Chad Keates

Chad Keates
Rhodes University | RU · Department of Zoology and Entomology

PhD Zoology

About

13
Publications
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Introduction
Chad Keates currently works at the Department of Zoology and Entomology, Rhodes University. Chad is an herpetologist working on the systematics and evolutionary history of African herpetofauna using both molecular and morphological techniques.

Publications

Publications (13)
Article
Full-text available
African Shovel-snout snakes ( Prosymna Gray, 1849) are small, semi-fossorial snakes with a unique compressed and beak-like snout. Prosymna occur mainly in the savanna of sub-Saharan Africa. Of the 16 currently recognised species, four occur in Angola: Prosymna ambigua Bocage, 1873, P. angolensis Boulenger, 1915, P. frontalis (Peters, 1867), and P....
Article
Full-text available
Lycodonomorphus is a genus of lamprophiid water snake endemic in Africa. Although widespread, abundant and presumably an important component of many aquatic and semi-aquatic food webs, these snakes are poorly understood taxonomically, particularly from a phylogenetic perspective. With only four of the nine species currently sequenced, this study at...
Article
Here we provide the first phylogenetic analysis that include Afrogecko ansorgii and a detailed morphological comparison with other species of leaf-toed geckos. For this purpose, we used two mitochondrial (16S, ND2) and four nuclear (RAG1, RAG2, CMOS, PDC) genes to produce a robust phylogenetic reconstruction. This allowed us to show that A. ansorgi...
Article
Full-text available
A new species of red toad, from the previously monotypic genus Schismaderma, is described. The new species was found in Malanje Province, and seems endemic to central Angola, occurring approximately 500 km west of the closest known records of Schismaderma carens. Unusual adult colouration and geographical distance to remaining S. carens populations...
Article
Full-text available
The herpetofauna of Angola has been neglected for many years, but recent surveys have revealed previously unknown diversity and a consequent increase in the number of species recorded for the country. Most historical surveys focused on the north-eastern and south-western parts of the country, while mostly neglecting the central and south-eastern pa...
Chapter
Full-text available
This chapter introduces and synthesizes food web dynamics within tropical and subtropical wetlands, considering a range of organisms at different trophic levels, hydrological characteristics, and wetland types. The relationship between hydroperiod and trophic dynamics is appraised considering both endorheic wetlands and those periodically connected...
Article
Full-text available
Range-restricted species are generally poorly known and at higher risk of extinction than species with wider distributions. In the past, the Coastal Leaf-toed Gecko, Cryptactites peringueyi (Boulenger, 1910) caused much confusion and was once referred to as “one of the herpetological mysteries of the region”. Knowledge on the species has grown subs...
Article
Kassinula is a monotypic genus of small frog in the family Hyperoliidae, only represented by Kassinula wittei. This species morphologically resembles both Kassina Girard, 1853 and Afrixalus Laurent, 1944, and its taxonomic status has been debated for decades. It has previously been subsumed within Kassina, and is currently placed as a sister genus...
Article
The African natricine genus Limnophis is represented by two species: Limnophis bicolor Günther, 1865 and Limnophis bangweolicus (Mertens, 1936). They are stout-bodied, semi-aquatic snakes that mostly feed on fish and amphibians, and occur from Botswana and Namibia in the south throughout most of Zambia and Angola to the Democratic Republic of the C...
Article
Psammophylax (Fitzinger 1843) is a widespread yet poorly studied genus of African grass snakes. A genetic phylogeny of six of the seven species was estimated using multiple phylogenetic and distance‐based methods. To support the genetic analyses, we conducted morphological analyses on the body (traditional morphology) and head (geometric morphometr...
Article
Full-text available
Two rare and endemic psammophines (Serpentes: Psammophiinae) occur in Angola. The taxonomic status of Psammophylax rhombeatus ocellatus Bocage, 1873 and Psammophis ansorgii Boulenger, 1905 have long remained problematic, with both having varied past and present taxonomic assignments, and whose distributions may therefore present zoogeographic anoma...

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Projects

Projects (3)
Project
To unravel the systematic relationships of all the species within the genus, using both molecular and morphological techniques.
Project
Produce a full scientific review of the species, highlighting the genetic structuring within the species in relation to the environments in which different populations are found.
Project
Then Port Elizabeth Museum have actively been working on the Herpetofauna of Angola and have been part of numerous multi-collaborative expedition to southwestern, southeastern, central and northeastern Angola since 2009. Our goal is to document new species discoveries and too produce annotated checklists to the herpetofauna of Angola.