Genésio Pacheco, Brazilian bacteriologist and veterinarian (São Fidelis, Rio de Janeiro State 05 May 1890 – Rio de Janeiro 06 February 1973)
Authored about 300 publications
DISCOVERIES
Discovered Pacheco disease of parrots
With O. Bier. Epizootie chex les perroquets du Brésil. Relations avec Le psittacose. C.R. Séance Soc. Biol. 105:109-111, 1930
Discovered a new disease affecting freshwater fishes being caused by an ultra virus
Doença de peixes fluviaes do Brasil. Mem. Inst. Oswaldo Cruz 30(3):327-71, 1935
Showed an unknown type of fuchsinophilic granulation in genus Corynebacterium (1933)
METHODS
With A. Godoy modified the method for preparing Litmus whey by using a kaolin for facilitating the filtration (1924)
A new way to prepare Petruschky milk serum
With A. Godoy. Nouveau mode de préparation du petit-lait de Petruschky. C.R. Soc. Biol. 90:243, 1924
Developed a rapid method for laboratorial diagnosis of bacillary dysentery in 24 hours (1927)
Developed a new device used for bloodletting in great animals
Novo aparelho para sangria de grandes animais. Arq. Inst. Biol. 2:137-40, 1929
With J. Toledo de Mello. Novo methodo para pesquisa do hydrogenio sulfurado nas culturas bacterianas. Annaes Fac. Med. S. Paulo 7(2):93, 1932
Created a conservation method for staining fluids (1936)
Proposed an economic method of marking Guinea pigs and rabbits (1937)
With A. Trejos. Influence of pyocyanine on staphylocoagulase with a method for determining pyocyanine. Bras. Med. 59:169, 1945
With M.T. de Mello. A urease test for the differentiation of Brucella suis. J. Bacteriol. 59:689-91, 1950
With C. Rodrigues modified Rothberger culture medium
Modified Barsiekow culture medium
Developed Pacheco-Mello agar medium
DESCRIBED TAXA
Helminths
Genus Chiostichorchis 1932 with Artigas
Chiostichorchis myopotami 1932 with Artigas
Dipetalonema travassosi 1933 with Artigas
Pudica maldonadoi 1933 with Artigas
Bacteria
Actinobacillus psittacosis 1934
Brucella evansi 1933
Proteus americanus 1928
Salmonella nocardi 1931
Shigella hissrusselli 1930 with Rodrigues
Protozoa
Trypanosoma myocastori 1934 with Artigas