نتایج جستجو برای: heterophyidae

تعداد نتایج: 232  

Journal: :Japanese journal of medical science & biology 1957
J ITO

The present paper reports three new echinostome cercariae with a review of known 18 spp. of Japanese echinostome cercariae. They were found from the brackish water snails collected from a muddy seashore at Urayasu during the past years from 1944 to 1952. One of these, Cercaria pseudo grani f era n. sp., bearing a strong resemblance to Cercaria grani f era Ogata, 1943, differed from it in detail...

Journal: :The Southeast Asian journal of tropical medicine and public health 2007
Masakazu Harada Pusadee Sri-aroon Chantima Lohachit Chigusa Fujimoto Arif-Ul- Hasan Rodney Itaki Setsuo Suguri Yupa Chusongsang Phiraphol Chusongsang

Intertidal snail-trematode communities in southern Thailand were examined before and after the South Asia tsunami. Infection rates and species diversity of cercaria in the host snail Cerithidea in tidal zones did not change significantly from one year before to one month after the tsunami. However, the host snails C. quadrata, C. alata and C. obtusa disappeared from greatly damaged sites. It is...

2013
O. O. Tolstenkov M. I. Zhukovskaya V. V. Prokofiev M. K. S. Gustafsson

Spontaneous electrical activity is recorded in two species of marine cercariae, Cryptocotyle lingua and Himasthla elongata, with different types of swimming-by glass microelectrode recordings. Slow local field potentials (sLFPs) of low amplitude and fast high amplitude action potentials (APs) are found. The shape of the sLFPs is different in the species and correlates with the type of swimming....

Journal: :International journal for parasitology 2005
Osamu Miura Armand M Kuris Mark E Torchin Ryan F Hechinger Eleca J Dunham Satoshi Chiba

Cryptic species of the digeneans, Cercaria batillariae (Heterophyidae) and an undescribed philophthalmid, were detected using polymerase chain reaction-based restriction fragment-length polymorphism methodology and sequence analyses. These digeneans were all collected from the same species of gastropod first intermediate host, Batillaria cumingi (=Batillaria attramentaria). The mitochondrial cy...

Journal: :The Southeast Asian journal of tropical medicine and public health 2001
K Sukontason N Boonsriwong U Chaithong K L Sukontason S Piangjai

The effects of trypsin, bile extract, temperature and acid-based condition for the in vitro excystation of Haplorchis taichui metacercariae were studied. At 37 degrees C, approximately half the number of metacercariae excysted when exposed to 1% trypsin for 15 minutes with no more excystation found beyond this time. Increasing trypsin concentration seemed to reduce the excystation rate while bi...

Journal: :The Korean journal of parasitology 2009
Megumi Sato Surapol Sanguankiat Somchit Pubampen Teera Kusolsuk Wanna Maipanich Jitra Waikagul

Quantitative fecal egg counts represented as the number of eggs per gram of feces (EPG) are generally a reliable parameter to estimate the worm burden of intestinal and hepatic parasitoses. Although Haplorchis taichui (Digenea: Heterophyidae) is one of the most common minute human intestinal flukes, little is known about the relationship between EPG and the actual worm burden in patients or the...

Journal: :The Korean journal of parasitology 2003
Woon-Mok Sohn Min Seo Jong-Yil Chai

The surface ultrastructure of Acanthotrema felis (Trematoda: Heterophyidae) adults, recovered from a kitten experimentally infected with the metacercariae, was observed using a scanning electron microscope. The worm was leaf-like, ventrally concave and covered with scale-like multi-pointed tegumental spines. The spines on the anterior surface were short but broad, and had 10-12 pointed tips. Th...

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