Now showing items 1-10 of 73
A new species and first record of the genus Triacanthella Schäffer, 1897 (Collembola, Poduromorpha, Hypogastruridae) for Africa
The first species of the genus Triacanthella to be recorded from Africa is described. Triacanthella madiba sp. n. belongs to the Southern Hemisphere group of the genus. It is morphologically closely related to T. vogeli ...
Melaleuca parvistaminea Byrnes (Myrtaceae) in South Africa: Invasion risk and feasibility of eradication
We document and assess management options for the first reported invasion of Melaleuca parvistaminea Byrnes (initially identified asM. ericifolia) in the world, in the context of a South African wetland ecosystem. Delimitation ...
The role of nest surface temperatures and the brain in influencing ant metabolic rates
(Elsevier Ltd., 2016)
Thermal limits of insects can be influenced by recent thermal history: here we used thermolimit respirometry to determine metabolic rate responses and thermal limits of the dominant meat ant, Iridomyrmex purpureus. Firstly, ...
Mechanistic models for predicting insect responses to climate change
Mechanistic models of the impacts of climate change on insects can be seen as very specific hypotheses about the connections between microclimate, ecophysiology and vital rates. These models must adequately capture ...
An assessment of a proposal to eradicate non-native fish from priority rivers in the Cape Floristic Region, South Africa
(Taylor & Francis, 2012)
Non-native fish are considered the most important threat to the survival of the indigenous freshwater fishes in the Cape Floristic Region (CFR). A pilot project to evaluate the use of the piscicide rotenone to eradicate ...
First record of the marine alien amphipod Caprella mutica (Schurin, 1935) in South Africa
We report the first discovery of the marine amphipod Caprella mutica (Schurin, 1935), commonly known as the Japanese skeleton shrimp, in South African waters. This amphipod is indigenous to north-east Asia and has invaded ...
Raising the flag on marine alien fouling species
Harbours are known introduction foci of marine alien species. They act as recipients of new introductions and as sources for regional spread. We report on subtidal surveys of fouling communities from 14 harbours along the ...
Critical thermal limits depend on methodological context
(The Royal Society, 2007-09-18)
A full-factorial study of the effects of rates of temperature change and start temperatures was undertaken for both upper and lower critical thermal limits (CTLs) using the tsetse fly, Glossina pallidipes. Results show ...
Variation in scorpion metabolic rate and rate–temperature relationships: implications for the fundamental equation of the metabolic theory of ecology
The fundamental equation of the metabolic theory of ecology (MTE) indicates that most of the variation in metabolic rate are a consequence of variation in organismal size and environmental temperature. Although evolution ...
Conservation with Caveats