Studies on the life-cycle of Ornithodiplostomum ptychocheilus (Faust) (Trematoda: Strigeoidea) and the self-cure of infected fish.
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چکیده
منابع مشابه
Migration and site selection of Ornithodiplostomum ptychocheilus (Trematoda: Digenea) metacercariae in the brain of fathead minnows ( Pimephales promelas).
The migration of subadult parasites to preferred sites within final hosts is well characterized. In contrast, the migration of larval stages of trematodes to specific sites within their second intermediate hosts is poorly understood. We used a serial necropsy approach to characterize the migration of Ornithodiplostomum ptychocheilus diplostomules from the point of cercarial penetration, to ency...
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Haplorchis taichui is parasitic heterophyidae(trematoda) which lives in the intestinal mucosa of its main host and producing heterophyidosis,which is a zonootic diseases.subsequent to the authors, provious studies which were made on parasit,s lift cycle in nature in Khuzestan province,Iran,this experimental study was performed with the aim of establishing the parasite,s lift cycle in laborat...
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Parasites that rely on trophic transmission can manipulate the behavior of an intermediate host to compromise the host's antipredator competence and increase the probability of reaching the next host. Selection for parasite manipulation is diminished when there is significant risk of host death to causes other than consumption by a suitable definitive host for the parasite. Consequently, behavi...
متن کاملDevelopment and intensity dependence of Ornithodiplostomum ptychocheilus metacercariae in fathead minnows (Pimephales promelas).
Intensity-dependent development of Ornithodiplostomum ptychocheilus metacercariae was studied in fathead minnows (Pimephales promelas) exposed to 0, 20, or 120 cercariae. Subsamples of hosts were necropsied at 2-wk intervals to monitor parasite recruitment, growth, and time to encystment. The complex development of metacercariae within the cranium of minnows involved growth, encystment, and con...
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Parasitism imposes a fitness cost on hosts. Risk of parasitism can be expected to vary spatially, which should result in corresponding variation in parasite intensity in hosts that occupy areas of high risk. Here, we studied spatial variation in infection intensity of a small fish, the fathead minnow, infected by metacercariae of the trematode Ornithodiplostomum ptychocheilus (Op). Adult Op res...
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ورودعنوان ژورنال:
- The Journal of parasitology
دوره 44 4, Section 1 شماره
صفحات -
تاریخ انتشار 1958