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Aquatic Insect
| Question | Answer |
|---|---|
| Phreatic | Groundwater zone with no surface for water exchange |
| Chaoborous | Special air sacs that insects can manipulate to move around |
| Hydrofuge Hairs | Water repelling hairs that help insects walk on water |
| Reynolds Number | Ratio of inertia (movement) to viscous forces (water flow) |
| Pressure Drag | Seperation of flow around an object. Most important to insects with high Re |
| Fusiform | Torpedo Shape |
| Diffusion Gradient | Differences in gas concentrations across membranes |
| Polypneustic | Open tracheal system that has at least 3 pairs of functional spiracles |
| Oligopneustic | Open tracheal system that has at least 2 spiracles |
| Apneustic | Closed tracheal system with gills |
| Open Tracheal System | Tracheal system that exchanges gas directly with the air (air is always in gaseous form) |
| Plastrons | Permanent bubble held by hydrofuge hairs at constant volume (no N2 lost) |
| Spiracular Gills | Plastron-like extension of the spherical or body wall |
| Cutaneous Respiration | respiration in which gas exchange occurs across the skin or outer integument of an organism rather than the gills or lungs |
| Blood-based Gas Exchange | Adaptation to anoxic conditions where O2 binds to protein in the respiratory pigment to breathe |
| Heat Shock Proteins (HSP) | Proteins that prevent high temperatures from denaturing cells |
| Freeze Tolerance | Ability for insects to survive freezing temperatures |
| Chemoreception | Reception of molecules. Often used for detection of food quality, water chemistry, presence of predators and mating |
| Chordontal | Strand of tissue stretched between cells that can detect vibration and sound waves |
| Trichoid Cuticular Structure | hair-based cuticular structure used for detection of water movement and pressure waves |
| Campaniform Cuticular Structure | membrane dome based cuticular structure used for direct pressure, joints and mouthparts |
| Mechanoreception | Any type of environmental distortion that can be perceived by aquatic insects for communication |
| Stemmata | Rudimentary detection organ that can orient to light and see simple patters and movement. Used in holometabolous species (larvae) |
| Ocelli | Visual sensors found on dorsal part of insect head, typically consisting of 3 elementary eyes that can detect light levels and are involved in stabilization. Found in hemimetabolous species |
| Non-seasonal Life History | insects that have multiple life stages a year. Multiple cohorts are available at any given time. Common in stable and disturbed environments. |
| Aestivation | Summer dormancy |
| Quiesence | Period of reduced activity |
| Diapause | Period of suspended growth and development |
| Fast Seasonal Life History | Rapid life cycle (days to weeks) that is univoltine and often involves a dormancy period. Can happen any season, and is an adaptation to drying |
| Slow Seasonal Life History | Development that is completed over several seasons. Follows same pattern (eggs hatch in spring) |
| exarate | wings and legs move freely |
Created by:
SkylerG