NHP biology Flashcards
Definition: primate
Unguiculate, claviculate, placental mammal with orbits encircled by bone; three kinds of teeth at least at one time of life; brain always with a posterior lobe and a calcarine fissure; the innermost digits of at least one pair of extremities opposable; hallux with a flat nail or none; a well-marked cecum; penis pendulous; testes scrotal; always two pectoral mammae
Neotropical primate
NWM, primates indigenous to the Americas
Prosimian
All taxa within suborders Strepsirrhini and Haplorrhini (lemurs, tarsirs) - “before monkeys”
Simian
Monkeys and apes
Tarsier
Primate of the genus Tarsius - noctural, large eyes and mobile ears, toilet claws, two part madible
Lack naked rhinarium and dental comb
Upright incisors and dry, furry nose
Lesser ape
Members of the family Hylobatideae (gibbons, siamangs)
Almost entirely arboreal, true brachiators, lack external tail
Callitrichinae
Small, (2/2, 1/1, 3/3, 2/2, claws or facula instead of nails, little to no sexual dimorphism, high frequency of twinning; specialized nail on the first digit of each foot, the hallux, which is opposable
Scent glands - callitrichinae
Circumgenital glands - well-developed sebaceous glands overlying enlarged apocrine glands that cover the labia majora and pudendum in female and scrotum in male
Sternal glands - predominantly apocrine glands located on anterior chest
Callitrichinae subfamily
Callithrix, Mico, Cebuella, Callibella, Sanguinus, Lentopithecus, Callimico
Callitrichinae reproduction
Nonbreeding females do not ovulate in presence of dominant female
Ovarian cycle - 28d
Marked rise in plasma progesterone within 1 day postovulation
Blood chimerism - twins
No freemartinism - converts androgens to estrone
Nonseasonal
Callitrichid nest box
Sanitized every other week
Owl monkey repro
No change in external genitalia or predictable changes in vaginal cornification
15-18d estrous cycle
Remain receptive to males throughout cycle
No postpartum estrus
No seasonal breeding
Ventrolateral clinging until 3-4 weeks
S. sciureus
Common squirrel monkey
S. s. sciureus
Guyanese squirrel monkey, patch of pigmented hairs within the patch of whitish hair above each eye resembling eyebrowns
S. s. macrodon
Ecuadorian squirrel monkey
S. s. cassiquiarensis
Humbolt’s squirrel monkey
S. s. alibigena
Colombian squirrel monkey
S. collinsi
Collin’s squirrel monkey