The Shrimps fell to a narrow defeat against MK Dons in Sky Bet League One.
A Jonathan Leko strike 12 minutes after half time proved the difference between the two sides, to leave the Shrimps in 22nd place in the table, three points from safety, with seven games to play.
It was the hosts with the first chance in the opening minutes. Jonathan Leko wriggled away from his man before sending a low drive into the arms of Connor Ripley from the edge of the box.
Leko sent another effort over the angle, before Mo Eisa saw an effort saved to his right by Connor Ripley.
Morecambe had their first attempt through Ash Hunter, who shot wide from range, before the Shrimps had two efforts in quick succession blocked inside the box.
As the half wore on Eisa stung the palms of Ripley once again, before a Paris Maghoma effort was blocked by a Morecambe defender.
Defender Pape Souare, on his full debut for the club, found space at the far post from a Donald Love cross, but blazed a volley over the bar.
Morecambe were unlucky when they had another effort in first half stoppage time. The Shrimps broke forward quickly to the edge of the MK area, with the ball falling to Dan Crowley. The midfielder’s low drive was deflected off a defender, but spun just wide of the post with keeper Cumming rooted to the spot.
Half-time: MK Dons 0 Morecambe 0
Both sides started the second half brightly, with the Shrimps having the better of the opening exchanges, and a Weir free kick from the left just failing to be converted at the far post, before the hosts took the lead in the 57th minute.
Josh McEachran created the chance with a pass through to Daniel Harvie, who ran into the left side of the box, before pulling the ball back for Leko to finish smartly at the back post.
Morecambe threatened an immediate equaliser from a corner but Souare’s drive from 20 yards hit the outside of Cumming’s post, before Ash Hunter tested Cumming with a low drive from 20 yards.
At the other end, Leko was denied by a terrific save from Ripley, with Eisa unable to convert the rebound.
Morecambe made a triple change, bringing on Cole Stockton, Adam Mayor and Josh Austerfield, to try and find the equaliser, and Stockton nearly provided an assist to get back on terms in the last ten minutes, but his dangerous ball across the six yard box was well intercepted.
Will Grigg had an opportunity for MK two minutes from time, but the striker was denied from a tight angle by Ripley.
Full-time: MK Dons 1 Morecambe 0
MK Dons: Cumming, Watson, Lewington, Tucker, McEachran (Johnson 80'), Eisa (Grigg 73'), Leko (Holland 73'), Grant (Devoy 82'), Harvie, Lawrence, Maghoma.
Subs not used: Ravizzoli, Smith, Robson.
Goals: Leko (57').
Bookings: Maghoma.
Red cards: None.
Morecambe: Ripley, Love, Gibson, Crowley, Hunter (Watts 73'), Weir, Bedeau (Rawson 87'), Niasse (Stockton 60'), Shaw (Austerfield 61'), Souare (Mayor 61'), Simeu.
Subs not used: Smith, Delaney.
Goals: None.
Bookings: Simeu, Bedeau, Watts.
Red cards: None.
Attendance: 6,758 (206 away).