Portsmouth slipped to a club record ninth consecutive defeat at the hands of Bournemouth, who moved to within a point of the League One summit.
Adam Reed went close for Pompey while Patrick Agyemang, one of three debutants, headed wide from six yards.
But Lewis Grabban, who had earlier hit the crossbar with a header, swept in Josh McQuoid's pass for the Cherries.
Marc Pugh made sure of victory for his side when he latched on to Brett Pitman's pass and slotted home.
Portsmouth are now second from bottom, 11 points adrift of safety.
VIEWS FROM THE DRESSING ROOM
Bournemouth manager Eddie Howe told BBC Radio Solent:
"We prepared for it all week, we knew what type of game it would be, and full credit to Portsmouth because they came here with the game plan that we expected. Even though you know it's coming it's still difficult to conquer it and to break them down was difficult, I thought they defended really well."
On the build-up to the first goal: "I thought Josh [McQuoid] played a really big part in it, and then Grabbs [Lewis Grabban] had a lot of time to wait and to pick his spot but he's done that very well for us. A really important goal, that one."
On being on 55 points, one point off top spot: "That's good to know, good to hear. We're taking it a step at a time. It's a big victory today - it was the same three points available today as it was last week and everyone had us down as a home banker and that's never easy. We had a lot of pressure on us and I thought the players adapted very well to that."
Portsmouth caretaker manager Guy Whittingham told BBC Radio Solent:
"You're not pleased when you lose, but I'm pleased with the effort we put in and the discipline we showed the majority of the time.
"We just lost that little bit second half where we just started coming into the game and causing them some problems defensively.
"We went a little bit too far forward and lost our discipline at the back and got caught out.
"It's a huge achievement for us to be competitive at this moment in time. I think everybody's doing all they can and we need to keep doing that for our great fans."
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Live Text Commentary
Full Time The referee blows for the end of the match.90:00 +1:44
Liam Walker takes the inswinging corner, save made by Shwan Jalal.90:00 +1:15
Matt Tubbs takes a shot. Save made by Simon Eastwood.90:00 +0:40 Substitution
Substitution Brett Pitman goes off and Shaun MacDonald comes on.89:47
Steve Cook takes the free kick.89:47 Booking
Booking Adam Reed is booked.89:40
Foul by Adam Reed on Eunan O'Kane, free kick awarded.86:56
Foul by James Keene on Josh McQuoid, free kick awarded. Direct free kick taken by Steve Cook.85:22
Unfair challenge on Liam Walker by Brett Pitman results in a free kick. D Butler takes the free kick.85:07
Josh McQuoid crosses the ball.83:55
Josh McQuoid takes the direct free kick.83:55 Booking
Booking D Butler is booked.83:39
Free kick awarded for an unfair challenge on Josh McQuoid by D Butler.82:50 Substitution
Substitution Richard Hughes joins the action as a substitute, replacing Harry Arter.81:14 Substitution
Substitution Lewis Grabban leaves the field to be replaced by Matt Tubbs.81:14 Substitution
Substitution Liam Walker is brought on as a substitute for Shaun Cooper.79:16
John Akinde takes a shot. Save by Shwan Jalal. Inswinging corner taken right-footed by Adam Reed from the left by-line to the near post,78:16
The ball is delivered by Yassin Moutaouakil, clearance made by Steve Cook. James Keene is penalised for handball and concedes a free kick. Shwan Jalal takes the free kick.76:15
Assist on the goal came from Brett Pitman.76:15 Goal scored
Goal! - Marc Pugh - Bournem'th 2 - 0 Portsmouth Marc Pugh finds the back of the net with a goal from deep inside the penalty box to the bottom right corner of the goal. Bournemouth 2-0 Portsmouth.
Matt Ritchie produces a cross, D Butler makes a clearance.73:33
Adam Reed challenges Josh McQuoid unfairly and gives away a free kick. Matt Ritchie crosses the ball from the free kick left-footed from right wing, clearance by D Butler.72:51
Centre by D Butler, Daniel Seaborne makes a clearance.72:11
The ball is delivered by James Keene, Steve Cook gets a block in. Corner from the left by-line taken by Adam Reed, clearance by Brett Pitman.68:54
The ball is delivered by Lewis Grabban.68:08 Substitution
Substitution Jed Wallace joins the action as a substitute, replacing Therry Racon.65:51
Free kick awarded for a foul by Therry Racon on Marc Pugh. Eunan O'Kane takes the direct free kick.65:20
D Butler crosses the ball, Eunan O'Kane makes a clearance.64:55
Centre by D Butler, clearance by Daniel Seaborne.64:22 Substitution
Substitution Patrick Agyemang leaves the field to be replaced by James Keene.63:38
Marc Pugh produces a right-footed shot from just outside the area that goes wide left of the goal.62:02
Assist by Josh McQuoid.62:02 Goal scored
Goal! - Lewis Grabban - Bournem'th 1 - 0 Portsmouth A goal is scored by Lewis Grabban from the edge of the penalty area low into the middle of the goal. Bournemouth 1-0 Portsmouth.61:36
The ball is delivered by Adam Reed, Daniel Seaborne makes a clearance.60:07
The referee blows for offside against John Akinde. Shwan Jalal takes the free kick.59:40
Inswinging corner taken right-footed by Adam Reed played to the near post, Brett Pitman makes a clearance.59:16
Inswinging corner taken by D Butler from the right by-line, clearance by Brett Pitman.59:02
D Butler takes a shot. Save made by Shwan Jalal.58:55
The ball is sent over by Therry Racon.56:35
The ball is delivered by Simon Francis, Gabor Gyepes manages to make a clearance.55:46
Patrick Agyemang gives away a free kick for an unfair challenge on Eunan O'Kane. Steve Cook takes the free kick.55:00
Lewis Grabban is ruled offside. Simon Eastwood takes the free kick.54:04
The ball is swung over by Yassin Moutaouakil, Header by Ricardo Rocha from deep inside the penalty area misses to the left of the target.53:27
Brett Pitman takes the inswinging corner, save by Simon Eastwood.52:20
Yassin Moutaouakil challenges Marc Pugh unfairly and gives away a free kick. Brett Pitman fires a strike on goal direct from the free kick, save by Simon Eastwood.51:37
Foul by John Akinde on Marc Pugh, free kick awarded. Harry Arter takes the free kick.49:54
A cross is delivered by Josh McQuoid, Adam Reed gets a block in. Brett Pitman gives away a free kick for an unfair challenge on Shaun Cooper. Simon Eastwood restarts play with the free kick.49:14
Adam Reed takes a shot from just outside the penalty area clears the crossbar.47:50
Simon Francis crosses the ball, clearance made by Ricardo Rocha.46:33
The ball is swung over by Simon Francis, Brett Pitman produces a right-footed shot from the edge of the box and misses to the left of the goal.45:40
The ball is delivered by Lewis Grabban, save by Simon Eastwood.45:01
The second half kicks off.45:00 +1:59 Half time
Half Time The half-time whistle blows.45:00 +0:32
The ball is crossed by D Butler.45:00 +0:02
The ball is delivered by Matt Ritchie, clearance by Johnny Ertl.44:43
The ball is crossed by Simon Francis, Brett Pitman takes a shot.42:52
The referee blows for offside against Brett Pitman. Direct free kick taken by Simon Eastwood.42:24
Foul by Yassin Moutaouakil on Marc Pugh, free kick awarded. Shwan Jalal takes the direct free kick.39:24
Adam Reed takes a shot. Save by Shwan Jalal. D Butler takes the inswinging corner, Brett Pitman manages to make a clearance.36:43
Effort on goal by Lewis Grabban from inside the area goes harmlessly over the bar.35:54
Simon Francis sends in a cross, blocked by D Butler.35:01
Therry Racon takes a shot from just outside the penalty area clears the crossbar.33:46
Centre by Josh McQuoid, Johnny Ertl manages to make a clearance.32:42
A cross is delivered by Steve Cook, Shaun Cooper manages to make a clearance. Matt Ritchie takes a shot. Shaun Cooper gets a block in.31:43
Unfair challenge on Eunan O'Kane by John Akinde results in a free kick. Steve Cook takes the free kick.31:03
Centre by Matt Ritchie, Eunan O'Kane takes a shot. Save by Simon Eastwood.30:03
Harry Arter takes a shot from 20 yards. Clearance made by Gabor Gyepes.28:19
The ball is crossed by Marc Pugh.27:25
The ball is swung over by Shaun Cooper, Daniel Seaborne makes a clearance.26:42
Inswinging corner taken by Adam Reed, clearance by Daniel Seaborne.26:19
A cross is delivered by Matt Ritchie, Gabor Gyepes manages to make a clearance.22:19
The referee penalises Brett Pitman for handball. Direct free kick taken by Simon Eastwood.20:50
Free kick awarded for an unfair challenge on Ricardo Rocha by Lewis Grabban. Free kick taken by Simon Eastwood.20:22
A cross is delivered by Marc Pugh, Lewis Grabban takes a shot. Blocked by Ricardo Rocha.19:11
Patrick Agyemang has an effort at goal from the edge of the area that misses to the right of the target.17:42
A cross is delivered by Patrick Agyemang.16:16
Matt Ritchie delivers the ball, Therry Racon gets a block in.14:51
Centre by Simon Francis, Yassin Moutaouakil manages to make a clearance.12:14
Josh McQuoid crosses the ball.10:42
Matt Ritchie crosses the ball.10:03
Adam Reed challenges Harry Arter unfairly and gives away a free kick. Eunan O'Kane restarts play with the free kick.9:18
A cross is delivered by Marc Pugh, Lewis Grabban produces a header from the edge of the box and misses to the left of the target.7:09
John Akinde sends in a cross.6:19
The assistant referee signals for offside against Brett Pitman. Simon Eastwood restarts play with the free kick.5:22
The ball is delivered by Marc Pugh, blocked by Shaun Cooper. Outswinging corner taken by Matt Ritchie.4:00
Free kick awarded for a foul by Shaun Cooper on Harry Arter. Free kick taken by Brett Pitman.3:20
Therry Racon gives away a free kick for an unfair challenge on Matt Ritchie. Free kick taken by Shwan Jalal.2:20
Adam Reed is ruled offside. Shwan Jalal takes the direct free kick.1:53
Marc Pugh produces a left-footed shot from the edge of the area and misses to the left of the goal.1:42
The ball is crossed by Simon Francis, clearance by Ricardo Rocha.1:01
Brett Pitman takes a inswinging corner from the left by-line played to the near post, Ricardo Rocha manages to make a clearance.0:00
The game gets underway.
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