Port ruckman Paddy Ryder was also reportedly racially abused by a Crows supporter.

A 31-year-old woman, Maxinne Spratt, says she's received death threats after calling Betts an ape on social media stating that he "should go back to the zoo where him and his family belong".

Spratt said her comments were not racist "because I'm part Aboriginal myself".

"There's been a few people that want to smash my face in and beat me and my partner up," she told the Seven Network.

Port last year banned a female member for throwing a banana at Betts.

"The club takes the allegations very seriously and is investigating the claims with Adelaide Oval Stadium Management," Port said in a statement.

"Port Adelaide is also investigating claims that its own player Paddy Ryder was subject to racial taunts from an Adelaide Crows spectator."

Adelaide Crows chief executive Andrew Fagan said:

“Pour club strongly condemns any such behaviour and finds it abhorrent and disgusting".

"In listening to our playing group and our Aboriginal and Torres Strait Islander players in particular, it is clear how damaging and impactful racism is to them and their families.

"Our entire playing group and our club stand together on this, unequivocally."