NDLI: Surface fine topography and PCR-based determination of metacercaria of Paragonimus sp. from edible crabs in Arunachal Pradesh, Northeast India

Content Provider	Springer Nature Link
Author	Tandon, V. Prasad, P. K. Chatterjee, A. Bhutia, P. T.
Copyright Year	2007
Abstract	In several mountainous regions of Northeastern India, foci of Paragonimus infection reportedly involving species that are known to prevail in China have been identified. The present study was undertaken to demonstrate the surface fine topography and sequence analysis of the ribosomal deoxyribonucleic acid (rDNA; second internal transcribed spacer, ITS2) of the metacercarial stages of the lung fluke collected from a mountain stream of the area (Miao, Changlang District in Arunachal Pradesh). The encysted metacercariae were oval in shape and had a smooth surface. The newly excysted metacercaria had a ventral sucker larger than the oral; the body surface was covered with numerous single-pointed and thorn-like tegumentary spines, of which those on the anterior part of the body were bigger in size and showed a gradual reduction in length and number towards the posterior end; dome-shaped papillae in variable numbers were seen around the rim of the oral sucker and were sparsely distributed all over the body surface. The polymerase chain reaction-amplified rDNA ITS2 sequences of the metacercariae were aligned with known sequences for the various species of Paragonimus, and the expectation value was found to be most significant with P. westermani, revealing an absolute match. The surface topography including the number and distribution of papillae and spination patterns and the ITS2 sequences of the metacercariae strongly suggest that the Paragonimus species, prevalent in the region of India, is in fact P. westermani.
Starting Page	21
Ending Page	28
Page Count	8
File Format	PDF
ISSN	09320113
Journal	Parasitology Research
Volume Number	102
Issue Number	1
e-ISSN	14321955
Language	English
Publisher	Springer-Verlag
Publisher Date	2007-09-01
Publisher Place	Berlin/Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Immunology Microbiology Medical Microbiology
Content Type	Text
Resource Type	Article
Subject	Infectious Diseases Veterinary Parasitology Insect Science

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