The use of anogenital distance as a non‐invasive predictor of seminal quality in captive squirrel monkey (Saimiri collinsiOsgood 1961)

Abstract

Background Anogenital distance is considered a non‐invasive measure to assess the development and functionality of sexual organs in different animal species. Hence, this measurement could potentially be used during the selection of non‐human primates for reproductive biotechnology programs. The aim of this study was to assess the correlation between anogenital distance and reproductive parameters in captive Saimiri collinsi. Methods Eight mature S. collinsi males were evaluated. Body weight, reproductive hormone levels, testicular volume, and seminal parameters were determined, and their relationship with anogenital distance measurements was assessed. Results Anogenital distance was correlated with seminal volume, sperm motility, vigor, and plasma membrane integrity, but not with body weight, reproductive hormones, and testicular volume. Conclusion The determination of anogenital distance is a non‐invasive method to predict seminal quality. This procedure has the advantage of providing andrologic information without a negative impact on animal welfare.

Zika Virus Infection Damages the Testes in Pubertal Common Squirrel Monkeys (Saimiri collinsi)

“…The testicular volume data of all animals evaluated in this study, as well as their body weight [ 35 , 75 , 76 , 77 ], were considerably lower than those observed in sexually matured S. collinsi [ 35 , 75 , 76 , 77 ]. In G2, the correlation of testosterone levels and testicular volume contributed to the reduction in the GSI, and histomorphometry evaluation indicated a loss of scrotal mass, suggesting an immediate effect of androgen even though its normal production recovered by the end of the experiment.…”