A5015429277- Crustacean biology and ecology
- Fish biology, ecology, and behavior
- Fish Biology and Ecology Studies
- Coral and Marine Ecosystems Studies
- Amphibian and Reptile Biology
- Genetic diversity and population structure
- Marine Biology and Ecology Research
- Species Distribution and Climate Change
- Marine and fisheries research
- Ichthyology and Marine Biology
- Aquatic Invertebrate Ecology and Behavior
- Subterranean biodiversity and taxonomy
- Photosynthetic Processes and Mechanisms
- Fish Ecology and Management Studies
- Animal Behavior and Reproduction
- Plant tissue culture and regeneration
- Animal Diversity and Health Studies
- Folate and B Vitamins Research
- Metabolism and Genetic Disorders
- Evolution and Paleontology Studies
- Marine Ecology and Invasive Species
- Wildlife Ecology and Conservation
- Parasite Biology and Host Interactions
- Transgenic Plants and Applications
- Probiotics and Fermented Foods
Goethe University Frankfurt
2012-2024
Siemens (Germany)
2024
Tennet (Germany)
2024
Chengdu Institute of Biology
2014-2018
Chinese Academy of Sciences
2014-2018
Northern Michigan University
2015
Stellenbosch University
2015
Justus-Liebig-Universität Gießen
2015
National University of Singapore
2011-2014
University of Florida
2004-2010
Plants are the main source of folate in human diets, but many fruits, tubers, and seeds poor this vitamin, deficiency is a worldwide problem. synthesize from pteridine, p -aminobenzoate (PABA), glutamate moieties. Pteridine synthesis capacity known to drop ripening tomato fruit; therefore, we countered decline by fruit-specific overexpression GTP cyclohydrolase I, first enzyme pteridine synthesis. We used synthetic gene based on mammalian because predicted escape feedback control planta ....
Biotic interchange after the connection of previously independently evolving floras and faunas is thought to be one key factors that shaped global biodiversity as we see it today. However, was not known how biotic develops over longer time periods several million years following secondary contact different biotas. Here present a novel method investigate temporal dynamics based on phylogeographical meta-analysis by calculating maximal number observed dispersal events per given uncertainty...
The accretion of the Indian subcontinent to Eurasia triggered a massive faunal and floral exchange, with Gondwanan taxa entering into Asia vice versa. traditional view on Indian–Asian collision assumes contact continental plates during Early Eocene. Many biogeographic studies rely this assumption. However, exact mode timing geological event is still under debate. Here we address, based an extensive phylogenetic analysis rhacophorid tree frogs, if there was already Paleogene link between...
Phylogenetic reconstruction, divergence time estimations and ancestral range estimation were undertaken for 66% of the Afrotropical freshwater crab fauna (Potamonautidae) based on four partial DNA loci (12S rRNA, 16S cytochrome oxidase one [COI], histone 3). The present study represents most comprehensive taxonomic sampling any family globally, explores impact paleodrainage interconnectivity cladogenesis among crabs. analyses total evidence data using maximum-likelihood (ML), maximum...
The exchange of biotas between Eurasia and North America across the Bering land bridge had a major impact on ecosystems both continents throughout Cenozoic. This has received particular attention regarding placental mammals dispersing into Americas, including humans after last glacial period, also as an explanation for disjunct distribution related seed plants in eastern Asia America. Here, we investigate bi-directional dispersal from estimates events based time-calibrated phylogenies broad...
Différentiation géographique chez le crabe d'eau douce Potamon persicum Pretzmann, 1962 (Decapoda, Potamidae) dans les monts Zagros; données de la morphométrie. Le en Iran est présent long des Alborz occidentaux, son aire répartition s'étendant vers sud-est à l'ensemble Zagros. Nous nous attendions une forte différentiation au sein entre principaux systèmes drainage région (bassins Khalij Fars-Oman, Markazi et Urmia). Pour tester cette hypothèse, avons effectué analyses classiques...
Abstract During the present study, evolutionary relationship within a clade of mountain freshwater crabs ( Potamonautes ) was examined using mtDNA sequence data for species from Cape Fold Mountain (CFM) and Great Escarpment (Drakensberg range). We undertook phylogenetic analyses, divergence time estimation, an ancestral area reconstruction to explore period cladogenesis understand biogeographic history in this high‐altitude clade. Furthermore, we applied four delimitation methods ASAP, bPTP,...
Removal of pyrophosphate from dihydroneopterin triphosphate (DHNTP) is the second step in pterin branch folate synthesis pathway. There has been controversy over whether this reaction requires a specific pyrophosphohydrolase or metal ion-dependent chemical process. The genome Lactococcus lactis multicistronic operon that includes an open reading frame (ylgG) specifying putative Nudix hydrolase. Because many enzymes are pyrophosphohydrolases, YlgG was expressed Escherichia coli and...
Cyanobacterial and plant genomes encode proteins with some similarity to the folate biopterin transporters of trypanosomatid parasite Leishmania. The Synechocystis slr0642 gene product its closest Arabidopsis homolog, At2g32040 product, are representative examples. Both have 12 probable transmembrane domains, protein has a predicted chloroplast transit peptide. When expressed in Escherichia coli pabA pabB or folE, mutants, which unable produce take up folates, modified (truncated fused N...
The faunal and floral relationship of northward-drifting India with its neighboring continents is general biogeographic interest as an important driver regional biodiversity. However, direct connectivity Southeast Asia during the Cenozoic remains largely unexplored. We investigate timing, direction mechanisms exchange between Asia, based on a molecular phylogeny, clock-derived time estimates reconstructions Asian freshwater crab family Gecarcinucidae. Although Gecarcinucidae are not element...
Abstract The brain is a plastic organ, and so intraspecific studies that compare results obtained from wild individuals with those common‐garden experiments are crucial for aiming to understand evolution. We compared volumes of regions between reproductively isolated populations neotropical fish, P oecilia mexicana , has locally adapted perpetual darkness ( C ueva L una A zufre), toxic hydrogen sulphide in surface stream E l zufre) or combination both stressors del zufre). Wild fish showed...
We report here on recent collections of freshwater crabs from Antsiranana Province, northern Madagascar. The specimens belong to three species, one which is new science and described here. This raises the number species found in Madagascar 17. All are endemic island all Afrotropical family Potamonautidae Bott, 1970. Foza manonae sp. nov., compared other this genus, an updated key provided. It distinguished congeners by characters male first gonopod, sternum, carapace, cheliped. conservation...
Abstract The Zagros Mountains, characterized by complex topography and three large drainage systems, harbor the endemic freshwater crab Potamon persicum in Iran. Our study delves into evolutionary history of P. persicum, utilizing two mitochondrial one nuclear marker. We collected 214 specimens from 24 localities, identifying 21 haplotypes grouped major lineages. Substantial differentiation exists between systems Historical demographic analysis revealed a significant decrease population size...
Summary We investigated Eurasian Skylark Alauda arvensis avoidance of powerlines and their pylons by assessing the spatial distribution territories. mapped territory centres in a central German agricultural landscape during 2020 used Bayesian logistic regression models to test if distances from are predictive presence also tested other possible predictors, namely, nearest roads, vertical structures, wind energy plants, settlements, as well pylon type vegetation. Distances road settlement...
This study asked whether reductive traits in cave organisms evolve at a slower pace (suggesting neutral evolution under relaxed selection) than constructive changes, which are likely to directional selection. We investigated 11 subterranean and seven surface populations of Sundathelphusa freshwater crabs on Bohol Island, Philippines, examined associated with improved food finding darkness (increased leg setae length) (reduced cornea size eyestalk length). All changes occurred rapidly, given...
In many species males face a higher predation risk than females because display elaborate traits that evolved under sexual selection, which may attract not only but also predators. Females are, therefore, predicted to avoid such conspicuous risk. The present study was designed investigate predator-induced changes of female mating preferences in Atlantic mollies (Poecilia mexicana). Males this show pronounced polymorphism body size and coloration, prefer large, colorful the absence...
Abstract Aim We investigate the biogeographical history of species‐rich Sundaic freshwater crab genus Parathelphusa (family Gecarcinucidae). In particular, we ask to what extent eustatic sea‐level fluctuations influenced diversification and species distribution. test prediction that in course Pleistocene glaciations increased speciation rates. Location Malay Peninsula, Greater Sunda Islands (Borneo, Java, Sumatra, Sulawesi), Bali Philippines (Palawan, Mindoro). Methods Phylogenetic inference...
Based on mitochondrial and nuclear DNA-sequence data we identify describe an evolutionary separate lineage (Potamon pelops, sp. nov.) within the potamid freshwater crab species Potamon fluviatile (Herbst, 1785). So far, nov. is only reported from Peloponnesus Peninsula (Greece), probably allopatric to P. fluviatile. This cryptic not identical with infrasubspecies natio laconis Pretzmann, 1983, latter being morphological variation of pelops. Morphologically, differs fluviatile, in...