Trickle and single infection with Discocotyle sagittata (Monogenea: Polyopisthocotylea): effect of exposure mode on parasite abundance and development.

@article{RubioGodoy2002TrickleAS,
  title={Trickle and single infection with Discocotyle sagittata (Monogenea: Polyopisthocotylea): effect of exposure mode on parasite abundance and development.},
  author={M. Rubio-Godoy and R. Tinsley},
  journal={Folia parasitologica},
  year={2002},
  volume={49 4},
  pages={
          269-78
        }
}
Experimental infection of rainbow trout Oncorhynchus mykiss (Walbaum) with the monogenean Discocotyle sagittata (Leuckart, 1842) allowed comparison between trickle and single exposure, two infection modes demonstrated to occur in the wild. Both types of infection resulted in mean larval attachment success around 50%, which was significantly dependent on dose of infective larvae used (P < 0.0001), but was not affected by mode of infection (P = 0.244). Worms recovered from fish exposed to the… Expand
Immunity in rainbow trout, Oncorhynchus mykiss, against the monogenean Discocotyle sagittata following primary infection
TLDR
Super-infection experiments suggested that no concomitant immunity develops inbow trout, and no correlation was found between initial burdens and the outcome of secondary challenges in the same individual. Expand
Experimental transmission of Sparicotyle chrysophrii (Monogenea: Polyopisthocotylea) to gilthead seabream (Sparus aurata) and histopathology of the infection.
TLDR
The polyopisthocotylean Sparicotyle chrysophrii was experimentally transmitted to gilthead seabream by exposure to eggs and by cohabitation with naturally parasitized fish, and the histopathological effects of the monogenean on the gills of naturally infected fish consisted of lamellar shortening, clubbing and synechiae. Expand
Transmission dynamics of Discocotyle sagittata (Monogenea) in farmed rainbow trout interpreted from parasite population age structure
TLDR
4 contrasting patterns document the effects of temperature as a major factor shaping the population age structure of D. sagittata, indicating that despite recent, intense transmission, some hosts carrying relatively low burdens of adult parasites experienced little or no successful recruitment during preceding periods favourable for transmission. Expand
Recruitment and effects of Discocotyle sagittata (Monogenea) infection on farmed trout
TLDR
Evidence is presented of the detrimental effects of D. sagittata on the host: high burdens are associated with pale gills, decreased body condition and host mortality, as Parasite burdens become overdispersed during the warmer part of the year, as prevalence and mean abundance increase. Expand
Microhabitat selection of Discocotyle sagittata (Monogenea: Polyopisthocotylea) in farmed rainbow trout.
TLDR
Evidence of equivalent site selection taking place in fishes maintained under conditions promoting continuous reinfection in aquaculture is provided, since a significant inverse association was found between the intensity of mature parasites and their proportion on anteriormost gill arch I. Expand
Experimental infections, using a fluorescent marker, of two elasmobranch species by unciliated larvae of Branchotenthes octohamatus (Monogenea: Hexabothriidae): invasion route, host specificity and post-larval development
TLDR
Branchotenthes octohamatus larvae bear only 4 pairs of hooklets on the haptor whereas all other hexabothriid larvae described so far have 5 hooklet pairs, suggesting that the mode of infection may deliver larvae directly to the gills via the host's inhalant respiratory current. Expand
Post-larval development of the microcotylid monogenean Sparicotyle chrysophrii (Van Beneden and Hesse, 1863): comparison with species of Microcotylidae and Heteraxinidae.
TLDR
The chronology of post-larval development in S. chrysophrii, a polyopisthocotylean monogenean parasite of the gilthead seabream, was experimentally studied and the relationship between number of clamps and total body length during development can be fitted to an exponential curve for all species compared. Expand
Immunization of rainbow trout Oncorhynchus mykiss against Discocotyle sagiffata (Monogenea).
TLDR
Overall, a significant negative correlation was found between antibody titres and worm burdens, suggesting immunoglobulins are implicated in mediating partial immunity and cannot be excluded that antibodies could be involved in mediates the observed partial immunity. Expand
Effect of dose and frequency of exposure to infectious stages on trematode infection intensity and success in mussels.
TLDR
It is shown that mussels faced higher parasite infection intensity at higher doses of cercarial exposure and that they acquired more infections when repeatedly exposed to smaller doses compared to a single high dose, suggesting that infection intensity in mussels is largely driven by factors mediating the abundance of infective stages. Expand
Co-occurrence and niche overlap among gill parasites of the white mullet (Mugil curema Valenciennes, 1836) (Osteichthyes: Mugilidae) from the western Atlantic, Brazil.
TLDR
The gill parasites were more abundant/prevalent on specific arches of the hosts, shared such preferences and co-occurred on the gill arches, and infracommunities were characterized as interactive in the gills of this host species. Expand
...
1
2
3
...

References

SHOWING 1-10 OF 41 REFERENCES
Population dynamics of Trichostrongylus colubriformis in sheep: the effect of infection rate on the establishment of infective larvae and parasite fecundity.
TLDR
Parasite egg production, expressed as eggs per gram of faeces, was proportional to infection rate and is explained by higher worm burdens occurring at high infection rates, however, estimates of fecundity in eggs per female per day showed the opposite relationship with rate of infection. Expand
The population dynamics of the monogenean gill parasite Discocotyle sagittata Leuckart on Windermere trout, Salmo trutta, L.
TLDR
The British host, the brown trout, has been intensively studied for many years and it was thought that this would be of advantage in attempting to relate any seasonal fluctuations in the parasite population to the biology of the host. Expand
Development and infectivity of eggs and larvae derived from pigs trickle-infected with Oesophagostomum dentatum at different dose levels
TLDR
Worm establishments were significantly higher in the group of pigs receiving larvae derived early in the experiment from the low-dose group compared with the two groups receiving larvae from high-dose groups, thus indicating an adverse effect of high doses of trickle infection on the later infectivity of L3 larvae derived from excreted eggs. Expand
Pathophysiological aspects of Mecistocirrus digitatus (Nematoda: Trichostrongylidae) infection in calves.
TLDR
An anaemia and a reduction in weight gain caused by the haematophagous activity of adult stages seem to be the most important pathogenic effects of M. digitatus infection in calves. Expand
Microenvironment of Gyrodactylus derjavini on rainbow trout Oncorhynchus mykiss: association between mucous cell density in skin and site selection
TLDR
Results strongly indicate that mucous cell contents play a decisive role in gyrodactylid site selection and reactive substances present in increasing amounts will counteract the performance of parasites in mucous-cell-rich microhabitats. Expand
Mating rendezvous in monogenean gill parasites of the humbug Dascyllus aruanus (Pisces: Pomacentridae).
  • C. Lo
  • Biology, Medicine
  • The Journal of parasitology
  • 1999
TLDR
The gills of the humbug were infected by a monogenean genus Haliotrema at a high prevalence but with a low mean intensity, and mating rendezvous appears to be a more important factor than site location for these gill monogeneans. Expand
Population dynamics of the parasitic stages of Oesophagostomum dentatum in pigs in single and trickle infections.
  • E. Barnes
  • Medicine, Biology
  • International journal for parasitology
  • 1997
TLDR
The results suggest that the demography of O. dentatum in pigs differs between single and trickle infections, and total worm burden had less influence on observed female worm length and egg production than in the single infections. Expand
Monogenea (platyhelminthes) as hazards for fish in confinement
Abstract Occurrences of large-scale, parasite-related fish diseases have increased as the number and size of hatcheries, mass culture facilities, and public and private desplay aquaria have grown.Expand
Environmental effects on transmission of Discocotyle sagittata (Monogenea): egg production and development.
TLDR
Egg production by the freshwater gill monogenean Discocotyle sagittata infecting rainbow trout was monitored at 5, 13 and 18 degrees C and viability declined at the highest and lowest temperatures; the implications for seasonal parasite transmission are discussed. Expand
Microhabitats and Mode of Attachment of Neoheterobothrium hirame, a Monogenean Parasite of Japanese Flounder
TLDR
A survey of Neoheterobothrium hirame infection of Japanese flounder Paralichthys olivaceus in several places in Japan was conducted to examine the relationship between the development of the parasite and its microhabitats. Expand
...
1
2
3
4
5
...