Recruitment and effects of Discocotyle sagittata (Monogenea) infection on farmed trout

@article{RubioGodoy2008RecruitmentAE,
  title={Recruitment and effects of Discocotyle sagittata (Monogenea) infection on farmed trout},
  author={M. Rubio-Godoy and R. Tinsley},
  journal={Aquaculture},
  year={2008},
  volume={274},
  pages={15-23}
}
Farmed rainbow trout Oncorhynchus mykiss and brown trout Salmo trutta were monitored over 3 years for infection with the blood-feeding gill fluke Discocotyle sagittata. Parasite transmission is seasonal: new infections take place during summer/autumn, and transmission is generally negligible during winter/spring. There are 2 sources of infection for naive fish-of-the-year: limited invasion when fish are in the raceways by riverborne larvae originating external to the farm; and internally… Expand

Figures and Tables from this paper

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
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 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
Population dynamics of Cichlidogyrus spp. and Scutogyrus sp. (Monogenea) infecting farmed tilapia in Veracruz, México
TLDR
A group of juvenile fish from the same farm studied separately which harbored lower parasite burdens than those documented in this survey, showed a significant negative correlation between parasite abundance and hematocrit values, suggesting that infection may be detrimental to hosts. Expand
Trophic niche similarity among sea trout Salmo trutta in central Norway investigated using different time-integrated trophic tracers
From 2011 to 2013, anadromous brown trout Salmo trutta (213−730 mm, total body length, LT) were collected during or shortly after their marine feeding migration at 7 different localities in centralExpand
Heterogeneity in helminth infections: factors influencing aggregation in a simple host–parasite system
TLDR
Results suggest that host factors alone, operating post-infection, are sufficient to generate strongly overdispersed parasite distributions, rather than heterogeneity in exposure and initial invasion. Expand
Host impact of monogenean Lepidotrema bidyana infection and intensity estimates for onsite monitoring.
We developed a rapid effective method for accurate estimation of intensity for the monogenean Lepidotrema bidyana, a gill parasite of silver perch Bidyanus bidyanus. This parasite requires monitoringExpand
PREVALENCE STUDIES OF PARASITE POMPHORHYNCHUS KASHMIRENSIS IN LOCAL FISH SPECIES SCHIZOTHORAX
TLDR
The results show the dire need of the application of some suitable measures against these parasites so that the authors' fish fauna are spared from them. Expand
PARASITIC DISEASES OF TROUT AND THEIR CONTROLS IN SUSTAINABLE DEVELOPMENT OF AQUACULTURE: NEMATHELMINTHES
TLDR
The present work aim to the parasitic diseases of freshwater trout caused by phylum Plathyhelmintes, how they are transmitted, which effects they have on trouts, how these could be diagnosed, and how they could be controlled and treated. Expand
Gastrodermis ultrastructure of the different life stages of the polyopisthocotylean monogenean gill parasite Discocotyle sagittata
The polyopisthocotylean Discocotyle sagittata is a blood-feeding monogenean that infects the gill lamellae of rainbow trout, Oncorhynchus mykiss, and brown trout, Salmo trutta. The ultrastructure ofExpand
...
1
2
...

References

SHOWING 1-10 OF 31 REFERENCES
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
Comparative Susceptibility of Brown Trout and Rainbow Trout to Discocotyle sagittata (Monogenea)
TLDR
Brown trout harbored significantly lower burdens than rainbow trout one month postinfection with 100 oncomiracidia/host, indicating that the consistently lower prevalence and intensity of D. sagittata recorded in naturally infected farmed fishes reflects differences in susceptibility to the parasite. Expand
Seasonality of two gill monogeneans from two freshwater fish from an oligotrophic lake in northeast Finland.
TLDR
The seasonal occurrence of Dactylogyrus amphibothrium and Discocotyle sagittata from the gills of ruffe and whitefish was studied in Lake Yli-Kitka, a large oligotrophic lake in Northeast Finland. Expand
Trickle and single infection with Discocotyle sagittata (Monogenea: Polyopisthocotylea): effect of exposure mode on parasite abundance and development.
Experimental infection of rainbow trout Oncorhynchus mykiss (Walbaum) with the monogenean Discocotyle sagittata (Leuckart, 1842) allowed comparison between trickle and single exposure, two infectionExpand
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
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
Infection dynamics of Neoheterobothrium hirame (Monogenea) on juvenile olive flounder, Paralichthys olivaceus (Temminck & Schlegel), in coastal waters of Japan.
TLDR
There was a negative correlation between parasite intensity and host condition factor at Obama Bay, suggesting a causal link between the N. hirame epidemic and the reduction of local flounder populations. 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
Effects of the gill monogenean Zeuxapta seriolae (Meserve, 1938) and treatment with hydrogen peroxide on pathophysiology of kingfish, Seriola lalandi Valenciennes, 1833.
TLDR
Treatment with hydrogen peroxide appeared to have acute effects on fish health but the magnitude and extent of the effects was much less than that caused by chronic infection with Z. seriolae. Expand
Infection Dynamics of the Monogenean Neoheterobothrium hirame Among Young Wild Japanese Flounder in the Western Sea of Japan
TLDR
Investigations on the infection dynamics of Neoheterobothrium hirame among wild 0-year-old Japanese flounder Paralichthys olivaceus caught in the western Sea of Japan off Tottori Prefecture from spring to autumn in 1999 and 2000 suggest that parasite-induced host mortality occurred among the 0- year-oldFlounder in this period. Expand
...
1
2
3
4
...