ISSN Print: 2381-1250  ISSN Online: 2381-1269
AASCIT Journal of Bioscience  
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Morphotaxonomy, Histopathology and Population Dynamics of Natural Enoplid Infections in Wild Rat, Rattus rattus of Eastern Uttar Pradesh, India
AASCIT Journal of Bioscience
Vol.4 , No. 3, Publication Date: Nov. 6, 2018, Page: 22-27
676 Views Since November 6, 2018, 413 Downloads Since Nov. 6, 2018
 
 
Authors
 
[1]    

Sushil Kumar Upadhyay, Department of Biotechnology, Maharishi Markandeshwar (Deemed to be University), Mullana-Ambala, India.

 
Abstract
 

Rodents are shared primary or intermediate or paratenic hosts for number of helminthes fauna and may serve as valuable indicators for assessing the occurrence, level of environmental contamination and infection pressure of the nemic parasites. During ten years (2008-2018) extensive study regarding the epidemiology of nemic infestation in population of wild rats Rattus rattus (Mammalia: Rodentia) from urban areas of eastern Uttar Pradesh, India, adult enoplid roundworms, Trichuris spp. (Nematoda: Enoplea) were recovered from intestine. However, bunch of barrel-shaped bipolar eggs and considerable pathological changes observed in hepatic tissue. The worms were characterized as Trichuris spp. by typical whip like body, cuticle with fine transverse striations, narrow cephalic end, indistinct oral papillae and dorsally curved caudal end with subterminal anus. The male worms with slender well cuticularized, distally sharp and pointed spicule, however, females had non-protrusible muscular vulva and long monodelphic uterus. The bioecological investigations by the application of modern numerical tools reflected that about 68.3% of the rat populations were found to be infected and had female to male nemic ratio (FMR) 7.38 in spring and 5.11 during winter season. The spatial distribution dynamics of Trichuris spp. in rodent hosts was over dispersed and found to be significant on Poisson series (p<0.50). The present study also described younger rats to be more resistant than the older one to infections by Trichuris spp. The correlation of feeding habits with size of the host played a major role in heavier infection due to greater intake of resources, potentially capable of exposing these hosts which played a major role to more infectious stages of parasites through stochastic ingestion.


Keywords
 

Morphotaxonomy, Trichuris Spp., Histo-Pathology, Infection Distribution, Rattus rattus


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