Department of Zoology, Tel Aviv University, Ramat Aviv, Tel Aviv 69978, Israel.
Arthropod Struct Dev. 2013 Jul;42(4):309-14. doi: 10.1016/j.asd.2013.03.003. Epub 2013 Mar 19.
The development from egg to pupation is followed for the wasp Eretmocerus mundus, parasitizing the whitefly Bemisia tabaci. We elucidate and describe structural details, histological developments and changes that the different parasitoid and host tissues have undergone during parasitism. These include the presence and apparent function of very large salivary glands, which probably produce substances that help to regulate the host's decomposition and parasitoid nutrition. Moreover, the gut of all instars is devoid of both peritrophic membrane and microvilli and, in the early instars, it has squamous rather than columnar epithelial cells. Differing from many other parasitoids, the E. mundus larva usually does not come into contact with the host tissues and does not devour the entire host during its development. The possible reasons for the developmental mechanisms, as well as the functions of the host capsule that envelopes the parasitoid, are discussed.
我们对寄生粉虱的缨小蜂 Eretmocerus mundus 从卵到化蛹的发育过程进行了研究。我们阐明并描述了不同寄生蜂和宿主组织在寄生过程中经历的结构细节、组织学发展和变化。其中包括非常大的唾液腺的存在和明显功能，这些唾液腺可能产生有助于调节宿主分解和寄生蜂营养的物质。此外，所有龄期的肠道都没有围食膜和微绒毛，并且在早期龄期，它具有鳞片状而不是柱状的上皮细胞。与许多其他寄生蜂不同，E. mundus 幼虫在发育过程中通常不会接触到宿主组织，也不会吞噬整个宿主。讨论了发育机制的可能原因以及包裹寄生蜂的宿主胶囊的功能。
