Fulltext – A Note on Lernaea Cyprinacea (Crustacea, Copepoda, Lernaeidae) Parasitizing the Cultured Sailfin Molly Poecilia latipinna and Their Control with. Approximately species of lernaeids (Lernaea and Lernaea-like parasites) have been described. Lernaea cyprinacea, one of the more common species. Life history study on Lernaea cyprinacea showed that the first copepodid stage appeared 3–4 days after hatching and there are six copepodid stages similar to.

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Nevertheless, in cold temperate climates, the parasites probably overwinter as metamorphosed females. American Fisheries Society, Washington.

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However, no chemotherapeutants, often costly and dangerous, were applied against L. The parasites were found attached predominantly at the base of the dorsal fin and a few on the caudal, anal and pelvic fins, but were absent on other body areas of P.

Diseases of Fishes I, Snieszko, S. Several of the larval stages die due to not reaching a suitable host. Even though the present study was conducted with subadults and not fingerlings, current observations on susceptibility of L.

The deleterious effects depend on the host species and the degree of infection which is depending on the characteristic of host-parasite system and often correlated with the size and age of the fish.


Lernaea – Wikipedia

Title Adult female in situ. Baur, ; Yamaguti, Its first leg is located just behind the arms and the second through fourth legs are widely spaced along the body. The antenna of the male is shorter than in the female, it has a larger claw as well.

Anthropogenic environmental change and the emergence of lernafa diseases in wildlife. Natalie Steckler, graduate student; and Roy P.

Lernaea cyprinacea

In Fish Diseases and Disorders, vol. Lernaeidae in cyprinids imported to Egypt. Since the host specificity is so low in this parasite, there is a large range of host species. From the second month after initial stocking, the fish started to spawn when the breeders were aged 4 months. This probably is because most of the information regarding cyprinaca transmission of infectious and parasitic agents from cultured to wild fish is circumstantial and often equivocal Iwama Parasitic Copepoda and Branchiura of Fishes.

They are distinctly segmented. If a fish is unable to adapt to new stresses, its health is compromised through reduced growth, increased disease susceptibility, reduced swimming performance and other physiological effects Stephen and Iwama However, the resistance shown by C.

The lernaeid life cycle is similar whether the host is a fish or amphibian, but for simplicity this paper will focus on infections in fish. This paper is the first report on the use of doramectin for treatment of Lernaea infection in P.

Materials and methods Susceptibility of P. The Use of Chemicals in Aquaculture in the Philippines. Lernaea is unusual, however, as most common copepod species are free-living and do not cause disease. Snieszko SF edA symposium on diseases of fish and shellfish.


With this process they reform thier apendages and acquire the ability to swim again and leave their intermediate host. This indicates that even though the infected fish from the pond appeared to have got rid of Lernaea infection following deltamethrin treatment, the free or resting or resistant living stages of the parasite continued to survive in the culture environment. As described previouslyL. The head of the copepod is a small bump that projects between the horns.

WoRMS – World Register of Marine Species – Lernaea cyprinacea Linnaeus,

Quarantine and screening of incoming fish are highly recommended to avoid introduction of the parasite. Each cyprinaccea was stocked with 40 females and 20 males 3. Lernaea in Tilapia breeding stock and silver carp fry are treated with 0.

Baur, ; Hoffman, Calman, ; Gurney, ; Yamaguti, This is a six-legged elliptical larva.

Lernaeids are mesoparasitic copepods infecting most freshwater fish, anchoring to their host by means of enlarged powerful maxillae and resulting in deleterious effects Kabata, ; Trilles and Hipeau-Jacquotte, ; Raibaut, Heavy infection was observed during regular sampling for experiments on breeding and this resulted in the death of some infected individuals.