Related Experiment Video
Updated: Aug 17, 2026

Experimental Infection of Mice with the Parasitic Nematode Strongyloides ratti
Published on: January 17, 2025
Dermatitis in a dairy herd caused by Pelodera strongyloides (Nematoda: Rhabditidae)
1Hachaklait, Gedera and the Koret School of Veterinary Medicine, Department of Large Animals, The Hebrew University of Jerusalem, PO Box 12, Rehovot 76100, Israel.
Abstract:
A high rate (25%) of infestation of heifers in a dairy cattle herd caused by the saprophytic nematode Pelodera strongyloides is described. Management (crowded) and environmental conditions (moist and filthy) as well as the climate (temperature) apparently favoured the existence and continuation of the nematodes. These infested a large number of heifers by causing dermatitis in skin areas, which were in contact with the contaminated environment. The dermatitis is characterized by a marked thickening of the skin, which became wrinkled and scurfy with alopecia. Pruritus was not observed.
Related Concept Videos
Rocky Mountain Spotted Fever
Skin Diseases and Disorders
Gram-positive Staphylococcus spp. and Streptococcus spp. are responsible for many of the most common skin infections. However, many...
Giardiasis
Papillary Dermis
The dermis might be considered the "core" of the integumentary system, as distinct from the epidermis and hypodermis. It contains blood and lymph vessels, nerves, and other structures, such as hair follicles and sweat glands. The dermis is made of two layers of connective tissue that comprise an interconnected mesh of elastin and collagenous fibers, produced by fibroblasts.
Papillary Layer
The papillary layer is made of loose, areolar connective tissue, which means the collagen and...

