The effects of mergers in low mass galaxies are poorly understood. In this
paper we analyze different observational evidences which support the view t
hat mergers can trigger starbursts in dwarf galaxies. We discuss the relati
onships between blue compact galaxies (BCGs), dIs, dEs and low surface brig
htness galaxies (LSBGs) and present some evidences which favour that strong
starbursts are caused by mergers between dEs and LSBGs.