Good photo, but no data on the antennas to determine if they could be used with the Mantis remote. You need to post brand and model number or info from the stat sheet for anyone to make a determination.
So you could use one of them where the 2.4GHz antenna is used. But you will need one tuned for 5GHz to extend the camera feed range. You may want to get input from @MCDC on this matter, he seems to know a bit about the Mantis Q/G.