단성생식종인 벼물바구미 (Lissorhoptrus oryzophilus Kuschel)와 양성생식종인 쌀바구미(Sitophilus oryzae L.)의 생식기관계를 해부현미경 및 광학현미경하에서 비교 관찰하였다. 벼물바구미는 한쌍의 난소, 수란관, 수정낭, 수정낭선 및 부속선들로 이루어진 암컷 내부생식기관만을 갖고 있었다. 수정낭은 하나의 관(spermathecal duct)에 의하여 실과 연결되어 있었으며, 내강은 비어있었다. 부속선에서는 하나의 관으로 시작하여 말단부에서 2개로 분지된 후 각각 측수란관에 연결되어 있었다. 영양구는 난소의 성장과 함께 신장되었으며 영양핵의 수 역시 증가하였다. 쌀바구미의 암컷에서도 한쌍의 난소, 수란관, 수정낭 및 부속선 등이 관찰되었으나 벼물바구미와는 달리 수정낭선은 관찰되지 않았다. 또한 쌀바구미의 수정낭은 두개의 관(spermathecal duct)으로 분지되어 각기 양쪽 측수란관과 실에 연결되지만 측수란관으로 연결될 때에는 다시 양쪽으로 나누어졌다. 그리고 쌀바구미의 부속선은 4개의 관으로 분지되어 측수란관과 실에 각각 2개씩 연결되어 있었으며, 측수란관과 연결되는 관은 수정낭에서 시작되어 말단부에서 분지된 관과 합쳐졌다. 쌀바구미의 수컷은 한쌍의 정소, 한쌍의 부속선, 한쌍의 저정낭, 그리고 사정관으로 구성되었다. 정소 내부의 각 cysts에는 각 성숙단계의 정세포들 혹은 정자들로 충만되어 있었다.
To compare reproductive systems of both parthenogenetic and gamogenetic species, rice water weevil (Lissorhoptrus oryzophilus Kuschel) and rice weevil (Sitophilus oryzae L.) were selected and observed morphologically by stereo and light microscope. The female reproductive system of rice water weevil was consisted of paired ovarioles, oviduct, spermatheca, spermathecal gland and accessory gland. While the empty spermatheca and the vagina were connected by a spermathecal duct, a single duct from the accessory gland ran toward the oviduct and finally divided into two small duct, and then attached to each lateral oviducts. Germarium was elongated and trophocytes were increased in number during ovary maturation. After the oviposition, the number of trophocytes were decreased. The female reproductive system of rice weevil was similar to that of the former species except no spermathecal gland. However, the spermathecal gland was divided into two ducts, one was directly connected to the vagina, and the other was branched into two small ducts before connecting with two lateral oviducts. Additionally, the accessory gland of rice weevil was separated four ducts; two were attached to both lateral sides of vagina, and the other two were fused into each spermathecal ducts of the spermathecal and connected to lateral oviducts each other. Germarium was compactly filled with small trophocytes, except the caudal portion containing liquid substance. The male reproductive system of rice weevil was consisted of a pair of testes and an ejaculatory duct. Each of testis contains a seminal vesicle and accessory gland. Testis was formed two hemispheral structure to fuse each other and surrounded by testicular epithelium, and many cysts in the testis were repleted with sperms in the various stages of maturation. Although the similarity was shown on two materials, their number of spermathecal ducts and the duct from the accessory gland, and position of adherence were quite different between two species.
