Topic
Lestes barbarus
About: Lestes barbarus is a research topic. Over the lifetime, 6 publications have been published within this topic receiving 48 citations. The topic is also known as: shy emerald damselfly.
Papers
30 Dec 2010
TL;DR: Evidence indicates that many species are now emerging signifi cantly earlier than in the past, though trends relating to the end of the fl ight period are less clear cut.
Abstract: Th e history of recording and monitoring of Odonata in Britain is briefl y described. Results are then presented which suggest that the country’s Odonata fauna is currently in a period of fl ux, in a manner consistent with the actions of a high-level regulatory factor such as climate change. Th e ranges of many resident species are shifting. Leucorrhinia dubia has recently been lost from southern England, but many species are presently expanding their ranges to the north and west, some (such as Aeshna mixta and Anax imperator) with considerable speed. In addition to these changes, a number of ‘southern’ species have started to appear in Britain for the very fi rst time. Th ese include Lestes barbarus, Erythromma viridulum (which has now become a locally-common resident in southeast England), Anax parthenope and Crocothemis erythraea. In addition to these distributional changes, some recent trends in fl ight times are also discussed. Evidence indicates that many species are now emerging signifi cantly earlier than in the past, though trends relating to the end of the fl ight period are less clear cut.
22 citations
30 Dec 2010
TL;DR: Since 1980, eight southern dragonfl y species have been regularly recorded in Flanders and show a signifi cant increase in relative abundance, relative area as well as indications of reproduction since the beginning of the nineties, with peak occurrence mainly in the 1995–1999 period.
Abstract: Since 1980, eight southern dragonfl y species have been regularly recorded in Flanders. Th ey show a signifi cant increase in relative abundance, relative area as well as indications of reproduction since the beginning of the nineties, with peak occurrence mainly in the 1995–1999 period. Since 2000, numbers are lower but more species were simultaneously present. Th ree species, Lestes barbarus, Crocothemis erythraea and Sympetrum fonscolombii, show a combination of earlier arrival, earlier reproduction with a higher frequency and higher maximum ranges and can be considered as having stable populations in Flanders. All other southern species show in general a later arrival, only one confi rmed or probable reproduction and have much lower maximum ranges. Two other species, reaching their northern limit of distribution in Flanders, Erythromma viridulum and E. lindenii have clearly expanded their relative area since the eighties. Th eir relative abundance also increased although this shows more fl uctuations.
15 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
1 Jan 1997
2 citations
1 Jan 1990
TL;DR: In accordance with what is most frequently observed in dragonflies, in Lestes barbarus sperm translocation is performed only once aftertandem formation, even though copulation can be interrupted and resumed several times.
Abstract: rus (Fabr.) (Zygoptera:Lestidae) The typical sequence of dragonfly mating includes tandem formation, intra-male sperm translocation and copulation,which is followed by oviposition. Minor variations ofthis scheme exist, as e.g., when sperm translocation is not performed between tandem formation and copulation (J.K. WAAGE, 1973, Behaviour 47: 240-256; A. KUMAR & M.PRASAD, 1977, Odonatologica 6: 163-171; C. UTZHRI, 1985, Odonaiologica 14: 227-238). In accordance with what is most frequently observed in dragonflies, in Lestes barbarus sperm translocation is performed only once aftertandem formation,even though copulation can be interrupted and resumed several times (E. LOIBL, 1958, Z. Tierpsychol. 15: 54-81; C. UTZERI et al„ 1987, Fragm. enlomol. 20: 1-22). Nevertheless, we are herewith reporting on two exceptional
1 citations
Related Topics (5)
Performance Metrics
| Year | Papers |
|---|---|
| 2015 | 2 |
| 2010 | 2 |
| 1997 | 1 |
| 1990 | 1 |