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Interaction entre hommes et girafes dans la zone de distribution de la girafe au Niger

Cette étude qui porte sur l’interaction entre hommes et girafes a été menée dans la zone de distribution de la girafe du Niger dénommée « aire girafe ». Elle a concerné douze (12) villages répartis sur les deux (2) foyers de distribution, la zone centrale et la zone de Fandou. Au total, 218 personnes ont été enquêtées et les données comparées entre villages et entre foyers de troupeau de girafes. Les résultats montrent que les dégâts sur les cultures et

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Giraffe

Watching the distinctive rocking gait of a giraffe as it moves placidly from acacia tree to acacia tree while feeding at the end of a long hot African afternoon, head and horns poking out comically from the uppermost branches as it forages deftly and delicately among the razor-sharp thorns with a fat, purple tongue, is something we’ve been lucky enough to enjoy often during our years as professional wildlife photojournalists. You might think such familiarity had made us impervious to

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A Synopsis of the Diseases of Giraffes

This synopsis has been prepared to inform the general public about all of the extremely complex health issues facing both free-ranging and captive Giraffes with the goal in mind of hopefully interesting more people to become involved with Giraffe conservation efforts. Studies of the diseases of captive Giraffes in Zoological Gardens serve to indicate how susceptible Giraffes can be to contracting new diseases in confined mixed animal populations. Most Zoos are generally very stressing to Giraffes. It is extremely heart

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Large herbivore loss has complex effects on mosquito ecology and vector-borne disease risk

Loss of biodiversity can affect transmission of infectious diseases in at least two ways: by altering host and vector abundance or by influencing host and vector behavior. We used a large herbivore exclusion experiment to investigate the effects of wildlife loss on the abundance and feeding behavior of mosquito vectors and to explore consequences for vector-borne disease transmission. Large herbivore loss affected both mosquito abundance and blood-feeding behavior. For Aedes mcintoshi, the dominant mosquito species in our study and a

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Use of Specialized Questioning Techniques to Detect Decline in Giraffe Meat Consumption

Biodiversity conservation depends on influencing human behaviors, but when activities are illegal or otherwise sensitive, actors can be hesitant to admit engagement with illicit behaviors. We applied Specialized Questioning Techniques (SQT) to estimate and compare behavioral prevalence of giraffe meat consumption between direct questioning and two SQTs, Randomized Response Technique (RRT) and Unmatched Count Technique (UCT), from 2017 to 2019. Comparisons between the two samples yielded significant differences across all three methods, with confidence intervals distinctly divergent between years. The

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Herbivore dung stoichiometry drives competition between savanna trees and grasses

The balance between trees and grasses is a key aspect of savanna ecosystem functioning, and so far, believed to be regulated by resource availability, fire frequency and consumption by mammalian herbivores. Herbivores, however, also impact plant communities through the deposition of growth-limiting nutrients in their dung and urine. Little attention has been paid to the fact that savanna herbivores produce dung containing different concentrations of nutrients and it remains unknown what the effect of this variation is on tree-grass interactions.

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Survival of the tallest

The extreme adaptations of the giraffe have fuelled evolutionary hypotheses since the time of Lamarck. In-depth studies of its genomes are now yielding solid answers about its evolution, along with the identifi cation of new species. A better understanding of its biology, including its social behaviour, may help to secure the future of this unique animal.

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Assessment of the feasibility to reintroduce Angolan giraffe (Giraffa giraffa angolensis) into Iona National Park, Angola focusing on habitat and social suitability

Giraffe (Giraffa spp.) numbers and distribution have shown dramatic decline (>30%) over the past 30 years. A century ago, the population size in the wild was estimated at >1 million individuals. At present, there are approximately 117, 000 individuals remaining, of which 50% are throughout southern Africa. This rapid decline is mainly thought to be due to habitat loss, fragmentation and degradation, and sporadic poaching and civil unrest ravaging many African countries. As a result of this decline, giraffe was

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A literature review of horn and horn-like structures in vertebrates to correlate placement to function, behavior, and niche.

In this paper, the true horns of bovids are compared to the many horn-like structures found throughout the animal kingdom. Literary sources were reviewed for a variety of horn-like structures. The review was limited to extinct and extant terrestrial vertebrates. 3D models of these organisms’ skulls and “horns” were created or acquired and 3D printed at the same scale to illustrate their differences and similarities and to analysis of their comparative size easier between large and small genera.

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Further behavioural parameters support reciprocity and milk theft as explanations for giraffe allonursing

Suckling of a non-filial calf, or allosuckling, is an extreme case of allomaternal care in mammals. There have been many hypotheses postulated in an attempt to explain this behaviour; however, the supporting evidence differs, together with the conclusions drawn from the investigated variables. Previously, suckling bout rejection was analysed, and the milk theft and reciprocity hypotheses were both determined as the most appropriate explanation of allosuckling in giraffe. In this study, seven hypotheses were tested using different behavioural parameters, namely

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