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Development, growth and migration of Philophthalmus gralli (Trematoda) from Jordan in the eyes of chicks

  • Naim S. Ismail (a1) and Issam M. Issa (a1)


The growth of Philophthalmus gralli from jordan was studied experimentally by inoculating 10 excysted metacercariae around the right eye of 47 day-old chicks. The growth rate was slow in the first three days during which flukes did not exceed 0·30 mm long. Then growth become rapid reaching 2·70 mm long on day 24. This was followed by a low growth rate during which the flukes grew from 2·70 mm to 2·90 mm on day 40. The flukes started to appear in the left eye on the day 12 post-inoculation of metacercariae in the development of P.gralli from Jordan was the same as of other species of Philophthalmus. However, a sixth stage, post-maturation stage, is suggested in addition to the 5 developmental stages of Philophthalmus. The ratio of the transverse diameter of the ovary to that of testes in the post-maturation stage was 1:1·1–1:1·2.



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Alicata, J. E. (1962) Life cycle and developmental stages of Philophthalmus gralli in the intermediate and final hosts. Journal of Parasitology, 48, 4754.
Ching, H. L. (1961) The developmental variation of Philophthalmus gralli(Mathis & Leger 1910) with a comparison of species of Philophthalmus(Looss, 1899). Proceedings of the Helminthological Society of Washington, 28, 130138.
Colgan, G. J. & Nollen, P. M. (1977) Studies on growth, development, and infectivity of Philophthalmus hegeneri Penner & Fried 1963 in the chick. Journal of Parasitology, 63, 675680.
Fried, B. (1962) Growth of Philophthalmus sp. (Trematoda) in the eyes of chicks. Journal of Parasitology, 48, 395399.
Fried, B. & Penner, L. R. (1963) Exposure of chicks to the metacercaria of Philophthalmus hegeneri Penner 1963 in the chick. Journal of Parasitology, 49, 978980.
Ismail, N. S. & Issa, I. (In press) Life cycle of Philophthalmus gralli (Mathis & Leger, 1910) (Trematoda) in Azraq Oasis, Jordan. Japanese Journal of Parasitology.
Ismail, N. S. & Saliba, E. K. (1985) Studies on larval stages of digenetic trematodes of Melanoides tuberculata (Müller) snails from Azraq Oasis, Jordan. Rivista di parasitologia, 44, 263271.
Nollen, P. M. (1971) Studies on growth and infection of Philophthalmus megalurus (Cort, 1914) (Trematoda) in chicks. Journal of Parasitology, 57, 261266.
Nollen, P. M. (1983) The effects of adults of Philophthalmus gralli (Trematoda) growing in chickens. Journal of Parasitology, 69, 196199.
Nollen, P. M. & Murray, H. D. (1978) Philophthalmus gralli: infection, growth characterstics, and treatment of an oriental eye fluke of birds introduced into the continental United States. Journal of Parasitology, 64, 178180.
Penner, L. R. & Fried, B. (1963) Philophthalmus hegeneri sp.n., an ocular trematode from birds. Journal of Parasitology, 64, 974977.
Srivastava, S. C. & Pande, B. P. (1971) The eye fluke Philophthalmus gralli (Mathis & Leger,1910), in two anatid hosts with remarks on the genus. Indian Journal of Animal Sciences, 41, 470473.
Xu, P. R. (1981) On the epidemiology of Philophthalmus of domestic fowls in Guangdong province. Journal of South China Agricultural College, 2, 1927.
Zhongzhang, T., Qingquan, C., Xiumin, L., Yulin, W., Yucheng, H. & Chongti, T. (1980) Philophthalmus of domestic fowls in Fujian, China. Acta Zoologica Sinica, 26, 232242.


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Development, growth and migration of Philophthalmus gralli (Trematoda) from Jordan in the eyes of chicks

  • Naim S. Ismail (a1) and Issam M. Issa (a1)


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