* Asia shares ex-Japan down 5 pct in past two weeks
* Dollar steady, but vulnerable to payrolls data
* Oil bounces as Canada wildfires threaten production
* Turkish markets hit by political uncertainty
By Marc Jones
LONDON, May 5 (Reuters) - European stocks and oil prices snapped a four-day losing streak on Thursday and a rally in bond markets fizzled out as investors began to position themselves for U.S. jobs data.
The pan-European FTSEurofirst 300 index .FTEU3 , which had fallen 1.2 percent to its lowest level in nearly a month in the previous session, rebounded 0.3 percent as firmer oil prices helped lift the region's big producers.
Asian shares failed to avoid a seventh day of falls but there was a feeling of relief that at least the yen JPY= looked to have settled following a searing run this month that has sent it to an 18-month high. FRX/
Prime Minister Shinzo Abe said on Wednesday that Japan would act if necessary to weaken the yen, while the dollar has been supported by data which has fanned optimism that the U.S. economy could bounce back after nearly stalling this year.
The dollar was holding at 107.10 yen JPY= in European trading, above the recent 18-month trough of 105.55 but a long way from last week's peak of 111.88.
The euro changed hands at $1.1454 EUR= , having been as high as $1.1614 this week from a low of $1.1213 in April. Against a basket of currencies the dollar was up 0.3 percent at 93.456 .DXY .
In commodity markets, industrial metals including copper and iron ore nursed more losses. Oil bounced as a huge wildfire in Canada disrupted oil sands production and escalating fighting in Libya threatened the North African nation's output. O/R
Brent crude LCOc1 was quoted 71 cents higher at $45.33 a barrel, while U.S. crude CLc1 added 89 cents to $44.67.
Bond markets had noticeably cooler feel, having seen one of their sharpest rallies of the year so far over the last week.
Yields on 10-year German Bunds and U.S. Treasury notes edged up to 1.179 and 0.208 percent receptively having both just hit their lowest in two weeks US10YT=RR DE10YT=RR . EUR/GVD
The gap between Italian and German government borrowing costs hit its widest level in nine weeks however, after Rome announced an unscheduled bond exchange and investors readied for a series of political events in Europe.
Stalled talks between Greece and its international creditors over financial aid, as well as Spanish elections and Britain's referendum on EU membership next month have led investors to reduce their exposure to riskier assets.
"There is a bit of (debt) supply to be absorbed this week and market sentiment is poor...so we are cautious on the direction for the periphery and expect more volatility," Mizuho strategist Antoine Bouvet said.
TALKING TURKEY
Turkish stocks fell and bond yields surged after officials said overnight the ruling party was set to replace Prime Minister Ahmet Davutoglu at an extraordinary congress in coming weeks. decision, confirmed to Reuters by five AK Party officials, came after a meeting of more than 1-1/2 hours between Davutoglu and President Tayyip Erdogan that followed weeks of public tension between the two men.
The lira bounced over 1.4 percent to 1.915 per dollar TRY= in volatile early deals in Istanbul but that was preceded by a three-day pounding that was one of its worst in decades.
"The political environment is very unpredictable, and this will certainly have negative repercussions for Turkey's risk premium, financial volatility and macroeconomic outlook," Finansbank said in a note.
The seventh straight dip for Asian shares overnight followed mixed economic data that did nothing to assuage concerns about global growth.
The latest survey from China showed the service sector expanded at a slower pace in April, though firms did resume adding staff. Caixin/Markit services purchasing managers' index (PMI) dropped to 51.8, from 52.2 in March, but at least stayed in growth territory. Hong Kong's version of the PMI slid into a deeper contraction to touch an eight-month low.
The patchy outcomes left Shanghai stocks .SSEC flat while trade across the region was stifled by a holiday in Japan.
MSCI's broadest index of Asia-Pacific shares outside Japan .MIAPJ0000PUS eased 0.3 percent, and has now shed 5 percent in just two weeks.
Wall Street also slipped amid mixed data.
The vast U.S. services sector expanded in April as new orders and employment accelerated, offering hope economic growth would rebound after a sluggish first quarter. other figures showed private employers hired the fewest workers in three years, sparking concerns the all-important payrolls report might also disappoint.
Friday's jobs figures are forecast to show a solid gain of 202,000 in April with unemployment steady at 5 percent.
"I think what has taken place more than anything else over the past 48 hours is the questioning of the reflation trade that was starting to be latched on by many, especially when you consider the recent price action in the USD, commodities and equities," CitiFX analysts said in a note.