Description: Das Projekt "Palaeo-Evo-Devo of Malacostraca - a key to the evolutionary history of 'higher' crustaceans" wird vom Umweltbundesamt gefördert und von Universität Greifswald, Zoologisches Institut und Museum, Abteilung Cytologie und Evolutionsbiologie durchgeführt. In my project I aim at a better understanding of the evolution of malacostracan crustaceans, which includes very different groups such as mantis shrimps, krill and lobsters. Previous studies on Malacostraca, on extant as well as on fossil representatives, focussed on adult morphology.In contrast to such approaches, I will apply a Palaeo-Evo-Devo approach to shed new light on the evolution of Malacostraca. Palaeo-Evo-Devo uses data of different developmental stages of fossil malacostracan crustaceans, such as larval and juvenile stages. With this approach I aim at bridging morphological gaps between the different diverse lineages of modern malacostracans by providing new insights into the character evolution in these lineages.An extensive number of larval and juvenile malacostracans is present in the fossil record, but which have only scarcely been studied. The backbone of this project will be on malacostracans from the Solnhofen Lithographic Limestones (ca. 150 million years old), which are especially well preserved and exhibit minute details. During previous studies, I developed new documentation methods for tiny fossils from these deposits, e.g., fluorescence composite microscopy, and also discovered the first fossil mantis shrimp larvae. For malcostracan groups that do not occur in Solnhofen, I will investigate fossils from other lagerstätten, e.g., Mazon Creek and Bear Gulch (USA), or Montceaules- Mines and La-Voulte-sur-Rhône (France). The main groups in focus are mantis shrimps and certain other shrimps (e.g., mysids, caridoids), as well as the bottom-living ten-footed crustaceans (reptantians). Examples for studied structures are leg details, including the feeding apparatus, but also eyes. The results will contribute to the reconstruction of 3D computer models.The data collected in this project will be used for evaluating the relationships within Malacostraca, but mainly for providing plausible evolutionary scenarios, how the modern malacostracan diversity evolved. With the Palaeo-Evo-Devo approach, I am also able to detect shifts in developmental timing, called heterochrony, which is interpreted as one of the major driving forces of evolution. Finally, the reconstructed evolutionary patterns can be compared between the different lineages for convergencies. These comparisons might help to explain the convergent adaptation to similar ecological niches in different malacostracan groups, e.g., life in the deep sea, life on the sea bottom, evolution of metamorphosis or of predatory larvae.As the project requires the investigation of a large number of specimens in different groups, I will assign distinct sub-projects to three doctoral researchers. The results of this project will not only be published in peer-reviewed journals, but will also be presented to the non-scientific public, e.g., during fossil fairs or museum exhibitions with 3D models engraved in glass blocks.
SupportProgram
Origin: /Bund/UBA/UFORDAT
Tags: Hirsch ? Hummer ? Krill ? Garnele ? Main ? Greifswald ? Bär ? Computer ? Fluoreszenz ? Krustazeen ? Verbundwerkstoff ? Bach ? Larve ? Beleuchtung ? Morphologie ? Ökologische Nische ? Brunnen ? Frankreich ? USA ? Gebäude ? Lagerstätte ? Licht ? Meeresboden ? Mikroskopie ? Szenario ? Tiefsee ? Kalkstein ? Erwachsener ? Ingenieurgeologie ? Metamorphose ? Meeresgewässer ? Literaturauswertung ? Paläontologie ? Studie ? Sediment ? Bewertung ? Daten ? Evolution ? Geologie ? Ausstellung ? BEISPIEL ? GEGENWART ? HILF ? KONSERVE ? METHODE ? PROBE ? Rhone ? SONSTIG ? UMGESTALTUNG ? UNTERSUCHUNG ? VERGLEICH ? VERGLEICHEN ? WISSENSCHAFTLICH ? Diversität ? AUSSTELLUNGSSTUECK ? Dokumentationswesen ? EIN ? EINSATZ ? ERGEBNIS ? EVOLUTIONAER ? Fütterung ?
Region: Mecklenburg-Vorpommern
License: cc-by-nc-nd/4.0
Language: Deutsch
Time ranges: 2013-01-01 - 2025-02-04
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