Indoplanorbis exustus

Nghiên cứu đã xác định được 9 loài ốc, 9 giống, 6 họ đã được thu và phân loại gồm có: Pomacea canaliculata (57,4%), Bithynia siamensis (18,5%), Melanoides tuberculata (8,5%), Filopaludina sumatrensis (6,6%), Indoplanorbis exustus (3,8%), Lymnaea viridis (3,7%), Thiara scabra (1,0%), Idiopoma umbilicata (0,5%) và Cipangopaludina chinensis (0,1%). Hai loài ốc nhiễm cercariae là Bithynia siamensis và Lymnaea viridis với tỉ lệ nhiễm lần lượt là 9,6% và 6,9%. Ba nhóm cercariae tìm được gồm có Xiphidio cercariae, Echinostome cercariae và Cystophorous cercariae.

11p kimphuong1141 16-11-2023 5 3   Download

During the present study, mitotic chromosomes of two freshwater snails Gyraulus ladacensis and Indoplanorbis exustus were analyzed using ovotestis of specimens collected from the type locality (Nud pond Samba, Jammu), both belonging to class Gastropoda, order Basommatophora and family Planorbidae. The observed diploid chromosome number was 2n=36 consisting of 14 metacentric pairs, 03 submetacentric pairs and 01 subtelocentric pairs and 18 pairs of metacentric pairs respectively. Meiotic observations comprised leptotene, zygotene, pachytene, diplotene and diakinesis stages.

8p trinhthamhodang1213 30-05-2020 11 0   Download

The present study was intended to delineate the Anti Helminthis and Molluscicidal activity of Momordica dioica fruit extract. The crude extract was obtained by the employment of Soxhlet extraction method. The extract was used to screen the antagonistic activity in vitro by taking Pheretima posthumous and Indoplanorbis exustus as the study subjects. The results obtained proved the capability of extract to downregulate the biological activities of subjects. Mortality was induced by varying concentrations (100-1000 ppm/ml).

6p trinhthamhodang5 16-05-2020 12 1   Download