Results 51 to 60 of about 14,390 (182)

Reproductive Morphometric Plasticity in Gregarina polymorpha Infecting Tenebrio molitor Larvae

open access: yesJournal of Eukaryotic Microbiology, Volume 73, Issue 5, September/October 2026.
ABSTRACT Morphological variability remains one of the principal challenges in the taxonomy and species delimitation of gregarines (Apicomplexa: Gregarinomorphea). In the present study, we investigated morphometric variability in gametocysts and syzygies of Gregarina polymorpha infecting Tenebrio molitor larvae through quantitative morphometric and ...
Alejandro Javier Correa‐Espinosa   +1 more
wiley   +1 more source

Studies on coccidian oocysts (Apicomplexa: Eucoccidiorida) [PDF]

open access: yesRevista Brasileira de Parasitologia Veterinária, 2014
The oocysts of the coccidia are robust structures, frequently isolated from the feces or urine of their hosts, which provide resistance to mechanical damage and allow the parasites to survive and remain infective for prolonged periods. The diagnosis of coccidiosis, species description and systematics, are all dependent upon characterization of the ...
Berto, Bruno Pereira   +2 more
openaire   +5 more sources

Molecular Genetics of Hepatozoon canis With a Note on Effect of Parasite on the Complete Blood Count Profile of Canine Hosts

open access: yesEcology and Evolution, Volume 16, Issue 8, August 2026.
A total of 654 blood samples were collected from healthy dogs in Punjab and Khyber Pakhtunkhwa provinces in Pakistan and screened for the presence of Hepatozoon canis. Genetic diversity of the detected H. canis DNA, infection‐associated risk factors, and changes in the complete blood count of the host due to parasitic activity were also evaluated.
Madiha Rasool   +14 more
wiley   +1 more source

Post‐LECA Origin and Diversification of an Axonemal Outer Arm Dynein Motor

open access: yesCytoskeleton, Volume 83, Issue 7, Page 457-465, July 2026.
ABSTRACT Dyneins were present in the last eukaryotic common ancestor (LECA) and play key roles in eukaryotic biology. Axonemal dyneins form the inner and outer arms that power ciliary beating, and it has long been recognized that outer arms in some organisms contain two different heavy chain motors, whereas those from other species contain a third unit
Stephen M. King
wiley   +1 more source

Discovery of an Atypical Arp2/3 Complex in Malaria Parasites Sheds New Light on Nuclear Actin

open access: yesCytoskeleton, Volume 83, Issue 7, Page 479-483, July 2026.
ABSTRACT The Arp2/3 complex is a key actin nucleator essential for cytoskeletal dynamics in eukaryotes. Previously believed absent in apicomplexan parasites, we recently identified an atypical Arp2/3 complex in malaria parasites consisting of five divergent subunits and a putative kinetochore‐associated factor.
Franziska Hentzschel   +2 more
wiley   +1 more source

An Overview of Peripheral Blood Mononuclear Cells as a Model for Immunological Research of Toxoplasma gondii and Other Apicomplexan Parasites

open access: yesFrontiers in Cellular and Infection Microbiology, 2019
In biology, models are experimental systems meant to recreate aspects of diseases or human tissue with the goal of generating inferences and approximations that can contribute to the resolution of specific biological problems.
John Alejandro Acosta Davila   +1 more
doaj   +1 more source

Changing Pacific Salmon Nursery Lake Ecosystem Dynamics Over Centuries to Millennia: Insights From Sedimentary DNA Metabarcoding

open access: yesEnvironmental DNA, Volume 8, Issue 4, July‐August 2026.
Sedimentary DNA metabarcoding tracks long‐term eukaryotic community change in Pacific salmon nursery lakes, revealing potential land‐use and climate influences on algal communities and resilience indicators. ABSTRACT Pacific salmon are keystone species in North Pacific freshwater, riparian, and marine ecosystems, but many populations have declined or ...
Yuanyu Cheng   +4 more
wiley   +1 more source

Metabarcoding of Broad‐Diet Nototheniid Fish Stomachs Reveals Newly Detected Antarctic Parasite Signals and Potential Host Associations

open access: yesEnvironmental DNA, Volume 8, Issue 4, July‐August 2026.
Using 18S rDNA metabarcoding of stomach contents from two Antarctic nototheniid fishes, we detected 242 parasite OTUs. Protists dominated diversity, metazoans dominated abundance, and depth structured assemblages. Novel parasite–host associations and previously unreported pathogenic protists highlight fish metabarcoding as a tool for biodiversity and ...
Micaela B. Ruiz   +6 more
wiley   +1 more source

Severe Tick Infestation and Haemogregarina spp. Infection in a Captive African Rock Python (Python sebae): A Clinical and Parasitological Case from Nigeria

open access: yesVeterinary Medicine and Science, Volume 12, Issue 4, July 2026.
Heavy Amblyomma latum infestation transmitted haemoparasites to a captive African rock python, causing anorexia, facial swelling and dysecdysis. Manual tick removal, povidone‐iodine cleansing and a single oral dose of ivermectin cleared both ecto‐ and haemoparasites.
Foluke Adedayo Akande   +8 more
wiley   +1 more source

In Vitro Antiparasitic Effects of Silver Nanoparticles on Sarcocystis Bradyzoites

open access: yesVeterinary Medicine and Science, Volume 12, Issue 4, July 2026.
In vitro, silver nanoparticles (AgNPs) exhibit dose and time‐dependent antiparasitic activity against Sarcocystis bradyzoites from sheep, achieving up to 59.53% mortality at 800 µg/mL after 120 min. These results suggest AgNPs may be a potential alternative to traditional drugs, meriting further in vivo investigation for veterinary use.
Nasrin Karimi   +3 more
wiley   +1 more source

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