Biology of Fresh Waters |
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Page 159
... U - shaped tubes with both openings at the mud surface ( figure 6.12 ) . The walls of these tubes are held together by fine silk spun by the larvae , while inside the tube each larva spins a fine silken net ADAPTATION TO ENVIRONMENT 159.
... U - shaped tubes with both openings at the mud surface ( figure 6.12 ) . The walls of these tubes are held together by fine silk spun by the larvae , while inside the tube each larva spins a fine silken net ADAPTATION TO ENVIRONMENT 159.
Page 163
... larvae which distribute themselves throughout the water body , often carrying out vertical circadian migrations , and sometimes remaining buried in the mud for part of each day . The larvae are carnivorous with well - developed ...
... larvae which distribute themselves throughout the water body , often carrying out vertical circadian migrations , and sometimes remaining buried in the mud for part of each day . The larvae are carnivorous with well - developed ...
Page 187
... larva . Many invertebrates are themselves omnivorous or carnivorous , and it is likely that the caddis larva may eat some other invertebrates ( e.g. mayfly larvae ) which feed on the Alga , or themselves be eaten by predacious stonefly ...
... larva . Many invertebrates are themselves omnivorous or carnivorous , and it is likely that the caddis larva may eat some other invertebrates ( e.g. mayfly larvae ) which feed on the Alga , or themselves be eaten by predacious stonefly ...
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Common terms and phrases
adapted adults Algae amounts Amphibia aquatic areas Bacteria basins benthic benthos biological bottom calcium carbon dioxide carnivorous catchment characteristic chemical chironomid colour communities completely concerned Crustacea density deposits depth developed dissolved solids ecological energy environment epilimnion eutrophic extremely factor feed figure fish flow forms fresh water freshwater freshwater habitats ground water growth habitats hypolimnion important increase insects invertebrates known lakes large number larvae lentic light littoral Loch lotic macrophytes mainly major marine material methods metres mg/l microhabitats mouth movement natural waters normally nutrients occur oligotrophic organic matter oxygen parasitic particles photosynthesis phytoplankton plankton plants and animals ponds production profundal Protozoa quantities reservoirs respiration river Rotifera running waters running-water systems sample sampler sediments seiche shallow silt species standing waters stratification stream substrate temperature terrestrial thermocline tropical tube types usually various vary velocity water body water surface zooplankton
References to this book
Sustainability and Management of Aquaculture and Fisheries Har Darshan Kumar No preview available - 2003 |