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  • Title Similarities of the Molar Size in Various Squirrel Monkeys(Saimiri, Ceboidea)

    Author(s) Shigehara, Nobuo; Natori, Masahito

    Citation Kyoto University overseas research reports of new worldmonkeys (1990), 7: 25-31

    Issue Date 1990

    URL http://hdl.handle.net/2433/199641

    Right

    Type Article

    Textversion publisher

    Kyoto University

  • Kyoto University Overseas Research Repo ofNew World Monkeys (1990) 7: 25-31 Kyoto University Primate Research Institute

    25

    Similarities of the Molar Size in Various Squirrel Monkeys

    (Saimiri, Ceboidea)

    INTRODUCTION

    Nobuo SHIGEHARA

    Department of Anatomy, Dokkyo University School of Medicine

    1ihu,Tochigi 321-02, Japan

    & Masahito NA TORI

    Department of Anatomy, Jichi Medical School

    Minamikawachi-machi, Tochigi 320-04, Japan

    Squirrel monkeys are commonly used in the laboratory as experimental animals, but the

    taxonomy of this genus Simiri has been confused (COOPER, 1968). Traditionally, all squiel

    monkeys have been placed in a single species, Saimiri sciureus. CABRERA (1957) stated that the

    many species should be reduced to two at most: Saimiri sciureus which lives in South America

    and Saimiri oerstedi which lives in Central America (NAPIER & NAPIER, 1967; SZALGY & DEL-

    SON, 1979). However, HILL (1960) recognized the following five species, Saimiri sciureus, S.

    oerstedi, S. ustS. madeirae and S. boliviensis. HERSHKOVITZ (1984) recognized many al-

    lopatric species. On the basis of the division of the squielmonkeys, MCLEAN (1964) recog-

    nized nine groups in two major division, Roman type and Gothic type.

    We follow the classification proposed by HERSHKOVITZ, and measured molar tooth size since

    little information is available on the tooth size of the squielmonkeys, except for that reported

    by ORLOSKY (1973) and SWINDLER (1976).

    MATERIALS AND METHODS

    Table 1 shows the materials used in this study. These 173 squirrel monkeys (8 groups) were

    kept in the Field Museum of Natural History in Chicago and the American Museum of Natural

    Table 1. Materials used in this study

    Male Female Simiri sciureus sciureus 21 12 Simiri sciureus cassiquirensis 2 4 Simiri sciureus macrodon 34 29 Saimiri sciureuslbigena 15 2 Saimiri ustus 5 3

    Saimiri oerstedi 4 3 Saimiri boliviensis boliviensis 9 9 Simiri oliviensis peruviensis 14 7 Total 104 69

  • i

    l

    l

    d

    d

    d

    d

    d

    b

    d

    b

    EIEEAA

    i1

    vt

    JSE

    VE

    Eeti

    wmbmbmbwmm

    mmM

    mmM

    z

    a

    EMi

    r

    r

    1

    e

    E

    p

    l

    w

    l

    W

    M

    U

    M

    Tabel 2. Molar size in various squielmonkeys (male) (mm)

    N D

    cd

    pd

    u

    E

    e

    iJ

    S

    3N

    0.10

    0.16

    0.13

    0.17

    0.12

    0.20

    2.69

    4.08

    2.24

    3.70

    1.61

    2.63

    1

    1

    1

    1

    1

    1

    2

    2

    2

    2

    2

    2

    S. bolivzenszs

    No Ave.SD

    0.07

    0.09

    0.07

    0.17

    0.10

    0.16

    2.59

    4.10

    2.31

    3.82

    1.35

    2.47

    7

    7

    7

    7

    7

    7

    S. oerstedi

    No.Ave.SD

    0.06

    0.03

    0.12

    0.10

    0.03

    0.06

    2.57

    3.70

    2.20

    3.47

    1.48

    2.28

    31J1J3

    S. s. macrodon

    No.Ave.SD

    0.11

    0.14

    0.11

    0.15

    0.13

    0.29

    2.77

    4.02

    2.37

    3.65

    1.57

    2.62

    30

    30

    30

    30

    30

    30

    S. s. albzgena

    No. 6Ave. SD

    0.09

    0.12

    0.09

    0.12

    0.10

    0.18

    2.80

    4.09

    2.35

    3.72

    1.64

    2.57

    31d

    31J1J1

    1EAT

    1

    1

    1

    t

    i

    A

    S. s. cass1f?u

    No. 6Ave. SD

    0.04

    0.13

    0.10

    0.01

    0.08

    0.01

    2.57

    4.03

    2.26

    3.55

    1.52

    2.40

    S. peruvzens1s

    No.Ave. SD

    0.11

    0.11

    0.11

    0.16

    0.13

    0.20

    2.61

    4.01

    2.31

    3.73

    1.36

    2.41

    JqJ

    1dnunu

    l

    S. ustus

    No. t Ave. SD

    0.09

    0.14

    0.15

    0.25

    0.05

    0.30

    2.59

    4.02

    2.29

    3.69

    1.54

    2.75

    FJ

    d

    JFJ

    d

    d

    M2

    0.13

    0.13

    0.20

    0.11

    0.15

    0.15

    0.10

    0.16

    0.13

    2.85

    2.81

    2.66

    2.65

    2.64

    2.41

    2.24

    2.06

    1.77

    21

    21

    21

    21

    21

    21

    21

    20

    20

    0.09

    0.10

    0.12

    0.08

    0.11

    0.09

    0.13

    0.12

    0.10

    2.67

    2.78

    2.68

    2.52

    2.54

    2.39

    2.09

    1.98

    1.64

    f

    F

    f

    f

    f

    J

    J

    0.08

    0.03

    0.04

    0.12

    0.03

    0,00

    0.05

    0.08

    0.01

    2 68

    2.57

    2.43

    2.52

    2.42

    2.16

    2.12

    1.97

    1.49

    3q32J32J1

    3

    q

    0.12

    0.14

    0.13

    0.15

    0.13

    0.15

    0.15

    0.16

    0.15

    2.80

    2.88

    2.74

    2.49

    2.68

    2.39

    2.09

    2.06

    1.69

    U

    U

    UAUAUf

    I

    I

    3

    1

    31d3

    h

    0.08

    0.12

    0.11

    0.12

    0.14

    0.14

    0.12

    0.09

    0.11

    2.91

    2.91

    2.77

    2.65

    2.74

    2.38

    2.17

    2.11

    1.72

    31Jq33L

    1

    1

    1

    1

    1

    1

    1

    1

    1

    0.01

    0.08

    0.13

    0.05

    0.08

    0.02

    0.11

    0.02

    0.01

    2.83

    2.62

    2.65

    2.56

    2.50

    2.30

    2.24

    1.83

    1.60

    JB

    h

    q

    q4qL

    4

    0.14

    0.14

    0.15

    0.16

    0.10

    0.13

    0.13

    0.07

    0.08

    2.72

    2.78

    2.68

    2.56

    2.54

    2.36

    2.12

    1.97

    1.63

    d

    3

    1d31dJ

    4

    1

    1

    1

    1

    1

    1

    1

    1

    1

    0.17

    0.09

    0.11

    0.09

    0.10

    0.08

    0.13

    0.13

    0.09

    2.69

    2.77

    2.71

    2.49

    2.62

    2.37

    2.14

    2.00

    1.69

    555555555

    1-3

    M2

    M3

    Upper Jaw

    Ml m-d

    b-1

    m-d

    b-1

    m-d

    b-1

    Lower jaw

    Ml m-d

    m(b-1)

    d(b-1)

    m-d

    m(b-1)

    d(b-1)

    md

    m(b-1)

    d(b-1)

    Table 3. Molar size in various squielmoys(female) (mm)

    S. ustus

    No.Ave. SD

    S. s. sczureus

    No.Ave. SD

    S. boliv1enszs

    No.Ave. SD

    S. oerstedi

    No.Ave. SD

    S. s. macrodon

    No.Ave. SD

    S. s.lb1gen

    No.Ave.SD

    S. s. cass1c1ua

    No.Ave. SD

    S. peruv1ens1s

    No.Ave. SD

    0.13

    0.14

    0.10

    0.42

    0.13

    0.18

    2.68

    4.07

    2.21

    3.52

    1.64

    2.65

    L

    t

    i

    1EA

    t

    EAtA

    1

    A

    0.08

    0.21

    0.09

    0.14

    0.12

    0.18

    2.60

    4.03

    2.23

    3.59

    1.27

    2.24

    06066

    6

    0

    0

    0.03

    0.20

    0.12

    0.09

    0.08

    0.29

    2.59

    3.76

    2.39

    3.46

    1.56

    2.32

    J31dq3

    0.11

    0.12

    0.17

    0.19

    0.09

    0.23

    2.76

    4.01

    2.40

    3.64

    1.56

    2.55

    21

    21

    20

    20

    21

    21

    0.11

    0.08

    0.05

    0.33

    0.04

    0.15

    2.83

    4.11

    2.46

    3.56

    1.66

    2.47

    d3J

    h

    0.03

    0.07

    0.13

    0.05

    0.09

    0.37

    2.64

    3.95

    2.30

    3.62

    1.57

    2.54

    31d2J43

    0.16

    0.19

    0.07

    0.17

    0.12

    0.18

    2.60

    3.97

    2.30

    3.68

    1.44

    2.51

    UUUroufo

    0.02

    0.06

    0.07

    0.27

    0.01

    0.04

    2.72

    4.15

    2.41

    3.58

    1.44

    2.47

    2

    7

    2

    M2

    0.12

    0.13

    0.14

    0.11

    0.13

    0.10

    0.33

    0.16

    0.38

    2.81

    2.75

    2.63

    2.63

    2.61

    2.33

    2.29

    2.07

    1.83

    L

    L

    1

    1

    1

    1

    1

    1

    1

    1

    1

    0.09

    0.12

    0.13

    0.13

    0.13

    0.09

    0.08

    0.16

    0.09

    2.64

    2.71

    2.61

    2.50

    2.44

    2.27

    2.02

    1.95

    1.61

    DODOQUQ000

    U0000

    0.11

    0.06

    0.07

    0.05

    0.11

    0.14

    0.16

    0.04

    0.11

    2.72

    2.52

    2.51

    2.52

    2.41

    2.16

    1.98

    1.93

    1.49

    1dJ

    31J

    0.16

    0.13

    0.10

    0.12

    0.13

    0.13

    0.19

    0.13