England's bowlers earned their reward for a hard day in the field at the WACA after Marcus Trescothick became the latest member of their Ashes squad to suffer an injury scare.

Aiming to make a amends for a disappointing batting display when they were dismissed for 221 on the first day of two yesterday, it was the bowlers' turn to try and adapt to conditions against a Western Australian line-up missing eight first-team players.

They began badly with Andrew Caddick, Steve Harmison and Matthew Hoggard all struggling to find the right line and length for Australian wickets as Mike Hussey and Chris Rogers compiled a century opening partnership.

With news that Trescothick had visited a local doctor for a pain-killing injection on his right shoulder also filtering through, it looked likely that England's troubles since their arrival in Perth would continue.

But, just as Hoggard made the first breakthrough shortly before lunch, England's fortunes improved off the pitch too with news that Trescothick's injury was not as serious as first thought.

By the end of the two-day practice match, WA had progressed to 313-6 - with Shaun Marsh, the 20-year-old son of former Australian opener Geoff, standing out as another massive talent coming off the local production line with a superb 92.

Caddick followed up Hoggard's success by claiming England's second wicket just two overs after lunch removing Rogers, who hit seven boundaries in his enterprising 57 before also edging behind to wicketkeeper James Foster, who had taken over from Alec Stewart in mid-morning.

Four overs later, the Somerset fast bowler had Murray Goodwin mistiming to Harmison at deep fine-leg.

But it was another 31 overs before England claimed a further success when left-arm spinner Ashley Giles, who had received some early punishment from Hussey, took his first wicket with Marcus North pushing forward and edging straight to John Crawley at short leg for an entertaining 38.

England received further reward for their gruelling efforts in the hot sun in the final session when Harmison ended Marsh's superb innings, which included 15 boundaries, when he edged to Mark Butcher at slip.

Kade Harvey then fell to Hoggard in identical fashion.

Shane Warne reckons that he can break the 500-wicket barrier against England during the Ashes series.

Speaking after he finished Australia's three-Test series against Pakistan with a record 27 wickets at 12.67, Hampshire's captain, who now has 477 Test scalps, said: "The main aim for me now is to get in to England straight away. "

Warne, 33, could not resist a dig at England's middle order. The Aussies are known to be unimpressed with John Crawley, who was caught by former Bashley wicketkeeper Luke Ronchi for a duck as England struggled against Western Australia yesterday.

"I think it all depends on the top order," added Warne. "If Marcus Trescothick, Michael Vaughan and Mark Butcher play well, they could make big runs.

"If they don't it will expose the middle order and a couple of dodgy techniques and hopefully we can knock them over pretty cheaply."