Ciências Veterinárias

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http://repositorio.ufes.br/handle/10/17470
Programa de Pós-Graduação em Ciências Veterinárias

Centro: CCAE
Telefone: (28) 3552 8983
URL do programa: http://www.cienciasveterinarias.ufes.br/pos-graduacao/PPGCV

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Navegando Ciências Veterinárias por Autor "Alves, Vinicius Menezes Tunholi"

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    Alterações fisiológicas e reprodutivas de pseudosuccinea columella (basomatophora: lymnaeidae) frente a infecção experimental por heterorhabditis bacteriophora hp88 (rhabditida: heterorhabditidae)
    (Universidade Federal do Espírito Santo, 2022-02-21) Sperandio, Natania do Carmo; Martins, Isabella Vilhena Freire; https://orcid.org/0000000287003065; http://lattes.cnpq.br/6446528818006897; Chambarelli, Melissa Carvalho Machado do Couto; Alves, Vinicius Menezes Tunholi; Alves, Victor Menezes Tunholi
    The mollusk Pseudosuccinea columella acts as an obligate intermediate host (IH) in the Fasciola hepatica life cycle and this fluke is responsible for fasciolosis, a disease that affects the liver and bile ducts of many mammals, especially production animals and humans. In this sense, there are increasing studies that seek effective control, whether in the vertebrate host, acting on the adult parasite, or in the IH, compromising the development of the larval stages of the helminth. Thus, the present study aimed to evaluate, under laboratory conditions, the susceptibility of P. columella against the concentration of 150 infective juvenile of Heterorhabditis bacteriophora HP88/mollusk, exposed for 24 and 48 hours, accompanied by their respective control groups. After exposure, the mollusks were evaluated for 21 days regarding: accumulated mortality; number of eggs laid and hatchability rate; biochemical changes, through the measurement of total protein (PPT), urea, uric acid, glucose, alanine aminotransferase (ALT), aspartate aminotransferase (AST) and glycogen; and possible histopathological changes. It was found that exposure to entomopathogenic nematodes (EPNs) induced important biochemical changes, such as: reduction of glucose, PPT and glycogen levels, characterizing the depletion of energy reserves in these hosts as a result of competition for such substrates faced by nematodes; accumulation of nitrogenous products as a result of activation of the aerobic pathway, in response to negative energy balance; in addition to the increase in cell injury marker enzymes. A cumulative mortality rate of 65.52% was reached in the group exposed for 48 hours and impairment of reproductive function, observed by interference in hatchability, in relation to the respective control, linked to histological disorders