Refine
Document Type
- Article (4)
Has Fulltext
- yes (4)
Is part of the Bibliography
- no (4)
Keywords
- life cycle (4) (remove)
The emerging of an acrocerid fly from an adult female of the wolf spider Pardosa saltans (C.L. Koch, 1833) was observed near Karlsruhe (Baden-Württemberg, Germany). This record supports previous results suggesting that acrocerids infect the spider's body, and not the egg sacs. A short review of the life history of acrocerids and the development of their larvae is provided, casting doubt on the infection of spider cocoons by these parasitoids.
The Asian bush mosquito (Aedes japonicus japonicus, Theobald 1901) is an invasive culicid species which originates in Asia but is nowadays present in northern America and Europe. It is a competent vector for several human disease pathogens. In addition to the public health threat, this invasive species may also be an ecological threat for native container-breeding mosquitoes which share a similar larval habitat. Therefore, it is of importance to gain knowledge on ecological and eco-toxicological features of the Asian bush mosquito. However, optimal laboratory feeding conditions have not yet been established. Standardized feeding methods will be needed in assessing the impact of insecticides or competitional strength of this species. To fill this gap, we performed experiments on food quality and quantity for Ae. j. japonicus larvae. We found out that the commercial fish food TetraMin (Tetra, Melle, Germany) in a dose of 10 mg per larva is the most suitable food tested. We also suggest a protocol with a feeding sequence of seven portions for all larval stages of this species.
Pitfall trapping in the National Park Thy, north-western Jutland, Denmark, in 2011 and 2013 revealed 3654 specimens of the harvestman Nelima gothica. In most European countries, including Denmark, this species has been considered rare and little information is available on its biology. The species was found predominantly in the yellow dune habitat close to the North Sea coast. Here it could be either very abundant or completely absent at localities only a few kilometres apart. It also occurred in lower numbers in the grey dunes and the dune heathland, and was rare in managed grassland; it disappeared from habitats further inland. In the yellow dunes high numbers were recorded especially in rather dense Ammophila arenaria vegetation not disturbed by sand shifting. The phenology follows the typical pattern of North-European Phalangiidae and Leiobuninae: an annual life-cycle with juveniles developing through late spring and summer months, reproduction in autumn and hibernation in the egg stage. The findings suggest that N. gothica may be found all along the coastal dunes of western Denmark and possibly the Wadden Sea area, though it may only locally reach high abundances. Earlier records also included the coasts of eastern Denmark.
The stinkbug Edessa leucogramma (Perty) (Hemiptera: Pentatomidae: Edessinae) is reported as a pest of young yellow guayacán trees (Handroanthus chrysanthus (Jacq.) S.O. Grose, Bignoniaceae) in the metropolitan area of the Aburra Valley in Antioquia, Colombia (AMVA). We provide a short description of the adult and immature stages and report for the first-time protozoa associated with the digestive system of this species of true bug in addition to information regarding a fungus found associated with Edessa leucogramma in the field.
ZooBank registration. urn:lsid:zoobank.org:pub:8D06E222-249D-413C-AA0A-48E34BF995C1