Results 31 to 40 of about 9,678 (132)

The Zoonotic Helminth Parasite Fasciola hepatica: Virulence-Associated Cathepsin B and Cathepsin L Cysteine Peptidases Secreted by Infective Newly Excysted Juveniles (NEJ)

Animals, 2021
Fasciolosis caused by Fasciola hepatica is a major global disease of livestock and an important neglected helminthiasis of humans. Infection arises when encysted metacercariae are ingested by the mammalian host. Within the intestine, the parasite excysts
Tara Barbour, Krystyna Cwiklinski, Richard Lalor, John Pius Dalton, Carolina De Marco Verissimo   +4 more
doaj   +1 more source

Melanoma and Other Melanistic Lesions in Brown Bullhead Ameiurus nebulosus From Waterbodies in the Northeastern United States and Canada: Identification of Risk Factors

Journal of Fish Diseases, EarlyView.
ABSTRACT Melanistic lesions, including non‐raised black areas due to proliferations of melanocytes and melanomacrophages in the dermis and epidermis, as well as raised black areas consistent with melanoma, are described in brown bullhead (BBH) Ameiurus nebulosus from three water bodies in the northeastern United States and Quebec, Canada.
Vicki S. Blazer, Peter Emerson, Matthew Bodnar, Thomas Jones, David R. Russell, Matthew Pehrson, Cheyenne R. Smith, Danielle Cleveland, Mark J. Henderson, Patricia M. Mazik   +9 more
wiley   +1 more source

Genetic Diversity and Phylogeography of Schistosoma mansoni from Guinea

Diversity
Human schistosomiasis is a neglected tropical disease caused by six Schistosoma species, the most widespread of which is S. mansoni. Despite its high prevalence in Africa, molecular data on the parasite remain scarce in many regions, including the ...
Ekaterina Vodiasova, Daria Prokhorova, Viktoria Uppe, Elizaveta Bogacheva, Ibrahima Keita, Evgenija Dmitrieva   +5 more
doaj   +1 more source

Challenging Host Specificity: Malacosporean Parasite Dynamics—Tetracapsuloides bryosalmonae Beyond Salmonids—An Infection Experiment

Journal of Fish Diseases, EarlyView.
ABSTRACT Proliferative Kidney Disease (PKD) is a severe parasitic disease of salmonids caused by the malacosporean endoparasite Tetracapsuloides bryosalmonae. In the fish intermediate host, the parasite is disseminated via the circulatory system and ultimately reaches the kidney, where it matures before releasing infective spores into the environment ...
Céline Möckli, Nicolas Diserens, Gary Delalay, Gastón Moré, Heike Schmidt‐Posthaus   +4 more
wiley   +1 more source

Parasites of the green-backed firecrown (Sephanoides sephanoides) in Chile

Revista Mexicana de Biodiversidad, 2011
Gastrointestinal and external parasites from 12 Green-backed Firecrown (Sephanoides sephaniodes Molina 1782) were collected between January 2004 to December 2008 from the Biobío Region of south-central Chile and Santiago of central Chile.
Daniel Alfonso González-Acuña, Carolina Silva, Marta Soto, Sergei Mironov, Lucila Moreno, Paulina Gonzalez, Hasan Badrul, Mike Kinsella   +7 more
doaj   +1 more source

Eosinophilia in the Tropics: Should Empirical Anthelmintic Treatment Be Considered Standard Practice? A Prospective Cohort Study

Tropical Medicine &International Health, EarlyView.
ABSTRACT Background Eosinophilia is a common clinical finding with diverse etiologies. Helminthiasis is a major aetiology in tropical regions, but data from haematology consultation services at tertiary centres in endemic settings are limited. Objectives To determine the prevalence of helminthiasis among patients with eosinophilia at a tropical ...
Smith Kungwankiattichai, Patsharaporn T. Sarasombath, Pattaraporn Tunsing, Weerapat Owattanapanich   +3 more
wiley   +1 more source

A fine‐scale phylogenetic assessment of digenean trematodes in central Alberta reveals we have yet to uncover their total diversity

Ecology and Evolution, 2019
Despite over 100 years of digenean trematode parasite species descriptions, from a wide diversity of vertebrate and invertebrate host species, our ability to recognize the diversity of trematode species within a single lake remains an incredible ...
Michelle A. Gordy, Patrick C. Hanington
doaj   +1 more source

Infection with the Neorickettsial Organism Stellantchasmus falcatus Agent in an Arctic Fox (Vulpes lagopus)

Veterinary Clinical Pathology, EarlyView.
ABSTRACT A 1‐year‐old female‐intact arctic fox (Vulpes lagopus) presented for diarrhea, lethargy, severe thrombocytopenia, and hyperbilirubinemia. Blood film evaluation revealed intracytoplasmic coccoid bacteria within moderate numbers of leukocytes consistent with infection by a rickettsial organism.
Jeremy P. Bessett, Alexis G. Davidson, Alyssa M. Scagnelli, Kristen R. Friedrichs   +3 more
wiley   +1 more source

Long‐term trends in parasite diversity and infection levels: approaches and patterns

Biological Reviews, Volume 101, Issue 3, Page 1120-1142, June 2026.
ABSTRACT Parasites exist in every ecosystem, affecting nearly all organisms and playing a complex role in human societies. On the one hand, they contribute substantially to biodiversity and support ecosystem stability by performing essential ecological functions.
Cyril Hammoud, Juan Antonio Balbuena, Isabel Blasco‐Costa, Katie O'Dwyer, Rachel A. Paterson, Tomáš Scholz, Christian Selbach, Bernd Sures, David W. Thieltges   +8 more
wiley   +1 more source

Reproductive system abnormalities in Schistosoma mansoni adult worms isolated from Nectomys squamipes (Muridae: Sigmodontinae): brightfield and confocal laser scanning microscopy analysis

Memorias do Instituto Oswaldo Cruz, 2003
Schistosoma mansoni adult worms with genital anomalies isolated from Nectomys squamipes (Muridae: Sigmodontinae) were studied by confocal laser scanning microscopy under the reflected mode. One male without testicular lobes (testicular agenesia/anorchism)
Neves Renata Heisler, Costa-Silva Michele, Martinez Elaine Machado, Biolchini Carla de Lamare, Lenzi Henrique Leonel, Gomes Delir Corrêa, Machado-Silva José Roberto   +6 more
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