Open AccessLife cycle and morphology of development stages of Physocephalus dromedarii (Nematoda: Spirocercidae)
Author(s) -
Rolf K. Schuster,
S. Sivakumar,
Jörg Kinne
Publication year - 2016
Publication title -
asian pacific journal of tropical biomedicine/asian pacific journal of tropical biomedicine
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.507
H-Index - 61
eISSN - 2588-9222
pISSN - 2221-1691
DOI - 10.1016/j.apjtb.2016.08.001
Subject(s) - larva , biology , host (biology) , juvenile , veterinary medicine , zoology , botany , ecology , medicine
Objective: To study the development of Physocephalus dromedarii (P. dromedarii) in the final host.Methods: For this, 5 adult dromedaries were orally infected with third larval stages of P. dromedarii obtained from naturally infected scarab beetles (Scarabaeus cristatus). The camels were necropsied 14, 42, 70, 84 and 280 days after infection and their abomasi were examined for the presence of nematodes.Results: Early 4th stage larva occurred already 2 weeks after infection. They were still in the sheet of the 3rd stage larva. Six weeks after infection, the nematodes became juvenile male and female adults measuring 9 and 10 mm, respectively. Their size doubled at 10 weeks post infection and patency was reached at 12 weeks. P. dromedarii was still present in the camel that was examined 40 weeks after infection.Conclusions: As a result of experimental infection of the natural host, the determined prepatent period of P. dromedarii equalled 12 weeks