Results 31 to 40 of about 1,424 (171)

Leiomyoma Causing Disease in a Wild Adriatic Sturgeon (Acipenser naccarii, Bonaparte, 1836). [PDF]

J Fish Dis
ABSTRACT The Adriatic sturgeon, Acipenser naccarii, is an endemic species to the Adriatic Sea basin classified as critically endangered according to the IUCN Red List. Limited information is available regarding the health status and diseases affecting this species, particularly in the wild.
Marsella A, Pretto T, Samassa C, Tedesco P, Pascoli F, Congiu L, Gustinelli A, Borghesan F, Toffan A.   +8 more
europepmc   +2 more sources

Acanthocephala, Annelida, Arthropoda, Myxozoa, Nematoda and Platyhelminthes parasites of fishes from the Guandu river, Rio de Janeiro, Brazil [PDF]

Check List, 2010
Using information from all published reports and data collected during several parasitological surveys between April 2003 and September 2009, a checklist of the parasites of fishes from Guandu River, southeastern of Brazil was generated.
Rodney Azevedo, Vanessa Abdallah, José Luque   +2 more
doaj   +5 more sources

CONDITION FACTOR AND ECOLOGY OF ENDOHELMINTHS IN Metynnis lippincottianus FROM THE CURIAÚ RIVER, IN EASTERN AMAZON (BRAZIL)

Boletim do Instituto de Pesca, 2020
Fish are among the vertebrate groups most susceptible to parasitic infections due to environmental characteristics that can favor the development of parasites; also, position of the host in food web has been associated with the parasitism.
Abthyllane CARVALHO, Roger Leomar FERREIRA, Priscila ARAÚJO, Marcos TAVARES-DIAS, Edilson MATOS, Marcela Nunes VIDEIRA   +5 more
doaj   +1 more source

Does bigger mean sicker? A systematic review and meta‐analysis of the intraspecific relationship between host body size and parasite infection across vertebrate taxa

Oikos, Volume 2026, Issue 10, October 2026.
Elucidating the determinants of parasite infection levels of individuals within a population is a basic but important step for understanding the roles of parasites in natural systems. Among intraspecific studies on vertebrate hosts and metazoan parasites, host body size (length/mass) is probably the most frequently reported factor determining parasite ...
Ryota Hasegawa, Daniela de Angeli Dutra, Bronwen Presswell, Jerusha Bennett, Cameron McDougall, Katherine E. Buschang, Xuhong Chai, Robert Poulin   +7 more
wiley   +1 more source

Scanning morphology, prevalence and histopathology of some acanthocephalans infecting some River Nile fish

Bulgarian Journal of Veterinary Medicine, 2021
Acanthocephalan morphology and their adverse pathological impact on fish are of great concern. Two species of acanthocephalans were recorded from 800 samples of live freshwater fish collected randomly during 2017–2018 from Lake Nasser, Aswan, Egypt.
E. K. A. Bazh, A. H. Hamouda
doaj   +1 more source

New Records of Helminth Parasites in Amphibians from the South American Chaco

Zoodiversity
This study aims to identify the helminth fauna of twelve anurans species from Argentina's Dry and Humid Chaco ecoregions. We collected one hundred and fifty-two specimens belonging to the species Dendropsophus nanus (n = 17), Scinax nasicus (n = 15 ...
M. A. González, M. A. Villegas Ojeda, J. N. Caraballo, L. G. Ailán Choke, M. I. Hamann, M. I. Duré, V. I. Gómez, C. E. González   +7 more
doaj   +1 more source

Morphological Characterization and Complete Mitochondrial Genome of a New Epizoic Hexamerous Brittle Star Gymnolophus sexradia sp. Nov

Ecology and Evolution, Volume 16, Issue 8, August 2026.
This study describes a new hexamerous epizoic brittle star species, Gymnolophus sexradia sp. nov., from the South China Sea, which lives on crinoid hosts and exhibits a six‐armed body plan possibly indicating fissiparity. Its vertebral and arm plate structures enhance horizontal flexibility for grasping the host, and phylogenetic analysis based on ...
Ziye Zhang, Weilin Xiao, Chao Zhang, Chunyan Li, Huixian Zhang, Zelin Chen   +5 more
wiley   +1 more source

Helminth parasites of the levantine frog (Pelophylax bedriagae Camerano, 1882) from the western part of Turkey

Helminthologia, 2015
Fifty-four Pelophylax bedriagae (Levantine Frog) from Turkey (İzmir and Manisa Provinces) were examined for helminth parasites. The frogs were collected between 2012 and 2014 years. Eight species of helminth parasites were recorded: 3 species of Nematoda
Demır S., Yakar O., Yildirimhan H. S., Bırlık S.   +3 more
doaj   +1 more source

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

Environmental 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, Jesús Zarcero, Bruno Fusaro, Eugenia Moreira, Manuel Novillo, Charlotte Havermans, Elisabet Alacid   +6 more
wiley   +1 more source

Progress and Challenges in Phylogenomics and Genomics of Lophotrochozoa/Spiralia

Zoologica Scripta, Volume 55, Issue 4, Page 521-544, July 2026.
ABSTRACT Lophotrochozoa is one of the three major bilaterian groups comprising more than half of the bilaterian phyla. Lophotrochozoa includes among others Mollusca, Annelida, Platyhelminthes and Rotifera. Despite representing such a large proportion of animal diversity, they are historically understudied and genomic resources have been scarce. However,
Torsten H. Struck
wiley   +1 more source