Lernaea cyprinacea,

Parasitic copepods of the family Lernaeidae are often found infesting freshwater fishes worldwide. They cause lernaeosis, a disease that can lead to serious pathogenic effects on their fish hosts. The most common lernaeid is the Lernaea cyprinacea, which has been widely introduced through importation of tropical fishes, e.g. cyprinids. In South America, it is one of the most common parasites both in wild and in farmed fish in the central region of Argentina. The silverside Odontesthes bonariensis is the most important fish of the sport fisheries of Argentina and one of the fish most affected by lernaeosis...

Copepod crustaceans are an abundant and ecologically significant group whose basic biology is guided by numerous visually guided behaviors. These behaviors are driven by copepod eyes, including naupliar eyes and Gicklhorn's organs, which vary widely in structure and function among species. Yet little is known about the molecular aspects of copepod vision. In this study we present a general overview of the molecular aspects of copepod vision by identifying phototransduction genes from newly generated and publicly available RNA-sequencing data and assemblies from 12 taxonomically diverse copepod species...

The present study explored the susceptibility of Puntius pulchellus subadults to Lernaea cyprinacea infection subsequent upon their first introduction to an intensive culture system that had a previous history of Lernaea infection and evaluated the efficacy of doramectin against the parasite. All the P. pulchellus introduced to the culture pond got infected demonstrating 100 % susceptibility of this species to Lernaea infection. Pathological changes caused by the parasite as evidenced by the extensive hemorrhage and tissue necrosis of the host at the point of parasite attachment was most severe in P...

The present study was conducted to investigate the effects of parasite infection on haematological parameters of common carp, Cyprinus carpio . To this end, fish with same age were sampled from a warm water fish farm. After fish sampling, fish were transferred to lab for parasite study. Parasite incidence percent and density were calculated for two population carps. After parasite study, to investigate the haematological parameters, the blood sampling was carried out from two group fish i.e. infected (n = 20) and non-infected fish (n = 20)...

Amirkelayeh international wetland with a surface area of 1,230 hectares and fifteen fish species is an important water resource in the southern part of the Caspian Sea. There is few reports on fish parasites of this area. In the present study, a total of 80 Wels catfish, Silurus glanis, were collected from April through July 2011. After recording biometric characteristics, common necropsy and parasitology methods were used. In the present study, a total of 441 individuals of seven parasite species consisting of one nematode: Raphidascaroides sp...

The Lernaeid parasites, Lernaea spp, are crustacean ectoparasites that occur in a variety of fishes worldwide. In the present study, Shizothorax zarudnyi (n = 1,500) were examined during August 2012 to 2013 to determine the prevalence of Lernaeid parasites at one Species fish of Chahnimeh lakes Sistan, Iran. Two species of the genus Lernaea; L. cyprinacea and L. polymorpha, were recorded. The overall prevalence rates of L. cyprinacea and L. polymorpha were 15.47 and 10.20 % respectively. The relationship between body weight and Lernaeid parasites showed that prevalence of L...

This study describes the hematological alterations in Astyanax altiparanae associated with infestation with Lernaea cyprinacea. The study was carried out in a lagoon of the Mogi-Guaçu River, in the municipality of Pirassununga, in the state of São Paulo, Brazil. Of 46 fish examined, 45.6% had their integument infested by L. cyprinacea, with a mean intensity of 4.9 parasites per fish and a mean abundance of 2.2, giving a total of 139 recovered crustaceans. The abundance of L. cyprinacea correlated positively with the length and weight of the hosts, and the intensity of infestation was higher in female hosts...

OBJECTIVE: Lernaeids are crustacean parasites that are globally distributed among freshwater and marine fish. Approximately 110 species of Lernaeids have been divided into 14 genera. The most common species of Lernaeids is Lernaea cyprinacea, which has been transmitted to ornamental fish worldwide. The economic importance of L. cyprinacea is increasing because of the epidemic caused by the parasite in most of the ornamental fish breeding centers in different parts of the world. The parasite affects its host's health, decreases growth rate, and causes abnormal metabolic activity...

The purpose of this study was to use the informations relating to parasite crustaceans species that was published over the course of one century (1913 to 2013), in order to search for infestation and distribution patterns among these ectoparasites in Brazilian freshwater fish species. This search was carried out on 445 samples of 119 host fish of 27 families within the orders Characiformes, Perciformes, Clupeiformes, Mugiliformes, Osteoglossiformes, Symbranchiformes, Tetraodontiformes and Siluriformes from various regions of Brazil...

The full mitochondrial (mt) genome of Sinergasilus polycolpus is 14 000 bp in length, and it contains 13 protein-coding genes, 22 transfer RNA genes, 2 rRNA genes and 1 non-coding region. The genome organization, nucleotide composition and codon usage are different compared to other Copepodas, such as Lernaea cyprinacea. The full mt genome of S. polycolpus provides useful information for further studies on epidemiology and phylogenetics.

Parasitic diseases are harmful and limiting factors in breeding and rearing ornamental fish industry. In this study, 400 apparently healthy ornamental fishes from five species (each species 80 specimens) including: Goldfish (Carassius auratus), guppy (Poecilia reticulate), angelfish (Pterophyllum scalare), discus (Symphsodon discus) and sailfin mollies (Poecilia latipinna) was obtained from a local ornamental fish farm in the north of Iran during 2011 to 2012. The primary purpose of this study was to determine the parasitic infections of aquarium fish in Iran...

There is little information on the genome sequence of Lernaea cyprinacea a major ectoparasite of freshwater fish throughout the world. We subjected the L. cyprinacea transcriptome (adult and free living stages) to Illumina HiSeq 2000 sequencing. We obtained a total of 31,671,751 (31.67 millions) reads for the adult parasitic stage and 33,840,446 (33.84 millions) for the free living stage. The reads were assembled into 50,792 contigs for the adult stage and 69,378 for the free living stage. Using the pfam database, 41...

The complete mitochondrial genome of Lernaea cyprinacea is 14,656 bp in size, containing 13 protein-coding genes (PCGs), 22 transfer RNA genes, two rRNA genes (12S and 16S), as well as two non-coding regions (NCRs, the control regions). The genome organization, nucleotide composition and codon usage do not differ significantly from other Copepodas. The complete mitogenome sequence information of L. cyprinacea provides useful data for further studies on phylogenetics, stock evaluation and conservation genetics...

This research was carried out in order to get overview of current status of infestation with Dactylogyrus spp. and other parasites in common carp (Cyprinus carpio) collected from the ponds around Mashhad in northeast of Iran. A total of 100 common carps from March to December 2011, 61 (61 %) specimens were hosts to parasites. Monogenea dominated the parasite load most of all fishes, whereas Argulus foliaceus (Arthropoda) was the less parasite. Parasites were found as followed: Dactylogyrus extensus (29 %), Dactylogyrus anchoratus (2 %), Ichthyophthirius multifiliis (10 %), Trichodina nigra (7 %), Capillaria spp...

OBJECTIVE: The aim of this study was identification of the parasites of the common carp from Tahtalı Dam Lake. METHODS: The fish were transported live to the laboratory. They were investigated for ectoparasites and endoparasites. The parasite specimens were fixed and identified. RESULTS: During the study, 47 common carp were caught monthly and 3 species of metazoan parasites were found: Dactylogyrus extensus (Monogenea), Contracaecum sp. larvae (Nematoda) and Lernaea cyprinacea (Crustacea)...

BACKGROUND: The aim of this study was to detect the occurrence of parasites in fish in Armand River, Chaharmahal va Bakhtyari Province regarding the importance of native fish population in the river. METHODS: The occurrence of parasites was investigated in 6 native fish (Capoeta capoeta, C. damascina, C. aculeta, Barbus barbulus, B. grypus and Glyptothorax silviae) collected from the current main channel of the river from autumn 2009 to summer 2010. RESULTS: 63...

A total of 323 O. niloticus (168 wild fishes and 155 cultured fishes) were collected from Lake Manzala, Egypt from July to September 2010. The fish samples were examined for both ectoparasites and endoparasites. The parasite community of wild and cultured, O. niloticus consisted of ten parasitic species, one protozoon (Trichodina spp.), six monogenea (Cichlidogyrus sclerosus, C. thurstonae, C. halli typicus, C. tilapiae, C. ergensi, C. tiberianus), one acanthocephalan (Acanthogyrus (Acanthosentis) tilapiae) and two crustacean species (Lernaea cyprinacea and Ergasilus sp...

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Study was conducted to find out the comparative susceptibility of fingerlings of seven species of carps (Labeo fimbriatus, L. rohita, L. calbasu, Catla catla, Ctenopharyngodon idella, Cyprinus carpio and Hypophthamichthys molitrix) grown under both mono and polyculture to Lernaea cyprinacea infection. Under monoculture, C. carpio, L. rohita and L. calbasu, did not acquire Lernaea infection and were thus considered resistant, whereas C. idella, H. molitrix, C. catla and L. fimbriatus were susceptible. Even challenge with higher infective doses of copepodids under monoculture did not result in infection in the resistant fish species...

In this study, 1429 fishes of 18 different species (12 native and six exotic) were sampled from 29 localities to compare the levels of parasitism between native and exotic fish species and to examine the relationship between environmental degradation and parasite diversity. Forty-four putative species of parasites were found and most of these appear to be native parasites, which have not previously been described. Two parasite species, Lernaea cyprinacea and Ligula intestinalis, are probably introduced. Both were found on or in a range of native fish species, where they may cause severe disease...