The Baltimore Opera Company has filed for bankruptcy.According to court records, the 58-year-old company filed for Chapter 11 bankruptcy Tuesday. Deborah Goetz, senior director of marketing and communications, says the board of trustees voted to file for bankruptcy Dec. 4. The company has struggled as ticket sales and donations have dwindled. The last two productions of the season, “The Barber of Seville” and “Porgy and Bess,” have been canceled. Tickets won’t be refunded. Goetz says the company plans to continue raising money for future productions. The opera company is the latest arts institution to feel the effects of the lagging economy. Declining revenues recently forced the Baltimore Chamber Orchestra to cancel its January events.