This thesis examines the associations and dominance interactions of adult and subadult male Asian elephants and explores how female presence and musth affect these associations and interactions. In polygynous species, the ...

Circadian clocks enhance the chances of survival of organisms living under periodic environment by enabling them to efficiently anticipate periodic events in their environment, because precisely and appropriately timed ...

Group-living is widespread among vertebrates and is expected to provide benefits such as decreased predation, enhanced feeding success, and higher survival of young ones (for example, Holekamp et al. 1997, Clutton-Brock ...

Life forms on the earth have to experience and cope with several diurnal and annual geophysical cycles such as light and temperature. It is believed that organisms have evolved mechanisms in order to accomplish the task ...

Living organisms have evolved circadian clocks to time their physiological and behavioural activities to stay in tuned with the geophysical world. Signatures of such timing systems can be ...

The Earth rotates around its axis creating alternate day/night cycles to which almost all organisms have adapted to create for themselves a distinct spatio-temporal niche (Pittendrigh, 1993; Sharma, 2003; Dunlap et al., ...

The question of how environmental and genetic factors interact to place limits on the dynamics of biological populations has been a matter of debate throughout the 20th century (for review, see Turchin 1995; Mueller & ...

Abstract not available

Previous studies in the laboratory have shown that expression of pathogenic human Huntingtin (HTT-Q128) in circadian pacemaker neurons (ventro lateral neurons, LNv) of Drosophila, leads to immediate behavioural arrhythmicity ...

Most living organisms experience predictable variation in environmental factors due to various geophysical cycles present on the earth. Cyclic variation in the environment presents opportunities and risks to organisms at ...