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Does partial concealment influence predation attempts on small model snakes in South Africa?
Item type: Journal Article • Journal: African Journal of Herpetology • Authors: Gareth Coombs --- , South AfricaPredation risk may be high in small snakes and most small snakes are thought to avoid certain behaviours, such as basking in open areas to reduce predation risk. The extent to which this concealment limits predation during basking is not... -
A can of worms: Identification issues and morphological conservatism in a large sample of African Green and Bush Snakes (Colubridae: Philothamnus) from Minziro Forest, Tanzania
Item type: Journal Article • Journal: African Journal of Herpetology • Authors: Tejs Gørgens Nielsen --- Globe Institute, University of Copenhagen, Denmark Sofie Holdflod Nielsen --- Globe Institute, University of Copenhagen, Denmark Peter Gravlund --- Museum of Eastern Zealand, Denmark David Moyer --- The Field Museum, Illinois, USA and Iringa Anders Galatius --- Aarhus University, Denmark Morten E Allentoft --- Globe Institute, University of Copenhagen, DenmarkThe African green snakes of the genus Philothamnus include c. 21 recognised species distributed across sub-Saharan Africa. Many of the species exhibit high morphological conservatism, exist sympatrically, and can have high population densities. This is presumably the reason why the... -
Polemon barthi Jan 1858 and P. bocourti Mocquard 1897, two West African snakes which are allopatric, not sympatric
Item type: Journal Article • Journal: African Journal of Herpetology • Authors: Barry Hughes --- , UKTwo species of Polemon ‐ P. barthi and P. bocourti, are morphologically very similar and are currently supposed to both occur within the rain forest of West Africa (Guinea to Nigeria) and Central Africa (Cameroon eastward). Reliance on postocular number... -
Testing the thermal melanism hypothesis for Cape Cobras (Naja nivea) using community science photographic data
Item type: Journal Article • Journal: African Journal of Herpetology • Authors: Jody M Barends --- University of Johannesburg, South Africa Kim J Scholtz --- University of the Western Cape, South AfricaAnimal colour is a highly adaptive phenotypic trait that can respond to several selection pressures, including those facilitated by variations in climate. The thermal melanism hypothesis predicts that for ectotherms, selection for darker phenotypes should be highest in cooler areas... -
Contrasting three diet datasets for the African brown house snake, Boaedon capensis
Item type: Journal Article • Journal: African Journal of Herpetology • Authors: JM Barends --- University of Johannesburg, South Africa I Bassier --- University of the Western Cape, South Africa RA Maritz --- University of the Western Cape, South Africa B Maritz --- University of the Western Cape, South AfricaData on the dietary preferences of species can provide important information that deepens our knowledge of their evolutionary history and contemporary ecology. The combination of low detectability and irregular feeding frequency of snakes has limited the resolution of available diet... -
A comprehensive phylogeny of night adders (Causus)
Item type: Journal Article • Journal: African Journal of Herpetology • Authors: Krystal A Tolley --- University of Johannesburg, South Africa Jody M Barends --- University of Johannesburg, South Africa Eli Greenbaum --- University of Texas at El Paso, USA Werner Conradie --- Port Elizabeth Museum (Bayworld), South AfricaAfrican night adders (Causus) are an enigmatic group of viperid snakes in the subfamily Viperinae. These snakes have a suite of unusual characters atypical of other species of vipers (e.g., oviparous reproduction, round pupils) but are firmly placed within the...