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Do African Savanna Elephants (Loxodonta africana) Show Interspecific Social Long-Term Memory for Their Zoo Keepers?
Zoo Biol
October 2024
Zoology and Functional Morphology of Vertebrates, Zoological Institute, Christian-Albrechts-Universität zu Kiel, Kiel, Germany.
"An elephant never forgets" is a popular phrase that refers not only to the elephant's extraordinary ability to remember migration routes but also to its pronounced social long-term memory (SLTM). Previous studies have shown intra- and interspecies SLTM performance, but the ability of elephants to have memories of individual humans has not yet been investigated. We tested this interspecific SLTM using auditory, olfactory, and visual stimuli, each from familiar and unfamiliar persons, in two African savanna elephant (Loxodonta africana) cows living in a zoo.
View Article and Find Full Text PDFFunctional sensory circuits built from neurons of two species.
Cell
April 2024
Department of Neuroscience, The Scripps Research Institute, La Jolla, San Diego, CA, USA; Neuroscience Graduate Program, University of California, San Diego, La Jolla, San Diego, CA, USA; Department of Genetics and Development, Columbia Stem Cell Initiative, Columbia University Medical Center, New York, NY, USA. Electronic address:
A central question for regenerative neuroscience is whether synthetic neural circuits, such as those built from two species, can function in an intact brain. Here, we apply blastocyst complementation to selectively build and test interspecies neural circuits. Despite approximately 10-20 million years of evolution, and prominent species differences in brain size, rat pluripotent stem cells injected into mouse blastocysts develop and persist throughout the mouse brain.
View Article and Find Full Text PDFType 2 vomeronasal receptor-A4 subfamily: Potential predator sensors in mice.
Genesis
April 2024
Neuroscience Graduate Program, University of California, Riverside, Riverside, California, USA.
Sensory signals detected by olfactory sensory organs are critical regulators of animal behavior. An accessory olfactory organ, the vomeronasal organ, detects cues from other animals and plays a pivotal role in intra- and inter-species interactions in mice. However, how ethologically relevant cues control mouse behavior through approximately 350 vomeronasal sensory receptor proteins largely remains elusive.
View Article and Find Full Text PDFInterspecies metabolite transfer fuels the methionine metabolism of to stimulate volatile methyl mercaptan production.
mSystems
February 2024
Department of Preventive Density, Osaka University Graduate School of Dentistry, Suita, Osaka, Japan.
The major oral odor compound methyl mercaptan (CHSH) is strongly associated with halitosis and periodontitis. CHSH production stems from the metabolism of polymicrobial communities in periodontal pockets and on the tongue dorsum. However, understanding of CHSH-producing oral bacteria and their interactions is limited.
View Article and Find Full Text PDFVolatile Organic Compounds: A Promising Tool for Bed Bug Detection.
Int J Environ Res Public Health
March 2023
Parasitology-Mycology Department, Avicenne Hospital, AP-HP, Sorbonne Paris Nord University, 93000 Bobigny, France.
The recent decades' resurgence of bed bugs as a public health concern in industrialized countries has driven an increased interest on new sustainable insecticide-free methods to monitor and control these ectoparasites. Current methods of detection rely mainly on visual inspection or canine scent detection, which are methods that are time-consuming, require experience, are non-specific or require costly mission repetitions. Volatile organic compounds (VOCs) are considered an environmentally friendly alternative and a promising approach for bed bug detection.
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