Topic
Lestes numidicus
About: Lestes numidicus is a research topic. Over the lifetime, 2 publications have been published within this topic receiving 30 citations.
Papers
Journal Article•
TL;DR: A study of Lestes "virens" in Algeria, based on SEM, size analysis, and molecular analysis of nuclear ribosomal DNA genes and spacers, reveals the presence of two taxa that can be separated by the length and sequence of their ITS1 and their adult coloration, but not by molecular features in their 18S and 5.8S genes, the ITS2 spacer, and morphology.
Abstract: A study of Lestes "virens" in Algeria, based on SEM, size analysis, and molecular analysis of nuclear ribosomal DNA genes (18S, 5.8S) and spacers (ITS1 and 2), reveals the presence of two taxa that can be separated by the length and sequence of their ITS1 and their adult coloration, but not by molecular features in their 18S and 5.8S genes, the ITS2 spacer, and morphology. This contrasts with the Enallagma cyathigerum-group, where geographically defined morphological differences were unaccompanied by differences in ITS1 and ITS2. Previous ecological data had shown the first lestid to be a summer, and the second an autumnal reproducer. The red autumnal species is here named Lestes numidicus sp. n. (holotype male, allotype female : Algeria, Lac des Oiseaux, X-1993; deposited in IRSN, Brussels); the status of the green summer species is discussed. It probably corresponds to L virens, but this is likely to be a hybrid taxon, resulting from the postglacial introgression of L numidicus with a taxon invading from the East, via the Iberian Peninsula. L. virens vestalis from France is likely to be introgressed as well. In case this hypothesis is confirmed, the first junior synonym available, L. marikovskii (Belyshev) from Kazakhstan, applies to the taxon extending from Kazakhstan-Tajikistan to Central Europe.
24 citations
TL;DR: A survey of Odonata in streams on Mount Edough, Algeria, and in Kroumiria, Tunisia, indicated strong faunistic similarities between these two areas, characterized by the presence of lotic dragonfly species with protracted larval development such as Aeshna cyanea, Boyeria irene and Onychogomphus uncatus.
Abstract: A survey of Odonata in streams on Mount Edough, Algeria, and in Kroumiria, Tunisia, indicated strong faunistic similarities between these two areas, characterized by the presence of lotic dragonfly species with protracted larval development such as Aeshna cyanea, Boyeria irene and Onychogomphus uncatus. Climatic oscillations and marine transgressions have isolated these mountains and their North African populations in the past geological times, which have led to distinct adaptations and stenotopy in various zoological and botanical groups. These mountain forests are also a refuge for aestivating Odonata with postponed reproductive maturation like Lestes numidicus, a species new for Tunisia, Lestes barbarus, Sympecma fusca, Aeshna mixta, Sympetrum meridionale and S. striolatum. In the light of increasing human encroachment, urgent conservation efforts are needed to ensure the perpetuity of these unique habitats in North Africa and their biota.
10 citations
Related Topics (5)
Performance Metrics
| Year | Papers |
|---|---|
| 2015 | 1 |
| 2003 | 1 |