title: Polymorphic New World monkeys with more than three M/L cone types.
abstract: Most New World (platyrrhine) monkeys have M/L cone photopigment polymorphisms that map directly into individual variations in visual sensitivity and color vision. We used electroretinogram flicker photometry to examine M/L cone photopigments in the New World monkey Callicebus moloch (the dusky Titi). Like other New World monkeys, this species has an M/L cone photopigment polymorphism that reflects the presence of X-chromosome opsin gene alleles. However, unlike other platyrrhines in which three M/L photopigments are typical, Callicebus has a total of five M/L cone photopigments. The peak sensitivity values for these pigments extend across the range from 530 to 562 nm. The result is an enhanced array of potential color vision phenotypes in this species.
authors.affiliation: Neuroscience Research Institute and Department of Psychology, University of California, Santa Barbara 93106, USA. jacobs@psych.ucsb.edu
authors.forename: Gerald H
authors.initials: GH
authors.lastname: Jacobs
authors.forename: Jess F
authors.initials: JF
authors.lastname: Deegan
mesh_terms: D000818:Animals; D002428:Cebus / Q000502:physiology*; D003118:Color Perception / Q000502:physiology*; D004596:Electroretinography / Q000379:methods*; D005260:Female; D008297:Male; D010775:Photic Stimulation / Q000379:methods*; D011110:Polymorphism, Genetic; D017949:Retinal Cone Photoreceptor Cells / Q000502:physiology*; D012168:Retinal Pigments / Q000235:genetics* / Q000378:metabolism*
chemical_list: D012168:Retinal Pigments