STRONGYLOIDES-FULLEBORNI . ENVIRONMENTAL FACTORS AND FREE-LIVING GENERATIONS

In fecal cultures of Strongyloides fülkborni inoculated with a known number of eggs, the proportion of filariform larvae to dioecious adults can be changed by changing the conditions of the cultures. Adults developed in thick feces. They also developed on thinly spread feces if carbon dioxide was increased and oxygen decreased. Successive generations of females occurred. These females reproduced only when males of the first generation were present. Females of the later generations differed slightly in morphology from those of the first generation. © 1969.