Otter (Lutrinae) Care Manual - Association of Zoos and Aquariums

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Association of Zoos and Aquariums 146 Otter (Lutrinae) Care Manual Drawbacks: - Need to buy, handle and store toxic chemicals such as sodium hypochlorite and muriatic acid. - Exposes animals and workers directly to potentially caustic substances. Chlorine Removal: Chlorine can be used, if necessary, when the otters are not present. Chlorine is a volatile chemical and sufficient aeration can lower levels dramatically in twenty four hours. In situations where time is an issue, sodium thiosulfate can be added and run through the system for an hour before the otters are allowed access again. To remove chlorine with sodium thiosulfate: Amount Sodium Thiosulfate (grams) = aquarium volume (gal) x 0.0038 x [7 x tested chlorine level (mg/l)] Example: Problem: 20,000 gallon tank. Chlorine test results show 0.5mg/l of chlorine in the system following water change and refill. To remove the chlorine you will need ____ grams of sodium thiosulfate. Solution: 20,000 x 0.0038 x (7 x 0.5) = 266 grams Sodium Thiosulfate
Part 4: SKIMMER BOXES Association of Zoos and Aquariums 147 Otter (Lutrinae) Care Manual All skimmer boxes should be protected with appropriate screening to prevent live animals from getting trapped, though this should not be a concern with healthy animals. Screening also prevents foreign objects from harming pumps. A skimmer box can be placed outside the exhibit tank or inside There are commercially available skimmers typically found in pond and swimming pool supply houses, but they are usually too small for most large otter exhibits so chances are skimmer boxes must be fabricated by the installer. Ideally, the pool should have outflows at three points: A drain from its lowest point A midlevel drain A skimmer box drain Skimmers should be mandatory, especially in outdoor pools. They aid in the removal of floating organic material (leaves, twigs, etc.) most commonly associated with such pools.
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Otter (Lutrinae) Care Manual Create
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Association of Zoos and Aquariums 3
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2.1 Space and Complexity Careful co
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3.1 Preparations Animal transportat
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Table 3: Target dietary nutrient ra
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• 182g Dallas Crown Carnivore Die
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of placement for all but the giant
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supervisors, their Institutional An
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Table 8: Common causes of deaths in
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Behavior Verbal cue Visual cue Crit
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10.1 Known Methodologies AZA believ
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Otter (Lutrinae) Care Manual - Association of Zoos and Aquariums

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