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Issue:ISSN 2095-1353
           CN 11-6020/Q
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Your Position :Home->Past Journals Catalog->2016年53 No.5

Antenna regeneration in Eupolyphaga sinensis (Blattaria: Corydiidae)
Author of the article:TAN Liang-Fei1, 2** ZHU Fen1 WANG Xiao-Yun1 GAO Yong-Yong1 YAO Xuan2 ZHANG Ling-Yao2 LEI Chao-
Author's Workplace:1. Institute of Insect Resources, Huazhong Agricultural University, Wuhan 430070, China; 2. Hubei Province Center for Disease Control and Prevention, Wuhan 430079, China
Key Words:Eupolyphaga sinensis, antenna amputation, regeneration, segment increase, regenerative critical period
Abstract:

[Objectives]  This study was aimed to determine the characteristics and critical period of the regenerative antennae in Eupolyphaga sinensis (Walker). [Methods]  Healthy early 1-10th instar nymphs were amputated one of their antennae and the number of antenna segments were documented after their molting. Then 0-19 day old early 4th instar nymphs were treated, observed and counted accordingly. [Results]  Different instar age of nymphs of E. sinensis were able to increase the segments of their amputated antenna by regeneration. When antennal segments of 1-10th instar nymphs were amputated to only keep three basal segments, the number of antennal segments of the next instar after the nymph molted were restored as follow: 5, 8, 12, 13-15, 15-17, 16-19, 18-20, 20-23, 22-25, 24-28, respectively. When antennal segments of the 4th instar nymphs were amputated to keep 0-2,3,5,10,15 or 20 segments, the number of antennal segments of the next instar after the nymph molted were restored as follow: 11-12,13-15,15-19,18-21, 19-25 or 24-27, respectively. Among them, the antennae which were kept 20 segments basically restored to the normal number of segments after molting. Antennae of old nymphs in 4th instars were amputated to keep 3 segments during different day old: for the 0 to 8 days-old ones, the antenna segments were 13-15 after molting, and for the older than the12 days-old ones, the antenna segments were 5-6 after molting. Therefore, the critical period for regeneration antenna of 4th instar nymphs was from the 9-11 day-old. [Conclusion]  The amputated antennae could regenerate within the regenerative critical period of E. sinensis.

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