front 1 Aquatic Insects: 3% of insects are aquatic 1-2% of earth’s | back 1 freshwater and nearly all aquatic systems except the ocean |
front 2 Ponds and lakes have lots of plants but have | back 2 low oxygen content |
front 3 Streams and rivers having moving waters with | back 3 higher oxygen content |
front 4 Adaptation: Breathing organ allows dissolved oxygen to pass by diffusion under water | back 4 gills |
front 5 Adaptation: breathing outgrowths of the tracheal system covered by a thin layer of cuticle permeable to | back 5 gases |
front 6 Dragonfly Larvae Gill Abdomen of larvae dragonfly have | back 6 internal gills |
front 7 Dragonfly Larvae Gill Caudal end of alimentary tract | back 7 rectal gill |
front 8 Dragonfly Larvae Gill Water pumped into rectum provides oxygen to | back 8 closed tracheae |
front 9 Dragonfly Larvae Gill contraction of abdomen expels water and thrusts insect forward | back 9 Doubles as jet propulsion system |
front 10 Structures visible as thin, silvery films of air covering parts of body surface and involve scales or microscopic ridges projecting from cuticle | back 10 Plastron |
front 11 Plastron Capabilites: Allows aquatic insects to remain what? | back 11 constantly submerged as they most likely lack the ability to reach surface |
front 12 Diving insects carry trapped air bubbles and deplete | back 12 need replenishment |
front 13 source of air stores (trapped bubbles) | back 13 Plants can also trap air which acts as a resource for insects |
front 14 Insects can remain submerged for long | back 14 Hemoglobin in hemolymph |
front 15 respiratory pigment that facilitates binding of oxygen | back 15 Hemoglobin |
front 16 larvae of midges,bloodworms live in muddy ponds/streams where | back 16 dissolved oxygen is low |
front 17 Air from surface through breathing tubes | back 17 siphons |
front 18 Aquatic plants maintain buoyancy by storing oxygen | back 18 in vacuoles doesn't need to swim to surface with air stores |
front 19 Mosquito larvae siphon tube is | back 19 spiracle extension |
front 20 Mosquito larvae has many characterisitcs | back 20 -Live on surface on the water - dives when body surface is bothered into a ball deep into the water - Hairs have waterproof coating at the end of siphon(keeps water out) |
front 21 Adaptation Swimming: This helps dragonflies become adapted for swimming and use their abdomen with the use of? | back 21 Natatory legs |
front 22 Water striders: Have hydrofuge hair piles, elongated legs & body to have the ability to | back 22 walk on water due to high surface tension of water and their hydrophobic legs |
front 23 Mosquitoes Adaptations Can occupy temporary water for multiple reasons like | back 23 Fast development larval dormancy immediate egg-laying to the newly filled site |
front 24 Adaptation: Avoiding Predators Does Trichoptera have this adaptation to help avoid predators? | back 24 protective shell and create nets to filter food |
front 25 Insects as Bioindicators give idea of the overall biodiversity of plants and animals | back 25 Insect abundance |
front 26 water quality has become a regular practice for determining pollution insects as biomarkers | back 26 Biomonitoring |
front 27 water quality through EPT richness index formula Ephemeroptera, Plecoptera, Trichoptera sensitive to pollunants | back 27 total ept taxa/ total taxa found X 100% = %Abundance |
front 28 Ephemeroptera: Mayflies Immatures having these different charactersitics | back 28 - are aquatic # naiads - Well-oxygenated water - short-lived adults, live for years in water - Detritivores & herbivores - subimago stage:winged non reproductive form - an excellent food source for birds - Adult non feeding only mate |
front 29 Plecoptera: Stoneflies Characteristics | back 29 - naiads live in the benthic zone - obtain oxygen by exoskeleton diffusion - intolerant of pollution - an indicator of excellent water quality - emerge seasonally; spring or summer but winter stoneflies during fall and winter |
front 30 Trichoptera: Caddisflies Characterisitcs | back 30 - wings held over the abdomen - threadlike antennae - diverse order of aquatic insects - larvae build protective cases - case held together by silk secretions produced from salivary glands - Prolegs on abdominal segments hold the case in place |