Measuring mantled howler monkey (Alouatta palliata) testes via parallel laser photogrammetry: Expanding the use of noninvasive methods

• Published in: American journal of primatology Vol. 86; no. 6; p. e23616
• Main Authors: Ehrie, Austen J, Iruri-Tucker, Alec A, Lord, Yasmin B, Williamson, Heidi G, Hunt, Kevin D, Polly, P David, Fitzpatrick, Courtney L, Wasserman, Michael D
• Format: Journal Article
• Language: English
• Published: United States Wiley Subscription Services, Inc 01.06.2024
• Subjects: Alouatta palliata; Body size; Coefficient of variation; Disruption; Distance; Endocrine disruptors; Image analysis; Image processing; Laser beams; Lasers; Limbs; Monkeys; Morphology; Non-invasive; Photogrammetry; Primates; Reliability; Sperm; Sperm competition; Spermatozoa; Testes; Tests; La Selva; Costa Rica; remote measurement; howler monkeys; male sex characteristics; reproductive ecology; La Selva Biological Station

Parallel laser photogrammetry (PLP), which consists of attaching two or three parallel laser beams at a known inter-beam distance to a camera, can be used to collect morphological measurements of organisms noninvasively. The lasers project onto the photo being taken, and because the inter-beam dista...