Department of Invertebrate Zoology and Limnology, Institute for Research on Biodiversity, Center of Molecular Biology and Biotechnology, Faculty of Biology, University of Szczecin, Wąska 13, 71-415, Szczecin, Poland.
Department of Plant Taxonomy and Phytogeography, Institute for Research on Biodiversity, Center of Molecular Biology and Biotechnology, Faculty of Biology, University of Szczecin, Wąska 13, 71-415, Szczecin, Poland.
Exp Appl Acarol. 2018 Mar;74(3):283-289. doi: 10.1007/s10493-018-0238-y. Epub 2018 Mar 5.
Little research has been done on egg diapause and the embryonic development of water mites. The aim of this study was to check the impact of temperature and periods of light on hatching of larvae of Eylais extendens. Three batches of eggs which were spawned on 30 July were placed at one of three temperatures (4, 10 and 20 °C) and two periods of light (7 and 14 h per day). Egg hatching (both, percentage of hatched larvae and rate of hatching) was found to differ between 4 versus 10 °C and between 4 versus 20 °C, but not between 10 versus 20 °C. The periods of light had no influence on hatching. This synchronization of hatching, enabling the eggs to emerge from diapause in the spring, could be considered an evolutionary adaptation aimed at postponing hatching of late-spawned eggs until a time allowing for completion of the full development cycle, including the parasitic larval stage.
关于卵滞育和水生螨胚胎发育的研究甚少。本研究旨在检查温度和光照时间对延长水螨幼虫孵化的影响。7 月 30 日产下的三批卵分别置于三个温度（4、10 和 20°C）和两个光照时间（每天 7 小时和 14 小时）下。发现卵孵化（孵化百分比和孵化率）在 4°C 与 10°C 之间以及在 4°C 与 20°C 之间存在差异，但在 10°C 与 20°C 之间没有差异。光照时间对孵化没有影响。这种孵化的同步，使卵能够在春季从滞育中孵化出来，可以被认为是一种进化适应，旨在推迟后期产卵的卵的孵化，直到完成整个发育周期，包括寄生幼虫阶段。
