We describe the development of neurological signs in four juvenile black-and-white ruffed lemurs (Varecia variegate), housed at a petting zoo in Japan. The clinical course was severe, with three lemurs dying within 1 day of the appearance of clinical signs. The other lemur was treated and survived. Pathological analyses demonstrated meningitis and the presence of gram-negative bacilli in the cerebrum, cerebellum, palatine tonsil and liver. Klebsiella pneumoniae was isolated from the brain of all of the dead lemurs. Multilocus sequence typing analysis showed that all the isolates were sequence type 86 (ST86). To our knowledge, this is the first determination of K. pneumoniae infection in ruffed lemurs of this genus. K. pneumoniae infection may represent a risk to lemurs and people who come into contact with infected animals.
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http://dx.doi.org/10.1016/j.jcpa.2016.12.003 | DOI Listing |
Nat Ecol Evol
January 2025
IBE, Institute of Evolutionary Biology (UPF-CSIC), Department of Medicine and Life Sciences, Universitat Pompeu Fabra, Barcelona, Spain.
Ecological variation and anthropogenic landscape modification have had key roles in the diversification and extinction of mammals in Madagascar. Lemurs represent a radiation with more than 100 species, constituting roughly one-fifth of the primate order. Almost all species of lemurs are threatened with extinction, but little is known about their genetic diversity and demographic history.
View Article and Find Full Text PDFAm J Primatol
January 2025
School of Life Sciences, Animal Behaviour & Wildlife Conservation Group, University of Wolverhampton, Wolverhampton, UK.
The Alaotran gentle lemur (Hapalemur Alaotrensis) is one of the most endangered primates in the world and shows a low success rate in captive breeding programmes. We tested a novel scent enrichment, made up of a synthesized mixture likely conveying information about female fertility, on four unsuccessful breeding pairs (n = 8 subjects) living at the Jersey, Birmingham, London (United Kingdom) and Mulhouse (France) zoos. We evaluated the effects of the scent enrichment on behavior (515 h of observation) and fecal endocrinology (cortisol and testosterone measurements) (n = 180 samples) comparing pre- enrichment, enrichment and post- enrichment phases.
View Article and Find Full Text PDFHorm Behav
January 2025
Department of Sociobiology/Anthropology, University of Göttingen, Göttingen, Germany; Behavioral Ecology & Sociobiology Unit, German Primate Center, Göttingen, Germany. Electronic address:
Intraspecific competition with fellow group members represents an unavoidable cost of group living. However, the causes of competition can vary among group members, and ecological and reproductive challenges faced by individuals throughout the year can trigger physical conflicts and or physiological responses. To date, few studies in mammals have described both physiological and behavioral responses to competition simultaneously across the year in both males and females.
View Article and Find Full Text PDFAm J Primatol
November 2024
Higher Education, University Centre Sparsholt, Westley Lane, Sparsholt, Winchester, UK.
Whole food diets in zoos have the potential to reduce microbial contamination and keeper preparation time, whilst also reducing food nutrient breakdown. Given these benefits, it is important to determine whether there is any value in chopping up food. Lemurs (Family Lemuridae) are common in zoos, with over 7500 individuals housed globally.
View Article and Find Full Text PDFSci Rep
November 2024
Faculty of Life Sciences, Institute of Biology, Human Biology & Primate Cognition, Leipzig University, Leipzig, Germany.
Behavioral contagion is thought to play a significant role in social synchronization and coordination across animal taxa. While there is extensive evidence of behavioral contagion in Haplorrhines (i.e.
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