Muriquis project - About

Description of data and table

DESCRIPTION OF DATA AND TABLE


Technical Information

Location: RPPN Feliciano Miguel Abdalla

(former Estau00e7u00e3o Biolu00f3gica de Caratinga)

Municu00edpio de Caratinga

Minas Gerais, Brazil

(Coordinates: 19o 50u2019S 41o 50u2019 W)

Study group: Matu00e3o Group

Recording equipment: Marantz PMD-420, Sennheiser K3N+ME80

Digital processing of recordings: Software- Signal/RTS (u00ae Engineering Design)

Hardware- AD interface DT 281 (16 bits, sampling rate=25 kHz)

DSO32C-80 board (arithmetic accelerator)

FDI 901F low and high filter (200 Hz, 10 kHz; 30 kHz, 48db/octave)

Period of Recording: September 19th 1990 to February 3rd 1991

Recorded by: Dr. Francisco Dyonu00edsio Cardoso Mendes

PPG-CdC Ciu00eancias do Comportamento

Depto de Processos Psicolu00f3gicos Bu00e1sicos

Instituto de Psicologia, Universidade de Brasu00edlia


Recordings and Data Collection

All sound files were recorded at the RPPN Feliciano Miguel Abdalla (former Biological Station of Caratinga - 19o 50u2019S 41o 50u2019 W), in the state of Minas Gerais, Brazil, as part of Mendes (1995) PhD research. Detailed information about the study site, its muriqui population and the long-term research project on the species can be found in the book u201cFaces in the Forestu201d, by K.B. Strier.

Audio recordings were made with a Marantz PMD-420 cassete recorder and a Sennheiser K3N+ME80 microphone. Segments of recordings containing sequential calls were digitized and stored using a Signal/RTS system (16 bits, sample rate of 25 KhZ).

The 570 sound files were obtained from September 19th 1990 to February 3rd of 1991; they were recorded during 190 out of the first 460 focal animal samplings and in 76 out of the first 95 ad libitum samplings conducted during this period. Focal animal samplings were 5 minutes blocks of continuous recordings of a single individual (and surrounding sounds). Ad libitum samplings were opportunistic recordings with different durations (from 1 to 14 minutes). Contextual data on the behavior and on the social context of identified callers were announced on tape and/or written on datasheets during both focal animal and ad libitum samplings.

The data set used to build this databank belongs to a larger set with more detailed contextual data obtained from a larger number of focal animal and ad libitum samplings. However, correspondent sound files are only available for the sampling sessions used in this databank: the first 460 focal animal and 95 ad libitum samples.


Publications

Publications that have used part or all data and vocalizations in this databank include:

  • Mendes, F.D.C. (1995). Interações vocais do muriqui. PhD thesis. University of São Paulo
  • Mendes, F.D.C. (1997). Padrões de interações vocais do muriqui (Brachyteles arachnoides hypoxanthus). In: A Primatologia no Brasil, vol. 5. (Ferrari, S.F. & Schneider, H., eds.). Editora Universitária - UFPA. Belém. (pgs 95 - 118)
  • Ades, C. & Mendes, F.D.C. (1997). Uma aproximação às vocalizações do muriqui (Brachyteles arachnoides hypoxanthus). Temas em Psicologia, 3:135- 149.
  • Mendes, F.D.C. & Ades, C. (2004). Vocal sequential exchanges and intragroup spacing in the Northern Muriqui (Brachyteles arachnoides hypoxanthus). Annals of the Brazilian Academy of Sciences, 76(2): 399-404
  • Demolin, D.; Ades, C. & Mendes, F.D.C. (2010). Prosodic features in northern muriquis’ vocalizations. The Evolution of Language: Proceedings of the 8th International Conference (EVOLANG8). Utrecht, Netherlandpp. pgs:91-98.
  • Demolin, D.; Ades, C. & Mendes, F.D.C. (2011) Nonlinear phenomena in muriqui vocalizations. 18th International Congress of Sound and Vibration. Rio de Janeiro, Brazil. pgs: 1-7