Phylogenomic studies based on hundreds of genes derived from expressed sequence tags libraries are increasingly used to reveal the phylogeny of taxa. A prerequisite for these studies is the assignment of genes into clusters of orthologous sequences. Sophisticated methods of orthology prediction are used in such analyses, but it is rarely assessed whether paralogous sequences have been erroneously grouped together as orthologous sequences after the prediction, and whether this had an impact on the phylogenetic...
Data from: Oligonucleotide primers for targeted amplification of single-copy nuclear genes in apocritan HymenopteraGerrit Hartig, Ralph S. Peters, Janus Borner, Claudia Etzbauer, Bernhard Misof & Oliver Niehuis
BACKGROUND: Published nucleotide sequence data from the mega-diverse insect order Hymenoptera (sawflies, bees, wasps, and ants) are taxonomically scattered and still inadequate for reconstructing a well-supported phylogenetic tree for the order. The analysis of comprehensive multiple gene data sets obtained via targeted PCR could provide a cost-effective solution to this problem. However, oligonucleotide primers for PCR amplification of nuclear genes across a wide range of hymenopteran species are still scarce. FINDINGS: Here we present a...
Data from: Comparative morphology and evolution of the cnidosac in Cladobranchia (Gastropoda: Heterobranchia: Nudibranchia)Jessica A. Goodheart, Sabrina Bleidißel, Dorothee Schillo, Ellen E. Strong, Daniel L. Ayres, Angelika Preisfeld, Allen G. Collins, Michael P. Cummings & Heike Wägele
Background: A number of shelled and shell-less gastropods are known to use multiple defensive mechanisms, including internally generated or externally obtained biochemically active compounds and structures. Within Nudipleura, nudibranchs within Cladobranchia possess such a special defense: the ability to sequester cnidarian nematocysts – small capsules that can inject venom into the tissues of other organisms. This ability is distributed across roughly 600 species within Cladobranchia, and many questions still remain in regard to the comparative...
Image-based automated species identification: Can virtual data augmentation overcome problems of insufficient sampling?Morris Klasen, Jonas Eberle, Dirk Ahrens & Volker Steinhage
Automated species identification and delimitation is challenging, particularly in rare and thus often scarcely sampled species, which do not allow sufficient discrimination of infraspecific versus interspecific variation. Typical problems arising from either low or exaggerated interspecific morphological differentiation are best met by automated methods of machine learning that learn efficient and effective species identification from training samples. However, limited infraspecific sampling remains a key challenge also in machine learning. In this study, we assessed whether...
Diversification rates and evolutionary trajectories are known to be influenced by phenotypic traits and the geographic history of the landscapes that organisms inhabit. One of the most conspicuous traits in butterflies is their wing color pattern, which has been shown to be important in speciation. The evolution of many taxa in the Neotropics has also been influenced by major geological events. Using a dated, species-level molecular phylogenetic hypothesis for Preponini, a colorful Neotropical butterfly tribe,...
Sexual dimorphism in an adaptive radiation: Does intersexual niche differentiation result in ecological character displacement?Benjamin D. Wasiljew, Jobst Pfaender, Benjamin Wipfler, Mariam Gabelaia, Ilham Vermandra Utama, Letha Louisiana Wantania & Fabian Herder
Evolutionary radiations are one plausible explanation for the rich biodiversity on Earth. Adaptive radiations are the most studied form of evolutionary radiations and ecological opportunity has been identified as one factor permitting them. Competition among individuals is supposedly highest in populations of conspecifics. Divergent modes of resource use might minimize trophic overlap, and thus intersexual competition, resulting in ecological character displacement between sexes. However, the role of intersexual differentiation in speciation processes is insufficiently studied....
Identification of scavenger receptors and thrombospondin type 1 repeat proteins potentially relevant for plastid recognition in SacoglossaJenny Melo Clavijo, Silja Frankenbach, Cátia Fidalgo, Joao Serôdio, Alexander Donath, Angelika Preisfeld & Gregor Christa
Functional kleptoplasty is a photosymbiotic relationship, in which photosynthetically active chloroplasts serve as an intracellular symbiont for a heterotrophic host. Among Metazoa, functional kleptoplasty is only found in marine sea slugs belonging to the Sacoglossa and recently described in rhabdocoel worms. Although functional kleptoplasty has been intensively studied in Sacoglossa, the fundamentals of the specific recognition of the chloroplasts and their subsequent incorporation are unknown. The key to ensure the initiation of any symbiosis is...
Zoological Research Museum Alexander Koenig57
China Agricultural University10
University of Freiburg8
University of Bonn6
Beijing Genomics Institute6
University of Hamburg5
University of Tsukuba4
Heidelberg Institute for Theoretical Studies3
Indonesian Institute of Sciences3
University of Vienna3