Observations on germ band development in the cellar spider Pholcus phalangioides

Observations on germ band development in the cellar spider Pholcus phalangioides
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地窖蜘蛛 Pholcus phalangioides 种带发育的观察

DOI:
10.1007/s00427-016-0562-3
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发表时间:
2016
影响因子:
2.4
通讯作者:
Prpic NM
Prpic NM
中科院分区:
生物学4区
文献类型:
--
作者:
Turetzek N;Prpic NM

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最近大多数关于蜘蛛胚胎发育的研究都集中在物种丰富的蜘蛛(占所有现存物种的80%以上)的代表上。然而,小型蜘蛛群体的胚胎发生却没有得到很好的研究。在这里,我们描述了蜘蛛物种pholcus phalangioides的胚芽带的发育,pholcus phalangioides是单倍体蜘蛛的代表,在系统发育上是完整蜘蛛的姐妹群。我们发现,从径向对称的胚胎移植体到双边对称的胚带的转变涉及胚胎移植体中心细胞的积累(初代增厚)。然后这些细胞分散在整个胚胎基质中。然后在胚胎原植体的中心出现细胞的二次增厚,这种增厚扩大并形成节段附加区。我们还证实,胆索体的主要部分最初发育为管状结构,其部分在倒置过程中依次向下折叠在蛋黄上。这种特殊的opisthosoma形成模式还没有在entelegyne蜘蛛中报道过,但是有必要对这个多样化的群体进行更全面的采样,以确定entelegyne蜘蛛是否确实缺乏这种特性。
Most recent studies of spider embryonic development have focused on representatives of the species-rich group of entelegyne spiders (over 80 % of all extant species). Embryogenesis in the smaller spider groups, however, is less well studied. Here, we describe the development of the germ band in the spider speciesPholcus phalangioides, a representative of the haplogyne spiders that are phylogenetically the sister group of the entelegyne spiders. We show that the transition from radially symmetric embryonic anlage to the bilaterally symmetric germ band involves the accumulation of cells in the centre of the embryonic anlage (primary thickening). These cells then disperse all across the embryonic anlage. A secondary thickening of cells then appears in the centre of the embryonic anlage, and this thickening expands and forms the segment addition zone. We also confirm that the major part of the opisthosoma initially develops as a tube shaped structure, and its segments are then sequentially folded down on the yolk during inversion. This special mode of opisthosoma formation has not been reported for entelegyne spiders, but a more comprehensive sampling of this diverse group is necessary to decide whether this peculiarity is indeed lacking in the entelegyne spiders.
蜘蛛胚胎的整体原位杂交。
DOI: --
发表时间: 2008
影响因子: --
作者:
Nikola;M. Schoppmeier;W. Damen
通讯作者: W. Damen
DOI: 10.1093/molbev/msv200
发表时间: 2016
影响因子: 10.7
作者:
Natascha Turetzek;Matthias Pechmann;Christoph Schomburg;J. Schneider;Nikola-Michael Prpic
通讯作者: Natascha Turetzek;Matthias Pechmann;Christoph Schomburg;J. Schneider;Nikola-Michael Prpic
卵子发生过程中小鼠α6和β1整合素亚基的基因表达时序和卵膜定位
DOI: 10.1006/dbio.1998.8923
发表时间: 1998
影响因子: 2.7
作者:
M. Zuccotti;P. Rossi;E. Fiorillo;S. Garagna;A. Forabosco;C. Redi
通讯作者: C. Redi
DOI: 10.1007/bf02457638
发表时间: 1991-01-01
期刊: ROUXS ARCHIVES OF DEVELOPMENTAL BIOLOGY
影响因子: --
作者:
SANDEMAN, R;SANDEMAN, D
通讯作者: SANDEMAN, D
蜘蛛胚胎的收集和固定。
DOI: 10.1101/pdb.prot5067
发表时间: 2008
期刊: CSH protocols
影响因子: --
作者:
Nikola;M. Schoppmeier;W. Damen
通讯作者: W. Damen