Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 104 for “"Elephants"”.
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Visual and olfactory recognition of familiar humans and elephants by African elephants
African elephants (Loxodonta africana) distinguish between familiar and non-familiar conspecifics through olfaction and human ethnic groups through vision and olfaction. We investigated whether elephants recognize individual familiar humans and elephants through vision and olfaction in two captive …
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Conservation genetics of African elephants
… landscape transformation, and the poaching of elephants for the illegal ivory trade, has reduced and fragmented elephant populations to a fraction of their former population size and range. It has therefore become necessary to develop and implement proactive and targeted conservation …
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The Conundrum of Causal Reasoning in Elephants
… causal reasoning in a tool-use task with elephants and concluded that elephants were not capable of causal reasoning. The current study, a modified replication, yielded results that were not congruent with Nissani’s (2006) manuscript. Additionally, it was very unlikely that the Nissani …
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Habituation to Auditory Stimuli by Captive African Elephants (Loxodonta Africana)
<p>Elephants are cognitive species that exhibit many types of learning. Associative, social, and insight learning have been investigated with elephants, but one of the simplest forms, habituation, has not. As an individual learns that a stimulus is neither harmful nor beneficial, it will decrease …
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Chemosensory Behavior and Development of African Male Elephants (Loxodonta Africana)
African elephants are a polygynous species that raise offspring in a matriarchal society. Males disperse, spend time in male groups, and search for mates when mature. Urinary chemical signals play an important role in detecting reproductively active females. African male elephants develop movement, …
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Chemical Signaling and Resource Use by African Elephants (Loxodonta Africana)
… has affected elephant movements and impact. Elephants travel in matriarchal family groups, as single males or bachelor groups often looking for receptive females, and in mixed associations. Waterholes serve to meet the physical needs of elephants and as areas for information exchange, …
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THE WHITE FRAUD: WHITE ELEPHANTS, VALUE, AND EXCHANGE IN AMERICAN LITERATURE
… which contemporary American writing about white elephants remains vexed about the value and importance of these animals, and still casts them as figures of irresolvable cultural difference. In order to establish the significance of the white elephant for antebellum America, I examine the roles …
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Novel Applications of Multivariate Methods for Exploring Personality in African Elephants
<p>Investigators have shown that elephants exhibit consistent individual differences in behavior by rating elephants using personality adjectives. These adjectives, however, are not based on pre-defined measurements of the behaviors performed. Instead, they are based on the observers’ …
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Socioecology, Acoustic Communication and Demography of Asian Elephants in Sri Lanka
… ACOUSTIC COMMUNICATION AND DEMOGRAPHY OF ASIAN ELEPHANTS IN SRI LANKA Shermin de Silva (Author) Dorothy L. Cheney (Supervisor) Comparison of behavior across species brings to light the underlying social and ecological factors that have shaped social organization and communication. Elephantids, …
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Environmental enrichment with an emphasis on choice and control for captive elephants.
Abstract summary not available
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Waterhole Dynamics and Chemical Signals of African Elephants (<i> Loxodonta Africana </i>)
… ambient temperature on the use of a waterhole by elephants as well as the co-occurrence of elephants and other mammals at the waterhole. Biodiversity scans (October 2004-June 2007) and were performed at a permanent waterhole on the Ndarakwai Ranch in northern Tanzania. More elephant and mammal …
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Sexually Dimorphic Developmental Patterns of Chemosensory Behaviors in African Elephants (Loxodonta Africana)
Like many polygynous mammals, African elephants exhibit social dimorphism in which females reside in matriarchal groups while males often travel alone or in bachelor groups. Males search for receptive mates who may advertise their condition through chemical and other signals. The difference in …
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Immune function alterations in Asian elephants (Elephas maximus) infected with Mycobacterium species
… similarly contribute to tuberculosis in Asian elephants. Therefore, this study was undertaken to investigate systemic and local (pulmonary) immune responses in Asian elephants with tuberculosis. To develop molecular tools for assessment of elephant immune function, partial mRNA sequences for …
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Insular adaptations in the appendicular skeleton of Sicilian and Maltese dwarf elephants
… found between the femur of young continental elephants (P. antiquus and L. africana) and adult insular dwarfs (P. ex gr. P. falconeri and its probable ancestor Palaeoloxodon sp. from Lparello Fissure, Sicily) suggest evidence of paedomorphism in the limbs. Similarly, comparisons of the …
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Natural and anthropogenic influences on elephants and other ungulates in the Congo forest
… (DRC), I developed spatio-temporal models for elephants and other forest ungulates to examine temporal changes in their densities as a result of changes in human impact in the context of a civil war that took place in the region between the two surveys. Covariates related to human influences …
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Age Effects on Social and Investigative Behaviors in a Closed Population of African Elephants
In this study of African elephants (Loxodonta africana), I examined two competing hypotheses to explain the development of social and reproductive behaviors. The reproductive hypothesis states that behaviors change around the time when an individual begins successfully reproducing, while the social …
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Patterns of Chemosensory Behavior in a Closed Population of Wild African Elephants (Loxodonta Africana)
… identity, status, or location of conspecifics. Elephants are a long-lived species and males reproduce at a much later age than females, which provides a protracted developmental period for males. This study examined chemosensory behaviors in a population of African elephants living in Addo …
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Patterns and mechanisms of stem mortality in Acacia nigrescens induced by elephants and fire
… in the last 10 years. One manner in which elephants utilize trees is by stripping their bark. The role of bark stripping in increasing stem vulnerability to fire and the mechanism through which fire damage is mediated were investigated by experimentally removing bark and burning Acacia …
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Social and Environmental History of Elephants and Human Groups in Southeast Zimbabwe, c. 1965-2020
… the intertwined histories of humans and elephants in Gonarezhou in the southeast of Zimbabwe over fifty-five years, from 1965 to 2020. It examines how political change, economic priorities, and shifting conservation ideologies continually reshaped the terms of coexistence between the two …
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