Banca de QUALIFICAÇÃO: KEVIN SANTOS GALVAO

Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.
STUDENT : KEVIN SANTOS GALVAO
DATE: 30/09/2025
TIME: 09:00
LOCAL: https://meet.google.com/rwb-ckym-rnu
TITLE:

Occurrence and distribution of Culicidae (Diptera) associated with bromeliads in natural and urban areas in southern Bahia

KEY WORDS:

atlantic forest; Bromeliaceae; environmental chances; mosquitões; phytotelmata.

PAGES: 53
BIG AREA: Outra
AREA: Ciências Ambientais
SUMMARY:

Mosquitoes of the family Culicidae (Diptera) have ecological and sanitary relevance, acting as vectors of protozoa, helminths, and arboviruses, in addition to serving as bioindicators of environmental quality. However, the fragmentation of the Atlantic Forest and the advance of urbanization have been altering the composition of these communities, favoring opportunistic species of medical importance. Among the environments used by these insects for oviposition, bromeliads (Bromeliaceae) stand out, whose phytotelmata function as microecosystems that sustain high biological diversity. In this context, this dissertation, developed within the research line Natural and Anthropogenic Systems, aimed to understand how environmental changes influence Culicidae fauna in bromeliads of southern Bahia, a strategic region due to its biodiversity and the presence of vector-borne diseases. The general objective was to analyze the occurrence, distribution, and abundance of Culicidae associated with bromeliads, assessing the impact of forest fragmentation and land use, with emphasis on vector species. To this end, seven localities were sampled between 2021 and 2025, including Atlantic Forest fragments within Conservation Units and urban areas of Porto Seguro, Bahia. Sampling covered different species of terrestrial bromeliads, in which morphological and physicochemical parameters of the water stored in their phytotelmata were measured. The collected larvae were reared in the laboratory to adulthood for identification to the lowest possible taxonomic level. Diversity was assessed using rarefaction curves and Hill numbers (q0, q1, and q2), while community composition was analyzed using Non-Metric Multidimensional Scaling (NMDS), PERMANOVA, and Indicator Species Analysis (IndVal). A total of 11 Culicidae taxa were identified, distributed across two subfamilies (Anophelinae and Culicinae) and four tribes (Aedini, Culicini, Sabethini, and Toxorhynchitini), totaling 4,089 individuals. The genus Culex, particularly the subgenus Culex (Microculex), was dominant and present in all areas, followed by Aedes (Ochlerotatus) and Wyeomyia spp. In natural areas, sampling coverage was sufficient to encompass all expected groups according to Shannon and Simpson diversity indices. In contrast, estimated diversity was higher in urban areas, suggesting greater environmental heterogeneity promoted by the presence of ornamental bromeliads. Composition analyses revealed significant differences between localities and between area types (natural and urban), indicating that both landscape-level and microenvironmental factors shape mosquito community structure. The results indicate that Culicidae fauna in bromeliads reflects the interaction between natural and anthropogenic processes. While native species continue to predominate in forested areas, the presence of urban vectors such as Aedes aegypti in ornamental bromeliads highlights potential public health risks. In addition to filling gaps in knowledge about the local fauna, the ongoing inventory supports biodiversity conservation strategies and entomological surveillance actions, emphasizing the importance of integrating ecological and sanitary approaches in the management of natural and urban environments.

COMMITTEE MEMBERS:
Externo à Instituição - JEAN CARLOS SANTOS - UFS
Externo à Instituição - DANIEL ALBENY SIMÕES - UFPA
Externo à Instituição - FABIANO DUARTE CARVALHO - FIOCRUZ-MG
Presidente - 3072593 - FELIPE MICALI NUVOLONI
Externo ao Programa - 1652867 - LUIZ NORBERTO WEBER - null