Parramatta prop Michael Vella says he's ready to shoulder more responsibility in the absence of captain Nathan Cayless, who was ruled out for up to two months today with a broken arm.

The Eels suffered a setback on Sunday when Cayless underwent x-rays which revealed he had broken the arm in Saturday night's win over the Wests Tigers.

The 25-year-old has had the arm put in plaster and is expected to miss at least six weeks.

It's a savage blow to the struggling club, which has had a slow start to the season but looked to be hitting its straps against the Tigers.

Cayless' injury adds to a worrying list at the club, with Nathan Hindmarsh (ankle) and winger Luke Burt (shoulder) expected to be sidelined for four weeks and five-eighth Adam Dykes (Achilles) missing the Tigers clash.

Dykes should return to the Parramatta side this week.

The 25-year-old Cayless was at his inspirational best against Wests, making 19 tackles and 12 hit-ups as the Eels registered their second win of the season.

"He'll be missed by the team," Vella said.

"He's a good captain and a good player.

"He's just one of those guys that's tough and aggressive on the field and very skilful.

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