Banca de QUALIFICAÇÃO: TAIANE NUNES MAGALHÃES

Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.
STUDENT : TAIANE NUNES MAGALHÃES
DATE: 28/08/2024
TIME: 14:00
LOCAL: Prédio das coleções, Bloco 4b (híbrido)
TITLE:

Assessment of Health Risks Associated with the Consumption of Fish from Urban Streams of Porto Velho/RO

KEY WORDS:

Parasite-host-environment; Zoonoses; One Health and; Water resource

PAGES: 71
BIG AREA: Ciências Biológicas
AREA: Zoologia
SUMMARY:

The concept of One Health has gained prominence in recent years, especially after the COVID-19 pandemic. This concept values prevention and sustainability, combining human, animal and environmental health. In this context, the parasite-host-environment relationship highlights the importance of ecological balance and its implications for Public Health. Parasites are evolutionarily successful organisms, actively integrate ecological interrelationships and play fundamental roles in ecosystems. Therefore, its importance must be considered by public authorities and environmental managers when implementing methods for restoring and conserving water resources. The objective of this work was to demonstrate that parasites are bioindicators of Environmental Health. From the systematic review using the PRISMA method, it was possible to identify gaps in information about the occurrence and prevalence of endoparasites in Oreochromis niloticus, as well as studies on ectoparasitism, of which the majority focused on the topic come predominantly from the South and Northeast of Brazil. The lack of detailed investigations and specific methodologies for the identification of endoparasites limits the understanding of the risks associated with the transmission of zoonoses related to the consumption of these fish. To fill this gap, forty specimens of O. niloticus were collected in four streams within the urban perimeter of the Municipality of Porto Velho/RO. The fish were necropsied and their intestines were collected for coprological examinations. The somatic muscles were evaluated with the aid of a stereomicroscope in search of parasite larvae, in which the absence of parasites was observed. On the other hand, there was a high incidence of eggs and larvae of enteroparasites common in humans and other mammals, such as Ascaris lumbricoides, Hymenolepis nana, Ancylostoma sp., Taenia sp., among others, confirming the contamination of the tributary by sewage systems. The absence of parasites in the muscles of fish may seem positive at first glance, however, the combination of the lack of common parasites in the muscles with the high infestation of eggs in the intestinal lumens reflects the anthropization of streams and the lack of adequate sanitation, generating a risk significant for Public Health. This scenario of environmental degradation and loss of biodiversity is evidenced by the total absence of parasite larvae in fish meat. It is concluded that an anthropic aquatic environment can select parasites that are more resistant to contamination, reducing the biodiversity of commensal parasites and interfering with the quality of trophic life of animals directly and indirectly. | Pointed out as an important bioindicator, studies with free-living fish can measure the degradation of the stream, highlighting the lack of biodiversity, which prevents biological cycles from being completed and provides a favorable environment for invasive species.

COMMITTEE MEMBERS:
Presidente - 2282442 - CAROLINA RODRIGUES DA COSTA DORIA
Interno - 1427035 - WILSON GOMEZ MANRIQUE
Externo à Instituição - JERONIMO VIEIRA DANTAS FILHO