In this study allozyme data were used to examine evolutionary relationships in the cosmopolitan collembolan genus Isotomurus. Fifty-six south-western European populations from 13 species were compared, with the aim of delimiting species boundaries and testing the robustness of the most frequently used morphological characters for species identification. Observed allozyme variability suggests that genetic differentiation is more pronounced than the amount of morphological variability among and within species. Convergence in models of pigmentation pattern may lead to erroneous taxonomic identification when this is the only feature used for species diagnosis. In this respect, this study confirms that diagnosis is greatly improved when assisted by biochemical or molecular analyses. Allozyme data have also been used to reconstruct evolutionary hypotheses for relationships at the species and population level. The monophyly of Isotomurus maculates, I. unifasciatus, I. fucicolus, I. nebulosus and I. pseudopalustris was confirmed on molecular grounds. Conversely, the monophyly of I. ghibellinus and I. palustris was rejected, suggesting the presence of cryptic species.

Carapelli, A., Frati, F., Fanciulli, P.P., Nardi, F., Dallai, R. (2005). Assessing species boundaries and evolutionary relationships in a group of south-western European species of Isotomurus (Collembola, Isotomidae) using allozyme data. ZOOLOGICA SCRIPTA, 34, 71-79 [10.1111/j.1463-6409.2005.00174.x].

Assessing species boundaries and evolutionary relationships in a group of south-western European species of Isotomurus (Collembola, Isotomidae) using allozyme data.

CARAPELLI, ANTONIO;FRATI, FRANCESCO;FANCIULLI, PIETRO PAOLO;NARDI, FRANCESCO;DALLAI, ROMANO
2005-01-01

Abstract

In this study allozyme data were used to examine evolutionary relationships in the cosmopolitan collembolan genus Isotomurus. Fifty-six south-western European populations from 13 species were compared, with the aim of delimiting species boundaries and testing the robustness of the most frequently used morphological characters for species identification. Observed allozyme variability suggests that genetic differentiation is more pronounced than the amount of morphological variability among and within species. Convergence in models of pigmentation pattern may lead to erroneous taxonomic identification when this is the only feature used for species diagnosis. In this respect, this study confirms that diagnosis is greatly improved when assisted by biochemical or molecular analyses. Allozyme data have also been used to reconstruct evolutionary hypotheses for relationships at the species and population level. The monophyly of Isotomurus maculates, I. unifasciatus, I. fucicolus, I. nebulosus and I. pseudopalustris was confirmed on molecular grounds. Conversely, the monophyly of I. ghibellinus and I. palustris was rejected, suggesting the presence of cryptic species.
Carapelli, A., Frati, F., Fanciulli, P.P., Nardi, F., Dallai, R. (2005). Assessing species boundaries and evolutionary relationships in a group of south-western European species of Isotomurus (Collembola, Isotomidae) using allozyme data. ZOOLOGICA SCRIPTA, 34, 71-79 [10.1111/j.1463-6409.2005.00174.x].
File in questo prodotto:
File Dimensione Formato  
Carapelli et al 2005 Allozimi Isotomurus.pdf

non disponibili

Tipologia: Post-print
Licenza: NON PUBBLICO - Accesso privato/ristretto
Dimensione 263.12 kB
Formato Adobe PDF
263.12 kB Adobe PDF   Visualizza/Apri   Richiedi una copia

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11365/21992
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo