Monogenean Parasites of Fish (original) (raw)

Monogenean Parasites of Fish 1

2012

2. Peggy Reed, director, All Florida Veterinary Laboratory, Alachua, FL; Ruth Francis-Floyd, professor, Department of Fisheries and Aquatic Sciences and Department of Large Animal Clinical Sciences (College of Veterinary Medicine); RuthEllen Klinger, biological scientist, Department of Large Animal Clinical Sciences (College of Veterinary Medicine); and Denise Petty, clinical assistant professor and extension veterinarian, Florida Cooperative Extension Service, Institute of Food and Agricultural Sciences, University of Florida, Gainesville, FL 32611.

South American Monogenoidea parasites of fishes, amphibians and reptiles

This catalog lists species and figures of Monogenoidea parasites of fishes, amphibians and reptiles from South America. Six hundred and fifty one monogenoidean species have been recorded: 437 species from Brazil, 115 from Peru, 75 from Argentina, 44 from Venezuela, 40 from Chile, 23 from Falkland-Patagonian region, 17 from Colombia and 17 from Uruguay, 12 from Bolivia, 11 from Galapagos, 07 from Ecuador, 06 from French-Guyana, 04 from Guyana and from Paraguay each and 02 from Surinam. This survey is based on bibliographic sources and includes figures, hosts, geographical distribution and references

Tracking transparent monogenean parasites on fish from infection to maturity

International Journal for Parasitology: Parasites and Wildlife, 2015

The infection dynamics and distribution of the ectoparasitic fish monogenean Neobenedenia sp. (Monogenea: Capsalidae) throughout its development was examined on barramundi, Lates calcarifer (Bloch) (Latidae), by labelling transparent, ciliated larvae (oncomiracidia) with a fluorescent dye. Replicate fish were each exposed to approximately 50 fluorescent oncomiracidia and then examined for parasites using an epifluorescence stereomicroscope at 10 time intervals post-exposure (15, 30, 60, 120 min, 24, 48 h, four, eight, 12, and 16 days). Fluorescent labelling revealed that parasites attached underneath and on the surface of the scales of host fish. Parasite infection success was 20% within 15 min, and peaked at 93% two days post-exposure, before gradually declining between four and sixteen days. Differences in parasite distribution on L. calcarifer over time provided strong evidence that Neobenedenia sp. larvae settled opportunistically and then migrated to specific microhabitats. Parasites initially attached (<24 h) in greater mean numbers on the body surface (13 ± 1.5) compared to the fins (4 ± 0.42) and head region (2 ± 0.41). Once larvae recruitment had ceased (48 h), there were significantly higher mean post-larvae counts on the head (5 ± 3.4) and fins (12 ± 3) compared to previous time intervals. Neobenedenia sp. aggregated on the eyes, fins, and dorsal and ventral extremities on the main body. As parasites neared sexual maturity, there was a marked aggregation on the fins (22 ± 2.35) compared to the head (4 ± 0.97) and body (9 ± 1.33), indicating that Neobenedenia sp. may form mating aggregations.

Fish host-monogenean parasite interactions, with special reference to Polyopisthocotylea

Advances in the Immunobiology of …, 2007

Teleost fishes possess immune systems capable of mounting humoral and cellular responses against pathogens, both specific and non-specific. Monogenea (Platyhelminthes) are common ectoparasites of fish, and can have significant pathogenic effects on hosts, particularly confined animals. There are two types of monogeneans, Monopisthocotylea and Polyopisthocotylea, which differ in their biology and effects on the host. Several reviews have summarised the information available on the interaction between fish hosts and monopisthocotylean monogenean parasites; this review focuses on case studies involving polyopisthocotyleans