Bertram D S
Trans R Soc Trop Med Hyg. 1983;77(4):503-9. doi: 10.1016/0035-9203(83)90124-4.
Oriental parasitoid wasps, Gryon triatomae, were confined for several weeks in transparent tanks (400 X 180 X 200 mm) with eggs of the neotropical triatomine bug Triatoma maculata. The eggs were lodged in moulded holes (about 50 mm deep and 15 mm diameter) of polystyrene blocks, to simulate walls. The blocks were arranged with the holes either vertical or horizontal; openings of the holes were either 5 mm or 15 mm diameter. One wall included three mazes of linked holes, each maze with one entrance. Eggs were also accessible in an open petri-dish and on top of one wall. Some eggs in the walls and the maze block were in holes sealed off from access by wasps to provide controls, in order to assess fertility of the eggs, since this favours parasitization. This was satisfactory at 82.2% and 88.5% in two tanks studied. Parasitization rates were 32% of 50 eggs exposed to one female G. triatomae, with one male wasp, in one tank, and in the other 55.9% of 136 eggs exposed to 14 female wasps, with five males. In both tanks, eggs in the open petri-dish, in accessible vertical and horizontal holes and on top of walls were parasitized, but parasitization of eggs in the mazes occurred only in the tank with 14 female Gryon and then as far as the last, 18th, hole of the longest maze, a linear penetration by a searching wasp of about 270 mm; the distance travelled could be considerably greater. Late wasp oviposition after protracted questing may have caused the observed 15.8% abortion rate of G. triatomae. The few wasps seen by night were at rest, but at daybreak many more emerged from the walls and flew actively.(ABSTRACT TRUNCATED AT 250 WORDS)
东方寄生蜂，即三带格姬小蜂，被置于透明水箱（400×180×200毫米）中数周，水箱中放置了新热带地区锥蝽Triatoma maculata的卵。这些卵被放置在聚苯乙烯块的模制孔（约50毫米深，15毫米直径）中，以模拟墙壁。这些块体的孔垂直或水平排列；孔的开口直径为5毫米或15毫米。其中一面墙包括三个由相连孔组成的迷宫，每个迷宫有一个入口。培养皿开放放置以及在一面墙的顶部也有卵可供接触。为了评估卵的可育性，因为这有利于寄生，墙壁和迷宫块体中的一些卵被放置在黄蜂无法接触到的密封孔中作为对照。在所研究的两个水箱中，这一比例分别为82.2%和88.5%，令人满意。在一个水箱中，50枚暴露于一只雌性三带格姬小蜂和一只雄性黄蜂的卵的寄生率为32%；在另一个水箱中，136枚暴露于14只雌性黄蜂和5只雄性黄蜂的卵的寄生率为55.9%。在两个水箱中，培养皿开放放置的卵、可接触到的垂直和水平孔中的卵以及墙壁顶部的卵都被寄生，但迷宫中的卵仅在有14只雌性格姬小蜂的水箱中被寄生，而且仅到最长迷宫的最后第18个孔，一只搜索黄蜂的线性穿透距离约为270毫米；实际行进距离可能远不止于此。长时间搜寻后黄蜂的晚期产卵可能导致了观察到的三带格姬小蜂15.8%的流产率。夜间看到的少数黄蜂处于静止状态，但黎明时分，更多黄蜂从墙壁中飞出并活跃地飞行。（摘要截选至250字）
