Matthew Wade will lead Australia in the Chappell-Hadlee one-day international series with New Zealand, while Sam Heazlett has been called up following Steve Smith's withdrawal through injury.
Regular captain Smith was ruled out of the three-match rubber on Friday, due to a medial ligament injury in his left ankle.
And although Australia's selectors considered reversing their decision to rest vice-captain David Warner, wicketkeeper-batsman Wade has now been handed the reins.
Interim national selector Trevor Hohns said: "We had a few options as captain in the absence of Steve Smith and vice-captain David Warner, but Matthew Wade was the logical option given his leadership experience with Victoria and the fact he is very much a leader within the group already.
"We did discuss the situation with David Warner, but after doing so the NSP [National Selection Panel] made the decision that it was in his best interests and in the best interests of the team that we continued with our original plan to give him a break for this series.
"That was our call and, that way, we will ensure David is fresh and ready to go in the build-up to the Test series in India that follows."
Wade, who recently returned to Australia's Test side at the expense of Peter Nevill, said: "Being asked to captain Australia is obviously not something I was expecting and it is still sinking in, but I am hugely honoured by the decision of the selectors and the board of directors and very excited about it."
Queensland and Brisbane Heat batsman Heazlett, who has yet to play a 50-over match for his state, replaces Smith in the touring party.
Hohns added: "Sam showed last summer what a talented player he is by averaging over 40 in his debut season at first-class level and he impressed again when playing for the National Performance Squad against A teams from Australia, South Africa and India in Townsville and Mackay during this past winter."