Eimeria umis n. sp., a Coccidian Parasite from the Lizard Uma notata Baird

1969 ◽  
Vol 88 (2) ◽  
pp. 257 ◽  
Author(s):  
Eugene C. Bovee
Keyword(s):  
Coccidian Parasite

A new coccidian parasite (Apicomplexa: Eimeriidae: Eimeria) from the southern black racer, Coluber constrictor priapus (Reptilia: Ophidia: Colubridae) from Arkansas, USA

2018 ◽  
Vol 63 (3) ◽  
pp. 558-562
Author(s):  
Chris T. McAllister ◽  
John A. Hnida ◽  
Henry W. Robison
Keyword(s):  
Polar Granule ◽  
Stieda Body ◽  
Coccidian Parasite ◽  
Sporocyst Residuum ◽  
Coluber Constrictor ◽  
Coccidian Parasites ◽  
Oocyst Residuum

AbstractBetween April 2012 and October 2017, 18 southern black racers,Coluber constrictor priapus, were collected from nine counties of Arkansas (n= 13) and McCurtain County, Oklahoma (n= 5) and their faeces examined for coccidian parasites. One of 18 (6%)C. c. priapusharboured an eimerian that we describe here as new. Oocysts ofEimeria dunnisp. nov. were subspheroidal with a lightly pitted bi-layered wall measuring L × W 24.0 × 21.1 and L/W ratio of 1.2. A micropyle was absent but an oocyst residuum and polar granule were present. Sporocysts were ovoidal and measured 11.9 × 8.1 with L/W of 1.5. A Stieda body was present but substieda and parastieda bodies were absent. The sporocyst residuum was composed of medium-sized granules aligned along perimeter of sporocyst or in a dispersed mass. This represents the first valid eimerian reported from the southern black racer.

Cyclospora cayetanensis infection in humans: biological characteristics, clinical features, epidemiology, detection method and treatment

Parasitology ◽  
2019 ◽  
Vol 147 (2) ◽  
pp. 160-170 ◽  
Author(s):  
Junqiang Li ◽  
Rongjun Wang ◽  
Yuancai Chen ◽  
Lihua Xiao ◽  
Longxian Zhang
Keyword(s):  
Clinical Features ◽  
Detection Method ◽  
Developed Countries ◽  
Biological Characteristics ◽  
Detection Methods ◽  
Molecular Testing ◽  
Coccidian Parasite ◽  
Low Socioeconomic ◽  
Cyclospora Cayetanensis ◽  
Susceptible Populations

AbstractCyclospora cayetanensis, a coccidian parasite that causes protracted and relapsing gastroenteritis, has a short recorded history. At least 54 countries have documented C. cayetanensis infections and 13 of them have recorded cyclosporiasis outbreaks. Cyclospora cayetanensis infections are commonly reported in developing countries with low-socioeconomic levels or in endemic areas, although large outbreaks have also been documented in developed countries. The overall C. cayetanensis prevalence in humans worldwide is 3.55%. Among susceptible populations, the highest prevalence has been documented in immunocompetent individuals with diarrhea. Infections are markedly seasonal, occurring in the rainy season or summer. Cyclospora cayetanensis or Cyclospora-like organisms have also been detected in food, water, soil and some other animals. Detection methods based on oocyst morphology, staining and molecular testing have been developed. Treatment with trimethoprim–sulfamethoxazole (TMP–SMX) effectively cures C. cayetanensis infection, whereas ciprofloxacin is less effective than TMP–SMX, but is suitable for patients who cannot tolerate co-trimoxazole. Here, we review the biological characteristics, clinical features, epidemiology, detection methods and treatment of C. cayetanensis in humans, and assess some risk factors for infection with this pathogen.

OnAdelina tribolii, a coccidian parasite ofTribolium ferrugineumF

Parasitology ◽  
1937 ◽  
Vol 29 (2) ◽  
pp. 239-246 ◽  
Author(s):  
M. L. Bhatia
Keyword(s):  
Connective Tissue ◽  
Coccidian Parasite ◽  
Fat Bodies

The coccidian dealt with in this paper is a parasite of the blood, fat bodies and connective tissue ofTribolium ferrugineum. W. A. Riley and L. Krogh were the first and perhaps the only ones who noticed stages of this parasite, when studying the histology of the larvae of this beetle. They found the pupae and adults uninfected, but in the course of the present work some of them were heavily infected, though only a small number could be examined.

Biology and epidemiology ofToxoplasma gondiiin man and animals

2005 ◽  
Vol 6 (1) ◽  
pp. 41-61 ◽  
Author(s):  
Dolores E. Hill ◽  
Sreekumar Chirukandoth ◽  
J. P. Dubey
Keyword(s):  
Toxoplasma Gondii ◽  
Intermediate Host ◽  
Host Range ◽  
Marine Mammals ◽  
Parasitic Infections ◽  
Sea Otter ◽  
Coccidian Parasite ◽  
Wild Carnivores ◽  
Southern Sea Otter

AbstractToxoplasma gondiiis a coccidian parasite which utilizes felids as definitive hosts, and which has an unusually wide intermediate host range. The parasite was initially described by Nicolle and Manceaux in 1908 from the rodent,Ctenodactylus gundi. Infection withT. gondiiis one of the most common parasitic infections of man and other warm-blooded animals. It has been found worldwide from Alaska to Australia. Nearly one-third of humanity has been exposed to this parasite; serologic surveys indicate thatT. gondiiinfections are common in wild carnivores, including pigs, bears, felids, fox, raccoons, and skunks. Clinical and subclinical toxoplasmosis has been reported from wild cervids, ungulates, marsupials, monkeys, and marine mammals. Southern sea otter populations have been severely impacted byToxoplasmainfections.

Sex-dependent toxoplasmosis-associated differences in testosterone concentration in humans

Parasitology ◽  
2008 ◽  
Vol 135 (4) ◽  
pp. 427-431 ◽  
Author(s):  
J. FLEGR ◽  
J. LINDOVÁ ◽  
P. KODYM
Keyword(s):  
Toxoplasma Gondii ◽  
Opposite Direction ◽  
Direct Evidence ◽  
Latent Infection ◽  
Indirect Evidence ◽  
Male Students ◽  
Coccidian Parasite ◽  
Testosterone Concentration ◽  
Gender Specificity

SUMMARYSeveral lines of indirect evidence suggest that subjects with latent infection of the coccidian parasiteToxoplasma gondiihave a higher concentration of testosterone than uninfected controls. Here, we searched for direct evidence of latent toxoplasmosis-associated differences in testosterone concentration among a population of 174 female and 91 male students screened forToxoplasmainfection. We have foundToxoplasma-infected men to have a higher concentration of testosterone andToxoplasma-infected women to have a lower concentration of testosterone thanToxoplasma-free controls. The opposite direction of the testosterone shift in men compared to women can explain the observed gender specificity of behavioural shifts inToxoplasma-infected subjects.

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