Banca de DEFESA: DIEGO JORGE DA SILVA

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
DISCENTE : DIEGO JORGE DA SILVA
DATA : 27/07/2021
HORA: 14:00
LOCAL: Via Plataforma GoogleMeet
TÍTULO:

Aspectos bioecológicos de Billaea rhynchophorae (Blanchard, 1937) (Diptera: Tachinidae), visando o estabelecimento de um método de criação em laboratório

PALAVRAS-CHAVES:

Broca-do-olho-do-coqueiro; Dieta; Manejo; Parasitismo; Taquinídeo.

PÁGINAS: 50
RESUMO:

Coconut (Cocos nucifera L.) is a crop of great economic importance due to the consumption of fruits and derivatives, but it is currently being attacked by several pests, mainly by Rhynchophorus palmarum L., 1764 (Coleoptera: Curculionidae), which causes direct and indirect damage. One form of control is the use of traps with the species' pheromone, contributing to the decline of the population in the field. New studies with parasitoid insects of the genus Billaea (Robineau-Desvoidy, 1830) (Diptera: Tachinidae) may contribute to the control of R. palmarum and other beetles. The objective of this work was to evaluate different food sources on the survival and parasitism of B. rhynchophorae in R. palmarum larvae. The collections of larvae and pupae of the parasitoid and flowering plants were carried out in oil palm plantations in the municipalities of Jaguaripe and Taperoá, both located in the state of Bahia, and sent to the laboratory. To assess the longevity of B. rhynchophorae, two trials were carried out: in the first, I) sugarcane stalks; II) chamomile Matricaria chamomilla L. (Asteraceae) flowers; III) palm Adonidia merrillii Becc. (Arecaceae) flowers and in the second, I) 20% honey; II) 33% sucrose solution; III) 3g of bee pollen. As for the natural parasitism, flies aged between 24 and 48 hours were used, to which larvae of R. palmarum were offered, and the viability of planidia was also evaluated through the following ages of the flies 8, 10, 12 and 14 days old. The experiment of the influence of food sources was carried out in a completely randomized design. In all experiments, the means obtained in the different treatments were submitted to analysis of variance and, when necessary, compared to each other by Tukey's test at 5% significance, using the statistical program SASM-Agri. All plants collected in oil palms were identified, among them Ageratum conyzoides and A. uliginosa are two species belonging to the Asteraceae family, the same family as chamomile, M. chamomilla, the species used in this work as a food source for the parasitoids. However, in the first trial it was found that sugarcane differed statistically from palm flower and chamomile flower. In the second experiment, it could be verified that pollen and 20% honey differed from 33% sucrose. In the evaluation of natural parasitism, none of the treatments (palm flower, chamomile flower and sugarcane) provided sexual maturation of the flies, and planidia viability in the different days of age of the parasitoid. Therefore, the food sources sugarcane, 20% honey and bee pollen favored a greater mean longevity of B. rhynchophorae, however, sugarcane, palm flower and chamomile flower did not contribute to sexual maturation, as well as the viability of planidia in the different days of evaluation.

MEMBROS DA BANCA:
Presidente - 024.985.859-23 - ELIO CESAR GUZZO - USP
Interno - 3007246 - MAURICIO SILVA DE LIMA
Externo à Instituição - ALDOMARIO SANTO NEGRISOLI JUNIOR