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(Reference retrieved automatically from SciELO through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Mechanisms of resistance and tolerance against parasites in fish: the impairments caused by Neoechinorhynchus buttnerae in Colossoma macropomum

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Author(s):
JAQUELINE D. BILLER [1] ; EDSANDRA C. CHAGAS [2]
Total Authors: 2
Affiliation:
[1] Universidade Estadual Paulista/UNESP. Faculdade de Ciências Agrárias e Tecnológicas - Brasil
[2] Empresa Brasileira de Pesquisa Agropecuária - Embrapa Amazônia Ocidental - Brasil
Total Affiliations: 2
Document type: Journal article
Source: Anais da Academia Brasileira de Ciências; v. 94, n. 4 2022-07-06.
Abstract

Abstract Tambaqui is the second native fish most produced species in Brazil. Currently, tambaqui fish farms deals with serious sanitary problems due to the prevalence of the parasite Neoechinorhynchus buttnerae. However, the prevalence of the acanthocephalan parasite infections depends on the resistance and tolerance interactions between the host organisms and parasites. The immune response against parasites is divided between innate and acquired immunity. The innate defense is a result of physical barriers, cellular and humoral compounds. Acquired defense occurs through the production of antibodies (humoral) and is mediated by cells, mainly by type 2 T helper lymphocytes. Most parasites secrete a variety of immunomodulatory compounds that allow coexistence with the host and chronicity of the parasite. The host-parasite relationship is complex and makes prevention and treatment difficult. However, some studies show that the use of immunostimulants may have “systemic” effects. These include improvement of the intestinal mucosa health and also in the production of cellular and humoral compounds in the whole body, thus assisting treatment and control. As such, it is important to understand the mechanisms of resistance and tolerance in the host organisms so that prevention and treatment measures can be effective. (AU)

FAPESP's process: 12/22016-3 - Study of the immunostimulating potential of b-glucan and its mode of action aiming at new administration protocols in tilapia, Oreochromis niloticus
Grantee:Jaqueline Dalbello Biller Takahashi
Support Opportunities: Research Grants - Young Investigators Grants