Home About Browse Search
Svenska


Adolfsson, Ulrika, 2009. Diurnal behaviour and utilization of shade in Masai giraffes (Giraffa camelopardalis tippelskirchi). SLU, Dept. of Animal Environment and Health, Uppsala. Uppsala: SLU, Dept. of Animal Environment and Health

[img]
Preview
PDF
109kB

Abstract

Observations were carried out in the Masai Mara National Reserve in southwestern
Kenya, which is the northern part of the Mara-Serengeti ecosystem in
Kenya and Tanzania. Activity and behaviour of Masai giraffes (Giraffa
camelopardalis tippelskirchi) was recorded with one-minute intervals for
continuous periods of approximately twelve hours per day for two weeks in
February and March 2007. The total observation time was 200 hours in females,
116 hours in males and 99 hours in offspring. The aim of the study was to
investigate diurnal behaviour of the Masai giraffe and in particular their use of
shade.

Adult giraffes in my study spent more than a third of their daytime
foraging. The male giraffes in the study spent about the same time foraging as the
females. The giraffes showed a peak of foraging in the late afternoon. Standing
was observed mostly in the first half of the day. Lying was observed almost
exclusively in offspring, mainly in early afternoon.

The giraffes did not use the shade in a very great extent neither for
standing nor foraging. When they did use the shade it was during the hottest hours
after noon. I suggest that giraffes save energy by minimizing energy-consuming
activities at the most demanding hours of the day in favour of less energyconsuming
activities such as standing. The use of shadow in my study was much
lower than in other animals in the study area, e.g. wildebeest and zebra.

,

Studien utfördes i sydvästra Kenya, i nationalparken Masai Mara. Parken utgör
den norra fortsättningen av Serengetis ekosystem i Tanzania. Studiens syfte var att
undersöka Masai giraffens (Giraffa camelopardalis tippelskirchi) dygnsrytm och
dess nyttjande av skugga. Giraffernas beteende antecknades en gång per minut,
under vanligtvis cirka 12 timmar per dag under två veckors tid i februari och mars
2007. Det totala antalet observationstimmar för honor var 200, respektive 115
timmar för hanar samt 99 timmar för avkomman.
Födosök var den dominerande sysselsättningen, vilket hos vuxna
giraffer upptog mer än en tredjedel av deras tid och det fanns inga skillnader
mellan hanar och honor. På eftermiddagarna sågs en tydlig ökning i andelen tid
som lades på födosök. Girafferna använde inte skuggan i någon större
utsträckning. När de väl gjorde detta var det under timmarna mitt på dagen när
temperaturen är som högst. Det var tydligt att girafferna sparade energi mitt på
dagen genom att vila. Giraffernas nyttjande av skugga var avsevärt lägre jämfört
med andra djur i samma område, ex. gnu och zebra.

Main title:Diurnal behaviour and utilization of shade in Masai giraffes (Giraffa camelopardalis tippelskirchi)
Authors:Adolfsson, Ulrika
Supervisor:Jung, Jens
Examiner:UNSPECIFIED
Series:Examensarbete / Sveriges lantbruksuniversitet, Fakulteten för veterinärmedicin och husdjursvetenskap, Veterinärprogrammet
Volume/Sequential designation:2009:1
Year of Publication:2009
Level and depth descriptor:Other
Student's programme affiliation:3050A Veterinary Medicine Programme (admitted before July 1, 2007) 330 HEC
Department:(VH) > Dept. of Animal Environment and Health
Keywords:giraffe, shade, diurnal behaviour, Masai Mara
URN:NBN:urn:nbn:se:slu:epsilon-s-7989
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-s-7989
Subjects:SLU > (VH) > Dept. of Animal Environment and Health
Animal ecology
Language:English
Deposited On:18 Oct 2017 11:25
Metadata Last Modified:18 Oct 2017 11:25

Repository Staff Only: item control page

Downloads

Downloads per year (since September 2012)

View more statistics

Downloads
Hits