Immune Defence Mechanisms in the Sea Bass Dicentrarchus labrax L.

Buonocore, Francesco; Scapigliati, Giuseppe; Zaccone, Giacomo; Meseguer, José; García‐Ayala, Alfonsa; Kapoor, B. G.

doi:10.1201/b10188-7

Cited by 4 publications

(5 citation statements)

References 155 publications

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“…Fish immune cells show the same main features as those of other vertebrates, and lymphoid and myeloid cell families have been determined. Innate cellular defences of fish involve a variety of leukocytes, such as mononuclear phagocytes, polymorphonuclear leukocytes, and nonspecific cytotoxic cells (Buoncore & Scapigliati 2009). The so‐called professional phagocytes are among the most intensively studied immune cells in fish and comprise the granulocytes, functionally equivalent to the neutrophils of higher vertebrates, macrophages, and lymphocytes.…”

Section: Immunology Of Fish Larvaementioning

confidence: 99%

Microbiology and immunology of fish larvae

Vadstein¹,

Bergh²,

Gatesoupe³

et al. 2013

Reviews in Aquaculture

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143

131

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For most marine aquaculture species, one of the main bottlenecks is the stable production of high quality juveniles. The high and unpredictable mortality in the first weeks after hatching of marine fish larvae remains a challenging problem that needs to be solved. The severity of the problem differs between species, but cannot be considered adequately solved for any species. Both scientific evidence and experience in hatcheries for a variety of fish, shrimp and shellfish species are accumulating as support for the hypothesis that detrimental fish–microbe interactions are the cause of these problems. Host–microbe interactions in reared fish are still poorly understood, except for a few pathogens, and empirical data of the quality required to test this hypothesis, are lacking. This article provides an overview on the current knowledge of the microbial environment of fish larvae, including methodological aspects to characterize the microbial community (both using culture‐dependent and culture‐independent methods). Further, the current knowledge of the immunology of fish larvae is reviewed, including recent advances in the understanding of toll‐like receptors, inflammatory cytokines, mast cells and piscidins, and the ontogeny of the adaptive immune system. Finally, we provide an overview of the state of the art with respect to steering of microbial communities associated with fish larvae – both steering of community composition and of its activity (e.g. by quorum sensing interference).

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Section: Immunology Of Fish Larvaementioning

confidence: 99%

Microbiology and immunology of fish larvae

Vadstein¹,

Bergh²,

Gatesoupe³

et al. 2013

Reviews in Aquaculture

Self Cite

143

131

View full text Add to dashboard Cite

show abstract

“…Along with zebrafish and carp, sea bass is one of the most thoroughly investigated teleosts in terms of immune system maturation (Buonocore and Scapigliati, ). It is well known that the sea bass head kidney develops from 10 dph on and begins to produce immunoreactive cells from 35 dph on.…”

Section: Introductionmentioning

confidence: 99%

Sensitive periods for 17β‐estradiol exposure during immune system development in sea bass head kidney

Seemann

Knigge

Duflot

et al. 2015

J of Applied Toxicology

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An increasing body of evidence suggests that sex steroids play an important role in the development and regulation of vertebrate immune defense. Therefore, compounds with estrogenic activity may influence the immune system via receptor-mediated pathways. The presence of estrogen receptors in immune cells and organs during the early stages of development may indicate that female steroid hormones are involved in the maturation of the fish immune system. This is of particular importance, as some marine fish are probably exposed to sources of exogenous estrogens while they reside in their estuarine nursery grounds. In this study, the influence of 17β-estradiol (E2) on estrogen receptor and cytokine gene expression was assessed in juvenile sea bass (Dicentrarchus labrax) together with characterization of the head kidney leukocyte populations and corresponding phagocytic activity during organ regionalization from 98 to 239 dph. E2 exposure, beginning at 90 dph resulted in indirect and delayed modifications of interleukin 1β and estrogen receptor α gene expression, which may affect B-lymphocyte proliferation in the sea bass head kidney. The E2 treatment of 120 dph fish led to an increase in estrogen receptor β2 and a decrease in transforming growth factor β1 gene expression, which coincided with decreased phagocytic activity of head kidney lymphocytes and monocytes/macrophages. Additionally, these changes were observed during developmental periods described as critical phases for B-lymphocyte development in mammals. Consequently, exogenous estrogens have the potential to modify the innate immune response in juvenile sea bass and to exert detrimental effects on head kidney development. Copyright © 2015 John Wiley & Sons, Ltd.

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“…Smaller common dolphinfish had higher infection indices when parasitized by C. bonito . Two possibilities may account for the inverse relationship between host size and infection indices: (1) Young fish (mainly 500–800 mm total length) are widely distributed in the coastal zone of Ecuador (see Aires‐da‐Silva et al, 2014), where there is high diversity of fish and parasitic copepods (Morales‐Serna et al, 2015), thus increasing the chances of parasite–host interactions; (2) larger fish have higher immune resistance as a defense mechanism against external infections than smaller fish (Buonocore & Scapigliati, 2009; Robert, 2012), thus minimizing the chances of parasite infections. The infection indices of the remaining copepod taxa in our study were unrelated to host size, probably because of their sporadic frequency and very low PR.…”

Section: Discussionmentioning

confidence: 99%

“…(2) larger fish have higher immune resistance as a defense mechanism against external infections than smaller fish (Buonocore & Scapigliati, 2009;Robert, 2012), thus minimizing the chances of parasite infections. The infection indices of the remaining copepod taxa in our study were unrelated to host size, probably because of their sporadic frequency and very low PR.…”

Section: Ecologymentioning

confidence: 99%

Persistent companionships: The parasitic copepod community of the dolphinfish Coryphaena hippurus on the Ecuadorian coast

Santana‐Piñeros

Mera‐Loor

Suárez‐Morales

et al. 2022

Invertebrate Biology

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The common dolphinfish, Coryphaena hippurus, is an important and widespread fishing resource in tropical and subtropical latitudes. It harbors a diverse array of parasitic copepods, but data on their infection indices are quite limited worldwide. We analyzed its parasitic copepod community and infection indices based on the examination of 615 individuals of C. hippurus landed monthly on the coast of Ecuador, over a period of 1 year. Both the opercular cavities and gills of the sampled fish were examined for parasitic copepods, of which nine taxa were recorded: Brachiella quaternia, Caligus belones, C. bonito, C. coryphaenae, C. productus, Euryphorus brachypterus, E. nordmannii, Lepeophtheirus sp., and Lernaeenicus sp. The finding of five of these species (i.e., B. quaternia, C. belones, C. productus, E. brachypterus, and E. nordmannii)represents new geographic records. C. bonito showed the highest prevalence (83%), mean abundance (5.46 ± 4.99), and mean intensity (6.57 ± 4.99), followed by B. quaternia (prevalence = 32%, mean abundance = 1.89 ± 5.66, mean intensity = 5.89 ± 5.71). The infection indices of C. bonito decreased with increasing host length and were higher in females than in males. The parasitic copepod community of common dolphinfish in this study was similar to communities in other parts of its geographic distributional range, including the Atlantic Ocean, the Mediterranean Sea, and the Eastern Pacific, consistently dominated by a generalist parasitic species. This is the first and most detailed quantitative evaluation of the parasitic copepods associated with the dolphinfish and updates the extant parasitological data for this host.

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Immune Defence Mechanisms in the Sea Bass Dicentrarchus labrax L.

Cited by 4 publications

References 155 publications

Microbiology and immunology of fish larvae

Microbiology and immunology of fish larvae

Sensitive periods for 17β‐estradiol exposure during immune system development in sea bass head kidney

Persistent companionships: The parasitic copepod community of the dolphinfish Coryphaena hippurus on the Ecuadorian coast

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