233 prosimians
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Transcript of 233 prosimians
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TO KNOW:
RECOGNIZE BETTER KNOWN GENERA GENUSCOMMON NAMEDISTINGUISHING/INTERESTING
CHARACTERISTICSBooks on reserve and ppt’s
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LEMURIFORMES OF MADAGASCAR
ALL ENDANGERED
HUMANS ARRIVED 1.5 kya
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LEMURIDAE(low sexual dimorphism)
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True lemurs Multi-male/female Some dichromatic Cathemeral – important pollinators (black lemurs more nocturnal than
diurnal - night blooms) Semi-terrestrial quadruped with VCL capabilities FFTK: Brown lemurs salivate on millipedes and roll between hands before
eating
Crowned Black (♀ orange) Brown Mongoose
Eulemur
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Lemur
1 species: L. catta - ring-tailed lemur Cat-sized, ~6# Herbivores Suffer seasonal periods of food scarcity
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Most terrestrial
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Large multi-male/female groups Even in face of food shortages Additional protection from predators
Core of females which are dominant to males in food contests
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Vulnerable to predators Have distinct alarm calls –
aerial vs. terrestrial Males stink fight
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Polyspecific association - brown lemurs
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HapalemurGentle or bamboo
lemur
3 sympatric species at 1 site Diet Cyanogenic compounds Niche partitioning: plant part,
(level, time?)
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SETH PALMER IN MADAGASCAR
11” WALKING STICK!!!
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1 species: V. variegata - ruffed lemur
Only large lemur to give birth to multiple offspring
Don’t survive well in logged areas – eat large fruit from large trees
Varecia
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MEGALADAPIDAE
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Sportive, weasel lemurs Broad distribution 1 sp cannot survive well in
logged areas – cannot sustain themselves moving too far between trees
Small, drab-colored Nocturnal VCL’s Territorial –↑scars ↑Leaves, ↓activity, copraphagic Solitary or pairs Single births, parking
Lepilemur
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CHEIROGALEIDAE
Smallest and most primitive lemuriformes
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Nocturnal Nest-building - sleep in nests or tree holes during
day Some hibernate for as long as 6-9 mos Most store fat in tail 3 pairs nipples Usually multiple offspring (1-4 depending on
species)
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Allocebus
Hairy-eared dwarf lemur Thought extinct (critically endangered) Rediscovered in 1989 1 location in N Madagascar
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Cheirogaleus
Dwarf/fat-tailed lemurs
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Most abundant and widespread of lemurs
M. myoxinus – pygmy mouse lemur Smallest primate Adults – 1 oz
Microcebus
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Infants 1/5 oz, adults 2 oz Females > males Fat (base of tail) - seasonally can increase wt 4x Arboreal quadrupeds but may travel on ground Most faunivorous but ↓% of diet
M. murinusMouse lemurs
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Solitary foragers Dispersed polygyny social
system Females may congregate
in nests Males tolerate one
another and may sleep together until mating season
Dominant male suppresses subordinate males via urine pheromones
Highest predation rates of all primates
2-3 offspring up to twice/yr
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Coquerel's dwarf lemur Don’t store fat in tail In addition to usual
scent marking, practice scent discharge – perceptible to humans
M. coquereli
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1 species: fork-marked lemur Gum specialists:
Reinforced fingernails for clinging Upper and lower procumbent
incisors, long canines Long narrow tongue Large cecum
Phaner
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INDRIDAE
3 genera which differ in size and activity patterns Specialized leapers with long limbs especially
hindlimbs Usually single births with long birth intervals 2 of 3 monogamous Herbivorous
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1 species – A. laniger -Woolly lemur
Alarm call sounds like name in Malagasy “a ha hy”
Nocturnal
Avahi
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Territorial pairsMale and female
stay in close contact, resting or grooming ↑40% of night
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Sifaka Long limbs, tail Diurnal
Propithecus
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One-male or multi-male Infanticide reported Verreaux’s sifaka
Females dominant to males
Have distinct alarm calls – aerial vs. terrestrial
Critically endangered P. candidus
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VCL Bipedally hop on
ground
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Indri
Indris or babakotos (“little man of the forest”) Diurnal
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Largest – 13-16# Short stubby tail (vs
sifaka)
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Duet - spacing mechanism
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Territorial pairs – mate face-to-face hanging under branch!
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Geophagic High feed, low social
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DAUBENTONIIDAE
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Daubentoniaaye-aye
Largest nocturnal primate Possibly most widely
distributed but low density Medium size - ~5 ½# Good hearing, smell, and
manual dexterity → large brain
Mate hanging upside down (1hr)!
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Large continuously growing rodent-like incisors 1.0.(1).3/1.0.0.3
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Skeletal 3rd digit Metacarpo-
phalangeal joint is ball and socket vs. condylar
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Nocturnal arboreal quadrupededs Some fear – kill chickens and don’t fear humans Some believe good luck
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Specialize on grub/larvae Also eat fruit, coconuts
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Hunt by audition, gnaw bark w/ incisors, probe w/ 3rd digit
Niche of woodpecker
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Crop raiders for coconuts and sugar cane
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Build leaf nests Solitary foragers but observed in multi-adult groups
BUT Rowe says male overlaps females but females seldom overlap
A creature only a mother could love!!!
Future chicken killer…YIKES!!!
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AFRICA
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GALAGONIDAE
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Galago
Bushbabies – some sound like babies crying
All species are sympatric with congeners
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Small nocturnal VCL’s Solitary foragers Dispersed polygyny Female philopatric Females sleep together in
nests
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TOO CUTE!!!!
In unpredictable areas have 2 litters per year
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High insects and gums Male dominance hierarchy based on age and weight
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Other species Otolemur – Greater
bushbaby – largest Galagoides – Demidoff’s
or Zanzibar bushbaby –endangered – when interacting with adults, if kids hold tail in corkscrew pose, not attacked
Euoticus – Needle-clawed bushbaby – clawlike nails used to cling/climb - gumnivory
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LORIDAE Slow for most part IMI~100 Scapular shield:
Elongated cervical spines (hump)
Butt, bite, drop Singletons Some parking Opposable thumbs
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Perodicticus
Potto (“softly” - soft, slow, silent)
Forests, savanna, plantations
Central and west Africa 1.8-3.5# Short bottle-brush tail Solitary foragers but can be
social – groom, play, fight Hunt by olfaction
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Slow climber with nose to branch
Fig. 1
Fig. 2
Fig. 3
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Low insects ~10%, high FR 65% gums 21%
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Dispersed polygyny ~Monomorphic Infanticide
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Angwantibos Smaller, slender Slow climber High insects w/ some fruit Similar social organization
as pottos
Arctocebus
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Pseudopotto I know nothing!
Pseudopotto
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ASIA
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Loris
Slender loris - "banana on stilts" Arboreal quadruped High insects Solitary foragers – males may sleep together or 1 or
more with female (Nekaris)
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Slow lorises Wide geographic range Tropical rainforest Stockier Slow climbers – can move on top or under branch Powerful grasp – reduced 2nd digit with 1st and 3rd coming
together Fruit, insects (especially slow ones), eggs, cocoa Solitary foragers No parking - precocious young cling
Nyctocebus
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Can sneak up on prey and strike with great speed by perching on its feet and throwing the body forward
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Slow loris
Toxin in glands in elbows Lick - Mixes with saliva –
• Fur
• Parked offspring Nauseates predators Can kill mice
When threatened Hold hands above to lick toxins
in preparation for the fight
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TARSIIDAE
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TarsiusTarsiers
Multiple species on various islands
Small (adults: 4-5 oz) Anatomical intermediates:
Grooming claws, multiple nipples
Postorbital closure (but Beard), foveal retina, nasal anatomy, efficient placenta
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Claws on 2nd and 3rd toes
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T. Syrichta (Philippine Tarsier)
T. Bancanus (Horsfield’s tarsier)
T. Spectrum (spectral tarsier)
T. Pumilus (pygymy tarsier)
T. Dianae (Dian’s tarsier)
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Brain is smooth like carnivores
Huge eyes - >brain or stomach
Nocturnal but foveal retina
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Totally faunivorous –
large insects and small animals
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Large hands and feet - adaptation for clinging and grasping prey
Long legs with many adaptations for VCL >3m
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Solitary, pairs, or multi-male, depending on species
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Relatively large offspring
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Conservation
Philippine tarsiers, spectral tarsiers, Dian’s tarsiers and Horsfield’s tarsiers are all on conservation lists (lower risk)