Acta Entomologica Sinica (1998) 41, 269-273
Changkun Chen, Guoqing Li, Yinchang Wang and Bing Hu (1998)
[Valvular structure and function of constrictions of mesodermal glands of male adult reproductive tract in black cutworm, Agrotis ypsilon]
Acta Entomologica Sinica 41 (3), 269-273
Abstract: Valvular structure and function of mesodermal glands of male reproductive tract in the black cutworm, Agrotis ypsilon, were studied with light and electron microscopies. The results were summarized as follows:
(1) Distinct constrictions occur between and within the various parts of mesodermal glands of the male reproductive tract. There were seven constrictions located between male accessory gland-seminal vesicle, seminal vesicle-1st segment of spermatophore gland, 1-2, 2-3, 3-4, 4-5 segments of spermatophore gland, and 5th segment of spermatophore gland-c tubule.
(2) The histological structure of constriction consisted of four successive layers: valvular cells, basal lamella, muscle and peritomeal membrane.
(3) The valvular structure characteristics of constriction cell were as follows: apical region lengthened and expanded into mushroom-like convex projection which possessed a lot of long and thin microvilli blocking the tubule lumen, the nucleus surrounded densely by rough endopalsmic reticula and some Golgi complexes, with large intercellular spaces.
(4) The results of polyacrylamide-gel-electrophoresis of the secretions of the segments of spermatophore gland divided by constrictions showed that the electrophoresis patterns were quite different. The results of the PAS reaction also showed that the forms of those secretions were different in cross section of lummen. Therefore, the valvular structure of constriction is considered to be an important part in separating secretion of mesodermal glands of male reproductive tract.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
(original language: Chinese)
Research topic(s) for pests/diseases/weeds:
general biology - morphology - evolution
Pest and/or beneficial records:
| Beneficial | Pest/Disease/Weed | Crop/Product | Country | Quarant.
|
|---|---|---|---|---|
| Agrotis ipsilon |
