Keena M A, Sánchez V
Northern Research Station, Northeastern Center for Forest Health Research, USDA Forest Service, Hamden, CT.
J Econ Entomol. 2018 Apr 2;111(2):620-628. doi: 10.1093/jee/tox355.
The reproductive behaviors of individual pairs of Anoplophora glabripennis (Motschulsky) (Coleoptera: Cerambycidae)-all combinations of three populations and three different ages-were observed in glass jars in the laboratory on Acer saccharum Marshall (Sapindales: Sapindaceae) host material. The virgin female occasionally made first contact, but mounting did not occur until the male antennated or palpated the female. If the female was receptive (older females initially less receptive than younger ones), the male mated with her immediately after mounting and initiated a prolonged pair-bond. When the female was not receptive, some males abandoned the attempt while most performed a short antennal wagging behavior. During the pair-bond, the male continuously grasped the female's elytral margins with his prothoracic tarsi or both pro- and mesothoracic tarsi. The male copulated in a series of three to four bouts (averaging three to five copulations each) during which the female chewed oviposition sites or walked on the host. Between bouts, the female oviposited and fertile eggs were deposited as soon as 43 min after the first copulation. Females became unreceptive again after copulation and the duration of the pair-bond depended on the male's ability to remain mounted. Some population differences were seen which may be climatic adaptations. A single pair-bond was sufficient for the female to achieve ~60% fertility for her lifetime, but female fecundity declined with age at mating. Under eradication conditions, mates will become more difficult to find and females that find mates will likely produce fewer progeny because they will be older at the time of mating.
在实验室的玻璃罐中，以糖槭（无患子目：无患子科）为寄主材料，观察了光肩星天牛（鞘翅目：天牛科）个体对的繁殖行为——三个种群和三种不同年龄的所有组合。未交配的雌虫偶尔会发起首次接触，但直到雄虫用触角触碰或轻拍雌虫后才会进行爬上雌虫的行为。如果雌虫接受交配（年龄较大的雌虫最初比年轻雌虫接受度低），雄虫爬上雌虫后会立即与之交配，并开始形成持久的配偶关系。当雌虫不接受交配时，一些雄虫会放弃尝试，而大多数会进行短暂的触角摆动行为。在配偶关系中，雄虫用前胸跗节或前胸和中胸跗节持续抓住雌虫的鞘翅边缘。雄虫分三到四轮进行交配（平均每轮三到五次交配），在此期间雌虫会啃咬产卵位点或在寄主上爬行。两轮交配之间，雌虫会产卵，首次交配后43分钟即可产下可育卵。雌虫交配后会再次变得不接受交配，配偶关系的持续时间取决于雄虫保持爬上雌虫的能力。观察到了一些种群差异，这可能是对气候的适应性表现。单一的配偶关系足以使雌虫一生的受精率达到约60%，但雌虫的繁殖力会随着交配时年龄的增长而下降。在根除条件下，配偶会更难找到，找到配偶的雌虫可能会产生更少的后代，因为它们交配时年龄更大。
