Helminth parasites of Antarctic vertebrates: Part II. Monogenetic trematodes from Antarctic fishes: The superfamily Gyrodactyloidea Johnston and Tiegs, 19221

2013 ◽  
pp. 91-99 ◽  
Author(s):  
William J. Hargis ◽  
William Arthur Dillon
Keyword(s):  
Helminth Parasites ◽  
Antarctic Fishes

Helminths of Antarctic fishes: Life cycle biology, specificity and geographical distribution

2006 ◽  
Vol 51 (1) ◽  
Author(s):  
Anna Rocka
Keyword(s):  
Nematode Species ◽  
Life Cycles ◽  
Helminth Parasites ◽  
Antarctic Fishes ◽  
Bony Fishes ◽  
Macrourus Whitsoni ◽  
Second Intermediate Host ◽  
Cartilaginous Fishes ◽  
Paratenic Hosts ◽  
Almost All

AbstractBony fishes (Teleostei) play an important role in the completion of life cycles of helminth parasites in the Antarctica. These fishes may be definitive, second intermediate or paratenic hosts of the helminths. The most species-rich taxon is Digenea. Virtually all of these digeneans use teleosts as definitive hosts. Only one species, Otodistomum cestoides, occurs as the adult stage in skates (Chondrichthyes), with teleosts as its second intermediate host. Among 14 cestode species maturing in fishes only one, Parabothriocephalus johnstoni, occurs in a bony fish, Macrourus whitsoni, whereas the others are parasites of Chondrichthyes (cartilaginous fishes). Antarctic Chondrichthyes are not infected with nematode and acanthocephalan species. Specificity to the intermediate and/or paratenic hosts of the majority of Antarctic helminths is wide, whereas that for definitive hosts is often narrower, restricted to one order or sometimes even to one or two host species. Almost all of 73 helminth species maturing in Antarctic fishes are endemics. Only 4 digenean and one nematode species are cosmopolitan or bipolar.

ON THE HELMINTH PARASITES OF THE RED SEA FISHES

1999 ◽  
Vol 3 (4) ◽  
pp. 565-595
Author(s):  
Nahed Abdou ◽  
Samir Biltagy ◽  
Ameen Ashour ◽  
Richard Heckmann
Keyword(s):  
Red Sea ◽  
Helminth Parasites

scholarly journals Recognition Pattern of the Fasciola hepatica Excretome/Secretome during the Course of an Experimental Infection in Sheep by 2D Immunoproteomics

Pathogens ◽  
2021 ◽  
Vol 10 (6) ◽  
pp. 725
Author(s):  
David Becerro-Recio ◽  
Javier González-Miguel ◽  
Alberto Ucero ◽  
Javier Sotillo ◽  
Álvaro Martínez-Moreno ◽  
...  
Keyword(s):  
Experimental Infection ◽  
Fasciola Hepatica ◽  
Cathepsin L ◽  
Helminth Parasites ◽  
Glutathione S Transferase ◽  
Serum Samples ◽  
Secretory Products ◽  
Immunogenic Proteins ◽  
Host Parasite ◽  
First Time

Excretory/secretory products released by helminth parasites have been widely studied for their diagnostic utility, immunomodulatory properties, as well as for their use as vaccines. Due to their location at the host/parasite interface, the characterization of parasite secretions is important to unravel the molecular interactions governing the relationships between helminth parasites and their hosts. In this study, the excretory/secretory products from adult worms of the trematode Fasciola hepatica (FhES) were employed in a combination of two-dimensional electrophoresis, immunoblot and mass spectrometry, to analyze the immune response elicited in sheep during the course of an experimental infection. Ten different immunogenic proteins from FhES recognized by serum samples from infected sheep at 4, 8, and/or 12 weeks post-infection were identified. Among these, different isoforms of cathepsin L and B, peroxiredoxin, calmodulin, or glutathione S-transferase were recognized from the beginning to the end of the experimental infection, suggesting their potential role as immunomodulatory antigens. Furthermore, four FhES proteins (C2H2-type domain-containing protein, ferritin, superoxide dismutase, and globin-3) were identified for the first time as non-immunogenic proteins. These results may help to further understand host/parasite relationships in fasciolosis, and to identify potential diagnostic molecules and drug target candidates of F. hepatica.

scholarly journals Population density of helminths in ducks: effects of host’s age, sex, breed and season

1970 ◽  
Vol 6 (1) ◽  
pp. 45-51 ◽  
Author(s):  
T Farjana ◽  
KR Islam ◽  
MMH Mondal
Keyword(s):  
Population Density ◽  
Key Words ◽  
Parasitic Infection ◽  
Winter Season ◽  
Helminth Parasites ◽  
Domestic Ducks ◽  
The Mean

 A study was conducted to investigate the population density of helminth parasites in domestic ducks (Anas boschas domesticus) in relation to host's age, sex, breed and seasons of the year from March 2002 to May 2003. A total of 300 ducks were collected from different villages of Netrokona and Mymensingh districts of Bangladesh and autopsied to collect the parasites and counted to determine the population density of parasites. Off 300 ducks examined, 290 (96.66%) were infected with 17 species of helminth parasites in which 11 species were trematodes, 4 were cestodes and 2 nematodes. Among the parasites, density of cestodes was the highest (33.15±5.26), followed by trematodes (5.98±1.32); and nematodes (2.95±0.68). Mean density of parasites increased with the increase of age (young: 21.23±1.09, adult: 26.18±2.14 and old: 27.87±2.98) while the mean density of most of the helminth parasites was higher in female ducks (31.35±4.72) than in males (27.52±3.32). Indigenous ducks (33.72±3.61) were infected with the highest load of helminths than Khaki Campbell breed (29.61±4.32) of ducks. Mean density of most trematodes (5.42±0.80) were highest in winter season whereas mean density of all cestodes (48.43±4.85) and nematodes (4.13±1.76) were highest in summer.  The present study suggests that age, sex, breed of ducks and seasons of the year influence the parasitic infection to a greater extend. Key words: Population density, helminths, duck, Bangladesh DOI = 10.3329/bjvm.v6i1.1338 Bangl. J. Vet. Med. (2008). 6 (1): 45-51

scholarly journals Helminth Parasites of Conventionally Maintained Laboratory Mice: II- Inbred Strains with an Adaptation of the Anal Swab Technique

1998 ◽  
Vol 93 (1) ◽  
pp. 121-126 ◽  
Author(s):  
Lucineide Gonçalves ◽  
Roberto Magalhães Pinto ◽  
J Júlio Vicente ◽  
Dely Noronha ◽  
Delir Corrêa Gomes
Keyword(s):  
Inbred Strains ◽  
Helminth Parasites ◽  
Laboratory Mice ◽  
Anal Swab
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