Gómez Maylen, Paranhos Beatriz A J, Silva Janisete G, De Lima Maria A C, Silva Márcio A, Macedo Aline T, Virginio Jair F, Walder Julio M M
Biofábrica Moscamed Brasil, Quadra D-13, Distrito Industrial do São Francisco, CEP, Juazeiro, Bahia, Brazil.
Centro de Energia Nuclear na Agricultura, Universidade de São Paulo, CEP, Piracicaba, São Paulo, Brazil.
J Insect Sci. 2019 Jan 1;19(1):16. doi: 10.1093/jisesa/iey136.
Studies investigating oviposition preference of Ceratitis capitata (Wiedemann, 1824) in table grapes (Vitis vinifera L.) cultivated in the São Francisco River Valley can provide important information to guide control measures, therefore minimizing damage caused by this species in the region. The aim of this study was to evaluate the oviposition preference of C. capitata females for berries cv. 'Italia' collected at five different times (60, 70, 80, 90, and 100 d after production pruning [DAPP]), representing five grapevine growth stages. We also assessed the performance of immature stages of C. capitata regarding the physiological development of the berry. The total soluble solid content was significantly higher in berries at more advanced physiological developmental stages (90 and 100 DAPP). Conversely, these berries showed the lowest values of firmness and titratable acidity. With the onset of physiological development, the average number of punctures per berry increased and reached 5.2 per berry in 100 DAPP berries. The infestation level and pupal weight showed a positive correlation with the growth stage. The highest recovery of pupae was observed in 100 DAPP berries (1.54). Pupal viability values ranged from 50.9 to 64.7% independent of berry maturity stage. The physiological developmental stage of the berry did not affect offspring sex ratio. Results obtained suggest that regardless of the female preference for laying eggs on berries in a more advanced physiological developmental stage, females can initiate the attack to bunches of this cultivar at 60 DAPP, even if the berries have unfavorable physicochemical parameters for oviposition and development of larvae.
对在圣弗朗西斯科河谷种植的鲜食葡萄（欧亚种葡萄）上的地中海实蝇（维德曼，1824年）产卵偏好进行研究，可为指导防治措施提供重要信息，从而最大限度减少该物种在该地区造成的损害。本研究的目的是评估地中海实蝇雌虫对五个不同时期（生产修剪后60、70、80、90和100天 [DAPP]）采集的‘意大利’品种浆果的产卵偏好，这五个时期代表了五个葡萄生长阶段。我们还评估了地中海实蝇未成熟阶段在浆果生理发育方面的表现。在生理发育更成熟阶段（90和100 DAPP）的浆果中，总可溶性固形物含量显著更高。相反，这些浆果的硬度和可滴定酸度值最低。随着生理发育开始，每个浆果的平均穿刺次数增加，在100 DAPP的浆果中达到每个浆果5.2次。侵染水平和蛹重与生长阶段呈正相关。在100 DAPP的浆果中观察到最高的蛹回收率（1.54）。蛹的活力值在50.9%至64.7%之间，与浆果成熟阶段无关。浆果的生理发育阶段不影响后代性别比例。所得结果表明，尽管雌虫更倾向于在生理发育更成熟阶段的浆果上产卵，但即使浆果的理化参数不利于产卵和幼虫发育，雌虫在60 DAPP时也可开始对该品种的果穗发起攻击。
