Publications by authors named "George Otiang'a-Owiti"

Spermatogenesis in the thick-tailed bush baby, Otolemur garnetti, was studied using light microscopy. The stages and stage frequencies of the cycle of the seminiferous epithelium were determined using semithin sections stained with methylene blue-azure II. These sections were obtained from the testes of six healthy adult males (n = 6).

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We describe the gut physiology of the Lake Magadi tilapia (Alcolapia grahami), specifically those aspects associated with feeding and drinking while living in water of unusually high carbonate alkalinity (titratable base=245 mequiv l(-1)) and pH (9.85). Drinking of this highly alkaline lake water occurs at rates comparable to or higher than those seen in marine teleosts.

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Article Synopsis
  • Alcolapia grahami is a specialized tilapia that thrives in the extreme conditions of Lake Magadi in Kenya, characterized by high alkalinity and salinity.
  • The fish demonstrates unique ureotelic properties, excreting urea instead of ammonia and showing no change in urea cycle enzymes when moved to less saline water.
  • Upon acclimation to dilute lake water, the fish experiences reduced metabolic oxygen consumption and enhanced swimming performance, indicating that energy usually spent on acid-base regulation can be redirected to physical activity.
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