Olivo lunged at Guerrero during a pitching change in the seventh inning of the Isotopes’ game against the Salt Lake Bees on Tuesday morning, apparently upset over Guerrero’s attempt at a tag during a stolen base earlier in the inning.Olivo went after Guerrero again in the Albuquerque dugout between innings. The 35-year-old catcher bit off part of Guerrero’s ear as the fight escalated. Teammates, coaches and even an umpire tried to break up the fracas, causing a delay in the game.The injury comes at an inopportune time for the 27-year-old infielder, who played the last two games at shortstop after spending the offseason and all of spring training preparing for a job at second base. Guerrero leads the Dodgers’ Triple-A affiliate with a .376 batting average. He had also recently been taking ground balls at third base.Guerrero signed a four-year, $28 million contract with the Dodgers last October after successfully defecting from Cuba.With Guerrero shelved, shortstop Erisbel Arruebarrena was recalled from Double-A Chattanooga to take the big-league roster spot of injured third baseman Juan Uribe. Arruebarrena, a Cuban defector who is considered major-league ready in the field, hit safely in six of his last seven games at Chattanooga to raise his batting average to .208. Newsroom GuidelinesNews TipsContact UsReport an Error Dodgers prospect Alex Guerrero remained in a Salt Lake City-area hospital Wednesday, one day after a portion of his left ear was bitten off by Albuquerque Isotopes teammate Miguel Olivo.Guerrero hasn’t decided whether or not to press criminal charges against Olivo, according to a source, and might not for some time as he continues to recuperate. Guerrero required plastic surgery Tuesday to re-attach the missing portion of his ear.The injury is considered long-term; according to one report he could miss up to five weeks. In the meantime, Olivo was suspended Wednesday by the Isotopes “pending the completion of an investigation into the dugout altercation during yesterday’s game at Salt Lake.” The Dodgers signed Arruebarrena to a five-year, $25 million contract in February. He didn’t appear in Wednesday’s game.Uribe strained his right hamstring running the bases Tuesday and was placed on the 15-day disabled list.Also …The Dodgers made one other transaction Wednesday, optioning right-handed reliever Chris Withrow to Triple-A to make room for starter Hyun-Jin Ryu on the active roster.Withrow has a 2.95 ERA in 20 appearances with the Dodgers this season, while limiting opponents to a .143 batting average with 28 strikeouts in 21.1 innings. He’s also walked at least one batter in 11 of his last 15 appearances.