caa a22 4500 463255089 CHVBK 20180405153352.0 cr unu---uuuuu 170326e20070401xx s 000 0 eng 10.1007/s00435-007-0030-8 doi (NATIONALLICENCE)springer-10.1007/s00435-007-0030-8 The sperm structure of Embioptera (Insecta) and phylogenetic considerations [Elektronische Daten] [Romano Dallai, Ryuichiro Machida, Yoshie Jintsu, Francesco Frati, Pietro Lupetti] The sperm structure of two species of Embioptera, Embia savignyi Westwood 1837 and Aposthonia japonica (Okajima 1926), was studied. Spermatozoa of both species exhibit a monolayered acrosome and a layer of material surrounding the sperm cells for most of their length. The presence of a 9+9+2 axoneme provided with accessory microtubules with 16 protofilaments, two accessory bodies and two crystallized mitochondrial derivatives are characters shared with other polyneopteran taxa. The supposed close relationship between Embioptera and Phasmatodea is not supported by characters of the sperm ultrastructure. Springer-Verlag, 2007 Ultrastructure nationallicence Spermatozoa nationallicence Insect phylogeny nationallicence Polyneoptera nationallicence Dallai Romano Department of Evolutionary Biology, University of Siena, Via A. Moro 2, 53100, Siena, Italy aut Machida Ryuichiro Sugadaira Montane Research Center, University of Tsukuba, Ueda, Nagano, Japan aut Jintsu Yoshie Sugadaira Montane Research Center, University of Tsukuba, Ueda, Nagano, Japan aut Frati Francesco Department of Evolutionary Biology, University of Siena, Via A. Moro 2, 53100, Siena, Italy aut Lupetti Pietro Department of Evolutionary Biology, University of Siena, Via A. Moro 2, 53100, Siena, Italy aut Zoomorphology Springer-Verlag 126/1(2007-04-01), 53-59 0720-213X 126:1<53 2007 126 435 https://doi.org/10.1007/s00435-007-0030-8 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00435-007-0030-8 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Dallai Romano Department of Evolutionary Biology, University of Siena, Via A. Moro 2, 53100, Siena, Italy aut NATIONALLICENCE 700 1- Machida Ryuichiro Sugadaira Montane Research Center, University of Tsukuba, Ueda, Nagano, Japan aut NATIONALLICENCE 700 1- Jintsu Yoshie Sugadaira Montane Research Center, University of Tsukuba, Ueda, Nagano, Japan aut NATIONALLICENCE 700 1- Frati Francesco Department of Evolutionary Biology, University of Siena, Via A. Moro 2, 53100, Siena, Italy aut NATIONALLICENCE 700 1- Lupetti Pietro Department of Evolutionary Biology, University of Siena, Via A. Moro 2, 53100, Siena, Italy aut NATIONALLICENCE 773 0- Zoomorphology Springer-Verlag 126/1(2007-04-01), 53-59 0720-213X 126:1<53 2007 126 435 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer