Animals use acoustic vocalisation as a very efficient means of communication because the sound does not require visual contact between emitter and receiver, it can travel over long distances and can carry the information content under low visibility conditions. Animals use sound for mate attraction, territorial defence and for early warning of other members of the species of the presence of dangerous predators. Acoustic surveying can be used for rapid assessment programmes (RAP), which quickly...
Detailed description of the data set from the thesis of Dr. rer. nat. Katharina Schneeberg: "The evolution of head structures in Diptera and the phylogeny of the order", Friedrich-Schiller-Universität Jena (2014) as part of the DFG project "The Evolution of larval and adult features in Diptera (Insecta). DFG RB 1789/6"
The ichthyological collection at the collection at the Zoological Research Museum Alexander Koenig contains mainly freshwater fishes, with emphasis on South American and later on European, African and Asian species.