Vol. 42 No. 1, January 2001

Koyama, Naoki; Nakamichi, Masayuki; Oda, Ryo; Miyamoto, Naomi; Takahata, Yukio: A ten-year Summary of Reproductive Parameters for Ring-tailed Lemurs at Berenty, Madagascar ..........1
Key Words: Ring-tailed lemurs; Season of birtyhs; Age-specific fecundity; Interbirth intervals; Infant mortality.

Hsu, Minna J.; Agoramoorthy, Govindasamy; Lin, Jin-Fu: Birth Seasonality and Interbirth Intervals in Free-ranging Formosan Macaques, Macaca cyclopis, at Mt. Longevity, Taiwan ..........15
Key Words: Reproduction; Birth rate; Conception; Infant mortality; Macaca cyclopis.

Gotoh, Shunji; Takenaka, Osamu; Watanabe, Kunio; Hamada, Yuzuru; Kawamoto, Yoshi; Watanabe, Tsuyoshi; Suryobroto, Bambang; Sajuthi, Dondin: Hematological Values and Parasite Fauna in Free-ranging Macaca hecki and the M. hecki / M. tonkeana Hybrid Group of Sulawesi Island, Indonesia ..........27
Key Words: Sulawesi macaque; Macaca hecki ; Macaca tonkeana ; red blood cell count (RBC); Plasmodism sp.; trombiculid mite; Anatrichosoma sp.

Kanthaswamy, Sreetharan; Bininda-Emonds, O. R. P.; Warden, C.; Viray, J. L.; Smith, D. G.: Use of SSR Fragment Length Homozygotes for Orangutan Systematics ..........35
Key Words: Pongo pygmaeus ; Microsatellite polymorphism; vWF; Phylogenetic analysis; Conservation.

Itoh, Kosuke: Assessment of Individual Differences in the Preferred Proximity to a Human Feeder by Partitioned Raisin Test, with Two Species of Macaque Monkeys ..........47
Key Words: Personality assessment; Individual differences; Approach-avoidance conflict; Partitioned raisin test; Macaque monkeys.

Cordeiro de Sousa, Maria Bernardete; Xavier, Nívea Saldanha; Alves da Silva, Hélderes Peregrino; Souza de Oliveira, Marcelina; Yamamoto, Maria Emília: Hand Preference Study in Marmosets (Callithrix jacchus ) Using Food Reaching Tests ..........57
Key Words: Hand preference; (Callithrix jacchus); Unimanual tasks; Gender differences; Cognition.

Oka, Teruki; Takenaka, Osamu: Wild Gibbons' Parentage Tested by Non-invasive DNA Sampling and PCR-amplified Polymorphic Microsatellites ..........67
Key Words: Hylobates muelleri ; DNA polymorphism; Non-invasive sampling; Parentage test; Feces; Microsatellite.

Pan, Ruliang; Oxnard, Charles: Metrical Dental Analysis on Golden Monkey (Rhinopithecus roxellana ) ..........75
Key Words: Golden Monkey; Rhinopithecus roxellana ; Metrical dental analysis; Sexual dimorphism; Allometry; Tooth and body size.

Short Communication

Hohmann, Gottfried: Association and Social Interactions Between Strangers and Residents in Bonobos (Pan paniscus ) ..........91
Key Words: Bonobo; Pan paniscus ; Inter-community relations; Transfer.