http://www.cnr.it/ontology/cnr/individuo/prodotto/ID185268

Sperm structure of some Neuroptera and phylogenetic considerations (Articolo in rivista)

Type

Articolo in rivista (Classe)
Prodotto della ricerca (Classe)

Label

Sperm structure of some Neuroptera and phylogenetic considerations (Articolo in rivista) (literal)

Anno

2010-01-01T00:00:00+01:00 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi

10.1080/11250003.2010.497503 (literal)

Alternative label

Valentina Zaira Zizzarri; Pietro Lupetti; Roberto A. Pantaleoni; Agostino Letardi; Romano Dallai (2010)
Sperm structure of some Neuroptera and phylogenetic considerations
in Italian journal of zoology (Online); Taylor and Francis, Abingdon (Regno Unito)
(literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

Valentina Zaira Zizzarri; Pietro Lupetti; Roberto A. Pantaleoni; Agostino Letardi; Romano Dallai (literal)

Pagina inizio

35 (literal)

Pagina fine

44 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#altreInformazioni

First published on: 29 September 2010 (iFirst) then \"print\" published as: Zizzari, Z. V. , Lupetti, P. , Pantaleoni, R. A. , Letardi, A. and Dallai, R.(2011) 'Sperm structure of some Neuroptera and phylogenetic considerations', Italian Journal of Zoology, 78: 1, 35 -- 44, DOI: 10.1080/11250003.2010.497503, ISI WOS: 000288281000006 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

78 (literal)

Rivista

Italian journal of zoology (Rivista)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali

10 (literal)

Note

ISI Web of Science (WOS) (literal)
Scopu (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

ZIZZARI Z. Valentina; LUPETTI P.; DALLAI Romano > Dipartimento di Biologia evolutiva, Siena; PANTALEONI Roberto A. > associato ISE-CNR; LETARDI Agostino > ENEA (literal)

Titolo

Sperm structure of some Neuroptera and phylogenetic considerations (literal)

Abstract

Spermatozoa from members of Hemerobiidae, Chrysopidae and Mantispidae (Arthropoda; Hexapoda: Neuroptera) have been examined by electron microscopy. In all species examined, the nucleus is surrounded by a nuclear envelope that in its anterior domain, fans out laterally into one (Chrysopidae) or two wings (Hemerobiidae and Mantispidae). Furthermore, the anterior sperm region is surrounded by external dense material. In Mantispidae, sperm dimorphism with two types of spermatozoa is also confirmed: paraspermatozoa (not fertilizing), provided with giant axoneme and mitochondrial derivatives, and euspermatozoa (fertilizing). Spermatozoa of Chrysopidae and Mantispidae are characterized by the lack of an acrosome while sperm cells of Hemerobiidae are provided with a bilayered acrosome. Spermatozoa from all the investigated species have axonemes of the conventional insect type, with a 9+9+2 microtubular pattern and with accessory tubules provided with 16 protofilaments. In all the examined taxa the intertubular material has the same localization also observed in all other previously analysed Neuroptera. The mitochondrial derivatives and the accessory bodies in the three families are also described. Hemerobiidae are characterized by the presence of a large groove of the plasma membrane along the right side of the anterior sperm region, which results in an eccentric position of the axoneme. Chrysopidae have large mitochondrial derivatives, which encircle the axoneme. The peculiar feature regarding the nuclear envelope was not seen in other members of neuropteroid insects. These data are discussed in the light of the phylogenetic relationships of the taxa examined. (literal)

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