自然界里蜱螨数量仅次于昆虫,它们的习性及生活方式多样。 一、螨类的繁殖 螨类是雌雄异体的动物,除若干螨类至今未发现雄螨外,都有雌雄存在。它们的生殖方式是有性生殖。有些螨类经雌雄交配,产生受精卵,经幼螨和若螨期,而后发育为成螨。这称为两性生殖。雌雄交配方式,有些是雄螨以交接器直接插入雌螨交配孔,把精子给予雌螨(图一)。但也有不少螨类,其雄螨缺乏交接器,交配方式是雄螨产下精包(图二),内包含精子。雌螨以螯肢、足或须肢把精包塞入雌螨交配孔;或象瘿螨那样,雄螨把精包产在叶片上,由雌螨拾起精包,以完成授精过程。多数螨类的受精卵发育 In nature, the number of acarids is second only to insects, their habits and diverse lifestyles. First, the reproduction of mites Mites are dioecious animals, in addition to some mites have not been found male mites, there are male and female exist. Their mode of reproduction is sexual reproduction. Some mites are mated to each other by males and females to produce zygotes that pass the larval and nymphal stages and develop into mites. This is called amphipation. Male and female mating methods, some male mites to the female connector directly into the mating hole, the sperm give female mites (Figure 1). But there are also many mites, the male mites lack of connectors, mating method is male mites produce fine package (Figure 2), which contains sperm. Female mites to the elbows, feet, or amputated excrement into the female mite mating holes; or as scabies mites, the mite of the elite in the leaves produced by the female mites pick up the refined package to complete the process of insemination. Most mites fertilized eggs develop