A5033750963- Spider Taxonomy and Behavior Studies
- Animal Behavior and Reproduction
- Lepidoptera: Biology and Taxonomy
- Insect and Arachnid Ecology and Behavior
- Animal and Plant Science Education
- Coleoptera Taxonomy and Distribution
- Genetic diversity and population structure
- Plant and animal studies
- Hymenoptera taxonomy and phylogeny
- Misinformation and Its Impacts
- Amphibian and Reptile Biology
- Fossil Insects in Amber
- Species Distribution and Climate Change
- Insect-Plant Interactions and Control
Universität Greifswald
2019-2025
Zoological Institute
2021
Abstract Mass media plays an important role in the construction and circulation of risk perception associated with animals. Widely feared groups such as spiders frequently end up spotlight traditional social media. We compiled expert-curated global database on online newspaper coverage human-spider encounters over past ten years (2010–2020). This includes information about location each encounter reported news article a quantitative characterisation content—location, presence photographs...
Abstract Sperm transfer in spiders is achieved by copulatory organs on the male pedipalps (i.e., bulbs), which can be simple or a complex set of sclerites and membranes. During copulation, these used to anchor corresponding structures female genitalia means hydraulic pressure. In most diverse group Entelegynae spiders, retrolateral tibial apophysis clade, role coupling considered rather passive, as conformational changes genital plate epigyne) during copulation are scarce. Here, we...
Spiders evolved a distinctive sperm transfer system, with the male copulatory organs located on tarsus of pedipalps. In entelegyne spiders, these are usually very complex and consist various sclerites that not only allow themselves but also provide mechanical interlock between female genitalia. This interlocking can involve elements part organ such as retrolateral tibial apophysis (RTA)-a characteristic most diverse group spiders (RTA clade). The RTA is frequently used for primary locking...
Sexual selection has been considered to promote diversification and speciation. Sexually dimorphic species have used explore the supposed effect, however, with mixed results. In dwarf spiders (Erigoninae), many are sexually dimorphic-males possess marked prosomal modifications. These male traits vary from moderate elevations bizarre shapes in various regions. Previous studies established that produce substances these modifications taken up by females. can act as nuptial gifts, which increase...
Abstract Sexual selection has been shown to drive speciation. In dwarf spiders (erigonines), males possess diverse, sexually selected prosomal structures with nuptial-gift-producing glands. The genus Oedothorax is suitable for investigating the evolution of these features due high structural variation. We have re-delimited this based on a phylogenetic analysis. Ten species are s.s.; five transferred back their original generic placement; 25 remain unplaced as ‘Oedothorax’. Four junior...
Armatures of the male intromittent copulatory structures have been surmised to increase fitness by imposing physiological costs on female re-mating. Female kicking could, consequently, be a counterstrategy avoid wounding or prevent males from mating. The membranous endophallus Acanthoscelides obtectus (Say, 1831) is armed with denticles. Checking if these denticles penetrate wall genital tract during copulation revealed that only tip median lobe aedeagus intromitted into opening copulation....
Abstract In the Internet era, digital architecture that keeps us connected and informed may collaterally amplify spread of misinformation falsehood1,2. The magnitude this problem is gaining global relevance3, as evidence accumulates interferes with democratic processes undermines collective responses to environmental health crises4,5. Therefore, understanding how generates spreads becoming a pressing scientific, societal, political challenge3. Advances in area are delayed because...
Abstract Sexual dimorphism can evolve under sexual selection or ecological factors. Sexually dimorphic male prosomal modifications are associated with gustatorial courtship in erigonines. The vary from moderate elevations to bizarre shapes. Males transfer substances these structures females, which affect mate acceptance and fecundity. Here, we explore lability of traits by investigating if modified prosomata inherently linked secretory glands, glands evolved prior modifications, the...
Abstract BackgroundSexual selection has been considered to promote diversification and speciation. Sexually dimorphic species have used explore the supposed effect, however, with mixed results. In dwarf spiders (Erigoninae), many are sexually - males possess marked prosomal modifications. These male traits vary from moderate elevation bizarre shapes in various regions. Previous studies established that produce substances these modifications taken up by female. Since transfer of increases...