First record of the Japanese fish louse (Argulus japonicas) in Montenegro (Crustacea: Branchiura)

In this paper, Argulus japonicas Thiele, 1900, the Japanese fish louse is reported for the first time for the fauna of Montenegro.

DETEKSI EKTOPARASIT Argulus sp. PADA BUDIDAYA IKAN KARPER (Cyprinus carpio L) DI UPTD- BALAI PENGEMBANGAN BUDIDAYA IKAN AIR TAWAR AIKMEL KABUPATEN LOMBOK TIMUR

Argulus sp. is a fish louse disease that attacks fish on the outside of the body (Ectoparasites) resulting in wounds and bite marks being a trigger factor for the onset of other diseases (secondary diseases) resulting in losses for fish farmers. This research aims to find out if it detected Argulus ectoparasites sp in carper fish cultivation (Cyprinus carpio,L) in UPTD-BPBIAT Aikmel. This study uses a descriptive study design with observational survey type. Fish sampling is carried out using random sampling in one shot using a net with a total of 10 samples. Ectoparasite examination is carried out by making a direct observation then carried out the examination of the head, fins, tail with Alcohol Swabs 70%, . The research results shows that 9 fish were positive infectedwith Argulus sp

The cost of infection: Argulus foliaceus and its impact on the swimming performance of the three-spined stickleback ( Gasterosteus aculeatus )

For fish, there can be multiple consequences of parasitic infections, including the physical impacts on swimming and the pathological costs of infection. This study used the three-spined stickleback ( Gasterosteus aculeatus ) and the ectoparasitic fish louse, Argulus foliaceus , to assess both physical (including form drag and mass) and pathological effects of infection. Both sustained (prolonged swimming within an open channel flume) and burst (C-start) swimming performance were measured on individual fish before (trials 1–2) and after infection (trials 3–5). Experimental infection occurred shortly before the third trial, when the physical impacts of infection could be separated from any subsequent pathology as transmission of adult parasites causes instantaneous drag effects prior to observable pathology. Despite the relatively large size of the parasite and corresponding increase in hydrodynamic drag for the host, there were no observable physical effects of infection on either sustained or burst host swimming. By contrast, parasite-induced pathology is the most probable explanation for reduced swimming performance across both tests. All sticklebacks displayed a preference for flow refugia, swimming in low-velocity regions of the flume, and this preference increased with both flow rate and infection time. This study suggests that even with large, physically demanding parasites their induced pathology is of greater concern than direct physical impact.

Therapeutic management of Argulosis in Carp ponds, Andhra Pradesh, India

<p><strong>Background:</strong> The genus <em>Argulus</em> sp. belongs to class Crustacea (Branchiura), which is commonly called as fish louse. These are common parasites on freshwater fish like carps (Both Indian Major Carps and Exotic Carps).</p><p><strong>Objectives:</strong>The aim of present study is to determine the prevalence, severity of infestation and control measures of Argulosis in Carp ponds.</p><p><strong>Results: </strong>In the present work about 233 fishes were examined, 53 were found infected (22.74%) and severity of infestation varied from 0.5 to 2. <em>Argulus</em> sp. were found and infected various organs such as dorsal fins, anal fin, pectoral fins, pelvic fins and head region of carps.</p><p><strong>Conclusion: </strong>The present study also, brings about the conclusion that the prevalence rate of <em>Argulus</em> sp. is high in <em>Labeo rohita</em> followed by <em>Cirrhinus mrigala</em> and <em>Catla catl</em>a respectively. </p>