Strepsirhines
description
Transcript of Strepsirhines
Strepsirhines Haplorhines
Lorisoidea“Mainland Africa”
Lemuroidea“Malagasy”
TarsioideaAnthropoidea
Cercopithecoidea“Old World Monkeys”
Platyrrhines
Hominoidea“Apes and Humans”
Lorises and Galagos
LemursCatarrhines
Tarsiers
Cebids, Atelids, and Callitrichids
Ceboidea“New World Monkeys”
Colobines andCercopithecines
Hylobatids, Pongids,and Hominids
StrepsirhinesMalagasy Strepsirhines
Madagascar
StrepsirhinesMalagasy Strepsirhines
• Characteristics:– dental tooth comb– grooming claw on
second digit of feet– postorbital bar– no postorbital closure– most have a
mandibular symphysis – unfused frontal bone– variations in foot
anatomy related to locomotion
Cheirogaleidae• 5 extant genera• Examples:
– Pygmy Mouse Lemur (Microcebus myoxinus)
– Coquerel’s Dwarf Lemur (Mirza coquereli)
– Fat-tailed Dwarf Lemur (Cheirogaleus medius)
• Characteristics:– Average weight ranging from 0.03-
0.6kg– Nocturnal– Arboreal quadrupeds– Microcebus myoxinus is smallest
living primate– Cheirogaleus medius hibernates for
up to 6 months– Most females only receptive to
mate for a few hours each year
Pygmy Mouse Lemur
Dwarf Lemur
Fat-tailed Dwarf Lemur
Lemuridae• 4 extant genera• Examples:
– Ring-tailed Lemur (Lemur Catta)
– Ruffed Lemur (Varecia variegata)
– Gray Bamboo Lemur (Hapalemur griseus)
• Characteristics:– Average weight ranging
from 0.6-2.2 kg– Diurnal– Mostly arboreal quadrupeds– Hapalemur uses some
Vertical Clinging and Leaping (VCL)
Ring-tailed Lemur
Bamboo Lemur
Ruffed Lemur
Lepilemuridae• 1 extant genus• Examples:
– White-footed Sportive Lemur (Lepilemur leucopus)
• Characteristics:– Average weight ranging
from 0.5-1.0kg– Nocturnal– Vertical Clingers and
Leapers (VCL)– Reingests its feces to get
broken-down cellulose
Sportive Lemur
Indriidae• 3 extant genera• Includes:
– Woolly Lemur (Avahi)– Sifaka (Propithecus)– Indri (Indri indri)
• Characteristics:– Average weight ranging from
0.7-6.8 kg– Specialized leapers with long
hindlimbs, feet, and hands– All specialized VCL’s– Avahi is nocturnal– Propithecus moves bipedally
on the ground– Indri has no tail
Sifaka
Indri
Daubentoniids
• Aye-aye (only extant species)• Characteristics:
– enormous ears– rodent like incisors– large clawed digits, except for hallux– third digit is extremely long and
slender– nocturnal– quadrupeds
Strepsirhines
• Includes:– Galagidae (bushbaby)– Lorisidae (potto, slow loris,
and slender loris)
• Characteristics:– grooming claw on the second
digit – nocturnal– arboreal quadrupeds– dental tooth comb
Mainland Africa Strepsirhines
Galagos and Lorises
Lorises
GalagoLoris
Galagos and Lorises• Examples of Galagos:
– Greater Bushbaby (Otolemur garnetti)– Senegal Bushbaby (Galago senegalensis)
• Characteristics:– Average weight ranging from 0.06-1.1kg– elongated calcaneus and navicular bones– VCL’s– Demidoff’s Bushbaby one of the smallest living
primates
• Examples of Lorises:– Slender Loris (Loris tardigradus)– Slow Loris (Nycticebus coucang)
• Characteristics:– Average weight range from 0.3-1.1kg– Slow and stealthy quadrupeds
Greater Bushbaby
Slender Loris Slow Loris