Vol. 41, No. 2 April 2000

Umapathy, G.; Kumar, Ajith: The Demography of the Lion-tailed Macaque (Macaca silenus) in Rain Forest Fragments in the Anamalai Hills, South India..........119 Key Words: Demography; Fragmentation; Macaca silenus; Rainforests; Western Ghats.

Vitral, Cláudia L.; Yoshida, Clara F. T.; Marchevsky, Renato S.; Pinto, Marcelo A.; Teixeira, Cristiane S.; Baptista, Márcia L.; Gaspar, Ana Maria C.: Studies on Transmission of Hepatitis A Virus to Squirrel Monkeys..........127. Key Words: Hepatitis A virus; Non-human primates; Experimental infection; Squirrel monkeys; Animal model.

Drago, L.; Thierry, B.: Effects of Six-day Maternal Separation on Tonkean Macaque Infants..........137 Key Words: Depression; Loss; Parental; Alloparental; Macaca tonkeana; Sulawesi.

Gibeault, Stephanie; MacDonald, Suzanne E.: Spatial Memory and Foraging Competition in Captive Western Lowland Gorillas (Gorilla gorilla gorilla)..........147 Key Words: Western lowland gorilla; Spatial memory; Competition; Foraging behaviour.

Nakagawa, Naofumi: Seasonal, Sex, and Interspecific Differences in Activity Time Budgets and Diets of Patas Monkeys (Erythrocebus patas) and Tantalus Monkeys (Cercopithecus aethiops tantalus), Living Sympatrically in Northern Cameroon..........161 Key Words: Erythrocebus patas; Cercopithecus aethiops; Activity budget; Diet; Comparison.

Meier, Christoph; Hemelrijk, Charlotte K.; Martin, Robert D.: Paternity Determination, Genetic Characterization, and Social Correlates in a Captive Group of Chimpanzees (Pan troglodytes)..........175. Key Words: Chimpanzees; Genetic fingerprint; Microsatellites; Paternity; Genetic management; Reproductive success; Social Correlates.

Short Communications

White, Brent C.; Dew, Stephanie E.; Prather, James R.; Schneider, Eric; Stearns, MaryJo; Taylor, Steve: Chest-rubbing in Captive Woolly Monkeys (Lagothrix lagotricha)..........185 Key Words: Wooly monkeys; Lagothrix lagotricha; Chest-rubbing; Marking behavior; Reproductive behavior.

Razafindraibe, Hanta; Montagnon, Daniel; Ravoarimanana, Berthine I.; Rumpler, Yves: Interspecific Nucleotide Sequence Differences in the Cytochrome B Gene of Indriidae (Primates, Strepsirhini)..........189. Key Words: Lemurs; Indriidae; Phylogeny; mtDNA.

Pérez, Ana Pérez; Veà, Joaquim J.: Allogrooming Behavior in Cercocebus torquatus: The Case for the Hygienic Functional Hypothesis..........199 Key Words: Allogrooming; Primates; Function; Hygiene; Cercocebus.

Onderdonk, Daphne A.: Infanticide of a Newborn Black-and-white Colobus Monkey (Colobus guereza) in Kibale National Park, Uganda..........209 Key Words: Infanticide; Black-and-white colobus; Reproductive strategy; Aggression; Male immigration; Kibale National Park.

Laska, Matthias; Salazar, Laura Teresa Hernandes; Luna, Ernesto Rodriguez; Hudson, Robyn: Gustatory Responsiveness to Food-associated Acids in the Spider Monkey (Ateles geoffroyi)..........213 Key Words: Gustatory preference threshold; Taste sensitivity; Acidic compounds; Spider monkey; Ateles geoffroyi.

Rolland, N.; Roeder, J. J.: Do Ringtailed Lemurs (Lemur catta) Reconcile in the Hour Post-conflict?: A Pilot Study..........223 Key Words: Reconciliation; Ringtailed lemur; Lemur catta.

Ferrari, Stephen F.; Iwanaga, Simone; Messias, Mariluce R.; Ramos, Eleildon M.; Ramos, Paulo C. S.; da Cruz Neto, Ernesto H.; Coutinho, Paulo E. G.: Titi Monkeys (Callicebus spp., Atelidae: Platyrrhini) in the Brazilian State of Rondônia..........229 Key Words: Callicebus; Species diversity; Population; Zoogeography; Amazonia.

Book Review..........235