Egg laying strategies and effect of temperature on egg development of Argulus siamensis

Sahoo, P.K.; Mohanty, Jyotirmaya; Hemaprasanth,; Kar, Banya; Mohanty, B.R.; Garnayak, Sushil Kumar; Jena, J. K.

doi:10.1007/s12639-012-0148-6

Cited by 24 publications

(17 citation statements)

References 17 publications

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“…According to Shafir and Oldewage (1992), peaks in the population of A. japonicus corresponded with reduced water levels as well as high temperatures. Sahoo et al (2013a) found optimum temperature of 28°C for the development of the eggs of A. siamensis into the infective metanaupliar stage. Mallik et al (2010) recorded the highest prevalence (70.1 %) in September and the lowest in December for S. richardsonii and T. putitora in Bhimtal lake while investigating the occurrence of Argulus spp.…”

Section: Risk Factors Associated With Argulosismentioning

confidence: 91%

“…Hakalahti et al (2004a, b) found that A. coregoni preferred to lay eggs on hard, dark colored and irregular substrates, preferably in deepwater or in the region covered with shadow. Sahoo et al (2013a) observed that A. siamensis showed opportunistic behavior with regard to egg laying wherein it used both, living and nonliving substrata for the purpose. It used the shells of freshwater snails, the runners of the water weeds and dead fish for laying eggs (Table 2).…”

Section: Risk Factors Associated With Argulosismentioning

confidence: 99%

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A prospective of epidemiological intervention in investigation and management of argulosis in aquaculture

Kumar

Vidya

et al. 2016

Aquacult Int

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Argulus, an obligate macroectoparasite, infests a wide range of fishes causing severe economic loss to aquaculture industry. The application of chemotherapeutants is the most common approach to combat argulosis. But it is very expensive and has a range of negative impacts on the host and environment. An alternative to the extensive use of chemotherapeutics is to restrict Argulus infestation by adopting a range of biosecurity and quarantine measures. However, before adopting these measures it is essential to adequately understand the complex interaction among the host, parasite and environment, in order to identify key factors affecting parasite dynamics and to formulate a possible management strategy. Epidemiology provides key tools to advance our understanding of diseases and allows bringing convergence in controlling the disease. Compared to terrestrial diseases, relatively few epidemiological studies have been conducted to investigate aquatic animal diseases. For Argulus spp., the complex real-world dynamics of transmission, reproduction and the host specificity and the role of these parasites as a vector for various pathogens are very complex to develop an effective epidemiological framework. This review principally focuses on the application of epidemiological concepts, providing insights about the sampling frame, commenting upon the use of simple deterministic susceptible-infectedremoved models and examines the determinants of transmission and spread of argulosis. Further, this paper describes the risk factors associated with Argulus infestation and the importance of risk analysis in intervention against its epizootics. Overall, this review is intended to highlight the need for development of a more extensive epidemiological approach to combat argulosis in aquaculture.Saurav Kumar and T. Sathish Kumar have contributed equally to this work.

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Section: Risk Factors Associated With Argulosismentioning

confidence: 91%

Section: Risk Factors Associated With Argulosismentioning

confidence: 99%

A prospective of epidemiological intervention in investigation and management of argulosis in aquaculture

Kumar

Vidya

et al. 2016

Aquacult Int

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“…A population of A. siamensis was maintained on stock rohu (approximately 500 g) in glass aquaria. The eggs deposited on the sides and bottom of the aquaria were collected in beakers containing tap water and incubated at 28°C with daily refreshment of water for hatching in a previously standardized way (Sahoo et al., ). After hatching, the metanauplii were counted and maintained in a tank for development to adult parasite on host rohu.…”

Section: Methodsmentioning

confidence: 99%

Labeo rohitaandArgulus siamensisinfection: Host size, local inflammatory reaction and immunity modulate ectoparasite load on fish

et al. 2017

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Parasite species often show a heterogeneous, highly dispersed pattern of infestation within hosts. Varieties of factors including morphological, physiological, immunological and nutritional characteristics affect the infestation level of a specific parasite in homogenous pray. Limited attempts, however, have been made to explore such underlying drivers of infestation pattern. Here, three stages of Labeo rohita (fingerling, juvenile and pre-adult) were challenged with ectoparasite, Argulus siamensis in same aquaria. The parasite load on individuals was determined at 5-day interval for 1 month. The load was found to be highest in pre-adult stage followed by juveniles and fingerlings. On day 20 post infection, the load of parasite on pre-adult fish was high along with detectable skin damages. Skin tissues were collected for immune gene expression analysis and histopathology. Histological studies showed increased melanization in the dermis and mild inflammatory cellular reactions in pre-adult fish whereas, massive subcutaneous myositis with engorged blood vessels were observed in fingerlings. The expression levels of various inflammation and innate immune-related genes viz., interleukin (IL)-8, IL-10, IL-11, IL-15, natural killer enhancing factor, toll-like receptor 4, apolipoprotein A-I and immunoglobulin Z were significantly high in skin samples of infected fingerlings as compared to other two growth stages or controls of each stage. On the other hand, the expression of immunoglobulin M was down-regulated in all infected samples as compared to their respective controls. The results thus depict that local immuno-inflammatory response plays a significant role in determining susceptibility of host in intra-specific group, and has important implications for ecology and aquaculture.

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“…A population of A. siamensis was maintained on stock rohu (approximately 500 g) in glass aquaria. The eggs deposited on the sides and bottom of the aquaria were collected in beakers containing tap water and incubated at 28°C with daily refreshment of water for hatching in a previously standardized way (Sahoo, Mohanty, Hemaprasanth, Kar, Mohanty, Garnayak & Jena ). Upon hatching, the metanauplii were counted and maintained in similar conditions as the eggs till used in challenge test.…”

Section: Methodsmentioning

confidence: 99%

The immune response in rohu,Labeo rohita(Actinopterygii: Cyprinidae) toArgulus siamensis(Branchiura: Argulidae) infection: kinetics of immune gene expression and innate immune response

Kar

Mohanty

Kannur³

et al. 2013

Aquac Res

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Argulus siamensis is a major pathogen in freshwater aquaculture. The immune responses of Indian major carp, Labeo rohita to experimental infection of A. siamensis was evaluated by quantitation of immune-relevant gene expression in head kidney and skin, and serum innate immune parameters through the course of infection. In skin of infected fish, antioxidant genes like natural killer cell enhancing factor (NKEF-B) and superoxide dismutase (MnSOD) were significantly up-regulated in addition to lysozyme G and b 2 microglobulin (b 2 M). Both tumour necrosis factor a (TNFa) and toll-like receptor 22 (TLR22) genes were significantly down-regulated in skin during early phases of the infection. Most of the genes exhibited significant down-regulation in head kidney; immunoglobulin (IgM) and b 2 M genes being the exceptions which were significantly up-regulated at 12 h and 3 days post infection. Most of the innate immune parameters like serum complement activity and ceruloplasmin levels showed significant reduction in infected fish. The observed results are indicative of A. siamensis modulating the immune response of rohu by down-regulation of many immune factors which may explain the susceptibility of rohu to A. siamensis infection. The interaction of this parasite with the host need to be further explored to understand its pathogenesis.

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Egg laying strategies and effect of temperature on egg development of Argulus siamensis

Cited by 24 publications

References 17 publications

A prospective of epidemiological intervention in investigation and management of argulosis in aquaculture

A prospective of epidemiological intervention in investigation and management of argulosis in aquaculture

Labeo rohitaandArgulus siamensisinfection: Host size, local inflammatory reaction and immunity modulate ectoparasite load on fish

The immune response in rohu,Labeo rohita(Actinopterygii: Cyprinidae) toArgulus siamensis(Branchiura: Argulidae) infection: kinetics of immune gene expression and innate immune response

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