scholarly journals Estimating exposed pulp lengths of tusks in the African elephant (Loxodonta africana africana) : article

Author(s):  
G. Steenkamp ◽  
W.H. Ferguson ◽  
S.C. Boy ◽  
S.M. Ferreira ◽  
M.N. Bester

Captive and wild African elephants frequently suffer tusk fractures. Several institutions shorten the tusks of captive elephants to reduce fractures and injury as a result of behaviour within enclosures. Fracturing or coronal amputations that expose pulp lead to pain for the elephant. Estimating coronal pulp lengths may thus help to minimise the risk of pulp exposure during amputations. We aimed to determine the length of the pulp beyond the lip margin from an external tusk characteristic. Tusks collected from elephants in Namibia and the Kruger National Park had similar morphological relationships. This statistical property allowed us to correct for missing data in our data sets. Pulp volume and pulp length correlated with tusk circumference at the lip. Even so, the circumference at the lip could not predict the length of the pulp in the crown external to the lip. Our findings suggest that tusks, irrespective of sex or age, amputated further than 300 mm from the lip should not expose pulp.

Koedoe ◽  
1984 ◽  
Vol 27 (1) ◽  
Author(s):  
L.E.O Braack

First described in 1869, this rather unusual insect has been found to be a common ectoparasite on the Indian elephant (Elephas maximus), and has been collected in low numbers from the African elephant (Loxodonta africana) in nearly all of sub-saharan Africa (Ledger 1979, The arthropod parasites of vertebrates in Africa south of the Sahara (Ethiopian Region) Vol. IV.


Koedoe ◽  
1992 ◽  
Vol 35 (1) ◽  
Author(s):  
A.J. Hall-Martin

The historical decline of African elephants to a low of 120 animals in 1920, and their subsequent recovery to over 10 000 is described for the major populations of South Africa. Population growth rates of 6,8 and 6,7 per annum are derived from census and estimates for the Kruger National Park and the Addo Elephant National Park respectively. The reasons for elephant population control in the Kruger National Park, and the impact of elephants on both the Kruger and Addo environments, are discussed. The translocation of young elephants to found new populations is mentioned. The consequent increase of elephant range and numbers in the next decade to a possible maximum of 31 000 km2 and 13 000 animals, is envisaged.


Koedoe ◽  
1978 ◽  
Vol 21 (1) ◽  
Author(s):  
C. Wallace

The present report is published because of the paucity of publication on the mitotic chromosomes of the African elephant Loxodonta africana, and because it is the fisrt study in which the meiotic chromosomes of the species are described.


Koedoe ◽  
1972 ◽  
Vol 15 (1) ◽  
Author(s):  
D. R Osterhoff ◽  
E Young ◽  
I. S Ward-Cox

In a random sample of 84 elephants from the Kruger National Park and five elephants from the Addo Elephant National Park, biochemical polymorphism in the serum transferrins could be established. It seems that elephants in the Kruger and Addo Parks are genetically similar but further studies are indicated to confirm these preliminary findings. For the haemo- globin investigations 109 blood samples were available, all originating from the Kruger National Park and all revealing only one type of haemoglobin.


Koedoe ◽  
2000 ◽  
Vol 43 (2) ◽  
Author(s):  
E.J. Raubenheimer

The embryologic development of the tush and tusk of the African elephant was studied by means of serial histologic sections prepared from elephant embryos with masses varying between Ig and 240 g. Statistics on tusklessness obtained during a four year population control programme in the Kruger National Park were analysed and compared with those reported in other elephant reserves in Southern Africa. Maxillae of eight elephant embryos, the maternal histories of which were available in six cases, were radiographed, dissected and examined microscopically. This study has shown that the tush and tusk develop from one tooth germ in a deciduous to permanent tooth relationship. Tusklessness was found to be unilateral or bilateral and associated with either the absence or presence of a tush. The possible causes of the differences in the frequency of bilateral tusklessness in different elephant populations are discussed.


Koedoe ◽  
1966 ◽  
Vol 9 (1) ◽  
Author(s):  
U. De V. Pienaar ◽  
J. W. Van Niekerk ◽  
E Young ◽  
P Van Wyk ◽  
N. Fairall

This paper was accepted for publication on the 16th August, 1965. - Editor


Bioacoustics ◽  
2014 ◽  
Vol 24 (1) ◽  
pp. 1-12 ◽  
Author(s):  
Jozua Jakobus Viljoen ◽  
Andre Ganswindt ◽  
Christopher Reynecke ◽  
Angela S. Stoeger ◽  
William Richard Langbauer

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