Banca de DEFESA: RAFAEL KILL SILVEIRA

Uma banca de DEFESA de DOUTORADO foi cadastrada pelo programa.
DISCENTE : RAFAEL KILL SILVEIRA
DATA : 30/05/2023
HORA: 14:00
LOCAL: Remoto
TÍTULO:

Bee community (Hymenoptera: Apoidea) from Mato Grosso, Brazil - Diversity, use, management and conservation

PALAVRAS-CHAVES:

agroecosystems, ecosystem services, pollination, pollinators, thermoregulation

PÁGINAS: 119
GRANDE ÁREA: Ciências Biológicas
ÁREA: Ecologia
SUBÁREA: Ecologia de Ecossistemas
RESUMO:

Bees are the main biotic pollinators of natural and artificial environments. The diversity of Brazilian native bees neglected as possible pollinators of agricultural crops is 88.4%. The processes of replacement of landscapes for urbanization and agricultural activities have promoted the reduction of resources necessary for the survival of bees, mainly the reduction of food sources and places for nesting. Agricultural systems in Brazil are monocultural, and these require the use of pesticides, which can cause a reduction in bee populations. Global climate change also affects the living conditions of bees. Among them, the effect of global warming can be highlighted, which has raised the temperature in some regions of Brazil to conditions above thermal comfort, and as an aggravating factor, some pesticides are associated with changes in the thermoregulation capacity of bees. Measures must be taken to reduce deforestation associated with environmental recovery, as well as the adoption of agricultural practices and an urban way of life that minimize environmental damage. In chapter 1, entitled “Bees and Agrochemicals: A risk scenario”, it evaluates the sales volume of pesticides in Brazil, the evolution of the commercialized quantity, as well as the release of new products over the years. Subsequently, based on this set of information, and through a bibliographic review, we sought to understand the dynamics of using these products and verify which of them are harmful to bees and/or which may be related to the reduction of these communities. In chapter 2, entitled “What is known about the bee fauna in Mato Grosso? The state with the largest agricultural production in Brazil”, we carried out a systematic bibliographical review of scientific articles published from 1945 to July 2020, dealing with the topic of current knowledge about the diversity of bees in the state of Mato Grosso. In chapter 3, entitled “Afforestation and populous swarms ensure thermoregulation inside the Apis mellifera nest”, the objective was to identify the ideal place inside the hive to measure the temperature, and to assess whether the internal temperature of the hive is affected by the size of the bee population, and also verify if in the southwest region of the State of Mato Grosso the management of keeping the hives under a wooded environment in the summer or in full sun in the winter guarantees the thermal homeostasis. In chapter 4, entitled “Pollinators visit the sunflower throughout flowering, increasing productivity and making the seeds uniform”, the objective was to verify the effect of biotic pollination in the culture of the sunflower cultivar SYN 039A, associated or not with organic fertilization and, furthermore, , determine in which flowering period and at what time of day there is a greater abundance of floral visitors.

 

MEMBROS DA BANCA:
Presidente - 80970002 - DIONEI JOSE DA SILVA
Interno - 118188001 - ERNANDES SOBREIRA OLIVEIRA JUNIOR
Interno - 48690002 - SOLANGE KIMIE IKEDA CASTRILLON
Externo ao Programa - 279342101 - DANIELLE STORCK TONON
Externo à Instituição - RODRIGO ARANDA - UFR