Banca de DEFESA: ANGÉLICA LAGO CARVALHO

Uma banca de DEFESA de DOUTORADO foi cadastrada pelo programa.
DISCENTE : ANGÉLICA LAGO CARVALHO
DATA : 29/03/2019
HORA: 10:00
LOCAL: Auditório do PPGCTIA
TÍTULO:

Diagnosis and ecological aspects of the parasites of two species of Cichla (Perciformes: Cichlidae) and Pseudoplatystoma (Siluriformes: Pimelodidae) in the sub-basin of the Jamari-Ariquemes river, Rondônia state

PALAVRAS-CHAVES:

helminths, Amazon, seasonality

PÁGINAS: 57
GRANDE ÁREA: Ciências Agrárias
ÁREA: Medicina Veterinária
RESUMO:

The objective of the research was to make a diagnosis of the composition and structure of parasitic communities of native fish from rivers that make up the sub-basin of the Jamari River. Samples of fish, already slaughtered, were obtained from local fishermen during the period from April 2016 to April 2018. A quantitative and qualitative approach was used to identify, at the level of parasitic infrapopulations, the ecological descriptors of prevalence, abundance, average abundance, intensity and average intensity for each species of parasite. Chapter I describes the parasitic infracommunity of 120 specimens of Cichla monoculus (Spix and Agassiz, 1831), its parasitic fauna was composed of a total of 2.369 helminth parasites, from 13 different taxa: 3 digenetic, 2 monogenetic; 2 cestodes; 5 nematodes and 1 pentastomide. Comparison of prevalence according to the seasonality of the region showed that protocephalid cestodes were the most prevalent species at all collection stations and nematodes were most prevalent in the dry season 2017 and rainy 2016/17. Of the 75 specimens of C. piquiti Kullander and Ferreira, 2006 analyzed 55 were infected by at least 1 parasite, a total of 1,100 helminth parasites of 12 different taxa: 3 digenetic; 1 monogenetic; 2 cestodes and 6 nematodes were found. The prevalence and parasitic abundance of C. monoculus has been shown to be influenced by regional seasonality. The total length of the hosts did not correlate with the abundance of the metazoan parasites and the average abundance was not influenced by sex for both species. In Chapter II of the 50 specimens of P. tigrinum (Valenciennes, 1840) 45 were infected by at least one species of parasite, with a prevalence of 90% and of 51 specimens of P. fasciatum (Linnaeus, 1766) with 100% prevalence. The parasitic fauna of Pseudoplatystoma was composed of 19.283 helminths from different taxa: 3 digenetic; 5 cestodes; 3 crustacea; 1 monogenetic; 4 nematodes; 1 myxozoa. The nematodes and monogeneas presented higher prevalence for P. tigrinum. Total length and mean abundance for nematode larvae showed a negative correlation, no significant correlation was observed for the other groups, and mean abundance was not influenced by sex. For P. fasciatum cestoides, nematodes and monogeneas presented higher prevalence, total fish length and abundance for Peltidocotyle rugosa, Nominoscolex sudobim showed positive correlation, mean abundance was influenced by host sex parasitized by Peltidocotyle rugosa, Monticellia spinulifera, Nominoscolex sudobim where females showed higher average abundance in relation to males.

MEMBROS DA BANCA:
Externo à Instituição - ANDERSON DIAS CÉZAR - UES
Externo à Instituição - DIMITRI RAMOS ALVES - UNIFOA
Externo à Instituição - FABIANO PASCHOAL DE OLIVEIRA - OUTRO
Presidente - 2242796 - JOSE LUIS FERNANDO LUQUE ALEJOS
Externo à Instituição - LETICIA GABRIELA POBLETE VIDAL - UFRRJ
Externo à Instituição - LUIS CLÁUDIO MUNIZ PEREIRA - FIOCRUZ
Externo ao Programa - 3092534 - RAQUEL DE OLIVEIRA SIMOES