Cytology of Leidyana canadensis (apicomplexa: eugregarinida) in Lambdina fiscellaria fiscellaria larvae (lepidoptera: geometridae).

@article{Lucarotti2000CytologyOL,
  title={Cytology of Leidyana canadensis (apicomplexa: eugregarinida) in Lambdina fiscellaria fiscellaria larvae (lepidoptera: geometridae).},
  author={Christopher J. Lucarotti},
  journal={Journal of invertebrate pathology},
  year={2000},
  volume={75 2},
  pages={
          117-25
        }
}
  • C. Lucarotti
  • Published 2000
  • Biology, Medicine
  • Journal of invertebrate pathology
The eugregarine Leidyana canadensis infects the larval gut of the eastern hemlock looper, Lambdina fiscellaria fiscellaria. Guts of infected larvae were chemically fixed, embedded in epoxy resin, and sectioned for light and electron microscopy to describe the cytology of L. canadensis and its pathology in the larval host. Oocysts of L. canadensis are ingested by larval hemlock looper. Trophozoites emerge from the oocysts, pass through the peritrophic membrane into the ectoperitrophic space, and… Expand
Fine structure of trophozoites of the gregarine Leidyana ephestiae (Apicomplexa: Eugregarinida) parasitic in Ephestia kuehniella larvae (Lepidoptera)
TLDR
The ultrastructure of the eugregarine Leidyana ephestiae, parasitic in the larval gut of the flour moth, Ephestia kuehniella, is described and shows a large ovoid epimerite containing many mitochondria and vesicles. Expand
Morphological analysis of the cellular interactions between the eugregarine Gregarina garnhami (Apicomplexa) and the epithelium of its host, the desert locust Schistocerca gregaria.
TLDR
In individuals already detached from the host epithelium, a central depression remained at the top of their protomerite, in the area formerly bearing the epimerite. Expand
Sophisticated Adaptations of Gregarina cuneata (Apicomplexa) Feeding Stages for Epicellular Parasitism
TLDR
This study points out the spectacular strategy of Gregarina cuneata for attachment to host tissue and nutrient acquisition while parasitising the intestine of yellow mealworm larvae, and reveals the unusual dynamics of cellular interactions between the host epithelium and parasite feeding stages. Expand
Morpho-functional characterization and esterase patterns of the midgut of Tribolium castaneum Herbst, 1797 (Coleoptera: Tenebrionidae) parasitized by Gregarina cuneata (Apicomplexa: Eugregarinidae).
TLDR
The results of this study suggest that gregarines alter the morphology and physiology of the midgut and may result in nutritional depletion and the impairment of other physiological processes, such as reproduction and development of the host. Expand
The life cycle of Gregarina cuneata in the midgut of Tribolium castaneum and the effects of parasitism on the development of insects
TLDR
Morpho-functional analyses indicated that gregarines absorb nutrients from infected cells and can occlude the midgut as they develop, which may interfere with the host's physiology, causing decreased growth, delayed development, and high mortality rates of the parasitized insects. Expand
Structures related to attachment and motility in the marine eugregarine Cephaloidophora cf. communis (Apicomplexa).
Gregarines represent a highly diversified group of ancestral apicomplexans, with various modes of locomotion and host-parasite interactions. The eugregarine parasite of the barnacle Balanus balanus,Expand
An Ultrastructural Comparison of the Attachment Sites Between Gregarina steini and Cryptosporidium muris
TLDR
The formation and structure of the eugregarine attachment site were compared with comparable features found on the feeder organelle of Cryptosporidium muris Tyzzer, 1907, from the stomach of experimentally infected rodents and the similarity of the attachment strategy between both organisms was revealed. Expand
Histology of the Larval Neodiprion abietis (Hymenoptera: Diprionidae) Digestive Tract
TLDR
The alimentary canal of Neodiprion abietis larvae is a straight tube divided into foregut, midgut; the hindgut consists of the pylorus, a muscular ileum connecting to a bulbous rectum, which then opens to the anus. Expand
Eugregarine trophozoite detachment from the host epithelium via epimerite retraction: fiction or fact?
TLDR
A new hypothesis on the mechanism of trophozoite detachment from the host epithelium based on epimerites retraction into the protomerite is proposed, contrary to the commonly accepted hypothesis describing gradual epimerite constriction and subsequent separation facilitated by contractility of the membrane fusion site (osmiophilic ring). Expand
First record of gregarines (Apicomplexa) in seminal vesicle of insect
TLDR
Different developmental stages, including sporozoytes, oocysts and trophozoites were described from morphological descriptions using light and electron transmission microscopy, which suggests that the protozoan parasite was an Ascogregarina sp. Expand
...
1
2
3
...

References

SHOWING 1-10 OF 23 REFERENCES
Leidyana canadensis N. Sp. (Apicomplexa: Eugregarinida) from Larval Eastern Hemlock Looper, Lambdina fiscellaria fiscellaria (Lepidoptera: Geometridae)
ABSTRACT. Leidyana canadensis n. sp. (Apicomplexa: Eugregarinida) is described from larvae of the eastern hemlock looper, Lambdina fiscellaria (Lepidoptera: Geometridae) collected near St. Stephen,Expand
Lankesteria barretti n. sp. (Eugregarinida, Diplocystidae), a parasite of the mosquito Aedes triseriatus (Say) and a review of the genus Lankesteria Mingazzini.
  • J. Vávra
  • Biology, Medicine
  • The Journal of protozoology
  • 1969
TLDR
The cephalins and gamonts of Lankesteria barretti differ from those of L. culicis (of Aedes aegypti) in having a relatively anterior instead of a central nucleus and in lacking a noticeable mucron; its longitudinal folds are not as well-developed as in L. Culicis, and its paraglycogen granules are larger. Expand
Biology of the gregarine Pyxinia frenzeli in the black carpet beetle, Attagenus megatoma
TLDR
Pyxinia frenzeli is a eugregarine of the family Actinocephalidae that occupies considerable area of midgut lumen in the larva of the black carpet beetle and can be eradicated from the larval stage by incorporating 8% sorbic acid into its diet. Expand
LEIDYANA MIGRATOR N. SP. (APICOMPLEXA: EUGREGARINIDA: LEIDYANIDAE) FROM THE MADAGASCAR HISSING COCKROACH, GROMPHADORHINA PORTENTOSA (INSECTA: BLATTODE A)
TLDR
The first species of Leidyana described from a cockroach, and the complete life cycle and development are presented, indicating that trophozoites and gamonts of L. migrator overlap morphometrically with those of the 2 most similar congeners, L. erratica and L. oviformis, but each of the 3 species displays unique characters. Expand
The fine structure of the gregarine Pyxinoides balani parasitic in the barnacle Balanus tintinnabulum.
  • J. F. Reger
  • Biology, Medicine
  • The Journal of protozoology
  • 1967
TLDR
The location of the pentalaminar layer at the surface and the presence of pores and caveolae in its structure suggests some transport and/or segregation function of the eugregarines. Expand
sp. n. (Protozoa: Eugregarinida), a gregarine parasite of salt marsh deerflies (Diptera: Tabanidae)
Abstract Cometoides pechumani sp. n. is described from larvae and adults of Chrysops fuliginosus and from a pupa of C. atlanticus. Stages of the gregarine were found in the fore-, mid-, and hindguts.Expand
A Study of the Structure and Gliding Movement of Gregarina garnhami
TLDR
The structure and gliding movement of Gregarina garnhami Canning, a eugregarine found in the midgut of the desert locust, have been studied by light microscopy and transmission and scanning electron microscopy (EM). Expand
Influence of gut parasites on growth performance in the water strider Gerris buenoi (Hemiptera: Gerridae)
TLDR
A quantitative genetic approach was used to test if resistance against gregarines has a heritable component, and there was no evidence for any genetic variation, suggesting that variability in gregarine loads is the result of environmental heterogeneity. Expand
Durée de formation des cristaux protéiques intranucléaires de l'intestin moyen de Tenebrio molitor
TLDR
The turnover time of the epithelium is evaluated by measuring the time required for migration of labelled cells from the crypts to the lining of the midgut, finding that in insects killed a few hours after a tritiated thymidine injection, these latter have been formed in less than 4 days. Expand
Natural and Applied Control of Insects by Protozoa
TLDR
The body of literature dealing with natural and applied control by protozoa now is so extensive that no single review can provide a fully comprehensive treat­ ment of the subject. Expand
...
1
2
3
...