Variasi Morfologi Holdfast Lernaea Yang Menyerang Ikan Gurami Di Jawa Timur <Br><I>[Morphological Variation Of Lernaea Holdfast Infest Gouramy In East Java]<I>

Abstract Lernaeosis is one of the parasitic diseases in freshwater fish caused by Lernaea cyprinacea. These parasites infest many freshwater fish. Identification of parasites carried by observing the morphology of holdfast as an attachment organ. This study aims to make observations on the variation of morphology of Lernaea holdfast's in East Java and the identification of Lernaea infest gouramy in East Java.

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Occurrence of parasitic and bacterial diseases in Thai freshwater fish

Journal of Agricultural and Crop Research ◽

10.33495/jacr_v8i10.20.168 ◽

2020 ◽

Vol 8 (10) ◽

pp. 210-214

Author(s):

Chutharat Kanchan ◽

◽

Puttachat Imjai ◽

Nukoon Kanchan ◽

Aonanong Chaiyara ◽

...

Keyword(s):

Freshwater Fish ◽

Aeromonas Hydrophila ◽

Fish Stock ◽

Parasitic Diseases ◽

Fish Pathogens ◽

Anabas Testudineus ◽

Bacterial Diseases ◽

Staphylococcus Epidermis ◽

Channa Striata ◽

Local Fisherman

The present study was aimed to investigate the occurrence of parasitic and bacterial diseases in some freshwater fish in NongBo reservoir, Maha Sarakham Province. The sampling was randomly collect from three sites by gillnets, bag nets and cast nets from the local fisherman during October 2015 to September 2016. A total of eight freshwater fish species were identified namely Oreochromis niloticus, Hampala dispar, Pristolepis fasciata, Trichopodus pectoralis, Anabas testudineus, Oxyeleotris marmorata, Channa striata and Clarias batrachus. The parasitic diseases found on the sampled fish specied were external parasites such as Trichodina sp., Dactylogyrus sp. and Digenea gen.sp. The bacterial diseases identified were Aeromonas hydrophila, Acinetobacter baumannii, Plesiomonas shigelloides, Serratia odorifera and Staphylococcus epidermis. The dominant species of bacterium was Aeromonas hydrophila. This study revealed that the natural fish stock could be risk from the fish pathogens both parasites and bacteria. Keywords: Reservoir, external parasite, fish pathogens.

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Seasonal variation of parasitism in pejerrey Odontesthes bonariensis (Atheriniformes, Atherinopsidae) from La Viña reservoir (Córdoba, Argentina)

Revista Brasileira de Parasitologia Veterinária ◽

10.1590/s1984-29612008000100006 ◽

2008 ◽

Vol 17 (1) ◽

pp. 28-32 ◽

Cited By ~ 6

Author(s):

Miguel Mancini ◽

Cesar Bucco ◽

Victor Salinas ◽

Alejandro Larriestra ◽

Ruben Tanzola ◽

...

Keyword(s):

Seasonal Variation ◽

Freshwater Fish ◽

Body Condition ◽

Central Region ◽

Relative Weight ◽

Parasite Burden ◽

Parasite Infection ◽

Seasonal Differences ◽

Odontesthes Bonariensis ◽

Lernaea Cyprinacea

The pejerrey Odontesthes bonariensis is the most important freshwater fish of Argentina central region. The present study was conducted to describe the seasonal variation of parasitism in O. bonariensis from La Viña reservoir (31º 17'S, 65º 01'W), located in the province of Córdoba, Argentina. Between years 1999 and 2002, 573 fishes were caught, and their parasite infection and relative weight (Wr) were assesed. Three parasites were found, Lernaea cyprinacea (Crustacea), Contracaecum spp. larvae (Nematoda) and Cangatiella macdonaghi (Cestoda). Overall, Contracaecum spp. prevalence and intensity were very low. Lernaea cyprinacea and Cangatiella macdonaghi prevalences increased during summer and spring (P < 0.01), respectively. Lernaea cyprinacea infection showed also seasonal differences in intensity (P < 0.05), as well as C. macdonaghi regarding parasites density (P < 0.01). Cangatiella macdonaghi average parasites density was 32.0 (±22.5) cestodes per cm³ of digestive content. No association between parasitism and fish relative weight was found. Besides the seasonality variations observed, the parasite burden found did not compromise fish body condition.

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Distribution pattern of crustacean ectoparasites of freshwater fish from Brazil

Revista Brasileira de Parasitologia Veterinária ◽

10.1590/s1984-29612015036 ◽

2015 ◽

Vol 24 (2) ◽

pp. 136-147 ◽

Cited By ~ 24

Author(s):

Marcos Tavares-Dias ◽

Miguel Benedito Ferreira Dias-Júnior ◽

Alexandro Cezar Florentino ◽

Luís Mauricio Abdon Silva ◽

Alan Cavalcanti da Cunha

Keyword(s):

Distribution Pattern ◽

Freshwater Fish ◽

Distribution Patterns ◽

Similar Distribution ◽

Host Fish ◽

Site Specific ◽

Crustacean Species ◽

Geographical Patterns ◽

Lernaea Cyprinacea ◽

Host Parasite

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. We organized different host-parasite systems into matrices grouping species at different taxonomic and infestation levels and according to host parameters. Five families of parasites (Ergasilidae, Argulidae, Lernaeidae, Lernaeopodidae and Cymothoidae) distributed into 76 species of 27 genera were analyzed in the host samples, which presented dominance of Ergasilidae species, mainly from the genus Ergasilus. Some crustaceans are host and site-specific, especially in relation to fish in particular habitats and lifestyles (e.g. Perulernaea gamitanae, Anphira branchialis and Riggia paranensis), while other parasites frequently have no preference (e.g. Lernaea cyprinacea and Braga patagonica). We found broadly similar distribution patterns for some crustacean species among the different localities, whereas other species showed well-defined geographical patterns, and these findings were discussed.

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