背景:Chrusopapallens是最有益和最有效的自然捕食者之一,以其广泛的分布而闻名,广泛的猎物谱,和优良的繁殖性能。这项研究检查了C.pallens生殖系统和精子发生的解剖结构和精细结构。
结果:C.pallens的雄性生殖系统由一对睾丸组成,输精管,精囊,附属腺体,和短射精管。睾丸在出现的那天就已经成熟了,但附属腺体直到出苗后5天才成熟。在早期精子细胞中,鞭毛在两个线粒体衍生物的一侧有一个轴突。原子核被平行的晶体和副晶体材料包围。精子细胞包膜以尾巴状的机翼向次晶体材料延伸。在成熟的精子细胞中,轴突位于两个附属体和线粒体衍生物组之间。平行结晶和顺晶材料消失了。在睾丸中,精囊的壁由一层上皮组成,肌肉连接鞘,和几个不同大小的囊泡。成熟的精囊包含128个精子。副腺体由六部分组成:腹侧乳头状突起,前腺叶,侧腺叶,精液囊肿,后肾形叶,和后乳头状突起。肌纤维和分泌颗粒广泛。
结论:这项研究提供了有关C.pallens生殖系统的信息,并为分类学和生殖生物学提供了资源。
BACKGROUND: Chrysopa pallens is one of the most beneficial and effective natural predators, and is famous for its extensive distribution, wide prey spectrum, and excellent reproductive performance. This study examined the anatomy and fine structure of the C. pallens reproductive system and spermatogenesis.
RESULTS: The male reproductive system of C. pallens comprises a pair of testes, a vas deferens, seminal vesicles, accessory glands, and short ejaculatory ducts. The testes were already mature on the day of emergence, but the accessory glands did not mature until 5 days post-emergence. In early spermatids, the flagellum had an axoneme on one side of the two mitochondrial derivatives. The nucleus was surrounded by parallel crystalline and paracrystalline materials. The
spermatid envelope extends towards the paracrystalline material in a tail-shaped wing. In mature spermatids, the axoneme is located between the two accessory bodies and mitochondrial derivative sets. The parallel-crystalline and paracrystalline materials disappeared. In the testes, the wall of seminal cysts consists of a layer of epithelium, a muscular-connective sheath, and several vesicles of different sizes. The mature seminal cysts contained 128 spermatozoa. The accessory gland is composed of six parts: ventral papilla-like protuberance, anterior glandular lobe, lateral glandular lobe, seminal cyst, posterior kidney-shaped lobe, and posterior papilla-like protuberance. Muscle fibers and secretory granules are extensive.
CONCLUSIONS: This study provides information on the reproductive system of C. pallens and offers a resource for taxonomy and reproductive biology.