Canine heartworm disease in Porto Velho: first record, distribution map and occurrence of positive mosquitoes - Ogawa, Guilherme Maerschner; Cruz, Edson Neves da; Cunha, Príscila Nayara Araújo; Camargo, Luís Marcelo Aranha (Revista Brasileira de Parasitologia Veterinária, 2013)