Duplication of body axes experimentally induced in spider embryos

We have published a review paper that describes twinning of spider embryos experimentally induced as well as provides a historical background on such twinning experiments in spiders. One of the conclusions of this review paper is "The two concepts of developmental biology, organizer and self-regulation, which were described in vertebrate embryology, are similarly applied in the development of spiders." Please see two movies showing body axes duplications following two different types of embryological manipulations (Movie1 and Movie2), as well as a movie showing delayed body axes formation following removal of cumulus by laser irradiation (Movie3).
 

Hiroki Oda, Sawa Iwasaki-Yokozawa, Toshiya Usui, and Yasuko Akiyama-Oda
Experimental duplication of bilaterian body axes in spider embryos: Holm’s organizer and self-regulation of embryonic fields
Development Genes and Evolution, 10 April 2019, First Online (Open Access)
DOI: 10.1007/s00427-019-00631-x
https://link.springer.com/article/10.1007/s00427-019-00631-x
 

■Movie1

Body axes duplication by transplantation of cumulus using jumping spider (Hasarius adansoni) embryos

Find more details.
https://link.springer.com/article/10.1007/s00427-019-00631-x

■Movie2

Body axes duplication by laser irradiation using house spider (Parasteatoda tepidariorum) embryos

Find more details.
https://link.springer.com/article/10.1007/s00427-019-00631-x

■Movie3

Removal of cumulus by laser irradiation using house spider (Parasteatoda tepidariorum) embryos

Find more details.
https://link.springer.com/article/10.1007/s00427-019-00631-x

Related articles

Yasuko Akiyama-Oda and Hiroki Oda (2010) Cell migration that orients the dorsoventral axis is coordinated with anteroposterior patterning mediated by Hedgehog signaling in the early spider embryo. Development 137, 1263-1273

Akiyama-Oda, Y. and Oda, H. (2006) Axis specification in the spider embryo: dpp is required for radial-to-bilateral symmetry transformation and sog for ventral patterning. Development 133, 2347-2357

Akiyama-Oda, Y. and Oda, H. (2003) Early patterning of the spider embryo: A cluster of mesenchymal cells at the cumulus produces Dpp signals received by germ disc epithelial cells. Development 130, 1735-1747

Oda, H., and Akiyama-Oda, Y. (2008) Differing strategies for forming the arthropod body plan: Lessons from Dpp, Sog and Delta in the fly Drosophila and spider Achaearanea. Development, Growth and Differentiation 50, 203-214