Banca de QUALIFICAÇÃO: RAYANE DUARTE GOMES

Uma banca de QUALIFICAÇÃO de DOUTORADO foi cadastrada pelo programa.
STUDENT : RAYANE DUARTE GOMES
DATE: 18/03/2022
TIME: 13:40
LOCAL: GOOGLE MEET
TITLE:

BIODIVERSITY OF THE ENDOPARASITIC COMMUNITIES OF PISCIVOROUS FISH FROM LAGOONS BORDERING THE UPPER AND MIDDLE SÃO FRANCISCO RIVER BASIN, BRAZIL

 

KEY WORDS:

Acanthocephala

Lagoon environment ichthyoparasitology

Nematoda

Pentastomida

Platyhelminthes

PAGES: 77
BIG AREA: Ciências Biológicas
AREA: Parasitologia
SUBÁREA: Helmintologia de Parasitos
SPECIALTY: Helmintologia Animal
SUMMARY:

The São Francisco river basin is one of the old and main sources of fish for the riverside population and Brazilian markets. The piscivorous fish species from marginal lagoons of the upper and middle São Francisco river selected for this study were representatives of the Acestrorhynchidae: Acestrorhynchus lacustris, “peixe-cachorro”, native to the São Francisco and upper Paraná river basins; from Erythrinidae: Hoplias malabaricus, “traíra”, present in Central and South America: from Costa Rica to Argentina occurring in most basins and rivers; and from Characidae: Pygocentrus piraya and Serrasalmus brandtii, “piranha” and “pirambeba”, respectively, endemic fish to the São Francisco basin. The aims of the present study were to record the metazoan endoparasites of the parasitic communities of the selected fish hosts; to relate the component species of each parasitic community; to present and compare the diversity between the parasitic communities, considering the known geographic distribution of each host; and to expand the knowledge of the parasitology of freshwater fish in this important Brazilian watershed. The four carnivorous fish species studied had shared endoparasites in their communities, mainly generalist larvae. The expressive presence of larval endoparasites in the parasitic communities reveals the role played by these top predators, also, as intermediate and/or paratenic hosts, in addition to, as expected, definitive host of the adult helminth species. The dietary differences between the studied hosts reflected in the structure of the endoparasitic communities, showing exclusive species or even the absence of them between “piranhas” and “pirambebas”, indicating the possible greater similarity of the food items or feeding behavior used by them in relation to the other fish hosts. The parasitic results of fish from marginal lagoons illustrate the importance of these environments; they maintain a considerable portion of the biodiversity in the watershed. 

BANKING MEMBERS:
Presidente - 386993 - MARILIA DE CARVALHO BRASIL SATO
Interno - 1971595 - BRUNO PEREIRA BERTO
Externa ao Programa - 3008869 - MICHELLE DANIELE DOS SANTOS CLAPP