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Dasyhelea flavifrons (Guérin, 1833), male (a, b, d), female (c): a – palpus; b – femur and tibia of fore leg; c – subgenital plate and seminal capsule; d – male genitalia, ventral view
Source publication
The water-filled tree hole fauna of biting midges (Diptera: Ceratopogonidae) in Slovakia is documented for the first time. Three Culicoides Latreille and two Dasyhelea Kieffer species were reared from these habitats. Epidemiological significance of C. obsoletus (Meigen, 1818) is briefly discussed.
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Indoor and outdoor winter activity of Culicoides spp. (Diptera: Ceratopogonidae) in central Italy was investigated in order to evaluate whether indoor activity might account for the overwintering of bluetongue virus, as has been hypothesized by some authors. Weekly Culicoides collections were performed at three farms over three consecutive winter s...
Bitingmidges of the genus Culicoides are vectors of bluetongue virus. Their larval habitats are poorly known inNorthern Europe. Three classes of the CORINE land cover index, found within 300 m of four farms in Denmark, were used to stratify sampling sites for a total of 360 soil core samples from 30 sampling
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Citations
... The preimaginal stages of D. bilineata are well-adapted to periodic desiccation and wide temperature fluctuations (Zilahi-Sebess, 1931;Valkanov, 1941;Disney, 1975). The second species is D. flavifrons (Guérin, 1833), whose larvae are more terrestrial and can be found in the sap oozing from various tree species and in tree holes as well (Oboňa and Dominiak, 2014). D. flavifrons is likely a rare summer inhabitant of teasel phytotelmata. ...
Teasels (Dipsacus spp.) are among the few European plant species that can create small aquatic ecosystems, known as phytotelmata, in their leaf axils. However, these unique environments have received little research attention. We performed the first detailed study of phytotelmata in teasels, aiming to describe the physical habitat and macroinvertebrate communities across different leaf axil levels. We explored 64 phytotelmata on 20 teasel plants in Slovakia (Central Europe). These small aquatic ecosystems contained less than 100 ml of water, exhibited a pH ranging from slightly acidic to neutral, had very low oxygen content, and showed highly variable conductivity. We collected more than 1,000 larvae of Diptera, representing at least ten aquatic invertebrate taxa. The dominant species found in these communities were the chironomid Metriocnemus eurynotus (Holmgren, 1883), followed by ceratopogonids of the genus Dasyhelea. The oldest, bottom-situated phytotelmata showed the highest invertebrate density and species richness, suggesting an important role of ecosystem age and the probability of colonization in the community assembly process. These highly replicated ecosystems with simple communities may serve as useful models for studying various ecological phenomena such as metacommunity dynamics, succession, community assembly, biodiversity-ecosystem functioning or mutualistic interactions.
... (3) tree cavities, plants and cracks (Kitaoka 1975;Nevill and Dyce 1994;Obona and Dominiak 2014;Pappas and Pappas 1990;Rioux et al. 1959); and (4) decaying plant material, fruits and fungi (Braverman et al. 1974;Buxton 1960;Estrada et al. 2011;Mellor and Pitzolis 1979;Dik 2007b, Zimmer et al. 2008). Each female could lay between 30 and 200 eggs per batch (Barceló and Miranda 2018;Braverman and Linley 1994;Nevill 1967;Veronesi et al. 2009,). ...
Biting midges of the genus Culicoides (Diptera; Ceratopogonidae) are the main vectors of several arboviral diseases such as bluetongue, African horse sickness and epizootic haemorrhagic disease among others. Culicoides females acquire the virus from mammal hosts by haematophagous feeding and they transmit the virus to the following host after the completion of the extrinsic incubation period. Despite the importance of Culicoides during the last two decades after several waves of bluetongue outbreaks in regions such as Europe, there is still a lack of effective control methods against the vectors. In addition, little information is also available about crucial aspects of their bioecology that will lead to a better use of control methods. Here we review the major control methods developed for control of Culicoides spp. Those methods also need monitoring tools to estimate the abundance and seasonality of adult and larvae Culicoides populations. Control methods reviewed here include mechanical methods, chemical methods including 'in vitro' trials, semifield and field trials, as well as biological, genetic and biotechnological control methods. At the moment of writing this review, insecticide pour-on treatments as well as the use of vector-proof establishment appear to be the most efficacious method to protect domestic animals against Culicoides feeding activity.
The fourth instar larva and pupa of Dasyhelea flavifrons Guérin-Méneville are redescribed, illustrated, and photomicrographed using binocular, phase-contrast, and scanning electron microscopy. Comparisons with the American species of the grisea group were made. The immatures were collected by using a siphon bottle in tree-holes and from water collected in dead snail shells in Salta Province, Argentina, transported to the laboratory and there bred to the emergence of the adults. Details on larval habitats are given. These are the first records from Argentina and in gastrotelmata.
Background and Purpose: Fountains are common, but usually overlooked
anthrotelmata. To date, little attention has been paid to these ecosystems.
This study reveals the first, more comprehensive evidence about seasonal
changes of fauna in urban fountains and their insect and non-insect
biodiversity.
Materials and Methods: The biodiversity of aquatic organisms from
6 fountains in the city center of Prešov (Eastern Slovakia) were studied and
basic environmental characteristics, such as pH, temperature, oxygen saturation
and conductivity were measured during 2014. Water depth of studied
fountains varied between 10 – 30 cm and water volume from 1.9 to 51 m3.
For statistical evaluation nonparametric analyses were used.
Results and Conclusion: In total, over 66 taxa of the systematic groups
Rotifera, Nematoda and Arthropoda were found. The most abundant insect
group was Diptera. Zavrelimyia nubila (Diptera: Chironomidae) was recorded
in Slovakia for the first time. Relative abundance of the evaluated
insect taxa differed depending on the sampling date, and by water characteristics.
Water volume and depth correlated negatively, but not significantly
with relative abundance of all evaluated insect groups. Water pH
showed positive significant correlation with relative abundance of beetles,
and negative, but not significant, correlation with the relative abundance
of flies and mayflies.
