1. Jokro: The death of a wild infant chimpanzee from respiratory disease

   • Tetsuro Matsuzawa

   Editorial 26 April 2020 Pages: 339 - 346

   

2. Genetic diagnosis of trisomy 21 in chimpanzees (Pan troglodytes)

   • Peter Frandsen
   • Peter Johansen
   • Christina Hvilsom

   News and Perspectives 11 March 2020 Pages: 347 - 350

   

3. Fake twins? Two cases of intensive allomaternal care by female Japanese macaques before and after their own partum

   • Shintaro Ishizuka

   News and Perspectives 16 March 2020 Pages: 351 - 355

   

4. Chasing a ghost: notes on the present distribution and conservation of the sooty mangabey (Cercocebus atys) in Guinea-Bissau, West Africa

   • Maria Joana Ferreira da Silva
   • Christina Paddock
   • Tânia Minhós

   News and Perspectives Open access 21 April 2020 Pages: 357 - 363

   

5. Observations of infant conflict and avoidance in San Martin titi monkeys (Plecturocebus oenanthe)

   • Shannon Hodges

   News and Perspectives 25 March 2020 Pages: 365 - 371

   

6. Review of GPS collar deployments and performance on nonhuman primates

   • Kerry M. Dore
   • Malene F. Hansen
   • Agustín Fuentes

   Original Article 21 January 2020 Pages: 373 - 387

   

7. Correction to: Review of GPS collar deployments and performance on nonhuman primates

   • Kerry M. Dore
   • Malene F. Hansen
   • Agustín Fuentes

   Correction 05 February 2020 Pages: 389 - 390

   

8. Longitudinal changes in the targets of chimpanzee (Pan troglodytes) hunts at Mahale Mountains National Park: how and why did they begin to intensively hunt red colobus (Piliocolobus rufomitratus) in the 1980s?

   • Kazuhiko Hosaka
   • Michio Nakamura
   • Yukio Takahata

   Original Article 24 February 2020 Pages: 391 - 401

   

9. Color discrimination and color preferences in Chimpanzees (Pan troglodytes)

   • Camille H. M. Pene
   • Akiho Muramatsu
   • Tetsuro Matsuzawa

   Original Article 16 January 2020 Pages: 403 - 413

   

10. Spatial position-associated mating strategies employed by male Japanese macaques (Macaca fuscata yakui) in Yakushima

    • Yosuke Otani
    • Akiko Sawada
    • Goro Hanya

    Original Article 22 January 2020 Pages: 415 - 426

    

11. Seasonal variation in energy balance of wild Japanese macaques (Macaca fucata yakui) in a warm-temperate forest: a preliminary assessment in the coastal forest of Yakushima

    • Yosuke Kurihara
    • Kodzue Kinoshita
    • Goro Hanya

    Original Article 11 February 2020 Pages: 427 - 442

    

12. Does rank rule? Rank-related grooming patterns in Nicobar long-tailed macaques Macaca fascicularis umbrosus

    • Partha Sarathi Mishra
    • Arijit Pal
    • Matthew Cooper

    Original Article 27 February 2020 Pages: 443 - 453

    

13. Differential responses of non-human primates to seasonal temperature fluctuations

    • John Chih Mun Sha
    • Heying Du
    • Wu Chen

    Original Article 07 February 2020 Pages: 455 - 464

    

14. Open/close-ended vasectomy technique by single incision on vervet monkeys (Chlorocebus pygerythrus)

    • Ana Navarro-Serra
    • Héctor Sanz-Cabañes

    Original Article 31 January 2020 Pages: 465 - 471

    

15. The diet and feeding behavior of the black-and-white colobus (Colobus guereza) in the Kalinzu Forest, Uganda

    • Ikki Matsuda
    • Hiroshi Ihobe
    • Chie Hashimoto

    Original Article 05 February 2020 Pages: 473 - 484

    

16. Evolution of the bitter taste receptor TAS2R38 in colobines

    • Laurentia Henrieta Permita Sari Purba
    • Kanthi Arum Widayati
    • Hiroo Imai

    Original Article 01 February 2020 Pages: 485 - 494

    

17. Potential role in seed dispersal revealed by experimental trials with captive southern muriquis (Brachyteles arachnoides)

    • E. M. Zanette
    • L. F. Fuzessy
    • E. L. A. Monteiro-Filho

    Original Article 05 February 2020 Pages: 495 - 505

    

18. Geophagy in the yellow-tailed woolly monkey (Lagothrix flavicauda) at La Esperanza, Peru: site characterization and soil composition

    • Vinciane Fack
    • Sam Shanee
    • Hélène Meunier

    Original Article 24 February 2020 Pages: 507 - 518

    

19. Germination of native and exotic seeds dispersed by wild black-and-gold howler monkeys (Alouatta caraya): assessing deinhibition and scarification effects

    • Darío M. Fergnani
    • Martín M. Kowalewski
    • Vanina A. Fernández

    Original Article 16 January 2020 Pages: 519 - 527

    

20. Living in small spaces: Forest fragment characterization and its use by Philippine tarsiers (Tarsius syrichta Linnaeus, 1758) in Mindanao Island, Philippines

    • Simeon Gabriel F. Bejar
    • Mariano Roy M. Duya
    • Perry S. Ong

    Original Article 10 February 2020 Pages: 529 - 542