WebJan 30, 2007 · The presence of urea transporters in fish that produce a copious amount of urea, such as elasmobranchs and ureotelic teleosts, is reasonable. However, the existence of urea transporters in ammoniotelic fish is curious and could likely be due to their ability to manufacture urea early in life as a means to avoid ammonia toxicity. WebJun 1, 2009 · SUMMARY. The diversity of mechanisms of ammonia and urea excretion by the gills and other epithelia of aquatic organisms, especially fish and crustaceans, has been studied for decades. Although the decades-old dogma of `aquatic species excrete ammonia' still explains nitrogenous waste excretion for many species,it is clear that there are many …
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WebDec 17, 2008 · Fish called Candiru or Carnero is attracted by urine smell (urea and ammonia) and it can insert it self into the penis or vagina while … WebDec 20, 2013 · However, gill urea contents determined in the present study was approximately 0.7 µmol/g in 20% brackish water-treated fish suggesting that this increase in tissue urea concentration only has a ... grace near rennala
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Web6.0 Introduction . 1. Fertilizers are natural or synthetic substances that are used in ponds to increase the production of the natural food organisms to be eaten by the fish. These organisms include phytoplankton*, … WebDec 4, 2024 · In aquaculture, the two most commonly used commercial fertilizers are urea and triple superphosphate. They commonly are applied at rates of 5 to 10 kg N and P 2 O 5 per hectare per application. In order to maintain adequate concentrations, fertilizers are applied at intervals of two to four weeks. WebAdditionally, the claim about the candiru being attracted to urine was contested by researchers in 2001, as evidence indicates that the candiru hunt by sight and not smell. As such, urinating in... grace nehrebecki clifton nj