Which technique is used to test for screwworms?

The technique utilized to test for screwworms primarily involves molecular testing. This method is highly effective for identifying specific genetic markers associated with the screwworm species, allowing for accurate detection and monitoring. Molecular testing uses techniques such as polymerase chain reaction (PCR) to amplify DNA sequences unique to screwworms, facilitating precise diagnosis.

While visual inspection can sometimes identify larvae or adult screwworms in infected animals, it is not a definitive testing method, as it relies heavily on the observer’s skill and experience in recognizing these pests among other fly species. Culturing bacteria is also unrelated to the detection of screwworms, as these parasites are not bacteria. Therefore, the appropriate response to identifying screwworms is indeed molecular testing, making the other options unsuitable for this specific context.