Banca de DEFESA: JULIANNE MOURA DA SILVA

Uma banca de DEFESA de DOUTORADO foi cadastrada pelo programa.
STUDENT : JULIANNE MOURA DA SILVA
DATE: 27/06/2022
TIME: 14:00
LOCAL: Sala virtual do Google Meet
TITLE:

Ecological relationships, ecophysiological and behavioral aspects of the species Alouatta belzebul (Linnaeus, 1766) in fragments of the Atlantic Forest of Pernambuco.

KEY WORDS:

Feces, howler monkey, latrine, seeds, endoparasites, dung beetles.

PAGES: 126
BIG AREA: Ciências Agrárias
AREA: Medicina Veterinária
SUMMARY:

Neotropical primates of the genus Alouatta are distinguished from others primates by emitting high vocalizations (howl) and a sedentary behaviour due to the frugivorous-folivore diet, which, due to the large amount of leaves consumed, requires a long digestive process. These primates choose specific places to defecate and below these places are seen banks of seeds accumulated in the soil, and dung beetles using the faces as a food and reproductive resource. In relation to endoparasites,  this diversified frugivorous-folivore diet is favorable for howler monkeys, because the plant species may have antiparasitic action. The situation of the Northeastern populations of Alouatta belzebul is critical, due to the intense process of fragmentation of forest areas and hunting. In Pernambuco, the presence of this species is only recorded in one area. The present study was based on the fecal ecology of the Alouatta belzebul species to elucidate aspects of seed dispersal, associations with dung beetles and fecal parasitology of the groups, in order to provide recommendations that will contribute to the conservation of the population in the State. From June 2018 to February 2020 and from December 2020 to September 2021, the defecation sites of groups of red-handed howler monkeys inhabiting two fragments of Mata de Sacramento were monitored monthly for collection of fecal samples. In 13 defecation sites, 349 fecal samples were collected, which contained 8,600 seeds of 33 different morphospecies. Schefflera morototoni and Sloanea obtusifolia represented 67% of the seeds, both associated with recent anthropic impact, as they commonly occur in early successional stages in the Atlantic Forest. Seedlings of Sloanea obtusifolia were found in two defecation sites, indicating that seeds excreted in the faces of red-handed howler monkeys are viable in terms of germination. The parasitological analysis of 250 stool samples using the Mini-FLOTAC technique associated with the Fill-FLOTAC and by direct coproparasitological examination showed positivity for some type of endoparasites in the total of samples (29/250), being found nematodes of the Ascarididae Family (1/ 250), the genera Platynosomum (5/250), Strongyloides (7/250), Ancylostoma (9/250) and the species Trypanoxyuris minutus (12/250), with no significant difference being observed in the parasite profile of the groups. Proving the association of A.belzebul groups with scarab beetles in the two forests, 304 beetles were found in the faces of howler monkeys (n= 545), distributed in 10 taxa, including the genera Canthidium, Onthophagus and the species Eurysternus hirtellus. The pitfall traps collected 878 specimens, distributed in 32 taxa (almost three times that of faces), including one exotic species. Therefore, we can confirm the ecological importance of red-handed howler monkeys for the two fragments studied, as well as we can conclude that despite the distance between the groups, they have a similar diet and prevalence of gastrointestinal parasites. This consolidates the arguments necessary for the creation of corridors and the restoration of environments in the study area, which houses the only population of howler monkeys in the State of Pernambuco.

BANKING MEMBERS:
Presidente - 380.982.884-04 - MARIA ADELIA BORSTELMANN DE OLIVEIRA - UFRPE
Interno - 384005 - LEUCIO CAMARA ALVES
Externo à Instituição - VALDIR LUNA DA SILVA - UFPE
Externa à Instituição - CAROLINA NUNES LIBERAL - UFRPE
Externa à Instituição - BARBARA LINS CALDAS DE MORAES - ICMBio
Externo à Instituição - DILMAR ALBERTO GONÇALVES DE OLIVEIRA