| dipetalonema perstans and mansonella ozzardi in indians of southern venezuela. | microfilariae were observed in 25 of 187 blood leucocyte-culture preparations made for chromosome studies on 28 piaroa and 159 yanomama indians living near the brazilian border of amazonas, venezuela. among the yanomama, 17 (10.7%) were infected, all with mansonella ozzardi. among the piaroa, 8 (28.6%) were infected--3 with m. ozzardi, 4 with dipetalonema perstans, and 1 with both species. | 1976 | 769579 |
| experimental and natural infection of simulium sanchezi by mansonella ozzardi in the middle orinoco region of venezuela. | experimental and natural infections of simulium sanchezi by mansonella ozzardi were studied in the area of síquita, territorio federal amazonas, venezuela. the microfilariae developed synchronously in the blackflies, reaching stage l3 in seven to eight days at temperatures between 23 degrees and 27 degrees c. larvae in different stages of development, including infective forms, were found in 0.6% of 662 unfed wild-caught females. these results confirm that simuliids are the main vectors of m. oz ... | 1985 | 3887680 |
| environmental factors and the distribution of mansonelliases in southern venezuela. | the distribution of mansonelliases and their relation to various quantitative criteria were determined through the study of 1,057 subjects in 17 localities in ten regions of amazonas state and bolívar state. the total prevalence among the blood samples, determined through the knott technique, was 18.54%. 11.26% were parasited by mansonella perstans, 9.93% by mansonella ozzardi, and 2.63% by both species. the average of microfilaremia was 48.19 mf/ml of blood in m. perstans and 13.79 mf/ml in m. ... | 2000 | 10887651 |