Exploitative body PO duplicitous with trader? (8)

I believe the answer is:

predator

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'trader?' is the definition.
The definition and answer can be both people as well as being singular nouns.
Maybe there's a link between them I don't understand?

I cannot understand how the rest of the clue works.

Can you help me to learn more?

(Other definitions for predator that I've seen before include "Marauder" , "kite, for example" , "One seeking victim" , "eagle, say" , "Animal that eats others" .)

I've seen this clue in The Independent.

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