Results 61 to 70 of about 40,933 (260)

Plasma testosterone levels in relation to musth in the male African Elephant

Koedoe: African Protected Area Conservation and Science, 1984
A long-term study of the behaviour and ecology of the African elephant Loxodonta africana was begun in the Addo Elephant National Park in 1976. During the period June 1976 to March 1979 regular observations were made on all animals.
A.J Hall-Martin, L.A van der Walt
doaj   +1 more source

A Novel Objective Method of Estimating the Age of Mandibles from African Elephants (Loxodonta africana Africana). [PDF]

PLoS ONE, 2015
The importance of assigning an accurate estimate of age and sex to elephant carcasses found in the wild has increased in recent years with the escalation in levels of poaching throughout Africa.
Fiona J Stansfield
doaj   +1 more source

Movement Patterns of African Elephants (Loxodonta africana) in a Semi-arid Savanna Suggest That They Have Information on the Location of Dispersed Water Sources

Frontiers in Ecology and Evolution, 2018
Water is a scarce resource in semi-arid savannas where over half of the African elephants (Loxodonta africana) populations occur and may therefore influence their movement pattern.
Yussuf A. Wato, H. Prins, I. Heitkönig, G. Wahungu, Shadrack Ngene, Steve Njumbi, F. van Langevelde   +6 more
semanticscholar   +1 more source

Spatial behavior of socially isolated wild pigs (Sus scrofa) following sounder removal via trapping

Pest Management Science, EarlyView.
Following partial sounder removal, socially isolated wild pigs maintained site fidelity near traps, highlighting post‐control behavioral tendencies that are relevant to pest management and disease mitigation. Abstract BACKGROUND The rapid expansion of wild pig (Sus scrofa) populations across North America, coupled with increased concern over disease ...
Sebastian Gomez‐Maldonado, Matthew T McDonough, Jonathon J Valente, Mark D Smith, Stephen S. Ditchkoff   +4 more
wiley   +1 more source

Monitoring GPS‐collared moose by ground versus drone approaches: efficiency and disturbance effects

Wildlife Biology, EarlyView.
Efficient wildlife management requires precise monitoring methods, for example to estimate population density, reproductive success, and survival. Here, we compared the efficiency of drone (equipped with a RGB camera) and ground approaches to detect and observe GPS‐collared female moose Alces alces and their calves. We also quantified how drone (n = 42)
Martin Mayer, Erlend Furuhovde, Kristoffer Nordli, Giorgia Myriam Ausilio, Petter Wabakken, Ane Eriksen, Alina L. Evans, Karen Marie Mathisen, Barbara Zimmermann   +8 more
wiley   +1 more source

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

Journal of the South African Veterinary Association, 2008
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.
Steenkamp, Gerhardus, Ferguson, Jan Willem Helenus, Boy, Sonja Catharina, Ferreira, Sam M., Bester, Marthan Nieuwoudt   +4 more
openaire   +3 more sources

A Survey of the Management and Development of Captive African Elephant (\u3cem\u3eLoxodonta africana\u3c/em\u3e) Calves: Birth to Three Months of Age [PDF]

, 2010
We used four surveys to collect information about the birth, physical growth, and behavioral development of 12 African elephant calves born in captivity. The management of the birth process and neonatal care involved a variety of standard procedures. All
Dale, Robert H.I., Kowalski, Nicole L., Mazur, Christa L. H.   +2 more
core   +1 more source

Evaluating machine learning models for multi‐species wildlife detection and identification on remote sensed nadir imagery in South African savanna

Wildlife Biology, EarlyView.
This research paper investigates the efficacy of leading machine learning (ML) models for detecting and identifying ungulate species in African savanna using nadir imagery from unmanned aerial vehicles (UAVs). Traditional aerial counting methods, while widely used, suffer from significant limitations in accuracy and precision, in part due to human ...
Paul Allin, Fadel Seydou, Radloff Frans, Andrew Davies, Alison Leslie   +4 more
wiley   +1 more source

Response of African elephants (Loxodonta africana) to seasonal changes in rainfall. [PDF]

PLoS ONE, 2014
The factors that trigger sudden, seasonal movements of elephants are uncertain. We hypothesized that savannah elephant movements at the end of the dry season may be a response to their detection of distant thunderstorms.
Michael Garstang, Robert E Davis, Keith Leggett, Oliver W Frauenfeld, Steven Greco, Edward Zipser, Michael Peterson   +6 more
doaj   +1 more source

Sourcing african ivory in chalcolithic Portugal [PDF]

, 2009
A recent review of all ivory from excavations in Chalcolithic and Beaker period Iberia shows a marked coastal distribution – which strongly suggests that the material is being brought in by sea.
Banerjee, Arun, Cardoso, João Luís, Schuhmacher, Thomas X.   +2 more
core   +1 more source