Periodic abdominal pumping supports leg development during metamorphosis in tenebrionid beetle Zophobas atratus
Periodic abdominal pumping supports leg development during metamorphosis in tenebrionid beetle Zophobas atratus
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DOI：
10.1016/j.cbpa.2008.02.012
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发表时间：
2008-05-01
影响因子：
2.3
通讯作者：
Ichikawa, Toshio
中科院分区：
文献类型：
--
作者：
Ichikawa, Toshio
有节奏的腹部抽水运动在蛹的巨大mealworm甲虫Zophobas atratus造成大的血淋巴压力脉冲约20毫米汞柱。切断第一、二腹神经节之间的腹神经索（VNC），完全阻断腹泵运动。横切的VNC，直到2天后化蛹造成的发育缺陷的成年腿：胫骨和跗骨段的形态发育严重迟缓，和段仍然覆盖着厚厚的蛹角质层。在切断VNC后，通过人工诱导节律性腹部弯曲3天来挽救发育缺陷。在蛹期，腹泵的阻塞并不增加水分的损失量。移植的胫骨段缺乏主动气管通气，可形成较厚的成人表皮。结果表明，腹泵运动在蛹期支持成人腿的发展，促进血淋巴循环。(C)2008年爱思唯尔公司All rights reserved.
Rhythmic abdominal pumping movements in a pupa of giant mealworm beetle Zophobas atratus caused large hemolymph pressure pulses of approximately 20 mmHg. The abdominal pumping movements were completely blocked by transecting the ventral nerve cord (VNC) between the first and second abdominal ganglia. Transection of the VNC until 2 days after pupation caused a developmental defect of adult legs: morphogenesis of the tibial and tarsal segments was severely retarded, and the segments remained covered with a thick pupal cuticle. The developmental defect was rescued by artificially inducing rhythmic abdominal bending for 3 days after transection of VNC. Blocking of the abdominal pump did not increase the amount of water loss during the pupal period. The transplanted tibial segments lacking active tracheal ventilation could form a thick adult cuticle. The results suggest that abdominal pumping movements during the pupal period support the development of adult legs by facilitating hemolymph circulation. (C) 2008 Elsevier Inc. All rights reserved.