Banca de DEFESA: NILTON HENRIQUE FONSECA DO NASCIMENTO

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : NILTON HENRIQUE FONSECA DO NASCIMENTO
DATE: 25/07/2024
TIME: 10:00
LOCAL: on-line
TITLE:

Assessment of the variation in faunistic parameters of mosquitoes (Culicidae: Diptera) across different forest gradients in the Tijuca National Park Area, Rio de Janeiro, Brazil

KEY WORDS:

Culicids, diversity; edge effect; conservation unit

PAGES: 79
BIG AREA: Ciências Biológicas
AREA: Zoologia
SUBÁREA: Zoologia Aplicada
SUMMARY:

The evaluation of mosquito diversity in Atlantic Forest remnants, considered
biodiversity hotspots, is of fundamental importance for observing patterns of behavior,
adaptation, environmental monitoring, and public health. These studies provide valuable
insights into the ecology and biology of these insects, contributing to a better understanding
of forest ecosystems and the interactions among the species that inhabit them. The present
study aimed to assess the variation in faunistic parameters of mosquitoes, including
abundance, richness, diversity, and evenness along an environmental gradient. This gradient
extends from the edge toward the interior of the fragment. The study tested the hypothesis
that edge effects influence the distribution of mosquito species in the Tijuca National Park.
Sampling was carried out from May 2022 to December 2023, occurring monthly over two
consecutive days within the park area. Three different sampling points within the
conservation unit were selected: sampling point 1: forest edge; sampling point 2: 35 meters
from the edge; sampling point 3: 500 meters from the edge, representing different distance
gradients. Mosquitoes were captured using CDC light traps with CO 2 , Shannon traps, and
human bait protected attraction; the combination of these traps provided a representative
sampling of the diversity of adult mosquitoes present in the study area. Active search for
immatures was performed in natural larval habitats using pipettes and entomological scoops.
During the sampling period, a total of 1004 specimens were collected, comprising 320
immatures and 684 adults, representing 27 species. Statistical analyses showed that
abundance and richness along the established gradient were not uniform among sampling
points. The Kruskal-Wallis test identified two distinct sampling points: the forest edge (point
1) and the location 35 meters from the edge (point 2). The sampling point at the forest edge
exhibited the highest levels of species richness, diversity, and evenness. However, given the
brief duration of this study, it is crucial to expand the sampling efforts by increasing both the
number and frequency of traps and collections. Such enhancements are essential to achieve a
more thorough understanding of the ecological patterns and processes at play.

COMMITTEE MEMBERS:
Externa à Instituição - ANA JULIA DOS SANTOS SILVA - FIOCRUZ
Externa à Instituição - CECÍLIA FERREIRA DE MELLO - FIOCRUZ
Externo à Instituição - ILDEMAR FERREIRA - UFRRJ
Interno - ***.893.247-** - JERONIMO AUGUSTO FONSECA ALENCAR - FIOCRUZ
Externa à Instituição - SHAYENNE OLSSON FREITAS SILVA - FIOCRUZ