Rainbow trout leucocyte activity:influence on the ectoparasitic monogenean Gyrodactylus derjavini

Buchmann, K.; Bresciani, J.

doi:10.3354/dao035013

Cited by 57 publications

(40 citation statements)

References 28 publications

(40 reference statements)

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“…Therefore, the basis for the response against gyrodactylids is not likely to be associated with immunoglobulin reactivity. Factors such as complement (Buchmann 1998, Buchmann and Bresciani 1999 have been demonstrated to affect the parasites substantially. If lectins present in fish skin (Buchmann 2001) has been demonstrated that G. derjavini elicits the expression of a number of immune relevant genes in rainbow trout skin (Lindenstrøm et al 2003(Lindenstrøm et al , 2004.…”

Section: Discussionmentioning

confidence: 99%

Homing of Gyrodactylus salaris and G. derjavini (Monogenea) on different hosts and response post-attachment

Buchmann¹,

Madsen²,

Dalgaard³

2004

FOLIA PARASIT

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Abstract. In natural European waters, the congeneric monogeneans Gyrodactylus derjavini Mikailov, 1975 and G. salaris Malmberg, 1957 are primarily found on brown trout Salmo trutta L. and Atlantic salmon Salmo salar L., respectively. Interestingly, rainbow trout, Oncorhynchus mykiss (Walbaum), originating from North America, is as susceptible as brown trout to G. derjavini. However, the mechanisms involved in this host specificity are poorly understood but may include behavioural, mechanical and chemical factors affecting parasite attraction, attachment, feeding, reproduction and host responses. In the present laboratory work, this question has been studied. Detached parasites (either G. derjavini or G. salaris) were offered a choice in small aquaria between fry of rainbow trout, Atlantic salmon and carp Cyprinus carpio L. Within 48 hours more than 90% of G. derjavini colonised rainbow trout and left salmon almost uninfected. Some parasites were found on carp. During the same time span, more than 60% of G. salaris attached to salmon, the rest infected rainbow trout and none were found on carp. Following attachment, the parasites need appropriate stimuli to initiate feeding and reproduction but even such a successful specific colonisation can be followed by a host response. Both humoral and cellular elements have been suggested to participate in these reactions but in the present work it was demonstrated by immunoblotting and immunocytochemistry that no antibodies in host mucus and host plasma bound to any parasite structures or epitopes.

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Section: Discussionmentioning

confidence: 99%

Homing of Gyrodactylus salaris and G. derjavini (Monogenea) on different hosts and response post-attachment

Buchmann¹,

Madsen²,

Dalgaard³

2004

FOLIA PARASIT

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“…It is well known that FCA can be used not only as a vaccine carrier but also as a stimulant of nonspecific immunity (Anderson 1992, Secombes 1994. The nonspecific immune factors including complement and leucocytes are known to negatively influence the establishment of gyrodactyids (Buchmann 1998, 1999, Harris et al 1998, Buchmann & Bresciani 1999. Buchmann & Bresciani (1999) reported that Gyrodactylus derjavini survived less than 3 h when exposed to supernatant from peritonea1 macrophages, which were considered to be activated by i.p.…”

Section: Discussionmentioning

confidence: 99%

Immunization of cultured juvenile rockfish Sebastes schlegeli against Microcotyle sebastis (Monogenea)

Kim¹,

Hwang²,

Cho³

et al. 2000

Dis. Aquat. Org.

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To determine whether immunization with Microcotyle sebastis antigen could induce protection against the parasite's establishment, naive juvenile rockfish were immunized by injection or immersion with whole worm antigen of M. sebastis. The infestation intensities of immunized groups following a challenge (2 wk after boosting) with 5000 M. sebastis eyed-eggs were significantly lower than those of control groups, when determined 7 wk postinfectlon. The fish in the groups boosted with M. sebastis antigen showed stronger protection than unboosted groups. The control group injected with FCA only showed a significantly smaller number of worms than the control group, which was immersed in PBS containing seawater. The results strongly suggest that both specific and nonspecific immune factors participate in the protection of rockfish against M. sebastis establishment.

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“…Hypersecretion of mucus [293][294][295][296][297] may be associated [296] or not [298] with a localized epithelial cell hyperplasia. Perhaps the hyperplasia is mediated by IL-1 released by activated macrophages [299]. Inflammation is the other cellular process implied in the parasite response in the fish skin.…”

Section: Fish Skin Mucosal Immunologymentioning

confidence: 99%

An Overview of the Immunological Defenses in Fish Skin

2012

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The vertebrate immune system is comprised of numerous distinct and interdependent components. Every component has its own inherent protective value, and the final combination of them is likely to be related to an animal's immunological history and evolutionary development. Vertebrate immune system consists of both systemic and mucosal immune compartments, but it is the mucosal immune system which protects the body from the first encounter of pathogens. According to anatomical location, the mucosa-associated lymphoid tissue, in teleost fish is subdivided into gut-, skin-, and gill-associated lymphoid tissue and most available studies focus on gut. The purpose of this paper is to summarise the current knowledge of the immunological defences present in skin mucosa as a very important part of the fish immune system, serving as an anatomical and physiological barrier against external hazards. Interest in defence mechanism of fish arises from a need to develop health management tools to support a growing finfish aquaculture industry, while at the same time addressing questions concerning origins and evolution of immunity in vertebrates. Increased knowledge of fish mucosal immune system will facilitate the development of novel vaccination strategies in fish.

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Rainbow trout leucocyte activity:influence on the ectoparasitic monogenean Gyrodactylus derjavini

Cited by 57 publications

References 28 publications

Homing of Gyrodactylus salaris and G. derjavini (Monogenea) on different hosts and response post-attachment

Homing of Gyrodactylus salaris and G. derjavini (Monogenea) on different hosts and response post-attachment

Immunization of cultured juvenile rockfish Sebastes schlegeli against Microcotyle sebastis (Monogenea)

An Overview of the Immunological Defenses in Fish Skin

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