It's heavily implied that they are, several times they refer to Oryx as "oh ruler mine", and in on Oryx calls them dragons outright, The ahmkara dragons may have evolved from ahmkara worms the way the hive evolved from the krill

In "I'd shut them all in cells", Oryx views the Dragons as an affront to the Worms. He says that their gods should be their gods alone. There are two strong implications of this: That the Dragons are second-rate impostors of the Worms, or that the Dragons are also in a symbiotic relationship with the Worms and Oryx does not like how there is another species worshipping the Worms.