Effects of pre-overwintering conditions on eupyrene and apyrene spermatogenesis after overwintering in Polygonia c-aureum (Lepidoptera: Nymphalidae)

被引：5
作者：
Hiroyoshi, Satoshi [1 ]
Yoshimura, Jin [2 ,3 ,4 ,5 ]
Iwabuchi, Kikuo [1 ]
Reddy, Gadi V. P. [6 ]
Mitsuhashi, Jun [1 ,7 ]
机构：
[1] Tokyo Univ Agr & Technol, Lab Appl Entomol, Fac Agr, Fuchu, Tokyo 1838509, Japan
[2] Shizuoka Univ, Grad Sch Sci & Technol, Hamamatsu, Shizuoka 4328561, Japan
[3] Shizuoka Univ, Dept Math & Syst Engn, Hamamatsu, Shizuoka 4328561, Japan
[4] Chiba Univ, Marine Biosyst Res Ctr, Chiba 2995502, Japan
[5] SUNY Syracuse, Coll Environm Sci & Forestry, Dept Environm & Forest Biol, Syracuse, NY 13210 USA
[6] Montana State Univ, Western Triangle Ag Res Ctr, 9546 Old Shelby Rd,POB 656, Conrad, MT 59425 USA
[7] 1-28-13 Koishikawa,Bunkyou Ku, Tokyo 1120002, Japan
来源：
JOURNAL OF INSECT PHYSIOLOGY | 2017年 / 100卷
关键词：
Adult diapause; Overwintering; Polygonia c-aureum; Sperm; MOTH EPHESTIA-CAUTELLA; MORI-L LEPIDOPTERA; DICHOTOMOUS SPERMATOGENESIS; CIRCADIAN-RHYTHM; CODLING MOTH; BOMBYX-MORI; TESTICULAR DEVELOPMENT; SPERM PRODUCTION; SPERMATOZOA; AGE;
D O I：
10.1016/j.jinsphys.2017.04.008
中图分类号：
Q96 [昆虫学];
学科分类号：
摘要：
Sperm polymorphism is widely known in invertebrates. In insects, Lepidoptera has two types of sperm: nucleated eupyrene (fertile) sperm and anucleated apyrene (unfertile) sperm. These sperm types are produced during post-embryogenesis, and eupyrene spermatogenesis precedes apyrene spermatogenesis. During overwintering, spermatogenesis stops and a portion of undifferentiated-stage spermatocytes degenerate. After overwintering, spermatogenesis restarts with unaffected spermatogonia. However, how new spermatozoa arise in the adult testes after overwintering is not known in Lepidoptera. In this study, we investigated the spermatogenesis events in the nymphalid butterfly Polygonia c-aureum after overwintering under various environmental conditions. Our results indicate that both eupyrene and apyrene spermatogenesis restart at any stopping stage and sperm of these types are regenerated in no particular order after adult insect overwintering. This suggests that the spermatogenesis occurring after overwintering proceeds without embryogenetic restrictions related to the developmental sequence.
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页码：1 / 8
页数：8
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