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Biomedical subjects

T H Clutton-Brock

Publications and source records attributed to T H Clutton-Brock.

80 records · Page 5Linked to original sources
PubMed1976

Ranks and relationships in Highland ponies and Highland Cows.

Recent studies of primates have questioned the importance of dominance hierarchies in groups living under natural conditions. In a herd of Highland ponies and one of Highland cattle grazing under free-range conditions on the Isle of Rhum (Inner Hebrides) well defined hierarchies were present. The provision of food produced a marked increase in the frequency of agonistic interactions but had no effect on the rank systems of the two herds. While rank was clearly important in affecting the distribution of agonistic interactions, it was poorly related to behaviour in non-agonistic situations.

Agonistic Behavior↗
PubMed1975

Ranging behaviour of red colobus (Colobus badius tephrosceles) in the Gombe National Park.

The ranging behaviour of one troop of red colobus in the Gombe National Park is described. The troop moved about its range in a semi-regular fashion, spending much more time in some areas than in others. The distribution of its time was closely correlated with the joint distribution of the three tree species on which the animals fed most. At the time of year when they fed most on shoots and flowers (as opposed to mature leaves) the animals moved furthest each day, visited the greatest number of different areas, distributed their time most evenly across the range and moved around it in the shortest period.

Animals↗
PubMed1975

Feeding behaviour of red colobus and black and white colobus in East Africa.

The feeding behaviour of one troop of red colobus (Colobus badius tephrosceles) was observed between August 1969 and June 1970 in the Gombe National Park. Similar observations were made on two troops of red colobus and two of black and white colobus (C. guereza uellensis) in Kibale Forest Reserve, Uganda, between August and October 1970. The red colobus at Gombe were highly selective in their choice of food, feeding on the leaves, shoots, flowers and fruit of a wide variety of tree species. The animals appeared to choose a varied diet, eating different foods in different feeding bouts on the same day. The amount of time which they spent feeding on different foods varied seasonally, usually in association with changes in food availability. Different parts of the animals' range provided them with different kinds of food. The feeding behaviour of the red colobus troops at Kibale was similar to that of the Bombe troop. In contrast, black and white colobus at Kibale fed almost exclusively on mature leaves during at least one period of the year and fed largely on two tree species only. These differences in feeding behaviour may explain why red colobus live in large troops in large ranges whiel black and white colobus live in small troops in small ranges.

Animals↗
PubMedDate not supplied

Continuous measurement of blood gases using a combined electrochemical and spectrophotometric sensor.

The use of a combined electrochemical and fibreoptic continuous intra-arterial blood gas sensor is described. The purpose of the study was to evaluate the performance of the sensor in 10 patients in the intensive therapy unit following insertion through a femoral arterial cannula. To our knowledge this is the first published study on the valuation of an intravascular blood gas sensor through a femoral arterial cannula. A total of 71 sets of data comparing the sensor with the blood gas analyser were obtained. The bias and precision for pH, PCO2 and PO2 were 0.006 and 0.07 pH units, 0.2 and 1.65 kPa (4.6% and 29%) and 0.8 and 2.7 kPa (5.1% and 14.3%) respectively. There was a degree of imprecision of the PCO2 sensor, the reasons for which are discussed. In summary, the intra-arterial sensor functioned well when inserted into the femoral artery in post-cardiopulmonary bypass patients. There were no complications attributable to sensor placement.

Blood Gas Analysis↗
PubMedDate not supplied

Adult cardiac anaesthesia.

The widespread increase in adult cardiac surgery over the last decade has meant that many more junior anaesthetists have become involved in the management of anaesthesia for cardiac surgery before they have taken the final part of the FRCA examination. Although cardiac anaesthesia is still a specialized area, FRCA candidates are expected to have a working knowledge of the principles involved.

Adult↗