Banca de QUALIFICAÇÃO: ANILDO FERREIRA MACHADO

Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.
DISCENTE : ANILDO FERREIRA MACHADO
DATA : 06/08/2021
HORA: 08:00
LOCAL: Remoto
TÍTULO:

Community of dung beetles (Coleoptera: Scarabaeidae: Scarabaeinae) in different agricultural landscapes in the state of Mato Grosso, Central-West Brazil: species persistence in soybean crops

PALAVRAS-CHAVES:

Landscape ecology, Land use change, Environment and production systems

PÁGINAS: 61
GRANDE ÁREA: Outra
ÁREA: Multidisciplinar
RESUMO:

Conflicts between agriculture and conservation of native habitats is a major threat to biodiversity. Agricultural landscapes are increasingly common, however, in these areas the understanding of the processes and mechanisms related to the persistence of biological communities is still poorly understood. Insects in general are diverse, abundant and participate in important ecological processes for the maintenance of the ecosystem and its services to humans. Among them, beetles subfamily Scarabaeinae (Coleoptera: Scarabaeidae), popularly known as dung beetles are considered good habitat quality indicators because, among other things, are sensitive to changes in habitat. The aim of this study was to investigate the impact of the conversion of native habitats into agroecosystems on the dung beetles community in the state of Mato Grosso. For this, we use as a parameter the richness, abundance and species composition. We also tested the hypothesis that the structure and composition of beetles in soybean crops are determined by factors such as: factors such as: type of biome in which the crops were inserted (Amazon, Ecotone and Cerrado), cultivation time (0.5 to 19 years), distance from the nearest pasture (Buffer 5000 m), amount of pasture (Buffer 5000 m) and if the areas were pasture (Yes or No). For the first objective we collected beetles Scarabaeinae at 75 sites in native habitats and in adjacent soybean crops. The beetles were captured by pitfall traps baited with human feces. A total of 71,043 individuals of 165 species were recorded, and 31,953 individuals of 75 species were collected in soybean cultivation and, of these, nine species were exclusive. The conversion of native habitats causes an abrupt decline in the number of species and individuals and alters the composition of dung beetles. The beetles community in soybean crops is influenced by variables associated with pasture: distance (richness), amount (abundance) and presence of pasture in the past (richness, abundance and composition). Furthermore, many of the species recorded in crops are common in natural and exotic pastures in Brazil and have a geographic distribution associated with dry forests (Chaco, Cerrado and Caatinga) in South America, as Trichillum externepunctatum Preudhomme de Borre, 1880, Ontherus appendiculatus (Mannerheim, 1829), Genieridium bidens (Balthasar, 1938) and Dichotomius nisus (Olivier, 1789).

MEMBROS DA BANCA:
Presidente - 80970002 - DIONEI JOSE DA SILVA
Interno - 136121002 - ALESSANDRA REGINA BUTNARIU
Interno - 101366004 - MONICA JOSENE BARBOSA PEREIRA
Externo à Instituição - CÉSAR MURILO DE ALBUQUERQUE CORREA - UFMT