Within the animal kingdom, reproductive success is vital for species survival. To aid in success rate, species have developed means to indicate reproductive viability, including chemical signals. These signals pass information, including reproductive status, health, and sex. In 2018, the novel perianal gland of Sogmodon hispidus was discovered and hypothesized to be related to mating, due to its seasonal growth, present only during the mating season. This gland follows the same pattern as the other male reproductive organs, indiscernible during non-mating season and highly developed during mating season. The chemical contents of this gland, along with the other reproductive organs were investigated by GC-MS to determine the compounds present. Direct injection of the contents and headspace analysis showed that long-chain carbon molecules and oxygenated organic compounds were present in the glands. These were then compared to determine any differences between the reproductive organs and the perianal gland’s secretions.

GC-MS analysis the secretions from the periannal gland of Sogmodon hispidus

ACS Spring 2022

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