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1. 

   Potassium maldistribution revisited

   Item type: Journal Article • Journal: Southern African Journal of Anaesthesia and Analgesia • Authors: Justine Pietersen --- Department of Anaesthesiology and Critical Care, South Africa Andrew Levin --- Department of Anaesthesiology and Critical Care, South Africa

   Objective: This study investigated the maldistribution of concentrated 15% potassium chloride after injection into one-litre, flexible, Ringer’s lactate bags.

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2. 

   Pseudo-egg and exotic egg adoption by Kelp Gulls Larus dominicanus vetula

   Item type: Journal Article • Journal: African Zoology • Authors: Minke Witteveen --- Percy FitzPatrick Institute of African Ornithology, University of Cape Town, South Africa Mark Brown --- School of Life Sciences, University of KwaZulu-Natal, South Africa Peter G Ryan --- Percy FitzPatrick Institute of African Ornithology, University of Cape Town, South Africa

   Ground-nesting birds, particularly larids, are known to include a variety of items in their nests as pseudo-eggs, as well as to adopt the eggs of conspecifics or other species. Three hypotheses have been put forward to explain this phenomenon: incubation...

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3. Interspecific aggression in flat lizards suggests poor species recognition

   Item type: Journal Article • Journal: The Journal of the Herpetological Association of Africa • Authors: Pius Korner --- ETH‐Zentrum NW, Switzerland MartinJ. Whiting --- University of the Witwatersrand, South Africa J. Willem --- University of Pretoria, South Africa H. Ferguson --- University of Pretoria, South Africa

   Mistaken identity and competitive exclusion are two alternative hypotheses proposed to explain interspecific aggression between males. We examined agonistic behaviour in males of two lizard species: Platysaurus minor and P. monotropis. In each of nine outdoor field enclosures, we maintained...

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