BUENOS AIRES, July 3 (Reuters) - Argentine stocks fell near five-month lows on Thursday as investors continued to pocket profits from recent gains in energy-related shares, while bonds closed mixed, traders said.
The benchmark MerVal stock index .MERV shed 1.7 percent to end at 1,998.37 points, with index heavyweight Tenaris (TENA.BA) (TS.N) -- the world's top producer of seamless steel pipes for the energy industry -- losing 3.44 percent to close at 106.7 pesos per share.
"Profit-taking in Petrobras and Tenaris again pushed the MerVal lower," said Guido Macchi, a trade at Macchi brokerage.
Petrobras APBR.BA fell 3.4 percent to close at 104.66 pesos, helping push the MerVal to its lowest level since February 8 when it closed at 1,992.62 points.
Sagging regional markets and a drawn-out conflict between farmers and the Argentine government continues to cause uncertainty, Macchi added.
Elsewhere in the region, Brazilian stocks .BVSP fell for a third session, extending the worst slump since January as investors dumped shares of steelmakers Gerdau (GGBR4.SA) and Usiminas USIM5.SA, tracking a global slump in steel companies on concerns that slower demand will limit price increases.
Trade volume in Buenos Aires fell slightly to $34.4 million. Of active issues, 40 fell, 15 rose and 16 were unchanged.
On the local debt market, Argentine bonds <AR/BONOS> were mixed as investors continued to track the farm conflict.
Bonds rose 0.6 percent on average in over-the-counter trade, but the peso-denominated Par bond fell 1.9 percent while the dollar-denominated Par gained 1.8 percent.
On the foreign exchange market, the peso ARS=RASL weakened 0.25 percent to 3.025/3.0275 per dollar as private investors bought greenbacks along with the state-owned banks.
In informal trade between foreign exchange houses, as measured by Reuters, the peso slipped by 0.41 percent to close at 3.07/3.0725 per dollar ARSB=.
Reporting by Jorge Otaola and Walter Bianchi; Writing by Kevin Gray; Editing by Diane Craft