Thanatosis, also called death feigning, is often an antipredator behavior. In insects, it has been reported from species of various orders, but knowledge of this behavior in Hymenoptera is insufficient. This study examined the effects of sex, age (0 or 2 days old), temperature (18 or 25 °C), and background color (white, green, or brown) on thanatosis in the braconid parasitoid wasp Heterospilus prosopidis. Thanatosis was more frequent in 0-d-old individuals and in females at 18 °C. The duration of thanatosis was longer in females, but this effect of sex was weaker at 18 °C and in 0-d-old individuals. The background color affected neither the frequency nor duration. These results were compared with reports for other insects and predictions based on the life history of this species, and are discussed from an ecological perspective.

中文翻译：

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影响拟南芥类拟寄生蜂黄蜂变态的因素

变性，也称为死亡假装，通常是一种反掠食者的行为。在昆虫中，已经报道了各种昆虫的物种，但是对膜翅目中这种行为的了解不足。这项研究检查了性别，年龄（0或2天大），温度（18或25°C）和背景色（白色，绿色或棕色）对拟南芥Brasid类寄生蜂黄蜂成虫的影响。。在0°D的人群和18°C的女性中，变性病更为常见。女性的成虫持续时间更长，但在18°C和0岁以下的个体中，性别的影响较弱。背景色既不影响频率也不影响持续时间。将这些结果与其他昆虫的报告进行了比较，并根据该物种的生活史对其进行了预测，并从生态学角度对其进行了讨论。