Assessment of black and gold howler monkey (Alouatta caraya, Humboldt, 1812) populations in two new study sites in northeastern Argentina
DOI:
https://doi.org/10.62015/np.2023.v29.777Keywords:
Atelidae, population density, study sites, Chaco RegionAbstract
Alouatta caraya has the southernmost distribution of the howler monkeys. While information about most populations remains limited, the forests this species inhabits are being altered continuously. We present data about populations of A. caraya from two new study sites in northeastern Argentina: the “Laguna Oca” Biosphere Reserve (RLO) (26°14'S, 58°10'W), and the “Las Lomas” Private Reserve (RLL) (27°23'S, 58°22'W). We conducted censuses along roads within forest patches in both areas to find groups of A. caraya, counting all visible individuals, and classifying them by sex and age. We found only mixed sex groups in both areas, with a density of 1.12 individuals/ha in RLO and 2.05 individuals/ ha in RLL. At other study sites in Argentina, A. caraya population densities vary from 0.11 to 3.25 individuals/ha, where forest continuity may be important in determining densities. Maintaining long-term study sites of A. caraya across different habitats will allow comparative analyses to explore the underlying mechanisms of behavioral, ecological, and demographic variability.
References
Arditi, S. I. and Placci, L. G. 1990. Hábitat y densidad de Aotus azarae y Alouatta caraya en Riacho Pilagá, Formosa. Bol. Primatol. Latinoam. 2(1): 29–47.
Bicca-Marques, J. C., Rumiz, D. I., Ludwig, G., Rímoli, J., Martins, V., da Cunha, R. G. T., Alves, S. L., Valle, R. R., Miranda, J. M. D., Jerusalinsky, L., Messias, M. R., Cornejo, F. M., Boubli, J. P., Cortes-Ortíz, L., Wallace, R. B., Talebi, M. and de Melo, F. R. 2021. Alouatta caraya (amended version of 2020 assessment). The IUCN Red List of Threatened Species 2021: e.T41545A190414715. Website: https://doi.org/10.2305/IUCN.UK.2021-1.RLTS.T41545A190414715.en. Accessed on 28 Novem- ber 2022.
Brown, A. D. and Zunino, G. E. 1994. Hábitat, densidad y problemas de conservación de los primates de Argentina. Vida Silvestre Neotrop. 3: 30–40.
Bruno, G, Milozzi, C. and Mudry, M. D. 2012. Alouatta caraya: Nuevo sitio de estudio en Argentina. Neotrop. Primates 19(1): 44–45. https://doi.org/10.1896/044.019.0111.
Carnevali, R. 1994. Fitogeografía de la provincia de Corrientes. Instituto Nacional de Tecnología Agropecua- ria (INTA), Corrientes.
Cortés-Ortiz, L., Rylands A. B. and Mittermeier R. A. 2015. The Taxonomy of Howler Monkeys: Integrating Old and New Knowledge from Morphological and Genetic Studies. In: Howler Monkeys. Developments in Primatology: Progress and Prospects, M. Kowalewski, P. Garber, L. Cortés-Ortiz, B. Urbani and D. Youlatos (eds.), pp.55–84. Springer, Berlin.
Crockett, C. M. and Eisenberg, J. F. 1987. Howlers: Variations in Group Size and Demography. In: Primate Societies, B. B. Smuts, D. L. Cheney, R. M. Seyfarth and R. W. Wrangham (eds.), pp.54–68. University of Chicago Press, Chicago.
Di Fiore, A., Link, A. and Campbell, C. J. 2011. The atelines: behavioral and socioecological diversity in a New World radiation. In: Primates in perspective, 2nd Edition, C. A. Campbell, A. Fuentes, K. MacKinnon, S. Bearder, R. Stumpf (eds.), pp.155–188. Oxford University Press, Oxford.
Dvoskin, R, Juárez, C. P. and Fernandez-Duque, E. 2004. Population Density of Black Howlers (Alouatta caraya) in the Gallery Forests of the Argentinean Chaco: A Preliminary Assessment. Folia Primatol. 75: 93–96. https://doi.org/10.1159/000076267
Heidt, A. 2020. Argentinian Field Site Devastated by Fire, New York. Website: https://www.the-scientist.com/news-opinion/argentinian-field-site-devestated-by-fire-68049. Accessed on 3 January 2023.
Holzmann, I., Agostini, I., Areta, J. I., Ferreyra, H., Beldomenico, P. and Di Bitetti, M. S. 2010. Impact of Yellow Fever Outbreaks on Two Howler Monkey Species (Alouatta guariba clamitans and A. caraya) in Misiones, Argentina. Am. J. Primatol. 72: 475–480. https://doi.org/10.1002/ajp.20796.
Jardim, M. M. A., Queirolo, D., Peters, F. B, Mazim, F. D., Favarini, M. O., Tirellia, F. P., Trindade, R. A., Bonatto, S. L., Bicca-Marques, J. C. and Mourthé, I. 2019. Southern extension of the geographic range of black-and-gold howler monkeys (Alouatta caraya). Mammalia 84: 102–106. https://doi.org/10.1515/mammalia-2018-0127.
Juárez, C. P, Dvoskin, R. and Fernández-Duque, E. 2005. Structure and Composition of Wild Black Howler Troops (Alouatta caraya) in Gallery Forests of the Argentinean Chaco. Neotrop. Primates 13(1): 19–22. https://doi.org/10.1896/1413-4705.13.1.19.
Kappeler, P. M. and Watts, D. P. 2012. Long-term field studies of primates. Springer, Berlin.
Kowalewski, M. M., and Zunino, G. E. 1999. Impact of deforestation on a population of Alouatta caraya in northern Argentina. Folia Primatol. 70: 163–166. https://doi.org/10.1159/000021689.
Kowalewski, M. M. and Zunino, G. E. 2004. Birth seasonality in Alouatta caraya in Northern Argentina. Int. J. Primatol. 25: 383–400. https://doi.org/10.1023/B:IJOP.0000019158.45628.4a.
Kowalewski, M. M. 2007. Patterns of affiliation and co-operation in howler monkeys: An alternative model to explain social organization in non-human primates. Doctoral thesis, University of Illinois, Illinois, USA.
Kowalewski, M. M., Salzer, J. S., Deutsch, J. C., Raño, M., Kuhlenschmidt, M. S. and Gillespie, T. R. 2011. Black and gold howler monkeys (Alouatta caraya) as sentinels of ecosystem health: patterns of zoonotic protozoa infection relative to degree of human–primate contact. Am. J. Primatol. 73: 75–83. https://doi.org/10.1002/ajp.20803.
Kowalewski, M. M, Garber, P. A., Cortés-Ortiz, L., Urbani, B. and Youlatos, D. 2015. Why is it important to continue studying the behavioral ecology and conservation management of Howler Monkeys? In: Howler Monkeys. Developments in Primatology: Progress and Prospects, M. M. Kowalewski, P. A. Garber, L. Cortés-Ortiz, B. Urbani and D. Youlatos (eds), pp.3–17, Springer, Berlin.
Kowalewski, M. M., Pavé, R., Fernández, V. A., Raño, M. and Zunino, G. E. 2019. Life- history Traits and Group Dynamic in Black and Gold Howler Monkeys in Flooded Forests of Northern Argentina. In: Primates in Flooded Habitats: Ecology and Conservation, K. Nowak, A. Barnett and I. Matsuda (eds.). pp.263–269. Cambridge University Press, Cambridge.
Manzur, S. M. 2017. Plan de Manejo Reserva de Biosfera Laguna Oca y Herraduras del Río Paraguay. Unidad Central de Administración de Programas (UCAP), Formosa.
Milozzi, C., Bruno, G., Cundom, E. Mudry, M. D. and Navone, G. T. 2012. Intestinal parasites of Alouatta caraya (Primates, Ceboidea): preliminary study in semi-captivity and in the wild in Argentina. Mastozool. Neotrop. 19(2): 271–278.
Oklander, L., Kowalewski, M., Peker, S., Pavé, R., Agos- tini, I., Holzmann, I. and Apellaniz, M. 2019. Alouatta caraya. SAyDS–SAREM (eds.). Categorización 2019 de los mamíferos de Argentina según su riesgo de extinción. Lista Roja de los mamíferos de Argentina. Website: http://cma.sarem.org.ar. Accessed on 28 November 2022.
Rúmiz, D. I. 1990. Alouatta caraya: Population density and demography in northern Argentina. Am. J. Primatol. 21: 279–294. https://doi.org/10.1002/ajp.1350210404.
Smichowski, H., Montiel, R., Romero, V. L, Kowalewski, M. and Contreras, F. I. 2021. Evaluación de incendios en áreas periurbanas de la ciudad de Corrientes (Argentina) durante el año 2020. Papeles de Geografía 67: 151–167. https://doi.org/10.6018/geografia.486441.
Zunino, G. E., González, V., Kowalewski, M. M. and Bravo, S. P. 2001. Alouatta caraya. Relations among habitat, density and social organization. Prim. Rep. 61: 37–46.
Zunino, G. E., Kowalewski, M. M, Oklander, L. I. and González, V. 2007. Habitat fragmentation and population size of the black and gold howler monkey (Alouatta caraya). Am. J. Primatol. 69: 966–975. https://doi.org/10.1002/ajp.20389.
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