Vivid biofluorescence discovered in the nocturnal Springhare (Pedetidae)

Area of Science:

• Zoology
• Mammalogy
• Biophysics

Background:

• Biofluorescence is observed in various nocturnal-crepuscular organisms, including mammals across different phylogenetic groups.
• Previous discoveries include the duck-billed platypus, opossums, and flying squirrels, but not Old World placental mammals.

Purpose of the Study:

• To document and characterize biofluorescence in springhares (Pedetidae).
• To investigate the physical and chemical properties of springhare biofluorescence.
• To explore the distribution and ecological significance of mammalian biofluorescence.

Main Methods:

• Examination of museum specimens and captive individuals of springhares.
• Spectroscopic analysis to characterize the physical and chemical properties of the fluorescence.
• Microscopic analysis to determine the origin of biofluorescence within hair structures.

Main Results:

• Vivid biofluorescence was documented in springhares, representing the first instance in an Old World placental mammal.
• Springhare biofluorescence displayed unique visual patterning and color shift intensity compared to other mammals.
• The fluorescence originates in the hair cuticle, with contributions from porphyrins and an unidentified molecule.

Conclusions:

• Biofluorescence is present in springhares, expanding the known diversity of fluorescent mammals.
• The unique properties suggest potential ecological roles for biofluorescence in nocturnal mammals.
• This discovery supports the hypothesis that biofluorescence is broadly distributed across Mammalia.