Effects of salinity on the survival of the Daphnia Introduction The Daphniidae daphnia is a freshwater crustacean from the branchiopod class that is common to most ponds‚ lakes‚ pools‚ streams and springs around the world. The water flea‚ as it is sometimes referred to‚ is very small in size growing to a length of less than ¼ inch‚ it has a flat back‚ a rounded belly‚ black round eyes and a pair of antennae (Kindersley‚ 2006). The Daphnia have leaf-like appendages used in respiration‚ filter
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Water and Wastewater Treatment Process in Houston CIVT 301 Outline Wastewater collection data in Houston What is sewage treatment? Where does wastewater come from? Factors that affect the flow of pipelines Industrial wastewater? Storm water/ Data The treatment plant operator Sources of wastewater Why treat wastes Waste water treatment facilities Treatment processes Drinking water What can be done to help? Wastewater collection data in Houston 640 square miles area 3
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looked at‚ my favorite is the Paramecium. Paramecium are grouped with protists because‚ like all protists‚ they’re single celled organisms. Paramecium fall under the Protozoa Phylum in the Protist Kingdom. If an organism is in the Protozoa Phylum category‚ that means it is a small microscopic organism‚ which Paramecium are as they can only be seen under a microscope‚ and it reproduces by binary fission (splitting in half‚ becoming two new organisms)‚ which Paramecium do to reproduce and “have children”
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Invertebrate Endocrinology Overview of the Endocrine System * System of ductless glands that secrete hormones * Hormones are “messenger molecules” * Circulate in the blood * Act on distant target cells * Target cells respond to the hormones for which they have receptors * The effects are dependent on the programmed response of the target cells * Hormones are just molecular triggers * Basic categories of hormones * Amino acid based: modified amino acids (or amines)
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the heart rate of daphnia. Daphnia are water fleas that have a sort of heart that we can see in magnification. We can count the number of heart beats in a minute of a regular daphnia and try and get a new one with the same specifications as the old one that may have died. It is also a good idea to get a new one as we want to see how much it affects it from ordinary instead of adding the caffeine one after another. We have to be careful not to feed too much caffeine to the daphnia only a maximum of
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of increased sludge arising from chemical precipitation of phosphorus – ferric chloride * Influent phosphorus load may be calculated at rate of 3 g/PE * Ferric chloride dosed at rate of c 1.5 moles of Fe3+ per mole of Phosphorus in wastewater * Chemical sludge production from weight of precipitate * Returned Activated Sludge (RAS) – pumping generally provided for at up to 1.5 DWF- here that is equal to half the FFT (as 3 DWF). DS content of RAS from final settlement tank design
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------------------------------------------------- Aquatic animal From Wikipedia‚ the free encyclopedia An aquatic animal is an animal‚ either vertebrate or invertebrate‚ which lives in water for most or all of its life.[1] Some examples of invertebrates are coelenterates. This phylum consists of jellyfish‚ anemones‚ corals‚ and hydras. Another type of invertebrate aquatic animal is the annelids which are segmented worms. There are three different classes they are polychaetes‚ oligochaetes‚ and
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and salt have on the Daphnia magna’s heart rate Results The effect the various drugs caffeine‚ nicotine and epinephrine had on the Daphnia magna is displayed in Figure 1. After three sample trials were taken there was an average of 180 beats/min-1 ± 6.928 taken under normal conditions. The addition of caffeine caused an increase in the average heartbeat to change to 192 beats/min-1 ± 9.165 in the Daphnia magna tested. When testing the effect of nicotine on the Daphnia magna the average heart beat
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with the drug was 132 BPM. That is a change by -84 BPM. This proves that hemp lowered the heart rate of the Daphnia‚ like the hypothesis stated. The overall average for all the groups‚ there is a similar trend with a -7% change meaning the every test had the same outcome of the heart rate decreasing. There
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Crayfish Invertebrate Research Paper Crayfish are interesting animals to study. Through invertebrate research‚ experimentation‚ and observation‚ there has been much to learn about with these animals. There is much to know about these creatures‚ including their classification in the "animal kingdom." Anatomy as well as how the crayfish reproduce is an important aspect of these organisms. Perhaps the most important part of the crayfish is there ecology. Studying ecology alone can give substantial
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