Gregarine species (Apicomplexa) parasitic in the burrowing echinoid Echinocardium cordatum: occurrence and host reaction
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چکیده
منابع مشابه
The Life Cycle and Fitness of Gregarine (Apicomplexa)Parasites
Theoretical demographic models with an accompanying experimental program provide an important framework to study the life history of organisms. In this paper we seek to understand the fitness characteristics of gregarine parasites and how they are shaped by their own life cycle stages inside and outside an insect host. The population model is a continuous time dynamics for the parasite stages, ...
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Lecudina tuzetae is a parasitic protozoan (Gregarine, Apicomplexa) living in the intestine of a marine polychaete annelid, Nereis diversicolor. Using electron and fluorescence microscopy, we have characterized the dynamic changes in microtubule organization during the sexual phase of the life cycle. The gametocyst excreted from the host worm into seawater consists of two (one male and one femal...
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Aedes albopictus larvae collected in Gainesville, FL, were infected with the gregarine Ascogregarina taiwanensis. Natural prevalence varied from 68 to 100%. Eight mosquito species were tested in the laboratory for susceptibility to A. taiwanensis isolated from field-collected Ae. albopictus. Aedes aegypti, Aedes albopictus, and Aedes taeniorhynchus became 100% infected in the larval stage, wher...
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Reciprocal cross-stadia experimental infections were used to demonstrate stadium specificity within the gregarine assemblage parasitizing Tenebrio molitor, the yellow mealworm. Gregarina cuneata, Gregarina polymorpha, and Gregarina steini are characteristic parasites of larval T. molitor. Gregarina niphandrodes is a characteristic parasite of adult T. molitor. Experimental infections were produ...
متن کاملOccurrence of Perkinsus species (Protozoa, Apicomplexa) in bivalves from the Great Barrier
Bivalves from the Great Barrier Reef were examined for Perkinsus infection using the thioglycollate method (Ray 1966). They were taken from Heron, Lizard, Orpheus, North Direction and Thetford Reefs. Thirty of the 84 species examined were Infected (160 out of 644 individuals). They belonged to 23 families. The 4 most frequently infected families, in descending order, were Chamidae, Arcidae, Tri...
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ژورنال
عنوان ژورنال: Diseases of Aquatic Organisms
سال: 1986
ISSN: 0177-5103,1616-1580
DOI: 10.3354/dao002135