merchant of Venice Act 3 scene 1 what is the significance of salarino's speech

We get a look into Antonio's fading prospects and defaulting on his debt. We also learn that Shylock's daughter has left him. Solanio and Salerio discuss the rumor that Antonio has lost yet a second ship. Shylock enters and complains that both Solanio and Salerio had something to do with his daughter's flight. They do not deny it, but instead ask Shylock if he has heard about Antonio's losses.