They would also lose centre-back Fabricio Coloccini to a groin injury before half-time.
Morrison was particularly impressive and was unlucky when the giant figure of Fabricio Coloccini managed to block his goalbound shot.
Elmander poked in and Davies scored his second penalty against a Newcastle side who had Fabricio Coloccini sent off for elbowing Elmander.
Newcastle, however, were nowhere near as convincing at the back and Fabricio Coloccini was regularly threatened with embarrassment by Gabriel Agbonlahor's raw pace.
Owen then saw a six-yard header saved by Jussi Jaaskelainen, who scrambled the ball away before Fabricio Coloccini could pounce to put in the rebound.
But Newcastle rallied and were firstly denied an equaliser when Joe Hart tipped Coloccini's long-range drive past the post before a superb strike from Gutierrez drew them level.
But Elmander restored the three-goal cushion with his eighth this campaign when he outmuscled a hapless Coloccini and raced into the area before beating the onrushing Dutch Magpies keeper.
Newcastle are short of defensive cover with just Fabricio Coloccini and Steven Taylor available as senior professionals at centre-back, while Danny Simpson has filled in, along with Thomas Kadar and Ben Tozer in reserve.
The alarms rang in the 18th minute when both Jose Enrique and Coloccini failed to clear under pressure from Lee in the left-corner before the ball fell to Bolton old-boy Nolan who handled in his attempt to ease the pressure.
Full of danger, Owen missed an simple chance from six yards and tested Kirkland with a header, though Wigan could have gone 2-0 up after Henri Camara raced past Fabricio Coloccini and saw his shot come back off the inside of the post.
Meanwhile suspension to the Magpies' regular centre-back pairing of Mike Williamson and Fabriccio Coloccini has opened the door to a first Premier League start in Newcastle colours for former Arsenal defender Sol Campbell, plus a first outing of the season for Steven Taylor.
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