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Robichaud, William G; Biodiversity Research Centre, Department of Zoology, University of British Columbia; williamrobichaud@yahoo.com; Sinclair, Anthony R. E.; Biodiversity Research Centre, Department of Zoology, University of British Columbia; sinclair@zoology.ubc.ca; Odarkor-Lanquaye, Naa; Forest Sciences Centre, University of British Columbia; naalanquaye@hotmail.com; Klinkenberg, Brian; Department of Geography, University of British Columbia; brian@geog.ubc.ca. |
Swidden agriculture, or shifting cultivation, is variously viewed as a great environmental threat or a sustainable system of land use. In Laos, swidden has long been considered the primary driver of forest loss nationwide, but the assessment is based exclusively on studies from the north of country, where deforestation is most severe. National policies to control swidden have percolated down to management of one of the largest nature reserves in the region, Nakai-Nam Theun National Protected Area (NNT NPA) in the Annamite Mountains of central Laos. In NNT NPA, swidden’s presumed unsustainability and deleterious impact on forest cover is an untested assumption. We tested it by methods of historical ecology, tracing the patterns of NNT’s... |
Tipo: Peer-Reviewed Reports |
Palavras-chave: Annamite Mountains; Brou; Cuora trifasciata; Dalbergia; Deforestation; Historical ecology; Lao PDR; Manis; Nakai-Nam Theun; Nam Theun 2; Pangolin; Pseudorxy nghetinhensis; Saola; Sek; Shifting cultivation; Slash and burn; Sustainable agriculture; Swidden agriculture; Vietic. |
Ano: 2009 |
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Ofusori,D. A; Caxton-Martins,E. A; Komolafe,O. O; Oluyemi,K. A; Adeeyo,O. A; Ajayi,S. A; Oluwayinka,P. O; Adelakun,E. A; Keji,S. T; Adesanya,O. A. |
The histological and morphometric differences in some parts of the gastrointestinal tracts of rat, bat and pangolin have been well established. This investigation aims at comparatively elucidating any adaptational changes the ileum of the three mammals must have adopted to meet its dietary requirements and also cope with their morphological differences. The investigation was carried out using ten rats, ten bats and ten pangolins of both sexes. The animals were slightly anaesthetized under chloroform inhalation. The intestines were harvested and the ileum excised and fixed in 10% formol saline. The tissues were processed for light microscopic study. The following stains were employed: Haematoxylin and eosin (H & E), Van Gieson and Verhoeff's... |
Tipo: Journal article |
Palavras-chave: Pangolin; Bat; Rat; Ileum; Microanatomy; Conjuntive tissue. |
Ano: 2008 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022008000100023 |
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Abayomi,Taiwo A; Ofusori,David A; Ayoka,Oladele A; Odukoya,Samson A; Omotoso,Emmanuel O; Amegor,Frank O; Ajayi,Sunday A; Ojo,Gideon B; Oluwayinka,Oladele P. |
This study assessed the micro anatomical differences in the tongue of rat, bat and pangolin with a view to establishing the functional anatomical differences of these mammalian tongues on their dietary pattern. Ten rats, ten bats and ten pangolins were used for this study. The animals were sacrificed and the tongue excised and processed for light microscopical study adopting the following stains: Haematoxylin Eosin, Verhoeff Gieson and Masson trichrome. The results showed non papillation of the keratinized stratified epithelium of pangolin tongue unlike the papillation seen in the tongue of the rat and bat. While the filiform papillation seen in the rat was bristle like, the filiform papillae in the bat were crown-like. There was also an unusual dense... |
Tipo: Journal article |
Palavras-chave: Rat; Bat; Pangolin; Tongue; Micro-anatomy. |
Ano: 2009 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022009000400026 |
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Ofusori,D. A; Caxton-Martins,E. A. |
This study verified the comparative histomorphometric adaptations in the stomach of rat, bat and pangolin in relation to diet. Ten rats, ten bats and ten pangolins of both sexes were used for this investigation. The animals were sacrificed after slight anesthesia under chloroform inhalation. The stomach were excised, fixed in 10% formol saline and processed for light microscopic study. Stained slides were also subjected to morphometric analysis at a magnification of 400x. The results revealed that the cellular diameter/ density of parietal and zymogenic cells are significantly different in the three mammals (p<0.05) with the exception of the diameter of the zymogenic cells in pangolin which was not statistically significant (p>0.05) when compared... |
Tipo: Journal article |
Palavras-chave: Pangolin; Bat; Rat; Stomach; Histomorphometry; Connective tissue fibers. |
Ano: 2008 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022008000300026 |
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