The evolution of virulence

Article Abstract:

The evolution of virulence of animal parasites based on the degree of dependence of parasite reproductive success on the host is discussed. A particular study on the direct life-cycle nematodes (Parasitodiplogaster spp.), each one specifically infecting one of 11 Panamanian wasp species belonging to Pegoscapus spp. or Tetrapus spp., demonstrated that the likely mode of transmission determines the correlates with parasite virulence in natural populations.

Insects, Wasps, Nematoda, Nematodes, Diseases and pests, Host-parasite relationships

---

The purple patch

Article Abstract:

Reports by Andersson and colleagues and Hunt and colleagues show that blue tits are sexually dichromatic. The Andersson report is based on the use of reflectance spectrophotometry which measured the colour of the birds' crown feathers. Sexes were shown to differ significantly in spectral shape around the ultraviolet. Hunt and colleagues measured colour for ten areas of the body, finding that spectral shape was dimorphic in half of them.

Observations, Ornithological research, Dimorphism (Animals), Dimorphism (Biology), Blue tit

---

Mosaic evolution of brain structure in mammals

Article Abstract:

Research is presented concerning an analysis of the importance of mosaic changes in the evolution of the brain. The difference in volume size of the neocortex in insectivores and mammals is discussed.

Brain, Evolution (Biology), Mammals, Letter to the Editor, Neocortex

Similar abstracts:

• Abstracts: The evolution of a hunt. Why is this dam here? Scraping bottom
• Abstracts: The evolution of multiple male traits in the yellow-browed leaf warbler. Egg rejection in a passerine bird: size does matter
• Abstracts: Fishing for function in noise. Noise in human muscle spindles. Neutralizing noise in gene networks
• Abstracts: The generation of martian floods by the melting of ground ice above dykes. Tectonics and water on Europa
• Abstracts: Three-dimensional self-assembly of millimetre-scale components. Dynamic self-assembly of magnetized, millimetre-sized objects rotating at a liquid-air interface

This website is not affiliated with document authors or copyright owners. This page is provided for informational purposes only. Unintentional errors are possible.