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A Note on Rot-Holes in Horse-Chestnut Trees
- T. T. Macan, T. G. Tutin
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- Journal:
- Parasitology / Volume 24 / Issue 2 / June 1932
- Published online by Cambridge University Press:
- 06 April 2009, p. 283
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- Article
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In 1927 Keilin described the fauna of a rot-hole and a slime-flux in a horse-chestnut tree (Aesculus hippocastanum) standing on the Downing site, Cambridge. For several consecutive years prior to 1927 he took there the larvae of the mosquito Orthopodomyia pulchripalpis Rondani (described as 0. albionensis by MacGregor), this being only the second record for Britain. In 1926 the chestnut tree was cut down and the part of the trunk containing the rot-hole was placed standing on the ground close to the Molteno Institute on its south side. As the rot-hole, after a time, ceased to be water-tight, its bottom was cemented and the “reservoir” kept filled with water. (For further details see Keilin in this issue, p. 280.) Three to four weeks later larvae of Orthopodomyia were found in the reservoir. It was not clear how this recolonisation had taken place as no other breeding place was known in the vicinity.
10 - Genetic studies of western gorillas
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- By Stephen L. Clifford, Centre International de Recherches Médicales Franceville (CIRMF), BP 769 Franceville, Gabon, Kate A. Abernethy, Department of Molecular and Biological Sciences, University of Stirling, Stirling FK9 4LA, U.K., Lee J. T. White, Wildlife Conservation Society, 2300 Southern Boulevard, Bronx, NY 10460, U.S.A., Caroline E. G. Tutin, Centre International de Recherches Médicales Franceville (CIRMF), BP 769 Franceville, Gabon, Mike W. Bruford, Cardiff School of Biosciences, Cardiff University, Cardiff CF1 3TL, U.K., E. Jean Wickings, Centre International de Recherches Médicales Franceville (CIRMF), BP 769 Franceville, Gabon
- Edited by Andrea B. Taylor, Duke University, North Carolina, Michele L. Goldsmith, Tufts University, Massachusetts
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- Book:
- Gorilla Biology
- Published online:
- 11 August 2009
- Print publication:
- 05 December 2002, pp 269-292
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Summary
Introduction
Classification
The science of systematics is used to establish evolutionary relationships among species and until the 1960s was based almost entirely on morphological data (Moritz, 1995). The morphological evidence for separating the gorilla into the three subspecies currently recognized, Gorilla gorilla gorilla (western lowland gorilla), Gorilla gorilla graueri (eastern lowland gorilla), and Gorilla gorilla beringei (mountain gorilla), was compiled in the 1960s and recognizes significant differences in cranial and postcranial features (Schaller, 1963; Groves, 1970; Groves and Stott, 1979). At the present time, these three subspecies have distinct geographical distributions, with the western subspecies separated from the eastern and mountain subspecies by more than 1000 km. The western lowland gorilla is found in Gabon, Cameroon, Nigeria, Equatorial Guinea, Congo and the Central African Republic (Lee et al., 1988). Groves (1967) proposed four “demes” within the western lowland gorilla range based on clinal variations in skull size. These roughly correspond to: (1) gorillas from the valley of the Sangha River in Central African Republic, Cameroon, and northern Congo, (2) gorillas from Nigeria, (3) gorillas from the southern Cameroon including populations from Dja, and (4) gorillas from coastal and central Gabon and southern Congo. Fig. 10.1 illustrates the current distribution of gorilla populations. More recently Oates et al. (1999) have suggested that gorilla populations north of the Sanaga River are morphologically distinct, in accordance to Groves's observations.