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Sex‐Based Differences and Similarities in Locomotor Performance, Thermal Preferences, and Escape Behaviour in the Lizard Platysaurus intermedius wilhelmi
Differences between sexes in physiological performance have received little attention in animals. We tested for sex differences in maximum sprint speed and maximal exertion over a range ofExpand
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The effect of temperature on digestive and assimilation efficiency, gut passage time and appetite in an ambush foraging lizard, Cordylus melanotus melanotus
In ectotherms, an increase in body temperature increases metabolic rate and may increase rates of digestive processes. We measured the thermal dependence of the apparent digestive and apparentExpand
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guide to the reptiles of Southern Africa
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Xenopus laevis embryos and tadpoles as models for testing for pollution by zinc, copper, lead and cadmium
The toxicity of bio available Zn, Cu, Pb, and Cd on the life stages of Xenopus laevis embryos and tadpoles was investigated. Cu and Cd were found to affect the hatching success of the embryos, with aExpand
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Geographic sampling bias in the South African Frog Atlas Project: implications for conservation planning
Quality conservation planning requires quality input data. However, the broad scale sampling strategies typically employed to obtain primary species distribution data are prone to geographic bias inExpand
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Detection of hepatitis B virus DNA in spermatozoa, urine, saliva and leucocytes, of chronic HBsAg carriers. A lack of relationship with serum markers of replication.
Urine, saliva and semen from 18 chronic HBsAg carriers, material that might be concerned in the transmission of hepatitis B virus infection, was examined for the presence of HBV-DNA using molecularExpand
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Lower temperature tolerance in the temperate, ambush foraging lizard Pseudocordylus melanotus melanotus
Abstract 1. An organism's thermal tolerance to the environment may indicate a thermal limit to its geographical distribution. 2. We measured the lower critical minimum (CTMin) and lower lethalExpand
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Methods to detect species range size change from biological atlas data: A comparison using the South African Frog Atlas Project
Abstract Comparing historical species distribution data with recent biological surveys has the potential to quantify changes to species geographic ranges, and to detect declining species. The primaryExpand
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Extrahepatic secreted complement C3 contributes to circulating C3 levels in humans.
The majority of complement protein C3 is synthesized by the liver, but many other cell types produce small amounts of functionally active C3. The overall contribution of such extrahepatic C3Expand
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Color patterns and species recognition in four closely related species of Lake Malawi cichlid
We examined interspecific female mating preferences in four closely related species of cichlid belonging to the Pseudotropheus zebra species complex of Lake Malawi. These species differ in colorationExpand
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