A comparison of Toxocara canis embryonation under controlled conditions in soil and hair

Journal of Helminthology
Jason Devoy Keegan, Celia V Holland

Abstract

Toxocara spp. eggs require a period of time under appropriate environmental conditions to become infective to definitive and paratenic hosts. Temperature and humidity are important factors known to affect the levels of development in soil. We aimed to investigate whether the eggs of T. canis could embryonate in dog hair under controlled conditions of temperature and humidity and, if so, to what degree. No previous work had been carried out on embryonation in hair under controlled conditions. Soil samples exposed to the same conditions as the hair samples were considered a suitable comparison in order to investigate differing levels of development. Development at two temperatures (10°C and 20°C) and the addition of water to samples was investigated over a period of 8 weeks. Importantly, we demonstrated that unembryonated T. canis eggs are capable of development in hair under controlled conditions. The rate of development is lower than that observed in soil, but remains biologically significant in terms of the overall numbers of potentially infective embryonated eggs present. Temperature is responsible for the rate of embryonation while moisture is essential for encouraging development and maintaining egg viability in general. In...Continue Reading

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Jul 9, 2010·Veterinary Parasitology·Jason Devoy Keegan, Celia V Holland

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Citations

Aug 21, 2013·International Journal for Parasitology·Calum N L Macpherson
Sep 27, 2014·International Journal of Environmental Research and Public Health·Teresa Letra MateusMadalena Vieira-Pinto
Jan 24, 2013·Veterinary Parasitology·Christian Bauer
Aug 21, 2013·Acta Tropica·David Carmena, Guillermo A Cardona
Feb 5, 2015·Revista Do Instituto De Medicina Tropical De São Paulo·María Viviana BojanichJuan Ángel Basualdo
Oct 23, 2019·Animals : an Open Access Journal From MDPI·Maria Paola MaurelliLucia Francesca Menna
Dec 13, 2018·Journal of Parasitic Diseases : Official Organ of the Indian Society for Parasitology·S Sivajothi, B Sudhakara Reddy
Aug 24, 2017·Veterinary World·Tania O RojasGalia Sheinberg
Jun 14, 2018·Infectious Diseases of Poverty·Jia ChenHany M Elsheikha
Dec 20, 2019·PLoS Neglected Tropical Diseases·Ali RostamiRobin B Gasser

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