Enabling Technologies for the Expansion of SIT for Old and New World Screwworm


Assess the geographical distribution of the Old World Screwworm (OWS) and the genetic relations of populations from South East Asia to the Middle East. Develop an OWS genetic sexing strain.


A very successful area-wide programme for the eradication of the New World Screwworm (NWS) has been carried out in North and Central America. A Thematic Plan for both NWS and OWS (Old World Screwworm) identified several technical constraints for the further expansion of SIT for these two species and these formed the core of this new CRP. Any expansion of the NWS programme into the Caribbean and South America will require information on the target populations in that large area where very little is known concerning the distribution and levels of population isolation. In addition, the size of the populations to be targeted and the area over which they are distributed will require that economies be made in fly production and release costs. One way to achieve this would be to develop a genetic sexing strain. For SIT to be effectively developed for the OWS much data is needed on distribution and the genetic relationships of populations from S. E. Asia to the Middle East. The CRP addressed these high priority areas.


Five Contract Holders from: Brazil, Indonesia, Iran, Uruguay, Venezuela, and five Agreement Holders from: Sweden, UK (2), USA (2).


  • The final Evaluation Report summarizes achievements under this five-year CRP (2002-2006), and shows the list of publications prepared during the CRP by participating researches.
  • The Final Proceedings of this CRP were published in a special issue of the journal Medical and Veterinary Entomology [pdf] which include a collection of 16 peer-reviewed scientific publications.