Banca de DEFESA: MÁRCIO MORAIS SILVA

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
DISCENTE : MÁRCIO MORAIS SILVA
DATA : 18/12/2019
HORA: 10:00
LOCAL: ICBS
TÍTULO:

ANALYSIS OF THE DIET OF TAMANDUA TETRADACTYLA LINNAEUS, 1758 (PILOSA: MYRMECOPHAGIDAE) FROM RIO DE JANEIRO AND MINAS GERAIS, BRAZIL

PALAVRAS-CHAVES:

Mirmecology, Nasutitermes, roadkilled animals

PÁGINAS: 50
GRANDE ÁREA: Ciências Biológicas
ÁREA: Zoologia
SUBÁREA: Zoologia Aplicada
RESUMO:

The collared anteater, Tamandua tetradactyla Linnaeus, 1758 (Pilosa:
Myrmecophagidae), is a small mammal predator of ants and termites. Using its nose to
locate and its claws to break the structure of the colonies, this animal is able to capture
its prey with the tongue. Despite of the knowledge about its diet, there are few studies
describing which species are actually consumed by these mammals. The aim of this
study was to investigate the diversity and abundance of insect species in the collared
anteater diet and verify if there is any pattern. To evaluate that, eight samples of
stomach contents of T. tetradactyla, roadkilled on the BR-040 highway between the
cities of Duque de Caxias (RJ) and Simão Pereira (MG), were collected from 2009 to
2014 and analyzed. Stomach contents were removed and preserved in 70% ethanol until
analyzed under a stereomicroscope and identified at the lowest taxonomic level
possible. A total of 22,832 specimens were obtained, distributed in 54 insect taxa of
three orders: Blattodea (Isoptera), Coleoptera, and Hymenoptera. The most abundant
taxa was Isoptera, represented mainly by the genus Nasutitermes Dudley, 1890 with
12,352 specimens found. To compare the similarity in species composition among the
eight samples, we used the Jaccard’s test, which showed low similarity between them,
suggesting that these collared anteaters eat without any apparent pattern, but according
to their individual preferences. However, three species were common among the
samples: Camponotus atriceps (Smith, 1858), C. rufipes (Fabricius, 1775) and
Cephalotes pusillus (Klug, 1824). Such species are very common in areas of the
Atlantic Forest disturbed by human activities, such as cities and roads. Total
precipitation in the month of collection was positively correlated with the richness of
insect species, suggesting that this factor influences the richness of food sources
available for the mammals.

MEMBROS DA BANCA:
Externo à Instituição - BRUNO CLARKSON MATTOS
Externo à Instituição - CECÍLIA BUENO MOACYR DE LIMA E SILVA - UVA
Interno - 106.487.357-02 - FELIPE FERRAZ FIGUEIREDO MOREIRA - UFRJ
Externo à Instituição - FERNANDA AVELINO CAPISTRANO DA SILVA
Externo à Instituição - JULIANA MOURÃO DOS SANTOS RODRIGUES