TY - JOUR AU - Doanh, Pham Ngoc AU - Le, Nguyen Thi AU - Minh, Nguyen Thi AU - Ha, Nguyen Van PY - 2014/11/12 Y2 - 2024/03/29 TI - Prevalent infection of Paragonimus larvae in Yen Bai province JF - Academia Journal of Biology JA - AJB VL - 28 IS - 4 SE - Articles DO - 10.15625/0866-7160/v28n4.5334 UR - https://vjs.ac.vn/index.php/vjbio/article/view/5334 SP - 1-4 AB - <p>An investigation for the <em>Paragonimus</em> larvae infection was conducted in 12 villages of 8 districts belonging to the Yenbai province in 2005. <em>Paragonimus</em> metacercariae were found in 3 villages: Khanhhoa, Anlac (Lucyen district) and Ngoia (Vanyen district). Only one mountainous crab species <em>Potamiscus tannanti</em> Rathbun served as the second intermediate host of <em>Paragonimus</em> in study sites. The infective prevalence of <em>Paragonimus</em> metacercaria in crabs were quite high: the infection rate and density in the Khanhhoa village were 53.3% and 1-82 metacercaria/crab (average 28.8) respectively, in the Anlac village: 50% and 1-51 metacercaria/crab (average 19.2) and in the Ngoia village: 36.9% and 1-31 metacercaria/crab (average 14.2). The crabs <em>P. tannanti</em> in the Khanhhoa and Ngoia villages were infected with only metacercaria of <em>P. heterotremus</em> while this crab species in the Anlac village were concurrently infected with those of <em>P. heterotremus </em>and<em> Paragonimus</em> sp.. The infection of metacercaria of earlier species was higher than that of latter species. Only one snail species <em>Pseudotricula </em>sp. served as the first intermediate host of <em>Paragonimus</em> in the Yenbai province. The cercaria of <em>Paragonimus </em>was found at 0.5% of this snail in the Khanhhoa village, but not yet found in Anlac and the Ngoia villages.</p> ER -