Banca de DEFESA: WELLINGTON THADEU DE ALCANTARA AZEVEDO

Uma banca de DEFESA de DOUTORADO foi cadastrada pelo programa.
STUDENT : WELLINGTON THADEU DE ALCANTARA AZEVEDO
DATE: 19/12/2023
TIME: 09:30
LOCAL: on-line
TITLE:

Study of the Dipterofauna (Calliphoridae and Mesembrinellidae) in forest, rural and urban areas of the State of Rio de Janeiro

KEY WORDS:

Bioindicators, Environmental gradient, Edge effect

PAGES: 78
BIG AREA: Ciências Biológicas
AREA: Zoologia
SUBÁREA: Zoologia Aplicada
SUMMARY:

The Atlantic Forest is a diverse biome, including more than 15,000 species of endemic
vascular plants. It is under constant pressure due to human action, resulting in the
fragmentation of its habitat, intensifying the edge effect. The objective of this study was to
study the fauna of Calliphoridae and Mesembrinellidae in three environments, forest, rural
and urban, in the state of Rio de Janeiro; study the edge effect in the forest environment,
evaluate the attractiveness of these diptera by two stages of bait decomposition; and identify
bioindicators for each environment. Two traps were installed at each sampling point
containing preserved beef liver bait. The edge effect was evaluated at five sampling points
along 800 meters from the edge towards the interior of the forest in the Parque Estadual dos
Três Picos, with the vegetal characterization of each point. To study bait attractiveness at
different stages of decomposition and synanthropy, two traps containing bovine liver bait with
48 hours of decomposition were added, considering only the innermost point of the forest
environmen, and two additional collection points were studied: rural environment, Seropédica
campus (UFRRJ); urban environment, Urca campus (UNIRIO). Samples were collected
quarterly, between June 2021 and May 2023. The specimens were sacrificed using a lethal
solution, transferred to the laboratory and identified. A total of 5,476 dipterans were collected,
of which five were Calliphoridae (77.1%) and 11 were Mesembrinellidae (22.9%). Seven
species occurred commonly, one rarely, five constant, and seven accidentals. Huascaromusca
aneiventris and Paralucilia nigrofacialis showed a preference for environments with higher
canopy coverage. Eumesembrinella cyaneicyncta and Hemilucilia benoisti were related to the
points at 0 and 200 meters. Laneella nigripes was more abundant in the innermost points.
Mesembrinella bellardiana was more abundant at the intermediate points. Hemilucilia
segmentaria and L. eximia were abundant along the gradient. Mesembrinella semihyalina was
negatively correlated with CAP and plant density. Hemilucilia benoisti was negatively
correlated with canopy covering. Species of the genus Hemilucilia, Lucilia eximia, P.
nigrofacialis, M. bellardiana and M. peregrina were correlated with precipitation, temperature
and/or relative humidity. The diversity profile of Rényi varied throughout the collection
period, with higher richness and diversity in winter and lower in autumn. La. nigripes showed
a preference for liver baits with 48 hours of putrefaction. The species of Mesembrinellidae
occurred exclusively in the forest environment, in addition to H. benoisti and P. nigrofacialis,
being asynanthropes. Hemilucilia segmentaria and H. semidiaphana were also asynanthropes,
but occurred in urban and/or rural environments. The genera Chrysomya and Cochliomyia,
and Lucilia cuprina, were synanthropes. Eight potentially bioindicator species were identified
for the forest environment, especially La. nigripes, M. bellardiana and L. eximia, and four for
rural environments, especially Cochliomyia macellaria. This is an unprecedented study in
PETP. It is valuable information about the ecology and distribution of Calliphoridae and
Mesembrinellidae in different environments, being reported the first occurrence of M. currani
in this biome, as well as these families’ potential as environmental indicators and its behavior
in relation to the decomposition stage of the bait. These findings may contribute to
conservation studies and environmental monitoring in the studied region.

COMMITTEE MEMBERS:
Externa à Instituição - BARBARA PROENCA DO NASCIMENTO - UERJ
Externa à Instituição - CLAUDIA SOARES SANTOS LESSA - UNIRIO
Interno - 387289 - ILDEMAR FERREIRA
Interno - ***.893.247-** - JERONIMO AUGUSTO FONSECA ALENCAR - FIOCRUZ
Externa à Instituição - VALÉRIA CID MAIA - UFRJ