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Galleria Tassonomica
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Natura Mediterraneo
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 Nota! La determinazione degli insetti necessita quasi sempre di un'indicazione geografica e temporale precisa.
Invitiamo quindi gli utenti ad inserire questi dati ogni volta che viene richiesta una determinazione o viene postata una foto di un insetto. I dati forniti dagli utenti ci consentiranno anche di attribuire un valore scientifico alle segnalazioni, contribuendo a migliorare e integrare le attuali conoscenze sulla distribuzione delle specie postate.
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 Discussione  |
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Cmb
Moderatore
Città: Buers
Prov.: Estero
Regione: Austria
12844 Messaggi
Flora e Fauna |
 Inserito il - 23 febbraio 2014 : 19:40:54
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Nella mia ricerca virtuale sulle Anisoptera ho trovato questo lavoro nuovo moleculare da
Froufe E., Ferreira S., Boudot J.-P., Alves P.C. & D. J. Harris 2014: Molecular phylogeny of the Western Palaearctic Cordulegaster taxa (Odonata: Anisoptera: Cordulegastridae). – Biolog. Journ. Linn. Soc. 111: 49,57.
| Abstract
Although Odonata are a key component of many freshwater ecosystems, their taxonomy and evolutionary history is still far from being well resolved. In the present study, we report the first molecular phylogeny for the Western Palaearctic Cordulegaster genus (Odonata: Anisoptera: Cordulegastridae). We sequenced fragments of both mitochondrial and nuclear genes [cytochrome c oxidase I (COI) and Internal Transcribed Spacer-1 (ITS-1)] from eight species and 13 subspecies, from western, southern and central Europe, Turkey, and Morocco. Our data support the existence of two major groups corresponding to the traditional boltonii- and bidentata-groups. Both groups are monophyletic based on COI sequences and the distinctiveness of Cordulegaster princeps, Cordulegaster trinacriae, Cordulegaster picta and Cordulegaster heros relative to Cordulegaster boltonii, and Cordulegaster helladica and Cordulegaster insignis relative to Cordulegaster bidentata, is confirmed. All species are also monophyletic for ITS-1, with the exception of Cordulegaster helladica buchholzi, which shares the haplotype with C.insignis. Although moderate levels of genetic diversity were found within C.boltonii, there was no clear separation among the four subspecies, with the exception of the populations of Cordulegaster boltonii algirica from North Africa. Similarly, no genetic differentiation was found between the two subspecies of C.bidentata, Cordulegaster bidentata bidentata and Cordulegaster bidenta sicilica. © 2013 The Linnean Society of London, Biological Journal of the Linnean Society, 2014, 111, 49–57. |
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Cmb
Moderatore
Città: Buers
Prov.: Estero
Regione: Austria
12844 Messaggi
Flora e Fauna |
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Kostantino
Utente V.I.P.
Città: Procida
Prov.: Napoli
Regione: Campania
450 Messaggi
Tutti i Forum |
Inserito il - 28 febbraio 2014 : 17:26:10
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| Messaggio originario di Cmb:
Nella mia ricerca virtuale sulle Anisoptera ho trovato questo lavoro nuovo moleculare da
Froufe E., Ferreira S., Boudot J.-P., Alves P.C. & D. J. Harris 2014: Molecular phylogeny of the Western Palaearctic Cordulegaster taxa (Odonata: Anisoptera: Cordulegastridae). – Biolog. Journ. Linn. Soc. 111: 49,57.
| Abstract
Although Odonata are a key component of many freshwater ecosystems, their taxonomy and evolutionary history is still far from being well resolved. In the present study, we report the first molecular phylogeny for the Western Palaearctic Cordulegaster genus (Odonata: Anisoptera: Cordulegastridae). We sequenced fragments of both mitochondrial and nuclear genes [cytochrome c oxidase I (COI) and Internal Transcribed Spacer-1 (ITS-1)] from eight species and 13 subspecies, from western, southern and central Europe, Turkey, and Morocco. Our data support the existence of two major groups corresponding to the traditional boltonii- and bidentata-groups. Both groups are monophyletic based on COI sequences and the distinctiveness of Cordulegaster princeps, Cordulegaster trinacriae, Cordulegaster picta and Cordulegaster heros relative to Cordulegaster boltonii, and Cordulegaster helladica and Cordulegaster insignis relative to Cordulegaster bidentata, is confirmed. All species are also monophyletic for ITS-1, with the exception of Cordulegaster helladica buchholzi, which shares the haplotype with C.#8201;insignis. Although moderate levels of genetic diversity were found within C.#8201;boltonii, there was no clear separation among the four subspecies, with the exception of the populations of Cordulegaster boltonii algirica from North Africa. Similarly, no genetic differentiation was found between the two subspecies of C.#8201;bidentata, Cordulegaster bidentata bidentata and Cordulegaster bidenta sicilica. © 2013 The Linnean Society of London, Biological Journal of the Linnean Society, 2014, 111, 49–57. |
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Ma già circa 30 anni fa, Davies & Tobin (The dragonflies of the world: a systematic list of the extant species of Odonata. Vol 1: Zygoptera, Anisozygoptera. Vol 2: Anisoptera. Utrecht : S.I.O., 1984-1985) consideravano C. b. bidentata e C. b. sicilica un'unica sottospecie.
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