ABSTRACT
A systemic streptococcal infection in cultured bullfrogs in Brazil was characterized by necrotizing splenitis and hepatitis with hepatic and renal hemorrhage. A non-hemolytic Group B Streptococcus appeared to be the cause of the lesions, and the stimulus for the splenic reticuloendothelial hyperplasia observed in the animals. Stress may have been a factor in the development of the pathological condition.
Subject(s)
Rana catesbeiana , Streptococcal Infections/veterinary , Animals , Brazil , Kidney/pathology , Liver/pathology , Spleen/pathology , Streptococcal Infections/pathology , Streptococcus agalactiaeSubject(s)
Amino Acids/analysis , Plant Proteins/analysis , Plants, Edible , Food Supply , Nutritive ValueABSTRACT
Bullfrog tadpoles subjected to the daily disturbance of water replacement demonstrated differences in the rates of growth and metamorphosis and in fatbody weights which depended on the time of day when water replacement occurred. Early daily disturbances stimulated larval growth whereas midday disturbances stimulated metamorphosis. The time when the daily disturbances caused fattening changed during metamorphosis so that younger tadpoles fattened when disturbed early in the photoperiod and older tadpoles fattened when disturbed at midday.
