A5068306071- Physiological and biochemical adaptations
- Neurobiology and Insect Physiology Research
- Insect and Arachnid Ecology and Behavior
- Insect and Pesticide Research
- Fish Ecology and Management Studies
- Plant and animal studies
- Animal Behavior and Reproduction
- Neuroscience of respiration and sleep
- Insect Pheromone Research and Control
- Aquaculture disease management and microbiota
- Animal Ecology and Behavior Studies
- Fish Biology and Ecology Studies
- Insect Pest Control Strategies
- High Altitude and Hypoxia
- Environmental Toxicology and Ecotoxicology
- Mosquito-borne diseases and control
- Entomopathogenic Microorganisms in Pest Control
- Ecology and Vegetation Dynamics Studies
- Hemoglobin structure and function
- Hemiptera Insect Studies
- Potato Plant Research
- Plant responses to elevated CO2
- Water Quality Monitoring Technologies
- Archaeology and ancient environmental studies
- Isotope Analysis in Ecology
Humboldt-Universität zu Berlin
2007-2021
Bernstein Center for Computational Neuroscience Berlin
2021
Humboldt State University
2007
Charité - Universitätsmedizin Berlin
2006
Friedrich-Alexander-Universität Erlangen-Nürnberg
1994
Argyroneta aquatica is a unique air-breathing spider that lives virtually its entire life under freshwater. It creates dome-shaped web between aquatic plants and fills the diving bell with air carried from surface. The can take up dissolved O(2) water, acting as 'physical gill'. By measuring volume partial pressure (P(O(2))) tiny O(2)-sensitive optodes, this study showed spiders produce physical gills capable of satisfying at least their resting requirements for most extreme conditions warm...
The evolution of discontinuous gas exchange (DGE) in insects is highly controversial. Adaptive hypotheses which have obtained experimental support include a water savings mechanism for living dry environments (hygric hypothesis), reduction oxidative damage due to high-performance oxygen delivery system (oxidative and the need steep intratracheal partial pressure gradients gases under hypercapnic and/or hypoxic conditions potentially encountered subterranean (chthonic hypothesis). However,...
Endothermic insects like honeybees and some wasps have to cope with an enormous heat loss during foraging because of their small body size in comparison endotherms mammals birds. The costs thermoregulation call for optimisation. Honeybees differ critical thermal maximum, which enables the bees kill by heat. We here demonstrate benefits a combined use temperature measurement infrared thermography, respiratory measurements energy turnover (O(2) consumption or CO(2) production via flow-through...
(Orgeig and Daniels) This surfactant symposium reflects the integrative multidisciplinary aims of 1st ICRB, by encompassing in vitro vivo research, studies vertebrates invertebrates, research across multiple disciplines. We explore physical structural challenges that face gas exchange surfaces insects, focusing on role system. Pulmonary is a complex mixture lipids proteins lines air-liquid interface lungs all air-breathing vertebrates, where it functions to vary surface tension with changing...
While biochemical mechanisms are typically used by animals to reduce oxidative damage, insects suspected employ a higher organizational level, discontinuous gas exchange mechanism do so. Using combination of real-time, flow-through respirometry and live-cell fluorescence microscopy, we show that spiracular control associated with the cycle (DGC) in Samia cynthia pupae is related reactive oxygen species (ROS). Hyperoxia fails increase mean ROS production, although minima elevated above...
Gas exchange dynamics in insects is of fundamental importance to understanding evolved variation breathing patterns, such as discontinuous gas cycles (DGCs). Most do not rely solely on diffusion for the respiratory gases but may also make use movements (active ventilation) supplement at rest. However, their temporal have been widely investigated. Here, intratracheal pressure, V(CO2) and body desert locust Schistocerca gregaria were measured simultaneously during DGC revealed several...
We describe for the first time changes in rate of CO2 release (as a surrogate metabolic rate) terminal larval stage insect Rhodnius prolixus following blood meal and during molt leading to adult stage. These data are presented on whole‐animal basis as well per gram wet dry weight. have also used techniques that allow us actual body tissue (i.e., removing weight remaining bloodmeal gut metabolically inactive portion cuticle). While whole animal rises approximately 10‐fold 15 d feeding, mass...
Abstract Specialized anglers of Common Carp Cyprinus carpio in Europe and increasingly North America usually release trophy‐sized fish, often following retention carp sacks, to facilitate photographic memories. This practice is associated with extended air exposure. We assessed the impact exposure for a period 10 min after capture an additional 9 h sacks on physiology small at two water temperatures (12°C 22°C) under laboratory conditions. In complementary field experiment large carp, we...
In the context of aridification in Mediterranean regions, desiccation resistance and physiological plasticity will be key traits for persistence aquatic insects exposed to increasing stress. Control cuticular transpiration through changes quantity composition epicuticular hydrocarbons (CHCs) is one main mechanisms insects, but it remains largely unexplored ones. We studied acclimation responses adults two endemic water beetles from distant lineages living intermittent saline streams:...
The river bug Aphelocheirus aestivalis is a 40 mg aquatic insect that, as an adult, relies totally on incompressible physical gill to exchange respiratory gases with the water. (called ‘plastron’) consists of stationary layer air held in place body surface by millions tiny hairs that support permanent air-water interface, so never has renew gas at water's surface. volume plastron extremely small (0.14 mm3), under slightly negative pressure, and connected gas-filled tracheal system through...