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- 2022 - Parent Proximity amongst Alouatta palliata - Poster Presentation
- The interactions between mothers and their offspring are vital for successful child-rearing. Due to the energy-intensive nature of reproducing and child-rearing, a mother Alouatta palliata, or mantled howler monkey, will protect the health and safety of her offspring. However, within three years, the offspring must obtain the skills to survive independently. Female A. palliata experiences a gestational period of approximately 180 days. Every two years, females give birth to one child. An infant A. palliata will nurse for the first 18 months of its life. I hypothesize that mothers will maintain closer proximity to infants than to juveniles. My research will be conducted in May 2022 at the La Selva Research Station in Costa Rica’s north-eastern rainforests. The primary and secondary forests there create an ideal habitat for A. palliata. The adult A. palliata are primates weighing 4 to 5 kg and covered in black fur. Infants will be covered in gold or silver fur until their fur darkens when they reach sexual maturity at three years old. Data will be collected using instantaneous focal sampling in 10-second intervals that will alternate between mothers and offspring. I will distinguish between infant A. palliata, as those clinging to their mothers, and juveniles as those who nurse but transport themselves predominantly independently. A. palliata mothers will be distinguished by the act of nursing their offspring. I will study the methods applied by the mother, A. palliata, in the rearing of her offspring. I will record their proximity to one another and to others, distinguishing between physical contact, within 1 meter, 3 meters, or a distance greater than 3 meters. I will record their behaviors such as feeding, resting, traveling, and grooming. This data will be compared to data collected on other Alouatta species.
- monkeys, Animal behavior, Animal feeding, data analysis, analysis, Primates, Mothers & children, Tropical forests, Autonomy, student projects
- Local Identifiers
- 2022 - Reactions to Human Presence by Primates at La Selva Research Station (Alouatta palliata, Ateles geoffroyi, and Cebus capucinus) - Poster Presentation
- Although closely related, primates and humans do not often interact. This lack of interaction has led to researchers facing limitations in collecting data due to an inability to detect primates before they flee or hide. Habituation is when wild animals become comfortable with human interaction and presence; this can be useful to researchers in allowing them to observe wild animals in closer proximity. Although a useful tool for researchers, habituation can lead to wild animals becoming vulnerable; poachers have easier targets and humans can introduce new diseases. Though the primates at La Selva have not been purposefully habituated, they do have constant contact with humans due to the large amounts of human interaction caused by the researchers who frequent the station. This study will be conducted in May 2022 and will research the effects of human presence on Alouatta palliata, Ateles geoffroyi, and Cebus capucinus. I predict that human presence will have little to no effect on these species. La Selva research hub is a hotspot for researchers and is home to three species of primates: Howler monkeys (Alouatta palliata), Spider monkeys (Ateles geoffroyi), and Capuchin monkeys (Cebus capucinus). I will be doing a census, walking at a speed of 1 km/hr across the 61 km of paved and dirt trails, which are all marked every 50 m. During my census, I will be recording primate and human locations (trail name and nearest marker). Proximity to human-dense areas such as the research station and commonly used trails will be calculated using a La Selva trail map. When primates are located, the census will be paused to collect data on displaying, feeding, locomotion (including whether they are fleeing or approaching), grooming, resting, and vocalizing. A comparison between the abundance of primates found near human-dense areas and more remote areas will be made.
- Primates, monkeys, Animal behavior, Census, Interpersonal relations, student projects, social anthropology, Anthropology
- Local Identifiers