Banca de DEFESA: RAFAEL JORDÃO PIRES SILVA

Uma banca de DEFESA de DOUTORADO foi cadastrada pelo programa.
STUDENT : RAFAEL JORDÃO PIRES SILVA
DATE: 05/08/2024
TIME: 14:00
LOCAL: on-line
TITLE:

Diversity and distribution of aquatic True Bugs (HEMIPTERA: HETEROPTERA: NEPOMORPHA) in the CAATINGA
Biome

KEY WORDS:

Aquatic insects, semiarid, species distribution modeling

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

The Brazilian biodiversity, especially the insects, represents a significant challenge for science, given the gap between the known species and the estimates of species richness. This gap is more pronounced in aquatic insects, which are crucial for understanding anthropogenic impacts, habitat stability, and ensuring the quality of water resources. Among the Brazilian biomes, one of the least known and sampled is the Caatinga. It has a strictly national distribution, present in nine states in the Northeast Region and partially in Minas Gerais. Nevertheless, it is undersampled, possibly due to the perception that this semiarid region would not house great biodiversity, a hypothesis refuted by the high degree of endemism of fish and amphibians in this domain. A more in-depth knowledge of its biodiversity would fill distribution gaps, assisting biogeographical and conservation studies. In the country, there is a significant projection of insect taxa yet to be discovered, with many of them possibly becoming extinct even before being described. The order Hemiptera is among the most diverse in the national territory, with approximately 30 thousand registered species. Faced with the challenges posed by the accelerated extinction in the Anthropocene, new approaches are necessary to establish protected areas for these species. Among them, potential distribution modeling can assist in proposing regions for more effective and comprehensive protected areas, based on species records and environmental variables, a technique aligned with the magnitude of the Brazilian biodiversity. In this work, three new species of the infraorder Nepomorpha (Hemiptera: Heteroptera) were described, belonging to the genera Tenagobia (Micronectidae), Australambrysus (Naucoridae), and Ochterus (Ochteridae). Additionally, unprecedented distribution records for the infraorder were made in the states of Alagoas (28), Bahia (14), Ceará (14), Pernambuco (11), Piauí (7), and Sergipe (23). Furthermore, a key to the species of Notonectidae from northeastern Brazil is presented, and potential distribution models were generated for Belostoma anurum, Be. dallasi, Be. foveolatum, Be. micantulum, Be. plebejum, Buenoa amnigenus, Bu. fuscipennis, Bu. konta, Bu. mutabilis, Bu. platycnemis, Bu. salutis, Bu. tarsalis, Bu. unguis, Centrocorisa kollari, Gelastocoris flavus flavus, Heterocorixa wrighti, Lethocerus annulipes, Limnocoris pusillus, Martarega bentoi, Mar. brasiliensis, Mar. membranacea, Maculambrysus stali, and Notonecta disturbata. Additionally, critical areas for the conservation of these organisms in the Caatinga Biome were identified, based on their conservation importance calculated by the Zonation software and analyses of Kernel Density and relative richness. The mesoregions of Northern Ceará, Metropolitan Region of Fortaleza, Sertão Cearense, and Northeastern Bahia were highlighted as of significant potential richness for the infraorder.

COMMITTEE MEMBERS:
Externa à Instituição - KARINA DIAS DA SILVA - UFPA
Externo à Instituição - ERLANE JOSÉ RODRIGUES DA CUNHA - UFPA
Interno - ***.487.357-** - FELIPE FERRAZ FIGUEIREDO MOREIRA - UFRJ
Externa à Instituição - FERNANDA AVELINO CAPISTRANO DA SILVA - UniSãoJosé
Externa à Instituição - ISABELLE DA ROCHA SILVA CORDEIRO - FIOCRUZ