|Ian Bell scored 76|
Ian Bell reached 76 and Alaistar Cook notching up 67 was the only highlight of the innings for England.
"It was certainly under par," he told Sky Sports News. "But we have to give credit to Siddle. He bowled a brilliant spell.
On winning the toss:
"It was the right decision to bat but it did a bit today."
Bell came into the Test on the back of some impressive performances in the warm-up matches - including his 192 against Australia A in Hobart - and he paid tribute to England batting coach Graham Gooch for helping him improve his batting.
"It was nice to get runs on day one of an Ashes series and hopefully we come back tomorrow and have a good day," he said.
"The experience I have gained over the last couple of years I have put into my game recently and hopefully I can carry on this form for a while now.
"Graham Gooch has really helped my cricket. He has put some things into my game and hopefully I can carry on like this with my form now."