Gonçalves R S, Nava D E, Andreazza F, Lisbôa H, Nunes A M, Grützmacher A D, Valgas R A, Maia A H N, Pazianotto R A A
Departamento de Fitossanidade, Universidade Federal de Pelotas, Faculdade de Agronomia Eliseu Maciel, 96010-900, Pelotas, Rio Grande do Sul, Brazil.
Environ Entomol. 2014 Apr;43(2):491-500. doi: 10.1603/EN13072. Epub 2014 Mar 10.
Aganaspis pelleranoi (Brèthes, 1924) (Hymenoptera: Figitidae) is a koinobiont endoparasitoid of larvae of species of the genus Anastrepha and of Ceratitis capitata. It is a candidate for use as a biological control agent, as under field conditions, it may reach a parasitism rate of 62%. The objective of this study was to determine the effect of different constant temperatures on biological parameters of A. pelleranoi when parasitizing the larva of Anastrepha fraterculus (Wiedemann, 1830) (Diptera: Tephritidae), as well as to determine its thermal requirements. The study was conducted in environmental chambers at 18, 20, 22, 25, 28, and 30 ± 1°C; 70 ± 10% relative humidity; and a 12-h photophase. Females maintained at 18 and 20°C produced more progeny than females at other temperatures tested. The longevity of males and females was inversely proportional to temperature, ranging from 49.1 to 3.73 d for females and from 32.1 to 3.8 d for males at temperatures of 18-30°C, respectively. The duration of the biological cycle (egg-to-adult) was influenced by temperature, and ranged from 69.1 d at 18°C to 30 d at 25°C. No preimaginal development of A. pelleranoi occurred at 28 and 30°C. The relationship between temperature and the demographic parameters of A. pelleranoi showed a linear effect over the temperature range of 18-25°C. The lower temperature threshold and thermal constant were 11.69°C and 391.70 degree days, respectively.
佩氏阿加纳斯茧蜂（Aganaspis pelleranoi）（布雷特斯，1924年）（膜翅目：长尾小蜂科）是实蝇属幼虫和地中海实蝇（Ceratitis capitata）的一种共寄生内寄生蜂。它是一种有望用作生物防治剂的昆虫，因为在田间条件下，其寄生率可达62%。本研究的目的是确定不同恒温对佩氏阿加纳斯茧蜂寄生巴西实蝇（Anastrepha fraterculus）（维德曼，1830年）（双翅目：实蝇科）幼虫时生物学参数的影响，并确定其热需求。该研究在温度为18、20、22、25、28和30±1°C、相对湿度为70±10%、光周期为12小时的环境试验箱中进行。在18和20°C下饲养的雌蜂比在其他测试温度下的雌蜂产生更多后代。雄蜂和雌蜂的寿命与温度成反比，在18 - 30°C的温度下，雌蜂的寿命从49.1天到3.73天不等，雄蜂的寿命从32.1天到3.8天不等。生物周期（卵到成虫）的持续时间受温度影响，在18°C时为69.1天，在25°C时为30天。在28和30°C时，佩氏阿加纳斯茧蜂没有进行成虫前发育。在18 - 25°C的温度范围内，温度与佩氏阿加纳斯茧蜂的种群统计学参数之间的关系呈现线性效应。较低温度阈值和热常数分别为11.69°C和391.70度日。
