| host stadium specificity in the gregarine assemblage parasitizing tenebrio molitor. | 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 produced in all homologous host-parasite combinations. no infection was produced in heterologous or cross-st ... | 1992 | 1556647 |
| the life cycle of gregarina cuneata in the midgut of tribolium castaneum and the effects of parasitism on the development of insects. | tribolium castaneum herbst 1797 (coleoptera: tenebrionidae), an important pest of stored grains and byproducts, is naturally infected by gregarina cuneata stein 1848 (apicomplexa: gregarinidae). changes in the life cycle of insects caused by the parasite development in the midgut were studied. trophozoites, gamonts (solitary and associated), and gametocysts were present in the midgut of the insects. in young trophozoites, the apical region differentiated into an epimerite that firmly attached th ... | 2016 | 26781173 |
| morpho-functional characterization and esterase patterns of the midgut of tribolium castaneum herbst, 1797 (coleoptera: tenebrionidae) parasitized by gregarina cuneata (apicomplexa: eugregarinidae). | tribolium castaneum (coleoptera: tenebrionidae) is a common pest of stored grains and byproducts and is normally infected by gregarina cuneata (apicomplexa: eugregarinidae). the life cycle of this parasite includes the sporozoite, trophozoite, gamont, gametocyte, and oocyst stages, which occur between the epithelium and lumen of the host's midgut. this study aims to describe the morphofunctional alterations in the midgut and determine the esterase patterns in t. castaneum when parasitized by gre ... | 2015 | 26072335 |
| the enigma of eugregarine epicytic folds: where gliding motility originates? | in the past decades, many studies focused on the cell motility of apicomplexan invasive stages as they represent a potential target for chemotherapeutic intervention. gregarines (conoidasida, gregarinasina) are a heterogeneous group that parasitize invertebrates and urochordates, and are thought to be an early branching lineage of apicomplexa. as characteristic of apicomplexan zoites, gregarines are covered by a complicated pellicle, consisting of the plasma membrane and the closely apposed inne ... | 2013 | 24053424 |
| sophisticated adaptations of gregarina cuneata (apicomplexa) feeding stages for epicellular parasitism. | gregarines represent a very diverse group of early emerging apicomplexans, parasitising numerous invertebrates and urochordates, and are considered of little practical significance. recently, they have gained more attention since some analyses showed that cryptosporidia are more closely related to the gregarines than to coccidia. | 2012 | 22900033 |