Banca de DEFESA: RENATA PEREIRA DE LIMA

Uma banca de DEFESA de DOUTORADO foi cadastrada pelo programa.
STUDENT : RENATA PEREIRA DE LIMA
DATE: 25/02/2022
TIME: 09:00
LOCAL: CECA/UFAL (Defesa online através da plataforma Google Meet)
TITLE:

LIFE STORY OF Tetranychus bastosi TUTTLE, BAKER & SALES, 1977 (ACARI: TETRANYCHIDAE) IN ALAGOAS STATE

KEY WORDS:

Red spider mite, biological parameters, populational growth, fertility life table.

PAGES: 66
BIG AREA: Ciências Agrárias
AREA: Agronomia
SUBÁREA: Fitossanidade
SPECIALTY: Entomologia Agrícola
SUMMARY:

Tetranychus bastosi (Tuttle, Baker & Sales), 1977 (Acari: Tetranychidae) was described in the state of Ceará and until now the occurrence of this species is restricted to Brazil. It is a phytophagous mite registered in more than 36 plant hosts, including species of agricultural importance. Thus, the objectives of this study were to report the first record of the occurrence of T. bastosi in the state of Alagoas, in addition to evaluating the life history of T. bastosi in different hosts. In Alagoas, T. bastosi was reported for the first time, infesting plants of Turnera subulata L. and Ipomoea batatas L., causing significant damage. The population growth of T. bastosi showed positive values of 0.35 ± 0.02 and 0.21 ± 0.09 for I. batatas and T. subulata, respectively, with significant differences between them. To the study of the life history of T. bastosi, the parameters duration and survival of immature stages, longevity and fecundity were evaluated. From the results, fertility life tables were prepared for three plant species: Morus rubra L. considered the first host for this mite in Brazil; I. batatas, first reported host in the state of Alagoas; and Psidium guajava L. a host reported for the Northeast of Brazil. Instantaneous rates of growth (ri), food preference and oviposition were also evaluated for T. bastosi. The incubation period of T. bastosi eggs was longer on M. rubra (5.9 days) followed by I. batatas (4.0 days) and P. guajava (4.0 days). The longest larval period was observed on P. guajava (5.7 days). The longest durations of the protonymph and deutonymph stages were observed in P guajava (3 days) and M. rubra (2.3 days), respectively. The longest period from egg to adult of T. bastosi was observed on I. batatas (30 days). The highest longevity of T. bastosi was observed on the hosts I. batatas and M. rubra (39.8 and 30.2 days, respectively). The mite T. bastosi showed the highest net rate (Ro) and longest mean duration of a generation (T) on M. rubra (13.0 and 21.3 days), but the highest innate capacity for population increase (rm) and finite rate of increase (λ) were observed on I. batatas (0.15 and 1.16). The host preference tests indicated that there was a preference of T. bastosi for P. guajava in all of the analyzed periods and bioassays, however, no preference was observed for oviposition among the hosts. The instantaneous rate of growth (ri) of T. bastosi showed positive values of 0.3509 ± 0.01 and 0.275 ± 0.012 for I. batatas and M. rubra, respectively, however a negative rate of -0,082± 0,02 was observed for the host P. guajava.

BANKING MEMBERS:
Presidente - 1389433 - MARIANA OLIVEIRA BREDA
Interno - 024.985.859-23 - ELIO CESAR GUZZO - USP
Interno - 3007246 - MAURICIO SILVA DE LIMA
Externa ao Programa - 3228367 - ALICE MARIA NASCIMENTO DE ARAUJO
Externa à Instituição - JAKELINE MARIA DOS SANTOS
Externo à Instituição - JOSE VARGAS DE OLIVEIRA