Grosch D S, Kratsas R G, Petters R M
J Embryol Exp Morphol. 1977 Aug;40:245-51.
Variation from zero to five ovarioles in the braconid wasp, Habrobracon juglandis, is reported for dissections of females from laboratory stocks. Four ovarioles (two per ovary) is the standard phenotype for the species. Storage of fourth-instar larvar in a refrigerator resulted in a large proportion of females with an increased number of ovarioles (5-11). A 1- to 2-week cold exposure during the period of ovarian differentiation is required for the maximum effect.
据报道，对实验室种群的雌性胡桃瘤姬蜂进行解剖时发现，其卵巢小管数量从零到五个不等。该物种的标准表型是四个卵巢小管（每个卵巢两个）。将四龄幼虫储存在冰箱中会导致很大一部分雌性的卵巢小管数量增加（5 - 11个）。在卵巢分化期间进行1至2周的冷暴露才能产生最大效果。
